import { Component, signal, NgZone, ChangeDetectorRef, ViewEncapsulation, inject } from '@angular/core';

import { CommonModule } from '@angular/common';

import { FormsModule } from '@angular/forms';

import { RouterModule } from '@angular/router';

import { TimeFormatPipe } from './pipes/time-format.pipe';

import { NumberFormatPipe } from './pipes/number-format.pipe';

import { FileSizePipe } from './pipes/file-size.pipe';

import { DouyinService } from './services/douyin.service';

import { JimengService } from './services/jimeng.service';

import { LlmService } from './services/llm.service';

import { PortraitPipelineService, PortraitPipelineResult } from './services/portrait-pipeline.service';

import { DigitalHumanService, DigitalHumanRequest, DigitalHumanEvent } from './services/digital-human.service';

import { DigitalHumanFormComponent, TimbreOption, PromptPreset } from './components/digital-human-form/digital-human-form.component';

import { PortraitPrepareComponent, PortraitPrepareOutput } from './components/portrait-prepare/portrait-prepare.component';

import { HttpClient, HttpErrorResponse } from '@angular/common/http';

import { timeout, finalize, switchMap } from 'rxjs/operators';

import { of, Observable, from } from 'rxjs';

import { PIPELINES, PipelineDef, getSidebarPipelines } from './pipelines/pipeline-registry';

import { ImageToVideoComponent } from './pages/pipelines/image-to-video/image-to-video.component';

import { ActionTransferComponent } from './pages/pipelines/action-transfer/action-transfer.component';

import { AssetRemixComponent } from './pages/pipelines/asset-remix/asset-remix.component';

import { TopicToVideoComponent } from './pages/pipelines/topic-to-video/topic-to-video.component';
import { ImageGenerationComponent } from './pages/pipelines/image-generation/image-generation.component';

import { DraftsComponent } from './pages/drafts/drafts.component';
import { LibraryComponent } from './pages/library/library.component';
import { PipelineSessionService } from './services/pipeline-session.service';
import { QiniuUploadService } from './services/qiniu-upload.service';
import { BrowserFfmpegService, BrowserAudioExtractionResult } from './services/browser-ffmpeg.service';
import { PipelineRoute } from './pipelines/pipeline-registry';

import { AppSidebarComponent } from './components/app-sidebar/app-sidebar.component';

import { HomeComponent } from './pages/home/home.component';

import { RecentTaskPillComponent, RecentTaskView } from './components/recent-task-pill/recent-task-pill.component';

import { AppAssistantComponent } from './components/app-assistant/app-assistant.component';
import { AssistantSuggestion } from './services/assistant.service';
import { OFFICIAL_VOICE_LIBRARY, VoicePickerComponent, VoiceSelection } from './components/voice-picker/voice-picker.component';



// 类型定义

interface VideoInfo {

  aweme_id: string;

  desc: string;

  cover_url: string;

  cover_candidates?: string[];

  duration: number;

  create_time?: number;

  publishDate?: Date | null;

  author: {

    nickname: string;

    sec_uid: string;

  };

  statistics: {

    play_count: number;

    digg_count: number;

    comment_count: number;

    share_count: number;

  };

  text_extra?: string[];

  // 下载相关

  downloadProgress?: number;

  isDownloading?: boolean;

  downloadUrl?: string;

}



interface Task {

  id: string;

  keyword: string;

  status: 'pending' | 'processing' | 'completed' | 'failed' | 'timeout';

  step: 'search' | 'detail' | 'comments' | 'download' | 'transcribe' | 'generate' | 'complete'

      | 'vg-upload' | 'vg-analyze' | 'vg-script' | 'vg-image' | 'vg-voice' | 'vg-composite';

  progress: number;

  cost: number;

  created_at: Date;

  updated_at: Date;

  result_url?: string;

  error_message?: string;

  original_video_title?: string;

  duration?: string;

  // 任务类型：remix=AI重塑, video-generation=视频生成

  type?: 'remix' | 'video-generation';

  // 视频生成专用持久化数据

  vgData?: {

    videoId: string;

    sourceFileName: string;

    sourceVideoUrl: string;

    step: number;

    transcript: string;

    analysisText: string;

    script: string;

    scriptSegments: { id: string; narration: string; imagePrompt: string; imagePromptCn?: string; }[];

    imageResults: { id: string; prompt: string; imageUrl: string; status: 'pending' | 'generating' | 'done' | 'failed'; }[];

    audioUrls: { segId: string; audioUrl: string; }[];

    voiceMode: 'clone' | 'system';

    voiceSpeakerId: string;

    voiceTimbreId: string;
    voiceName?: string;

    finalVideoUrl: string;

  };

}



interface TaskStats {

  pending: number;

  processing: number;

  completed: number;

  failed: number;

}



interface VoiceProfile {

  id: string;

  name: string;

  creation_mode?: string;

  speaker_id: string;

  timbre_id?: string;

  sample_text: string;

  text_prompt?: string;

  source_audio_text?: string;

  source_audio_name?: string;

  source_audio_format?: string;

  language: number;

  status: number | null;

  status_label: string;

  demo_audio: string;

  available_training_times: number | null;

  image_prompt_name?: string;

  x_api_resource_id?: string;

  model_version?: string;

  icl_speaker_id?: string;

  occupied?: boolean;

  synthesized_audio_url?: string;

  synthesized_work_id?: string;

  last_synthesis_text?: string;

  last_synthesis_ssml?: string;

  last_synthesis_x_api_resource_id?: string;

  last_synthesis_model?: string;

  last_synthesis_format?: string;

  last_synthesis_sample_rate?: number;

  last_synthesis_speech_rate?: number;

  last_synthesis_loudness_rate?: number;

  last_synthesis_emotion?: string;

  last_synthesis_emotion_scale?: number;

  last_synthesis_enable_subtitle?: boolean;

  last_synthesis_silence_duration?: number;

  last_synthesis_enable_language_detector?: boolean;

  last_synthesis_disable_markdown_filter?: boolean;

  last_synthesis_disable_emoji_filter?: boolean;

  last_synthesis_explicit_language?: string;

  latest_audio_url?: string;

  draft_synthesis_text?: string;

  draft_synthesis_ssml?: string;

  draft_synthesis_x_api_resource_id?: string;

  draft_synthesis_model?: string;

  draft_synthesis_format?: string;

  draft_synthesis_sample_rate?: number;

  draft_synthesis_speech_rate?: number;

  draft_synthesis_loudness_rate?: number;

  draft_synthesis_emotion?: string;

  draft_synthesis_emotion_scale?: number;

  draft_synthesis_enable_subtitle?: boolean;

  draft_synthesis_silence_duration?: number;

  draft_synthesis_enable_language_detector?: boolean;

  draft_synthesis_disable_markdown_filter?: boolean;

  draft_synthesis_disable_emoji_filter?: boolean;

  draft_synthesis_explicit_language?: string;

  is_synthesizing?: boolean;

  message?: string;

  request_id?: string;

  created_at: Date;

  updated_at?: Date;

}



interface GeneratedResult {

  id: string;

  type: 'video' | 'image';

  url: string;

  title: string;

  created_at: Date;

  quality: string;

  duration: string;

  cost: number;

  remixId?: string;

  videoId?: string;

  voiceProfileId?: string;

  voiceProfileName?: string;

  audioSourceLabel?: string;

  segments?: { id: string; videoUrl: string; prompt: string; status: string }[];

  /** P0+: 所属生成模式（来自 pipeline-registry，如 'digital_human' / 'image_to_video' 等） */
  pipelineId?: string;

}



interface HistoryRecord {

  id: string;

  original_video_title?: string;

  keyword: string;

  status: 'completed' | 'failed';

  cost: number;

  created_at: Date;

  duration?: string;

  remixId?: string;

  videoId?: string;

  styleName?: string;

  segmentCount?: number;

  successCount?: number;

  resultUrl?: string;

  quality?: string;

  voiceProfileId?: string;

  voiceProfileName?: string;

  audioSourceLabel?: string;

  /** P0+: 所属生成模式 id（与 pipeline-registry.PIPELINES[*].id 对应） */
  pipelineId?: string;

}



interface ManagedVideo {

  id: string;

  title: string;

  filename: string;

  filepath: string;

  size: number;

  duration: number;

  created_at: Date;

  modified_at: Date;

  category: string;

  tags: string[];

  description: string;

  thumbnail?: string;

  source: 'downloaded' | 'generated' | 'uploaded';

  metadata: {

    resolution: string;

    format: string;

    bitrate?: number;

  };

  // Whisper 转录文件路径

  whisper?: {

    transcript?: string;

    srt?: string;

    storyboard?: string;

    beautified?: string;

  };

  // AI重塑相关字段

  isRemixing?: boolean;

  remixProgress?: number;

  remixStyle?: string;

  originalVideoId?: string;

  remixVersions?: RemixVersion[];

}



interface RemixVersion {

  id: string;

  style: string;

  created_at: Date;

  file_path: string;

  thumbnail: string;

  description: string;

  parameters: RemixParameters;

}



interface RemixParameters {

  style: string;

  intensity: number;

  preserve_audio: boolean;

  quality: 'standard' | 'high' | 'ultra';

  effects: string[];

}



interface VideoCategory {

  id: string;

  name: string;

  color: string;

  count: number;

}



interface StoryboardSegment {

  id: string;

  act: string;

  narration: string;

  prompt: string;

  duration: string;

  videoUrl?: string;

  workId?: string;

  status: 'pending' | 'generating' | 'completed' | 'failed';

  error?: string;

}



interface RemixFlowStep {

  step: number;

  label: string;

}



interface MonitorWork {

  id: string;

  desc: string;

  coverUrl: string;

  coverCandidates: string[];

  duration: number;

  createTime?: Date;

  type: 'video' | 'image';

  statistics: {

    play_count: number;

    digg_count: number;

    comment_count: number;

    share_count: number;

  };

  isDownloading?: boolean;

  downloadProgress?: number;

}



interface MonitorAuthor {

  id: string;

  uid: string;

  secUserId: string;

  nickname: string;

  uniqueId: string;

  shortId: string;

  signature: string;

  ipLocation: string;

  verifiedText: string;

  avatarUrl: string;

  avatarCandidates: string[];

  coverUrl: string;

  coverCandidates: string[];

  followerCount: number;

  followingCount: number;

  totalFavorited: number;

  awemeCount: number;

  works: MonitorWork[];

  worksCursor: string;

  hasMoreWorks: boolean;

  loadingWorks: boolean;

}



@Component({

  selector: 'app-root',

  imports: [

    CommonModule,

    FormsModule,

    RouterModule,

    TimeFormatPipe,

    NumberFormatPipe,

    FileSizePipe,

    DigitalHumanFormComponent,

    PortraitPrepareComponent,

    ImageToVideoComponent,

    ActionTransferComponent,

    AssetRemixComponent,

    TopicToVideoComponent,
    ImageGenerationComponent,

    DraftsComponent,

    LibraryComponent,

    AppSidebarComponent,

    HomeComponent,

    RecentTaskPillComponent,

    AppAssistantComponent,

    VoicePickerComponent

  ],

  templateUrl: './app.html',

  styleUrl: './app.css',

  // 关键：app.css 包含全局 dh-* / pl-* / pipeline-* 等设计系统类，
  // 必须设为 None 才能让其作用到 standalone 子组件（图生视频/动作迁移/
  // 素材合成/主题生视频）。否则 Angular 默认 Emulated 会给所有选择器
  // 添加 [_ngcontent-xxx] 属性后缀，导致子组件 DOM 无法匹配，UI 失样。
  encapsulation: ViewEncapsulation.None

})

export class App {

  private pipelineSession = inject(PipelineSessionService);


  protected readonly title = signal('抖音AI视频生成系统');



  // 当前激活的标签页

  currentTab: 'home' | 'search' | 'monitor' | 'tasks' | 'history' | 'results' | 'videos' | 'voice-synthesis' | 'pipelines' | 'digital-human' | 'image-generation' | 'video-generation' | 'image-to-video' | 'action-transfer' | 'asset-remix' | 'topic-to-video' | 'drafts' | 'library' = 'home';

  /** Pipeline 注册中心数据，模板中通过 *ngFor 动态渲染 */
  readonly pipelines = PIPELINES;
  readonly sidebarPipelines = getSidebarPipelines();

  private readonly TAB_STORAGE_KEY = 'tiktok.currentTab';



  // 主题模式（默认浅色）

  themeMode: 'day' | 'night' = 'day';

  private readonly THEME_STORAGE_KEY = 'tiktok.themeMode';

  private readonly TIMBRE_LIST_STORAGE_KEY = 'tiktok.vsClonedTimbreList';

  private readonly MONITOR_AUTHORS_STORAGE_KEY = 'tiktok.monitorAuthors';

  private readonly MONITOR_SELECTED_AUTHOR_STORAGE_KEY = 'tiktok.monitorSelectedAuthorId';



  // 搜索相关属性

  searchKeyword: string = '';

  sortType: string = '0';

  publishTime: string = '0';

  filterDuration: string = '0';

  isSearching: boolean = false;

  searchResults: VideoInfo[] = [];

  filteredSearchResults: VideoInfo[] = [];

  hasMore: boolean = false;

  monitorUniqueIdInput: string = '';

  monitorAuthors: MonitorAuthor[] = [];

  selectedMonitorAuthorId: string = '';

  isAddingMonitorAuthor: boolean = false;

  monitorAddError: string = '';

  private readonly voiceApiToken: string = 'Bearer r:f0333969e312a40e4703e8fe4ed1c600';

  private readonly voiceTtsBaseUrl: string = 'https://server.fmode.cn/api/volcengine/tts';

  private readonly localVoiceTtsBaseUrl: string = '/backend/api/volcengine/tts';

  voiceProfiles: VoiceProfile[] = [];

  isCreatingVoiceProfile: boolean = false;

  voiceDesignError: string = '';

  voiceCreateMode: 'clone' | 'design' | 'synthesize' = 'clone';

  voiceSourceAudioFile: File | null = null;

  voiceSourceAudioName: string = '';

  voiceDesignImageFile: File | null = null;

  voiceDesignImageName: string = '';

  preferredVoiceProfileId: string = '';

  readonly fallbackVoiceSpeakerIdOptions = ['S_1g3vlU702', 'S_OLZKhZWZ1', 'S_PLZKhZWZ1', 'S_QLZKhZWZ1', 'S_ULZKhZWZ1', 'S_TLZKhZWZ1', 'S_SLZKhZWZ1', 'S_RWDjSzXZ1'];

  voiceSpeakerIdOptions: string[] = [...this.fallbackVoiceSpeakerIdOptions];

  voiceForm = {

    displayName: '',

    speakerId: 'S_1g3vlU702',

    textPrompt: '',

    audioText: '',

    sampleText: '',

    synthesisText: '',

    language: 0

  };

  voiceSynthesisForm = {

    profileId: '',

    speakerId: '',

    text: '',

    ssml: '',

    xApiResourceId: '',

    model: '',

    format: 'mp3',

    sampleRate: 24000,

    speechRate: 0,

    loudnessRate: 0,

    emotion: '',

    emotionScale: 4,

    enableSubtitle: false,

    silenceDuration: 0,

    enableLanguageDetector: false,

    disableMarkdownFilter: false,

    disableEmojiFilter: false,

    explicitLanguage: ''

  };

  isDirectVoiceSynthesizing: boolean = false;

  directVoiceSynthesisAudioUrl: string = '';

  directVoiceSynthesisWorkId: string = '';

  directVoiceSynthesisSpeakerId: string = '';



  // 语音合成标签页状态

  vsTtsMode: 'clone' | 'synthesize' = 'clone';

  vsCloneForm = {

    name: '',

    speakerId: 'S_ULZKhZWZ1',

    audioText: '',

    language: 0,

    demoText: '青山依旧在，几度夕阳红。'

  };

  vsCloneAudioFile: File | null = null;

  vsCloneAudioName: string = '';

  vsCloneAudioUrl: string = '';

  vsCloneUploading: boolean = false;

  vsCloneLoading: boolean = false;

  vsCloneError: string = '';

  vsCloneResult: any = null;



  vsSynthForm = {

    timbreId: '',

    text: '白发渔樵江渚上，惯看秋月春风。一壶浊酒喜相逢，古今多少事，都付笑谈中。',

    isStream: false,

    format: 'mp3',

    sampleRate: 24000,

    speechRate: 0,

    loudnessRate: 0,

    /** 当前选中音色来源：'cloned' = 用户复刻；'official' = 官方音色库 */
    voiceSource: 'cloned' as 'cloned' | 'official',

    /** 仅 voiceSource='official' 时使用，对应火山 voice_type */
    voiceType: '',

    /** 当前选中音色的显示名（UI 用） */
    voiceName: ''

  };

  /** 音色选择弹窗开关 */
  voicePickerOpen: boolean = false;

  /** 传给弹窗用于回显高亮的当前选择 */
  get currentVoiceSelection(): VoiceSelection | null {
    const f = this.vsSynthForm;
    if (f.voiceSource === 'official' && f.voiceType) {
      return { source: 'official', name: f.voiceName, id: f.voiceType, voiceType: f.voiceType };
    }
    if (f.voiceSource === 'cloned' && f.timbreId) {
      return { source: 'cloned', name: f.voiceName || f.timbreId, id: f.timbreId, timbreId: f.timbreId };
    }
    return null;
  }

  openVoicePicker(): void {
    this.voicePickerOpen = true;
  }

  closeVoicePicker(): void {
    this.voicePickerOpen = false;
  }

  onVoicePicked(sel: VoiceSelection): void {
    this.vsSynthForm.voiceSource = sel.source;
    this.vsSynthForm.voiceName = sel.name;
    if (sel.source === 'official') {
      this.vsSynthForm.voiceType = sel.voiceType || sel.id;
      this.vsSynthForm.timbreId = '';
    } else {
      this.vsSynthForm.timbreId = sel.timbreId || sel.id;
      this.vsSynthForm.voiceType = '';
    }
    this.vsSynthError = '';
    this.voicePickerOpen = false;
    this.refreshView();
  }

  private getOfficialVoiceName(voiceType: string): string {
    return OFFICIAL_VOICE_LIBRARY.find((item) => item.voiceType === voiceType)?.name || voiceType;
  }

  get vgCurrentVoiceSelection(): VoiceSelection | null {
    if (this.vgVoiceMode === 'clone' && this.vgVoiceTimbreId) {
      const matched = this.vsClonedTimbreList.find((item) => item.objectId === this.vgVoiceTimbreId);
      return {
        source: 'cloned',
        name: this.vgVoiceName || matched?.name || this.vgVoiceTimbreId,
        id: this.vgVoiceTimbreId,
        timbreId: this.vgVoiceTimbreId,
        speakerId: matched?.speakerId,
      };
    }
    if (this.vgVoiceMode === 'system' && this.vgVoiceSpeakerId) {
      return {
        source: 'official',
        name: this.vgVoiceName || this.getOfficialVoiceName(this.vgVoiceSpeakerId),
        id: this.vgVoiceSpeakerId,
        voiceType: this.vgVoiceSpeakerId,
      };
    }
    return null;
  }

  openVgVoicePicker(): void {
    this.vgVoicePickerOpen = true;
  }

  closeVgVoicePicker(): void {
    this.vgVoicePickerOpen = false;
  }

  onVgVoicePicked(sel: VoiceSelection): void {
    this.vgVoiceMode = sel.source === 'official' ? 'system' : 'clone';
    this.vgVoiceName = sel.name;
    if (sel.source === 'official') {
      this.vgVoiceSpeakerId = sel.voiceType || sel.id;
      this.vgVoiceTimbreId = '';
    } else {
      this.vgVoiceTimbreId = sel.timbreId || sel.id;
      this.vgVoiceSpeakerId = '';
    }
    this.vgError = '';
    this.vgVoicePickerOpen = false;
    this.refreshView();
  }

  get dhCurrentVoiceSelection(): VoiceSelection | null {
    if (this.dhTtsVoiceSource === 'official' && this.dhTtsVoiceType) {
      return {
        source: 'official',
        name: this.dhTtsVoiceName || this.getOfficialVoiceName(this.dhTtsVoiceType),
        id: this.dhTtsVoiceType,
        voiceType: this.dhTtsVoiceType,
      };
    }
    if (this.dhTtsVoiceSource === 'cloned' && this.dhTtsTimbreId) {
      const matched = this.vsClonedTimbreList.find((item) => item.objectId === this.dhTtsTimbreId);
      return {
        source: 'cloned',
        name: this.dhTtsVoiceName || matched?.name || this.dhTtsTimbreId,
        id: this.dhTtsTimbreId,
        timbreId: this.dhTtsTimbreId,
        speakerId: matched?.speakerId,
      };
    }
    return null;
  }

  openDhVoicePicker(): void {
    this.dhVoicePickerOpen = true;
  }

  closeDhVoicePicker(): void {
    this.dhVoicePickerOpen = false;
  }

  onDhVoicePicked(sel: VoiceSelection): void {
    this.dhTtsVoiceSource = sel.source;
    this.dhTtsVoiceName = sel.name;
    if (sel.source === 'official') {
      this.dhTtsVoiceType = sel.voiceType || sel.id;
      this.dhTtsTimbreId = '';
    } else {
      this.dhTtsTimbreId = sel.timbreId || sel.id;
      this.dhTtsVoiceType = '';
    }
    this.dhError = '';
    this.dhVoicePickerOpen = false;
    this.refreshView();
  }

  vsSynthLoading: boolean = false;

  vsSynthError: string = '';

  vsSynthAudioUrl: string = '';

  vsSynthWorkId: string = '';

  vsClonedTimbreList: { objectId: string; name: string; speakerId: string }[] = [];



  // 数字人合成独立页面状态

  dhStep: 'form' | 'generating' | 'done' = 'form';

  dhImageFile: File | null = null;

  dhImageName: string = '';

  dhImagePreviewUrl: string = '';

  dhImageAssetUrl: string = '';

  dhAudioSource: 'tts' | 'upload' = 'tts';

  dhTtsTimbreId: string = '';
  dhTtsVoiceSource: 'cloned' | 'official' = 'cloned';
  dhTtsVoiceType: string = '';
  dhTtsVoiceName: string = '';
  dhVoicePickerOpen: boolean = false;

  dhTtsText: string = '';

  dhUploadAudioFile: File | null = null;

  dhUploadAudioName: string = '';

  dhUploadAudioUrl: string = '';

  dhUploadingAudio: boolean = false;

  dhPrompt: string = '';

  // dh tab：形象准备产物（来自 <app-portrait-prepare>），存在时优先于原图

  dhPreparedPortraitUrl: string = '';

  dhPreparedFullBodyUrl: string = '';

  dhPreparedBenchmarkSummary: string = '';

  // 数字人补充提示词预设
  dhPromptPresets: { label: string; value: string }[] = [
    { label: '专业播报', value: '以新闻主播的语气朗读，吐字清晰、节奏稳定、表情自信端正。' },
    { label: '亲切自然', value: '用朋友聊天的语气，亲切自然、面带微笑，语速适中略带轻松感。' },
    { label: '科技感',   value: '冷静理性的科技感口吻，节奏明快、抑扬有度，强调数据与关键词。' },
    { label: '热情带货', value: '充满活力的带货主播风格，语速略快、情绪饱满，重点处加重音强调。' },
    { label: '温柔治愈', value: '温柔轻缓的语气，气息柔和、节奏放慢，适合情感与生活类内容。' },
    { label: '正式商务', value: '商务正式风格，语调克制、用词严谨，仪态端庄，适合企业宣传场景。' },
  ];

  dhFastMode: boolean = false;

  dhResolution: '720p' | '1080p' = '1080p';

  dhError: string = '';

  dhLoading: boolean = false;

  dhStatusText: string = '';

  dhProgress: number = 0;

  dhResultVideoUrl: string = '';

  dhSynthesizing: boolean = false;



  // 数字人合成页：AI 对话助手（用于让用户与 AI 对话调整口播稿风格 / 优化提示词）

  dhChatMessages: Array<{

    role: 'user' | 'assistant';

    content: string;          // 给用户看的文本（assistant 端为 explanation；user 端为输入原文）

    suggestedTts?: string;    // assistant 建议的新口播文本

    suggestedPrompt?: string; // assistant 建议的新补充提示词

    appliedTts?: boolean;

    appliedPrompt?: boolean;

  }> = [];

  dhChatInput: string = '';

  dhChatLoading: boolean = false;

  dhChatError: string = '';



  // 任务管理相关属性

  activeTasks: Task[] = [];

  taskStats: TaskStats = {

    pending: 0,

    processing: 0,

    completed: 0,

    failed: 0

  };



  // 历史记录相关属性

  historyRecords: HistoryRecord[] = [];

  historyFilter = {

    status: ''

  };



  // 生成结果相关属性

  generatedResults: GeneratedResult[] = [];



  // 视频管理相关属性

  managedVideos: ManagedVideo[] = [];

  videoCategories: VideoCategory[] = [];

  selectedVideos: Set<string> = new Set();

  videoFilter = {

    category: '',

    source: '',

    searchTerm: ''

  };

  isSelectionMode: boolean = false;



  // 视频上传

  showUploadModal: boolean = false;

  uploadTitle: string = '';

  uploadDescription: string = '';

  uploadTags: string = '';

  isUploading: boolean = false;

  uploadProgress: number = 0;

  uploadError: string = '';

  uploadFile: File | null = null;

  uploadFileName: string = '';



  // 视频预览模态框

  showPreviewModal: boolean = false;

  previewVideoUrl: string = '';

  previewDownloadUrl: string = '';

  previewVideoTitle: string = '';

  previewVideoInfo: any = null;

  previewSourceVideo: VideoInfo | null = null;



  // 搜索游标（分页）

  searchCursor: number = 0;

  private searchId: string = '';

  private searchBacktrace: string = '';



  // 视频文件基础路径

  private readonly VIDEO_BASE_PATH = '/video';



  // AI重塑模式选择弹窗（视频管理页 → 选择 标准AI重塑 / 数字人生成）

  showRemixModeChooser: boolean = false;

  remixModeChooserVideo: ManagedVideo | null = null;



  // ===== 数字人合成页：参考视频（与视频生成页 vg* 完全隔离的独立状态） =====

  dhRefFile: File | null = null;

  dhRefFileName: string = '';

  dhRefFileSize: number = 0;

  dhRefVideoUrl: string = '';

  dhRefVideoId: string = '';

  dhRefUploading: boolean = false;

  dhRefUploadProgress: number = 0;

  dhRefAnalyzing: boolean = false;

  dhRefAnalysisText: string = '';

  dhRefTranscript: string = '';

  dhRefError: string = '';

  dhRefRewriting: boolean = false;

  dhRefRewriteError: string = '';

  // 当通过「AI 重塑 → 数字人生成」入口进入时，标记需要在分析完成后自动重塑

  dhRefAutoRewrite: boolean = false;


  // AI重塑模态框 — 多步骤流程

  showRemixModal: boolean = false;

  remixTargetVideo: ManagedVideo | null = null;

  remixStep: number = 1; // 1提取文字稿 2AI美化 3分镜脚本 4生成参数 5生成中 6结果

  remixTranscript: string = '';

  remixBeautifiedTranscript: string = '';

  remixStoryboard: StoryboardSegment[] = [];

  remixStyle: string = 'anime';

  remixQuality: '720p' | '1080p' | 'pro' = '1080p';

  remixFrames: number = 121;

  remixAspectRatio: '16:9' | '4:3' | '1:1' | '3:4' | '9:16' | '21:9' = '16:9';

  remixStatusText: string = '';

  isRemixSubmitting: boolean = false;

  remixResults: { total: number; success: number; failed: number } = { total: 0, success: 0, failed: 0 };

  remixStitchStatus: 'idle' | 'stitching' | 'polling' | 'done' | 'failed' = 'idle';

  remixStitchUrl: string = '';

  remixStitchError: string = '';

  remixFinalVideoUrl: string = '';

  remixMode: 'standard' | 'digital-human' = 'standard';

  remixDigitalHumanImageFile: File | null = null;

  remixDigitalHumanImageName: string = '';

  remixDigitalHumanImagePreviewUrl: string = '';

  remixDigitalHumanImageAssetUrl: string = '';

  remixDigitalHumanPrompt: string = '';

  remixDigitalHumanFastMode: boolean = false;

  remixDigitalHumanResolution: '720p' | '1080p' = '1080p';

  remixDigitalHumanError: string = '';

  remixDigitalHumanAudioSource: 'original' | 'tts' = 'tts';

  remixDigitalHumanTtsText: string = '';

  remixDigitalHumanTtsTimbreId: string = '';

  remixDigitalHumanTtsSynthesizing: boolean = false;

  // ===== 数字人形象准备（自拍优化 / 对标重塑）=====
  // raw=直接使用原图；normalize=AI 提取正面全身图；benchmark=对标账号重塑
  remixPortraitPrepareMode: 'raw' | 'normalize' | 'benchmark' = 'raw';

  remixBenchmarkImageFile: File | null = null;
  remixBenchmarkImageName: string = '';
  remixBenchmarkImagePreviewUrl: string = '';

  remixPortraitPipelineRunning: boolean = false;
  remixPortraitPipelineStatus: string = '';
  remixPortraitPipelineProgress: number = 0;
  remixPortraitPipelineError: string = '';

  // pipeline 输出，若存在则数字人生成会优先使用
  remixGeneratedPortraitUrl: string = '';
  remixGeneratedFullBodyUrl: string = '';
  remixGeneratedBenchmarkSummary: string = '';



  // ===== 视频生成工作流 =====

  vgStep: number = 1; // 1上传视频 2视频解析 3脚本生成 4配图生成 5配音 6数字人生成

  readonly vgStepLabels = ['上传视频', '视频解析', '脚本生成', '配图生成', '语音配音', '视频合成'];

  readonly vgStepSubtitles = [

    '选择需要拆解分析的视频源文件',

    'AI 自动转录与内容理解',

    'AI 生成分镜旁白与画面提示词',

    '为每个分镜生成 AI 配图',

    '逐段合成旁白音频',

    '汇总素材并合成最终视频'

  ];

  // 用户手动展开的「已完成」步骤集合（active 步骤始终展开，locked 步骤始终折叠）

  vgUserExpandedSteps: Set<number> = new Set<number>();

  vgSourceFile: File | null = null;

  vgSourceFileName: string = '';

  vgSourceVideoUrl: string = '';

  vgUploading: boolean = false;

  vgUploadProgress: number = 0;

  vgVideoId: string = '';

  // Step 2: 视频解析

  vgAnalyzing: boolean = false;

  vgAnalysisText: string = '';

  vgTranscript: string = '';

  // Step 3: 脚本生成

  vgGeneratingScript: boolean = false;

  vgScript: string = '';

  vgScriptSegments: { id: string; narration: string; imagePrompt: string; imagePromptCn?: string; }[] = [];

  // Step 4: 配图生成

  vgGeneratingImages: boolean = false;

  vgImageResults: { id: string; prompt: string; imageUrl: string; status: 'pending' | 'generating' | 'done' | 'failed'; }[] = [];

  vgImageProgress: number = 0;

  // Step 5: 语音配音

  vgVoiceMode: 'clone' | 'system' = 'system';

  vgVoiceTimbreId: string = '';

  vgVoiceSpeakerId: string = 'zh_female_shuangkuai-am_16k';
  vgVoiceName: string = '';
  vgVoicePickerOpen: boolean = false;

  vgSynthesizing: boolean = false;

  vgAudioUrls: { segId: string; audioUrl: string; }[] = [];

  // Step 6: 视频合成

  vgCompositing: boolean = false;

  vgCompositingProgress: number = 0;

  vgFinalVideoUrl: string = '';

  vgError: string = '';

  vgTaskId: string = ''; // 关联任务管理中的任务ID



  // Whisper 文字稿生成

  isWhisperRunning: boolean = false;

  whisperStatusText: string = '';

  showManualTranscriptInput: boolean = false;



  // 当前 AI 重塑关联的任务

  currentRemixTaskId: string = '';

  currentRemixId: string = '';  // 当前重塑会话ID

  private taskSaveReady: Promise<void> = Promise.resolve();



  // 历史详情模态框

  showHistoryDetailModal: boolean = false;

  historyDetailRecord: HistoryRecord | null = null;

  historyDetailSegments: { id: string; videoUrl: string; prompt: string; status: string; narration?: string }[] = [];

  historyDetailPrimaryVideoUrl: string = '';

  historyDetailLoading: boolean = false;



  // Toast 通知

  toastMessage: string = '';

  toastType: 'success' | 'info' | 'warn' | 'error' = 'info';

  toastVisible: boolean = false;

  private toastTimer: any = null;



  readonly remixStepLabels = ['提取文字稿', 'AI美化', '分镜脚本', '生成参数', '视频生成', '结果汇总'];

  readonly digitalHumanStepLabels = ['模式选择', '生成参数', '视频生成', '结果汇总'];



  // 重塑风格选项

  readonly remixStyleOptions = [

    { id: 'anime', name: '动漫风格', prompt: 'anime style, Japanese animation, vibrant colors, cel shading' },

    { id: 'oil-painting', name: '油画风格', prompt: 'oil painting style, thick brushstrokes, rich textures, classical art' },

    { id: 'watercolor', name: '水彩风格', prompt: 'watercolor painting style, soft colors, fluid brushwork, artistic' },

    { id: 'cyberpunk', name: '赛博朋克', prompt: 'cyberpunk style, neon lights, futuristic city, high tech low life, dark atmosphere' },

    { id: 'cinematic', name: '电影质感', prompt: 'cinematic style, dramatic lighting, shallow depth of field, movie grade color grading' },

    { id: '3d-render', name: '3D渲染', prompt: '3D rendered style, realistic materials, ray tracing, studio lighting' },

    { id: 'ink-wash', name: '水墨风格', prompt: 'Chinese ink wash painting style, minimalist, elegant brushwork, traditional art' },

    { id: 'vintage', name: '复古风格', prompt: 'vintage retro style, film grain, warm tones, nostalgic atmosphere, 1970s aesthetic' }

  ];

  constructor(private douyinService: DouyinService, private jimengService: JimengService, private llmService: LlmService, private portraitPipeline: PortraitPipelineService, private digitalHumanService: DigitalHumanService, private http: HttpClient, private qiniuUpload: QiniuUploadService, private browserFfmpeg: BrowserFfmpegService, private ngZone: NgZone, private cdr: ChangeDetectorRef) {

    void this.pipelineSession.bootstrap();

    this.initializeDefaults();

    this.restoreTheme();

    this.restoreCurrentTab();

    this.restoreClonedTimbreList();

    this.restorePersistedMonitorState();

    this.refreshIncompleteMonitorAuthors();

    this.loadVideoManifest();

    this.loadPersistedData();

  }



  // 初始化默认值（非持久化数据）

  private initializeDefaults(): void {

    this.searchResults = [];

    this.filteredSearchResults = [];

    this.monitorUniqueIdInput = '';

    this.monitorAuthors = [];

    this.selectedMonitorAuthorId = '';

    this.monitorAddError = '';

    this.voiceProfiles = [];

    this.voiceDesignError = '';

    this.voiceCreateMode = 'clone';

    this.voiceSourceAudioFile = null;

    this.voiceSourceAudioName = '';

    this.voiceDesignImageFile = null;

    this.voiceDesignImageName = '';

    this.voiceSpeakerIdOptions = [...this.fallbackVoiceSpeakerIdOptions];

    this.voiceForm = this.buildDefaultVoiceForm();

    this.voiceSynthesisForm = this.buildDefaultVoiceSynthesisForm();

    this.taskStats = { pending: 0, processing: 0, completed: 0, failed: 0 };



    // 视频分类

    this.videoCategories = [

      { id: 'downloaded', name: '已下载', color: '#2196F3', count: 0 },

      { id: 'generated', name: 'AI生成', color: '#4CAF50', count: 0 },

      { id: 'uploaded', name: '已上传', color: '#FF9800', count: 0 }

    ];



    this.managedVideos = [];

  }



  private buildDefaultVoiceForm(): typeof this.voiceForm {

    return {

      displayName: '',

      speakerId: this.voiceSpeakerIdOptions[0] || this.fallbackVoiceSpeakerIdOptions[0] || '',

      textPrompt: '',

      audioText: '',

      sampleText: '',

      synthesisText: '',

      language: 0

    };

  }



  private buildDefaultVoiceSynthesisForm(profileId = ''): typeof this.voiceSynthesisForm {

    return {

      profileId,

      speakerId: '',

      text: '',

      ssml: '',

      xApiResourceId: '',

      model: '',

      format: 'mp3',

      sampleRate: 24000,

      speechRate: 0,

      loudnessRate: 0,

      emotion: '',

      emotionScale: 4,

      enableSubtitle: false,

      silenceDuration: 0,

      enableLanguageDetector: false,

      disableMarkdownFilter: false,

      disableEmojiFilter: false,

      explicitLanguage: ''

    };

  }



  private buildVoiceSynthesisFormFromProfile(profile: VoiceProfile | null | undefined): typeof this.voiceSynthesisForm {

    if (!profile) {

      return this.buildDefaultVoiceSynthesisForm();

    }



    return {

      profileId: profile.id,

      speakerId: String(profile.icl_speaker_id || profile.speaker_id || ''),

      text: String(profile.draft_synthesis_text || profile.last_synthesis_text || ''),

      ssml: String(profile.draft_synthesis_ssml || ''),

      xApiResourceId: String(profile.draft_synthesis_x_api_resource_id || profile.x_api_resource_id || ''),

      model: String(profile.draft_synthesis_model || ''),

      format: this.normalizeVoiceSynthesisFormat(profile.draft_synthesis_format),

      sampleRate: this.normalizeVoiceSynthesisSampleRate(profile.draft_synthesis_sample_rate),

      speechRate: this.clampVoiceSynthesisRate(profile.draft_synthesis_speech_rate, 0),

      loudnessRate: this.clampVoiceSynthesisRate(profile.draft_synthesis_loudness_rate, 0),

      emotion: String(profile.draft_synthesis_emotion || ''),

      emotionScale: this.clampVoiceSynthesisEmotionScale(profile.draft_synthesis_emotion_scale, 4),

      enableSubtitle: !!profile.draft_synthesis_enable_subtitle,

      silenceDuration: this.clampVoiceSynthesisSilenceDuration(profile.draft_synthesis_silence_duration, 0),

      enableLanguageDetector: !!profile.draft_synthesis_enable_language_detector,

      disableMarkdownFilter: !!profile.draft_synthesis_disable_markdown_filter,

      disableEmojiFilter: !!profile.draft_synthesis_disable_emoji_filter,

      explicitLanguage: String(profile.draft_synthesis_explicit_language || '')

    };

  }



  private syncVoiceSynthesisFormSelection(): void {

    const availableProfiles = this.getSynthesisVoiceProfiles();

    const selectedProfile = availableProfiles.find((profile) => profile.id === this.voiceSynthesisForm.profileId) || null;

    if (selectedProfile) {

      this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(selectedProfile);

      return;

    }



    if (String(this.voiceSynthesisForm.speakerId || '').trim()) {

      this.voiceSynthesisForm = {

        ...this.voiceSynthesisForm,

        profileId: ''

      };

      return;

    }



    this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(availableProfiles[0] || null);

  }



  private normalizeVoiceSynthesisFormat(value: any): string {

    const format = String(value || '').trim().toLowerCase();

    return ['mp3', 'ogg_opus', 'pcm'].includes(format) ? format : 'mp3';

  }



  private normalizeVoiceSynthesisSampleRate(value: any): number {

    const sampleRate = Number(value);

    return [8000, 16000, 22050, 24000, 32000, 44100, 48000].includes(sampleRate) ? sampleRate : 24000;

  }



  private clampVoiceSynthesisRate(value: any, fallback = 0): number {

    const numericValue = Number(value);

    if (!Number.isFinite(numericValue)) {

      return fallback;

    }

    return Math.min(100, Math.max(-50, numericValue));

  }



  private clampVoiceSynthesisEmotionScale(value: any, fallback = 4): number {

    const numericValue = Number(value);

    if (!Number.isFinite(numericValue)) {

      return fallback;

    }

    return Math.min(5, Math.max(1, Math.round(numericValue)));

  }



  private clampVoiceSynthesisSilenceDuration(value: any, fallback = 0): number {

    const numericValue = Number(value);

    if (!Number.isFinite(numericValue)) {

      return fallback;

    }

    return Math.min(30000, Math.max(0, Math.round(numericValue)));

  }



  private inferVoiceSourceAudioFormat(file: File): string {

    const mimeType = String(file?.type || '').toLowerCase();

    const fileName = String(file?.name || '').toLowerCase();

    if (mimeType.includes('wav') || fileName.endsWith('.wav')) {

      return 'wav';

    }

    if (mimeType.includes('m4a') || mimeType.includes('mp4') || fileName.endsWith('.m4a')) {

      return 'm4a';

    }

    if (mimeType.includes('aac') || fileName.endsWith('.aac')) {

      return 'aac';

    }

    if (mimeType.includes('flac') || fileName.endsWith('.flac')) {

      return 'flac';

    }

    if (mimeType.includes('opus') || fileName.endsWith('.opus')) {

      return 'opus';

    }

    if (mimeType.includes('ogg') || fileName.endsWith('.ogg')) {

      return 'ogg';

    }

    if (mimeType.includes('pcm') || fileName.endsWith('.pcm')) {

      return 'pcm';

    }

    return 'mp3';

  }



  private readFileAsBase64(file: File): Promise<string> {

    return new Promise((resolve, reject) => {

      const reader = new FileReader();

      reader.onload = () => {

        const result = String(reader.result || '');

        const base64 = result.includes(',') ? result.split(',').pop() || '' : result;

        if (!base64) {

          reject(new Error('音频文件读取失败'));

          return;

        }

        resolve(base64);

      };

      reader.onerror = () => reject(reader.error || new Error('音频文件读取失败'));

      reader.readAsDataURL(file);

    });

  }



  private buildVoiceSynthesisDraft(profile: any): Partial<VoiceProfile> {

    return {

      draft_synthesis_text: String(profile?.last_synthesis_text || ''),

      draft_synthesis_ssml: String(profile?.last_synthesis_ssml || ''),

      draft_synthesis_x_api_resource_id: String(profile?.last_synthesis_x_api_resource_id || profile?.x_api_resource_id || ''),

      draft_synthesis_model: String(profile?.last_synthesis_model || ''),

      draft_synthesis_format: this.normalizeVoiceSynthesisFormat(profile?.last_synthesis_format),

      draft_synthesis_sample_rate: this.normalizeVoiceSynthesisSampleRate(profile?.last_synthesis_sample_rate),

      draft_synthesis_speech_rate: this.clampVoiceSynthesisRate(profile?.last_synthesis_speech_rate, 0),

      draft_synthesis_loudness_rate: this.clampVoiceSynthesisRate(profile?.last_synthesis_loudness_rate, 0),

      draft_synthesis_emotion: String(profile?.last_synthesis_emotion || ''),

      draft_synthesis_emotion_scale: this.clampVoiceSynthesisEmotionScale(profile?.last_synthesis_emotion_scale, 4),

      draft_synthesis_enable_subtitle: !!profile?.last_synthesis_enable_subtitle,

      draft_synthesis_silence_duration: this.clampVoiceSynthesisSilenceDuration(profile?.last_synthesis_silence_duration, 0),

      draft_synthesis_enable_language_detector: !!profile?.last_synthesis_enable_language_detector,

      draft_synthesis_disable_markdown_filter: !!profile?.last_synthesis_disable_markdown_filter,

      draft_synthesis_disable_emoji_filter: !!profile?.last_synthesis_disable_emoji_filter,

      draft_synthesis_explicit_language: String(profile?.last_synthesis_explicit_language || '')

    };

  }



  private restoreCurrentTab(): void {

    try {

      const savedTab = localStorage.getItem(this.TAB_STORAGE_KEY);

      const allowed = ['home','search','monitor','tasks','history','results','videos','voice-synthesis','pipelines','digital-human','image-generation','video-generation','image-to-video','action-transfer','asset-remix','topic-to-video','drafts','library'];

      // 旧 tab → 新页面的迁移映射（M4/M5/M6 重组后）
      // 'history' 完整功能被「我的创作」覆盖；'results' 被「素材库」替代。
      const aliases: Record<string, string> = {
        history: 'drafts',
        results: 'library',
      };

      let target = savedTab;
      if (target && aliases[target]) target = aliases[target];

      if (target && allowed.includes(target)) {

        this.currentTab = target as any;

      }

    } catch {}

  }



  private restoreTheme(): void {

    try {

      const saved = localStorage.getItem(this.THEME_STORAGE_KEY);

      if (saved === 'day' || saved === 'night') {

        this.themeMode = saved;

      }

    } catch {}

  }



  toggleTheme(): void {

    this.themeMode = this.themeMode === 'day' ? 'night' : 'day';

    try {

      localStorage.setItem(this.THEME_STORAGE_KEY, this.themeMode);

    } catch {}

  }



  private restoreClonedTimbreList(): void {

    try {

      const saved = localStorage.getItem(this.TIMBRE_LIST_STORAGE_KEY);

      if (saved) {

        const parsed = JSON.parse(saved);

        if (Array.isArray(parsed)) {

          this.vsClonedTimbreList = parsed.filter(

            (t: any) => t && typeof t.objectId === 'string' && t.objectId

          );

        }

      }

    } catch {}

  }



  private saveClonedTimbreList(): void {

    try {

      localStorage.setItem(this.TIMBRE_LIST_STORAGE_KEY, JSON.stringify(this.vsClonedTimbreList));

    } catch {}

  }



  setCurrentTab(tab: 'home' | 'search' | 'monitor' | 'tasks' | 'history' | 'results' | 'videos' | 'voice-synthesis' | 'pipelines' | 'digital-human' | 'image-generation' | 'video-generation' | 'image-to-video' | 'action-transfer' | 'asset-remix' | 'topic-to-video' | 'drafts' | 'library'): void {

    this.currentTab = tab;

    try {

      localStorage.setItem(this.TAB_STORAGE_KEY, tab);

    } catch {}

  }

  /** 右下浮动 mini-pill：当前正在跑的任务（取 activeTasks 中第一个 processing/pending） */
  get currentRunningTask(): RecentTaskView | null {
    const running = (this.activeTasks || []).find(
      (t) => t && (t.status === 'processing' || t.status === 'pending'),
    );
    if (!running) return null;
    return {
      id: running.id,
      keyword: running.keyword,
      status: running.status,
      step: running.step,
      progress: Math.max(0, Math.min(100, running.progress ?? 0)),
      type: running.type,
    };
  }

  /** assistant 浮窗是否展开（由组件回传）；展开时 pill 让位到面板上方 */
  assistantExpanded = false;
  /** 首屏内联对话页激活（由 app-home 通过 inlineChatChange 输出）：pill / FAB 都隐藏 */
  homeChatActive = false;

  /**
   * pill 隐藏条件：
   * 1. 已经在 tasks 页 —— 重复
   * 2. 浮窗展开 —— 被遮挡
   * 3. 首屏全宽对话页激活 —— 主区已是对话
   */
  get pillHidden(): boolean {
    return this.currentTab === 'tasks' || this.assistantExpanded || this.homeChatActive;
  }

  /** 助手内回复中的「直达 X 模式」按钮被点击 */
  onAssistantSuggestion(s: AssistantSuggestion): void {
    if (!s?.tab) return;
    // 复用首屏跳转通道：含 payload 时同样走 sessionStorage 预填
    this.onHomeNavigate({ tab: s.tab, payload: s.payload });
  }

  /**
   * 「我的创作」页里点「继续编辑」/「再做一版」时调用。
   * 此时 PipelineSessionService.active 已是目标 draft，
   * 切到对应 Pipeline tab 后，组件 ngOnInit 会读取 active 并 fromSnapshot。
   */
  onDraftsNavigate(route: PipelineRoute): void {
    this.setCurrentTab(route);
  }

  /**
   * 「素材库」页点某个卡片 → 打开其所属 draft（到「我的创作」详情）。
   * 跳转后 session 仍保持 active = 该 draft，DraftsComponent 会从 list 中选中。
   */
  async onLibraryNavigate(ev: { draftId: string; pipelineId: PipelineRoute }): Promise<void> {
    await this.pipelineSession.open(ev.draftId);
    this.setCurrentTab('drafts');
  }

  /** 首屏组件输出：可能带 payload（如预填的主题） */
  onHomeNavigate(ev: { tab: string; payload?: any }): void {
    this.setCurrentTab(ev.tab as any);
    // 主题预填：暂存到 sessionStorage，topic-to-video 组件初始化时自取
    if (ev.payload?.topic && ev.tab === 'topic-to-video') {
      try {
        sessionStorage.setItem('t2v.prefillTopic', ev.payload.topic);
      } catch {}
    }
  }



  private restorePersistedMonitorState(): void {

    try {

      const savedAuthors = localStorage.getItem(this.MONITOR_AUTHORS_STORAGE_KEY);

      const savedSelectedAuthorStorageKey = localStorage.getItem(this.MONITOR_SELECTED_AUTHOR_STORAGE_KEY) || '';



      if (savedAuthors) {

        const parsedAuthors = JSON.parse(savedAuthors);

        if (Array.isArray(parsedAuthors)) {

          this.monitorAuthors = parsedAuthors.map((author: any) => this.deserializeMonitorAuthor(author));

        }

      }



      this.selectedMonitorAuthorId = this.monitorAuthors.some(author => author.id === savedSelectedAuthorStorageKey)

        ? savedSelectedAuthorStorageKey

        : '';

    } catch {

      this.monitorAuthors = [];

      this.selectedMonitorAuthorId = '';

    }

  }



  private persistMonitorState(): void {

    try {

      localStorage.setItem(this.MONITOR_AUTHORS_STORAGE_KEY, JSON.stringify(this.monitorAuthors.map(author => this.serializeMonitorAuthor(author))));

      localStorage.setItem(this.MONITOR_SELECTED_AUTHOR_STORAGE_KEY, this.selectedMonitorAuthorId || '');

    } catch {}

  }



  // 从后端加载持久化数据（任务、历史、结果）

  private loadPersistedData(): void {

    // 加载任务

    this.http.get<any[]>('/backend/api/tasks').subscribe({

      next: (tasks) => {

        this.activeTasks = tasks.map(t => ({ ...t, created_at: new Date(t.created_at), updated_at: new Date(t.updated_at) }));

        this.updateTaskStats();

        console.log(`📋 已加载 ${tasks.length} 个任务`);

        // 同步：将 processing 但实际已完成的任务修正

        this.syncTaskStatesFromRemixes();

        this.refreshView();

      },

      error: () => {

        console.warn('⚠️ 无法从后端加载任务，使用空列表');

        this.activeTasks = [];

        this.refreshView();

      }

    });



    // 加载历史

    this.http.get<any[]>('/backend/api/history').subscribe({

      next: (records) => {

        this.historyRecords = records.map(r => ({ ...r, created_at: new Date(r.created_at) }));

        console.log(`📜 已加载 ${records.length} 条历史记录`);

        this.refreshView();

      },

      error: () => {

        console.warn('⚠️ 无法从后端加载历史，使用空列表');

        this.historyRecords = [];

        this.refreshView();

      }

    });



    // 加载结果

    this.http.get<any[]>('/backend/api/results').subscribe({

      next: (results) => {

        this.generatedResults = results.map(r => ({ ...r, created_at: new Date(r.created_at) }));

        console.log(`🎬 已加载 ${results.length} 个生成结果`);

        this.refreshView();

      },

      error: () => {

        console.warn('⚠️ 无法从后端加载结果，使用空列表');

        this.generatedResults = [];

        this.refreshView();

      }

    });

  }



  // 从 remix 数据同步修正任务状态（处理页面刷新后任务状态不一致）

  private syncTaskStatesFromRemixes(): void {

    this.http.get<Record<string, any[]>>('/backend/api/remixes').subscribe({

      next: (allRemixes) => {

        const remixByTaskId = new Map<string, any>();

        for (const remixes of Object.values(allRemixes)) {

          for (const r of remixes) {

            if (r.taskId) remixByTaskId.set(r.taskId, r);

          }

        }



        let changed = false;

        for (const task of this.activeTasks) {

          if (task.status === 'processing') {

            const remix = remixByTaskId.get(task.id);

            if (remix) {

              if (remix.status === 'completed' || remix.status === 'failed') {

                task.status = remix.status;

                task.step = remix.status === 'completed' ? 'complete' : 'generate';

                task.progress = 100;

                const successCount = remix.segments?.filter((s: any) => s.status === 'completed').length || 0;

                const totalCount = remix.segments?.length || 0;

                task.error_message = remix.status === 'failed' ? `${successCount}/${totalCount} 片段成功` : undefined;

                task.result_url = remix.segments?.find((s: any) => s.videoUrl)?.videoUrl;

                task.updated_at = new Date(remix.updated_at || remix.created_at);

                this.updateTask(task);

                changed = true;

              } else if (remix.status === 'generating') {

                const successCount = remix.segments?.filter((s: any) => s.status === 'completed').length || 0;

                const failedCount = remix.segments?.filter((s: any) => s.status === 'failed').length || 0;

                const totalCount = remix.segments?.length || 0;

                const doneCount = successCount + failedCount;

                task.progress = Math.round((doneCount / totalCount) * 80);

                task.updated_at = new Date(remix.updated_at || remix.created_at);

                this.updateTask(task);

                changed = true;

              }

            }

          }

        }



        // 超过1小时仍为 processing 且无匹配 remix 的任务标记为超时

        const oneHourAgo = Date.now() - 60 * 60 * 1000;

        for (const task of this.activeTasks) {

          if (task.status === 'processing' && !remixByTaskId.has(task.id)) {

            if (new Date(task.updated_at).getTime() < oneHourAgo) {

              task.status = 'timeout';

              task.error_message = '任务超时（无匹配生成记录）';

              task.updated_at = new Date();

              this.updateTask(task);

              changed = true;

            }

          }

        }



        if (changed) this.updateTaskStats();

        this.refreshView();

      },

      error: () => {

        this.refreshView();

      }

    });

  }



  // 任务筛选（点击顶部统计卡可缩小到对应状态）

  tasksFilter: '' | 'pending' | 'processing' | 'completed' | 'failed' = '';



  getFilteredTasks(): Task[] {

    if (!this.tasksFilter) return this.activeTasks;

    return this.activeTasks.filter(t => t.status === this.tasksFilter);

  }



  toggleTasksFilter(status: '' | 'pending' | 'processing' | 'completed' | 'failed'): void {

    this.tasksFilter = this.tasksFilter === status ? '' : status;

    this.refreshView();

  }



  // 计算任务统计

  private updateTaskStats(): void {

    this.taskStats = {

      pending: this.activeTasks.filter(t => t.status === 'pending').length,

      processing: this.activeTasks.filter(t => t.status === 'processing').length,

      completed: this.activeTasks.filter(t => t.status === 'completed').length,

      failed: this.activeTasks.filter(t => t.status === 'failed' || t.status === 'timeout').length

    };

  }



  // ==================== 持久化保存方法 ====================



  // 保存任务到后端（返回 Promise，确保 POST 完成后再允许 PUT）

  saveTask(task: Task): void {

    this.taskSaveReady = new Promise<void>((resolve) => {

      this.http.post<any>('/backend/api/tasks', task).subscribe({

        next: (res) => {

          if (res?.task?.id) task.id = res.task.id;

          this.updateTaskStats();

          console.log('💾 任务已保存:', task.id);

          resolve();

        },

        error: (err) => {

          console.warn('⚠️ 任务保存失败:', err);

          resolve(); // 即使失败也 resolve，避免阻塞后续更新

        }

      });

    });

  }



  // 更新任务到后端（等待 POST 完成后再 PUT）

  updateTask(task: Task): void {

    this.taskSaveReady.then(() => {

      this.http.put<any>(`/backend/api/tasks/${task.id}`, task).subscribe({

        next: () => {

          this.updateTaskStats();

        },

        error: (err) => console.warn('⚠️ 任务更新失败:', err)

      });

    });

  }



  // 删除任务（先做本地乐观更新，再持久化；持久化失败也保留本地删除并提示）

  removeTask(taskId: string): void {

    if (!confirm('确定要删除该任务吗？此操作不可恢复。')) return;



    if (!taskId) {

      // ID 为空的脏数据，直接从本地移除

      this.activeTasks = this.activeTasks.filter(t => !!t.id);

      this.updateTaskStats();

      this.refreshView();

      this.showToast('🗑️ 已清除无效任务', 'info');

      return;

    }



    // 乐观删除：立即从本地列表移除，UI 立刻更新

    this.activeTasks = this.activeTasks.filter(t => t.id !== taskId);

    this.canceledTaskIds.add(taskId);

    this.updateTaskStats();

    this.refreshView();



    this.http.delete<any>(`/backend/api/tasks/${taskId}`).subscribe({

      next: () => {

        console.log('🗑️ 任务已删除:', taskId);

        this.showToast('🗑️ 任务已删除', 'success');

      },

      error: (err) => {

        console.warn('⚠️ 任务删除失败:', err);

        this.showToast('⚠️ 后端删除失败，已从列表中移除', 'warn');

      }

    });

  }



  // 保存历史记录到后端

  saveHistoryRecord(record: Partial<HistoryRecord>): void {

    this.http.post<any>('/backend/api/history', record).subscribe({

      next: (res) => {

        if (res?.record) {

          this.historyRecords.unshift({ ...res.record, created_at: new Date(res.record.created_at) });

        }

        console.log('💾 历史记录已保存');

      },

      error: (err) => console.warn('⚠️ 历史保存失败:', err)

    });

  }



  // 删除历史记录

  removeHistoryRecord(recordId: string): void {

    this.http.delete<any>(`/backend/api/history/${recordId}`).subscribe({

      next: () => {

        this.historyRecords = this.historyRecords.filter(r => r.id !== recordId);

        console.log('🗑️ 历史记录已删除:', recordId);

      },

      error: (err) => console.warn('⚠️ 历史删除失败:', err)

    });

  }



  getFilteredHistoryRecords(): HistoryRecord[] {

    return this.historyRecords.filter(record => {

      return !this.historyFilter.status || record.status === this.historyFilter.status;

    });

  }



  // 把标题中嵌入的 #标签 解析出来，主标题与标签分开渲染

  parseHistoryRecordTitle(record: HistoryRecord): { title: string; tags: string[] } {

    const raw = (record.original_video_title || record.keyword || '').trim();

    if (!raw) return { title: '未命名记录', tags: [] };

    const tags: string[] = [];

    const cleaned = raw.replace(/#([^\s#]+)/g, (_, tag) => { tags.push(tag); return ''; }).replace(/\s+/g, ' ').trim();

    return { title: cleaned || raw, tags };

  }



  getHistoryStatusCount(status: string): number {

    if (!status) return this.historyRecords.length;

    return this.historyRecords.filter(r => r.status === status).length;

  }



  // 保存生成结果到后端

  saveResult(result: Partial<GeneratedResult>): void {

    this.http.post<any>('/backend/api/results', result).subscribe({

      next: (res) => {

        if (res?.result) {

          this.generatedResults.unshift({ ...res.result, created_at: new Date(res.result.created_at) });

        }

        console.log('💾 结果已保存');

      },

      error: (err) => console.warn('⚠️ 结果保存失败:', err)

    });

  }



  // 删除生成结果

  removeResult(resultId: string): void {

    this.http.delete<any>(`/backend/api/results/${resultId}`).subscribe({

      next: () => {

        this.generatedResults = this.generatedResults.filter(r => r.id !== resultId);

        console.log('🗑️ 结果已删除:', resultId);

      },

      error: (err) => console.warn('⚠️ 结果删除失败:', err)

    });

  }



  // Toast 通知

  showToast(message: string, type: 'success' | 'info' | 'warn' | 'error' = 'info', duration: number = 4000): void {

    if (this.toastTimer) clearTimeout(this.toastTimer);

    this.toastMessage = message;

    this.toastType = type;

    this.toastVisible = true;

    this.toastTimer = setTimeout(() => {

      this.toastVisible = false;

    }, duration);

  }



  private refreshView(): void {

    this.cdr.detectChanges();

  }



  // 查找并更新任务

  private findRemixTask(): Task | undefined {

    return this.activeTasks.find(t => t.id === this.currentRemixTaskId);

  }



  private updateRemixTaskProgress(step: Task['step'], progress: number, statusText?: string): void {

    const task = this.findRemixTask();

    if (!task) return;

    task.step = step;

    task.progress = Math.round(progress);

    task.updated_at = new Date();

    if (statusText) task.error_message = undefined;

    this.updateTask(task);

  }



  private completeRemixTask(status: 'completed' | 'failed', resultUrl?: string, errorMsg?: string): void {

    const task = this.findRemixTask();

    if (!task) return;

    task.status = status;

    task.step = status === 'completed' ? 'complete' : task.step;

    task.progress = 100;

    task.result_url = resultUrl;

    task.error_message = errorMsg;

    task.updated_at = new Date();

    this.updateTask(task);

    this.updateTaskStats();

  }



  // ==================== Remix 会话持久化 ====================



  // 保存当前重塑会话到后端（每次片段完成时调用）

  private saveRemixSession(status: 'generating' | 'stitching' | 'completed' | 'failed'): void {

    const video = this.remixTargetVideo;

    if (!video || !this.currentRemixId) return;



    const styleName = this.remixMode === 'digital-human'

      ? '数字人生成'

      : (this.remixStyleOptions.find(s => s.id === this.remixStyle)?.name || this.remixStyle);



    const sessionData = {

      remixId: this.currentRemixId,

      videoId: video.id,

      videoTitle: video.title,

      mode: this.remixMode,

      style: this.remixStyle,

      styleName: styleName,

      quality: this.remixMode === 'digital-human' ? this.remixDigitalHumanResolution : this.remixQuality,

      frames: this.remixFrames,

      aspectRatio: this.remixAspectRatio,

      status: status,

      taskId: this.currentRemixTaskId,

      stitchUrl: this.remixStitchUrl || '',

      digitalHumanAudioSource: this.remixMode === 'digital-human' ? this.remixDigitalHumanAudioSource : '',

      digitalHumanVoiceProfileId: '',

      digitalHumanVoiceProfileName: '',

      results: { ...this.remixResults },

      segments: this.remixStoryboard.map(s => ({

        id: s.id,

        act: s.act,

        narration: s.narration,

        prompt: s.prompt,

        duration: s.duration,

        status: s.status,

        videoUrl: s.videoUrl || '',

        workId: s.workId || '',

        error: s.error || ''

      }))

    };



    this.http.post<any>(`/backend/api/remixes/${video.id}`, sessionData).subscribe({

      next: () => console.log(`💾 Remix 会话已保存: ${this.currentRemixId} [${status}]`),

      error: (err) => console.warn('⚠️ Remix 保存失败:', err)

    });

  }



  // 加载某视频的所有重塑记录

  loadVideoRemixes(videoId: string): void {

    this.http.get<any[]>(`/backend/api/remixes/${videoId}`).subscribe({

      next: (remixes) => {

        const video = this.managedVideos.find(v => v.id === videoId);

        if (video && remixes.length > 0) {

          video.remixVersions = remixes.map(r => ({

            id: r.remixId,

            style: r.styleName || r.style,

            created_at: new Date(r.created_at),

            file_path: r.stitchUrl || r.segments?.find((s: any) => s.videoUrl)?.videoUrl || '',

            thumbnail: 'assets/default-remix-thumb.jpg',

            description: `${r.styleName} · ${r.segments?.length || 0}段 · ${r.status === 'completed' ? '已完成' : r.status === 'generating' ? '生成中' : '失败'}`,

            parameters: {

              style: r.style,

              intensity: 0.8,

              preserve_audio: true,

              quality: r.quality === 'pro' ? 'ultra' : 'high',

              effects: [r.style]

            }

          }));

          console.log(`📂 已加载 ${video.title} 的 ${remixes.length} 条重塑记录`);

        }

      },

      error: () => {}

    });

  }



  // 批量加载所有视频的重塑记录

  private loadAllRemixes(): void {

    this.http.get<Record<string, any[]>>('/backend/api/remixes').subscribe({

      next: (allRemixes) => {

        let total = 0;

        for (const [videoId, remixes] of Object.entries(allRemixes)) {

          const video = this.managedVideos.find(v => v.id === videoId);

          if (video && remixes.length > 0) {

            video.remixVersions = remixes.map(r => ({

              id: r.remixId,

              style: r.styleName || r.style,

              created_at: new Date(r.created_at),

              file_path: r.stitchUrl || r.segments?.find((s: any) => s.videoUrl)?.videoUrl || '',

              thumbnail: 'assets/default-remix-thumb.jpg',

              description: `${r.styleName} · ${r.segments?.length || 0}段 · ${r.status === 'completed' ? '已完成' : r.status === 'generating' ? '生成中' : '失败'}`,

              parameters: {

                style: r.style,

                intensity: 0.8,

                preserve_audio: true,

                quality: r.quality === 'pro' ? 'ultra' : 'high',

                effects: [r.style]

              }

            }));

            total += remixes.length;

          }

        }

        if (total > 0) console.log(`📂 已加载 ${total} 条重塑记录`);

        this.refreshView();

      },

      error: () => {

        this.refreshView();

      }

    });

  }



  // 从 src/video/manifest.json 加载视频清单

  private loadVideoManifest(): void {

    this.http.get<any[]>(`/backend/api/manifest`).subscribe({

      next: (manifest) => {

        this.managedVideos = manifest.map((item: any) => ({

          id: item.id,

          title: item.title || item.filename,

          filename: item.filename,

          filepath: (item.filepath && /^https?:\/\//.test(item.filepath)) ? item.filepath : `/backend/api/video/${item.filename}`,

          size: item.size || 0,

          duration: item.duration || 0,

          created_at: item.created_at ? new Date(item.created_at) : new Date(),

          modified_at: item.modified_at ? new Date(item.modified_at) : new Date(),

          category: item.category || 'downloaded',

          tags: item.tags || [],

          description: item.description || '',

          thumbnail: item.thumbnail || '',

          source: item.source || 'downloaded',

          metadata: item.metadata || { resolution: '', format: 'mp4' },

          whisper: item.whisper || undefined

        }));

        this.updateCategoryCounts();

        console.log(`📁 已加载 ${this.managedVideos.length} 个视频`);



        // 加载每个视频的重塑记录

        this.loadAllRemixes();

        this.refreshView();

      },

      error: (err) => {

        console.warn('⚠️ 无法加载视频清单，使用空列表:', err);

        this.managedVideos = [];

        this.refreshView();

      }

    });

  }



  // 将下载的视频添加到管理列表

  private addToManagedVideos(video: VideoInfo, filename: string): void {

    const newVideo: ManagedVideo = {

      id: `VID-${Date.now()}`,

      title: video.desc || filename,

      filename: filename,

      filepath: `${this.VIDEO_BASE_PATH}/${filename}`,

      size: 0,

      duration: video.duration || 0,

      created_at: new Date(),

      modified_at: new Date(),

      category: 'downloaded',

      tags: video.text_extra || [],

      description: video.desc || '',

      thumbnail: video.cover_url || '',

      source: 'downloaded',

      metadata: {

        resolution: '1920x1080',

        format: 'mp4'

      }

    };

    this.managedVideos.unshift(newVideo);

    this.updateCategoryCounts();

    console.log(`✅ 视频已添加到管理列表: ${filename}`);

  }



  addMonitorAuthor(): void {

    const uniqueId = this.monitorUniqueIdInput.trim();

    if (!uniqueId || this.isAddingMonitorAuthor) return;



    const existingAuthor = this.monitorAuthors.find(author => author.uid === uniqueId || author.id === uniqueId || author.uniqueId === uniqueId || author.shortId === uniqueId);

    if (existingAuthor) {

      this.selectedMonitorAuthorId = existingAuthor.id;

      this.persistMonitorState();

      if (existingAuthor.followerCount === 0) {

        this.refreshMonitorAuthorProfile(existingAuthor, false);

      }

      this.showToast(`⚠️ 博主「${existingAuthor.nickname}」已在监测列表中`, 'warn');

      this.refreshView();

      return;

    }



    this.isAddingMonitorAuthor = true;

    this.monitorAddError = '';



    this.buildCompleteMonitorAuthor(uniqueId, (author, usedFallback) => {

      this.monitorAuthors = [author, ...this.monitorAuthors.filter(item => item.id !== author.id && item.uid !== author.uid)];

      this.monitorUniqueIdInput = '';

      this.isAddingMonitorAuthor = false;

      this.persistMonitorState();

      this.showToast(

        usedFallback

          ? `⚠️ 已添加博主「${author.nickname}」，但完整粉丝数据暂未取到`

          : `✅ 已添加博主「${author.nickname}」`,

        usedFallback ? 'warn' : 'success'

      );

      this.fetchMonitorAuthorWorks(author, false);

      this.refreshView();

    }, (message) => {

      this.isAddingMonitorAuthor = false;

      this.monitorAddError = message;

      this.showToast(`❌ ${this.monitorAddError}`, 'error');

      this.refreshView();

    });

  }



  private buildCompleteMonitorAuthor(

    uniqueId: string,

    onSuccess: (author: MonitorAuthor, usedFallback: boolean) => void,

    onError: (message: string) => void

  ): void {

    this.douyinService.getUserProfileByUniqueId(uniqueId).subscribe({

      next: (res: any) => {

        const basicProfile = this.douyinService.extractUserProfileData(res) || {};

        const basicAuthor = this.mapMonitorAuthor(basicProfile, uniqueId);



        if (!basicAuthor.secUserId) {

          onError('未能从抖音号解析出 sec_user_id，暂时无法加载主页作品');

          return;

        }



        this.douyinService.getUserProfileBySecUserId(basicAuthor.secUserId).subscribe({

          next: (detailRes: any) => {

            const detailProfile = this.douyinService.extractUserProfileData(detailRes) || {};

            const author = this.mapMonitorAuthor({

              ...basicProfile,

              ...detailProfile,

              sec_uid: detailProfile?.sec_uid || detailProfile?.sec_user_id || basicProfile?.sec_uid || basicProfile?.sec_user_id || basicAuthor.secUserId,

              sec_user_id: detailProfile?.sec_user_id || detailProfile?.sec_uid || basicProfile?.sec_user_id || basicProfile?.sec_uid || basicAuthor.secUserId,

              unique_id: detailProfile?.unique_id || basicProfile?.unique_id || uniqueId,

              short_id: detailProfile?.short_id || basicProfile?.short_id || '',

              douyin_id: detailProfile?.douyin_id || basicProfile?.douyin_id || ''

            }, uniqueId);

            onSuccess(author, false);

          },

          error: () => {

            onSuccess(basicAuthor, true);

          }

        });

      },

      error: (error: any) => {

        onError(this.getErrorText(error, '获取博主信息失败，请稍后重试'));

      }

    });

  }



  private refreshIncompleteMonitorAuthors(): void {

    this.monitorAuthors

      .filter(author => author.followerCount === 0)

      .forEach(author => this.refreshMonitorAuthorProfile(author, true));

  }



  private refreshMonitorAuthorProfile(author: MonitorAuthor, silent: boolean): void {

    const lookupId = (author.uniqueId || author.shortId || author.uid || '').trim();

    if (!lookupId) {

      return;

    }



    this.buildCompleteMonitorAuthor(lookupId, (nextAuthor, usedFallback) => {

      const mergedAuthor: MonitorAuthor = {

        ...author,

        ...nextAuthor,

        works: author.works,

        worksCursor: author.worksCursor,

        hasMoreWorks: author.hasMoreWorks,

        loadingWorks: author.loadingWorks,

        coverUrl: author.coverUrl || nextAuthor.coverUrl

      };



      this.monitorAuthors = this.monitorAuthors.map(item => (

        item.id === author.id

        || item.uid === author.uid

        || (!!author.secUserId && item.secUserId === author.secUserId)

        || (!!lookupId && (item.uniqueId === lookupId || item.shortId === lookupId || item.uid === lookupId))

          ? mergedAuthor

          : item

      ));



      if (this.selectedMonitorAuthorId === author.id) {

        this.selectedMonitorAuthorId = mergedAuthor.id;

      }



      this.persistMonitorState();

      if (!silent) {

        this.showToast(

          usedFallback

            ? `⚠️ 博主「${mergedAuthor.nickname}」资料已刷新，但完整粉丝数据暂未取到`

            : `✅ 博主「${mergedAuthor.nickname}」资料已刷新`,

          usedFallback ? 'warn' : 'success'

        );

      }

      this.refreshView();

    }, (message) => {

      if (!silent) {

        this.showToast(`❌ ${message}`, 'error');

      }

    });

  }



  openMonitorAuthor(author: MonitorAuthor): void {

    this.selectedMonitorAuthorId = author.id;

    this.persistMonitorState();

    if (author.followerCount === 0) {

      this.refreshMonitorAuthorProfile(author, true);

    }

    if (!author.loadingWorks && author.works.length === 0) {

      this.fetchMonitorAuthorWorks(author, false);

    }

    this.refreshView();

  }



  backToMonitorList(): void {

    this.selectedMonitorAuthorId = '';

    this.persistMonitorState();

    this.refreshView();

  }



  removeMonitorAuthor(author: MonitorAuthor): void {

    if (!confirm(`确定要删除博主「${author.nickname}」吗？`)) {

      return;

    }



    this.monitorAuthors = this.monitorAuthors.filter(item => item.id !== author.id);



    if (this.selectedMonitorAuthorId === author.id) {

      this.selectedMonitorAuthorId = '';

    }



    this.persistMonitorState();

    this.showToast(`🗑️ 已移除博主「${author.nickname}」`, 'success');

    this.refreshView();

  }



  getSelectedMonitorAuthor(): MonitorAuthor | null {

    return this.monitorAuthors.find(author => author.id === this.selectedMonitorAuthorId) || null;

  }



  getTotalMonitorWorksCount(): number {

    return this.monitorAuthors.reduce((total, author) => total + author.works.length, 0);

  }



  reloadMonitorAuthorWorks(author: MonitorAuthor): void {

    this.fetchMonitorAuthorWorks(author, false);

  }



  loadMoreMonitorWorks(author: MonitorAuthor): void {

    if (!author.hasMoreWorks || author.loadingWorks) {

      return;

    }



    this.fetchMonitorAuthorWorks(author, true);

  }



  handleMonitorAuthorAvatarError(author: MonitorAuthor): void {

    const currentIndex = author.avatarCandidates.indexOf(author.avatarUrl);

    const nextIndex = currentIndex >= 0 ? currentIndex + 1 : 0;

    author.avatarUrl = author.avatarCandidates[nextIndex] || this.getMonitorAvatarFallback(author.nickname);

    this.refreshView();

  }



  handleMonitorWorkCoverError(work: MonitorWork): void {

    const currentIndex = work.coverCandidates.indexOf(work.coverUrl);

    const nextIndex = currentIndex >= 0 ? currentIndex + 1 : 0;

    work.coverUrl = work.coverCandidates[nextIndex] || this.getVideoCoverFallback();

    this.refreshView();

  }



  previewMonitorWork(author: MonitorAuthor, work: MonitorWork): void {

    if (work.type !== 'video') {

      window.open(work.coverUrl, '_blank');

      return;

    }



    this.viewVideoDetail(this.buildMonitorVideoInfo(author, work));

  }



  downloadMonitorWork(author: MonitorAuthor, work: MonitorWork): void {

    if (work.type !== 'video' || work.isDownloading) return;



    work.isDownloading = true;

    work.downloadProgress = 0;



    const video = this.buildMonitorVideoInfo(author, work);

    this.douyinService.getVideoDetail(work.id).subscribe({

      next: (res: any) => {

        const detailData = this.douyinService.extractVideoDetailData(res) || {};

        const downloadUrls = this.douyinService.extractVideoDownloadUrls(res);

        const downloadUrl = downloadUrls[0] || '';



        if (!downloadUrl) {

          work.isDownloading = false;

          work.downloadProgress = 0;

          this.showToast('❌ 无法获取下载地址，请稍后重试', 'error');

          this.refreshView();

          return;

        }



        const filename = this.buildVideoFilename(video);

        this.douyinService.startManagedDownload({

          url: downloadUrl,

          urls: downloadUrls,

          filename,

          title: work.desc || work.id,

          description: detailData?.desc || work.desc || '',

          tags: [],

          thumbnail: work.coverUrl || '',

          duration: work.duration || 0,

          resolution: detailData?.video?.ratio || '',

          awemeId: work.id,

          authorName: author.nickname || ''

        }).subscribe({

          next: (taskRes: any) => {

            if (!taskRes?.taskId) {

              work.isDownloading = false;

              work.downloadProgress = 0;

              this.showToast('❌ 下载任务创建失败，请稍后重试', 'error');

              return;

            }



            this.showToast(`📥 正在下载「${work.desc || work.id}」到视频库`, 'info');

            this.pollMonitorWorkDownload(work, taskRes.taskId);

          },

          error: (error: any) => {

            work.isDownloading = false;

            work.downloadProgress = 0;

            this.showToast(`❌ 创建下载任务失败：${error?.error?.error || error?.message || '请稍后重试'}`, 'error');

            this.refreshView();

          }

        });

      },

      error: (error: any) => {

        work.isDownloading = false;

        work.downloadProgress = 0;

        this.showToast(`❌ 获取视频信息失败：${error?.error?.error || error?.message || '请稍后重试'}`, 'error');

        this.refreshView();

      }

    });

  }



  getMonitorHeroBackground(author: MonitorAuthor): string {

    return author.coverUrl

      ? `linear-gradient(90deg, rgba(11, 15, 25, 0.92), rgba(11, 15, 25, 0.55)), url(${author.coverUrl})`

      : 'linear-gradient(135deg, #161a27, #232a3d)';

  }



  // 搜索视频

  searchVideos(): void {

    if (!this.searchKeyword.trim()) return;



    this.isSearching = true;

    this.searchCursor = 0;

    this.searchId = '';

    this.searchBacktrace = '';

    this.searchResults = [];

    this.filteredSearchResults = [];



    this.douyinService.searchVideos(this.searchKeyword, '0', 0, '0', '0', '1')

      .subscribe({

        next: (res: any) => {

          this.isSearching = false;

          const parsed = this.parseSearchResponse(res);

          this.searchResults = parsed.items

            .map((item: any) => this.mapVideoItem(item))

            .filter((item: VideoInfo) => !!item.aweme_id || !!item.desc || !!item.cover_url);

          this.applySearchFilters();

          this.hasMore = parsed.hasMore;

          this.searchCursor = parsed.cursor;

          this.searchId = parsed.searchId;

          this.searchBacktrace = parsed.backtrace;

          console.log('🔍 搜索结果解析:', { raw: res, parsed, mapped: this.searchResults });

          this.refreshView();



          if (this.filteredSearchResults.length === 0) {

            alert('未找到相关视频，请尝试其他关键词');

          }

        },

        error: (error: any) => {

          console.error('搜索失败:', error);

          this.isSearching = false;

          let errorMessage = '搜索失败，请稍后重试';



          if (error.status === 401) {

            errorMessage = '认证失败，Token可能已失效';

          } else if (error.status === 429) {

            errorMessage = '请求过于频繁，请稍后重试';

          } else if (error.status === 0) {

            errorMessage = '网络连接失败，请检查网络设置';

          }



          alert(errorMessage);

        }

      });

  }



  // 映射API返回的视频数据

  private mapVideoItem(item: any): VideoInfo {

    const info = item?.aweme_info || item?.data?.aweme_info || item?.data?.challenge_info || item;

    const coverCandidates = this.buildCoverCandidates(info);

    const coverUrl = coverCandidates[0] || this.getVideoCoverFallback();

    const duration = Math.floor((info.video?.duration || info.duration || 0) / ((info.video?.duration || info.duration || 0) > 1000 ? 1000 : 1));

    const tags = Array.isArray(info.text_extra)

      ? info.text_extra

          .map((tag: any) => tag?.hashtag_name || tag?.cha_name || tag?.tag_name || tag?.hash_tag_name || tag)

          .filter((tag: any) => typeof tag === 'string' && tag.trim())

      : Array.isArray(info.cha_list)

        ? info.cha_list

            .map((tag: any) => tag?.cha_name || tag?.hashtag_name || tag?.tag_name || tag)

            .filter((tag: any) => typeof tag === 'string' && tag.trim())

      : (info.desc ? [info.desc] : []);



    return {

      aweme_id: info.aweme_id || info.group_id || info.cid || item.data_id || '',

      desc: info.desc || info.cha_name || info.title || info.content || '',

      cover_url: coverUrl,

      cover_candidates: coverCandidates,

      duration: duration,

      create_time: info.create_time || item.create_time || 0,

      publishDate: (info.create_time || item.create_time) ? new Date((info.create_time || item.create_time) * 1000) : null,

      author: {

        nickname: info.author?.nickname || info.nickname || '未知作者',

        sec_uid: info.author?.sec_uid || info.author?.uid || ''

      },

      statistics: {

        play_count: info.statistics?.play_count || info.view_count || 0,

        digg_count: info.statistics?.digg_count || info.user_count || 0,

        comment_count: info.statistics?.comment_count || 0,

        share_count: info.statistics?.share_count || 0

      },

      text_extra: tags

    };

  }



  private buildCoverCandidates(info: any): string[] {

    const candidates = [

      info.video?.origin_cover?.url_list?.[0],

      info.video?.cover?.url_list?.[0],

      info.video?.dynamic_cover?.url_list?.[0],

      info.video?.animated_cover?.url_list?.[0],

      info.author?.avatar_larger?.url_list?.[0],

      info.author?.avatar_medium?.url_list?.[0],

      info.author?.avatar_thumb?.url_list?.[0],

      info.hashtag_profile,

      info.cover_url

    ];



    return candidates.filter((url, index, list) => typeof url === 'string' && url.trim() && list.indexOf(url) === index);

  }



  handleVideoCoverError(video: VideoInfo): void {

    const candidates = video.cover_candidates || [];

    const currentIndex = candidates.indexOf(video.cover_url);

    const nextIndex = currentIndex >= 0 ? currentIndex + 1 : 0;

    const nextCover = candidates[nextIndex];



    if (nextCover) {

      video.cover_url = nextCover;

    } else {

      video.cover_url = this.getVideoCoverFallback();

    }



    this.refreshView();

  }



  private getVideoCoverFallback(): string {

    return 'data:image/svg+xml;charset=UTF-8,' + encodeURIComponent('<svg xmlns="http://www.w3.org/2000/svg" width="480" height="270" viewBox="0 0 480 270"><rect width="480" height="270" fill="#f3f4f6"/><text x="50%" y="50%" dominant-baseline="middle" text-anchor="middle" fill="#9ca3af" font-size="20">封面加载失败</text></svg>');

  }



  private parseSearchResponse(res: any): { items: any[]; hasMore: boolean; cursor: number; searchId: string; backtrace: string } {

    const normalizedResponse = this.parseJsonPayload(res);

    const normalizedData = this.parseJsonPayload(normalizedResponse?.data);

    const nestedData = this.parseJsonPayload(normalizedData?.data);

    const businessConfig = this.parseJsonPayload(normalizedData?.business_config) || {};

    const nextPage = this.parseJsonPayload(businessConfig?.next_page) || {};



    const directData = Array.isArray(normalizedData) ? normalizedData : [];

    const nestedArray = Array.isArray(nestedData) ? nestedData : [];

    const businessData = Array.isArray(normalizedData?.business_data) ? normalizedData.business_data : [];

    const items = directData.length > 0 ? directData : (nestedArray.length > 0 ? nestedArray : businessData);



    const hasMore =

      normalizedResponse?.has_more === 1 ||

      normalizedData?.has_more === 1 ||

      businessConfig?.has_more === 1 ||

      false;



    const cursor =

      normalizedResponse?.cursor ??

      normalizedData?.cursor ??

      nextPage?.cursor ??

      items.length;



    const searchId =

      normalizedResponse?.search_id ||

      normalizedData?.search_id ||

      nextPage?.search_id ||

      nextPage?.search_request_id ||

      '';



    const backtrace =

      normalizedResponse?.backtrace ||

      normalizedData?.backtrace ||

      nextPage?.backtrace ||

      '';



    return {

      items,

      hasMore,

      cursor: typeof cursor === 'number' ? cursor : Number(cursor || items.length),

      searchId,

      backtrace

    };

  }



  private parseJsonPayload(value: any): any {

    let current = value;



    while (typeof current === 'string') {

      const trimmed = current.trim();

      if (!trimmed || (!trimmed.startsWith('{') && !trimmed.startsWith('['))) {

        break;

      }



      try {

        current = JSON.parse(trimmed);

      } catch {

        break;

      }

    }



    return current;

  }



  private normalizeMonitorLabelText(value: any): string {

    const normalized = this.parseJsonPayload(value);



    if (typeof normalized === 'string') {

      const trimmed = normalized.trim();

      if (!trimmed) {

        return '';

      }



      const labelTextMatch = trimmed.match(/"label_text"\s*:\s*"([^"]+)"/);

      if (labelTextMatch?.[1]) {

        return labelTextMatch[1].trim();

      }



      return trimmed;

    }



    if (Array.isArray(normalized)) {

      return normalized

        .map(item => this.normalizeMonitorLabelText(item))

        .find(item => !!item) || '';

    }



    if (normalized && typeof normalized === 'object') {

      const candidateKeys = ['label_text', 'text', 'name', 'title', 'desc'];

      for (const key of candidateKeys) {

        const text = this.normalizeMonitorLabelText(normalized[key]);

        if (text) {

          return text;

        }

      }

    }



    return '';

  }



  getMonitorIpLocationText(author: MonitorAuthor | null | undefined): string {

    const location = this.normalizeMonitorIpLocation(author?.ipLocation);

    return location ? `IP 属地：${location}` : 'IP 属地未抓取';

  }



  private normalizeMonitorIpLocation(value: any): string {

    const normalized = this.normalizeMonitorLabelText(value);

    if (!normalized) {

      return '';

    }



    return normalized.replace(/^IP\s*属地\s*[:：]?\s*/i, '').trim();

  }



  private pickMonitorCountValue(values: any[]): number {

    for (const value of values) {

      const parsed = this.parseMonitorCountValue(value);

      if (parsed !== null) {

        return parsed;

      }

    }



    return 0;

  }



  private parseMonitorCountValue(value: any): number | null {

    const normalized = this.parseJsonPayload(value);



    if (typeof normalized === 'number') {

      return Number.isFinite(normalized) ? normalized : null;

    }



    if (typeof normalized === 'string') {

      const trimmed = normalized.trim();

      if (!trimmed) {

        return null;

      }



      const compact = trimmed.replace(/,/g, '').replace(/\s+/g, '');

      const unitMatch = compact.match(/^([\d.]+)(亿|万|[kKmMwW])$/);

      if (unitMatch) {

        const base = Number(unitMatch[1]);

        if (!Number.isFinite(base)) {

          return null;

        }



        const unit = unitMatch[2].toLowerCase();

        const multiplier = unit === '亿'

          ? 100000000

          : (unit === '万' || unit === 'w')

            ? 10000

            : unit === 'm'

              ? 1000000

              : 1000;

        return Math.round(base * multiplier);

      }



      const directNumber = Number(compact);

      return Number.isFinite(directNumber) ? directNumber : null;

    }



    if (normalized && typeof normalized === 'object') {

      const candidateKeys = ['count', 'value', 'total', 'num'];

      for (const key of candidateKeys) {

        const parsed = this.parseMonitorCountValue(normalized[key]);

        if (parsed !== null) {

          return parsed;

        }

      }

    }



    return null;

  }



  onSearchFilterChange(): void {

    this.applySearchFilters();

    this.refreshView();

  }



  private applySearchFilters(): void {

    let items = [...this.searchResults];



    if (this.publishTime !== '0') {

      const nowSeconds = Math.floor(Date.now() / 1000);

      const limitSeconds = Number(this.publishTime) * 24 * 60 * 60;

      items = items.filter((video) => !video.create_time || (nowSeconds - video.create_time) <= limitSeconds);

    }



    if (this.filterDuration !== '0') {

      const [minMinutes, maxMinutes] = this.filterDuration.split('-').map(value => Number(value || 0));

      items = items.filter((video) => {

        const durationMinutes = (video.duration || 0) / 60;

        return durationMinutes >= minMinutes && durationMinutes <= maxMinutes;

      });

    }



    if (this.sortType === '1') {

      items.sort((a, b) => (b.statistics?.digg_count || 0) - (a.statistics?.digg_count || 0));

    } else if (this.sortType === '2') {

      items.sort((a, b) => (b.create_time || 0) - (a.create_time || 0));

    }



    this.filteredSearchResults = items;

  }



  private fetchMonitorAuthorWorks(author: MonitorAuthor, append: boolean): void {

    if (!author.secUserId || author.loadingWorks) {

      return;

    }



    author.loadingWorks = true;

    const cursor = append ? author.worksCursor : '0';

    this.refreshView();



    this.douyinService.getUserPostVideos(author.secUserId, cursor).subscribe({

      next: (res: any) => {

        const parsed = this.douyinService.extractUserPostVideos(res);

        const mappedWorks = parsed.items

          .map((item: any) => this.mapMonitorWork(item))

          .filter((item: MonitorWork) => !!item.id || !!item.desc || !!item.coverUrl);



        author.works = append

          ? [...author.works, ...mappedWorks.filter(item => !author.works.some(existing => existing.id === item.id))]

          : mappedWorks;

        author.worksCursor = parsed.cursor;

        author.hasMoreWorks = parsed.hasMore;

        author.loadingWorks = false;

        author.coverUrl = author.coverUrl || author.works[0]?.coverUrl || author.avatarUrl;

        this.persistMonitorState();

        this.refreshView();

      },

      error: (error: any) => {

        author.loadingWorks = false;

        this.showToast(`❌ ${this.getErrorText(error, '加载博主作品失败，请稍后重试')}`, 'error');

        this.refreshView();

      }

    });

  }



  private mapMonitorAuthor(profile: any, uid: string): MonitorAuthor {

    const avatarCandidates = this.pickUniqueStringValues([

      profile?.avatar_larger?.url_list,

      profile?.avatar_medium?.url_list,

      profile?.avatar_thumb?.url_list,

      profile?.avatar_168x168?.url_list,

      profile?.avatar_url

    ]);

    const coverCandidates = this.pickUniqueStringValues([

      profile?.cover_url,

      profile?.cover_urls,

      profile?.cover_thumb?.url_list,

      profile?.video_cover?.url_list,

      avatarCandidates

    ]);

    const nickname = profile?.nickname || profile?.display_name || `UID ${uid}`;

    const verifiedText = [

      profile?.custom_verify,

      profile?.enterprise_verify_reason,

      profile?.account_cert_info,

      profile?.verification_info

    ].map((item: any) => this.normalizeMonitorLabelText(item)).find((item: string) => !!item) || '';

    const ipLocation = this.normalizeMonitorIpLocation(

      [

        profile?.ip_location,

        profile?.ip_label,

        profile?.ipLocation,

        profile?.ip_info?.location,

        profile?.ip_info?.ip_location,

        profile?.ip_region,

        profile?.location

      ].find((item: any) => !!this.normalizeMonitorLabelText(item)) || ''

    );

    const followerCount = this.pickMonitorCountValue([

      profile?.follower_count,

      profile?.followerCount,

      profile?.fans_count,

      profile?.fansCount,

      profile?.public_fans_count,

      profile?.statistics?.follower_count,

      profile?.statistics?.fans_count,

      profile?.author_stats?.follower_count,

      profile?.author_stats?.fans_count,

      profile?.user_stats?.follower_count,

      profile?.user_stats?.fans_count,

      profile?.user_statistics?.follower_count,

      profile?.user_statistics?.fans_count,

      profile?.stats?.follower_count,

      profile?.stats?.fans_count

    ]);

    const followingCount = this.pickMonitorCountValue([

      profile?.following_count,

      profile?.followingCount,

      profile?.statistics?.following_count,

      profile?.author_stats?.following_count,

      profile?.user_stats?.following_count,

      profile?.user_statistics?.following_count,

      profile?.stats?.following_count

    ]);

    const totalFavorited = this.pickMonitorCountValue([

      profile?.total_favorited,

      profile?.favoriting_count,

      profile?.totalFavorited,

      profile?.liked_count,

      profile?.statistics?.total_favorited,

      profile?.statistics?.favoriting_count,

      profile?.author_stats?.total_favorited,

      profile?.user_stats?.total_favorited,

      profile?.user_statistics?.total_favorited,

      profile?.stats?.total_favorited

    ]);

    const awemeCount = this.pickMonitorCountValue([

      profile?.aweme_count,

      profile?.video_count,

      profile?.awemeCount,

      profile?.statistics?.aweme_count,

      profile?.statistics?.video_count,

      profile?.author_stats?.aweme_count,

      profile?.user_stats?.aweme_count,

      profile?.user_statistics?.aweme_count,

      profile?.stats?.aweme_count

    ]);



    return {

      id: String(profile?.uid || uid),

      uid: String(uid),

      secUserId: String(profile?.sec_uid || profile?.sec_user_id || profile?.secUid || ''),

      nickname,

      uniqueId: String(profile?.unique_id || profile?.short_id || profile?.douyin_id || ''),

      shortId: String(profile?.short_id || profile?.douyin_id || ''),

      signature: profile?.signature || profile?.bio_description || '',

      ipLocation,

      verifiedText,

      avatarUrl: avatarCandidates[0] || this.getMonitorAvatarFallback(nickname),

      avatarCandidates,

      coverUrl: coverCandidates[0] || '',

      coverCandidates,

      followerCount,

      followingCount,

      totalFavorited,

      awemeCount,

      works: [],

      worksCursor: '0',

      hasMoreWorks: false,

      loadingWorks: false

    };

  }



  private mapMonitorWork(item: any): MonitorWork {

    const coverCandidates = this.pickUniqueStringValues([

      item?.video?.origin_cover?.url_list,

      item?.video?.cover?.url_list,

      item?.video?.dynamic_cover?.url_list,

      item?.cover?.url_list,

      item?.images?.map((image: any) => image?.url_list?.[0] || image?.download_url_list?.[0]),

      item?.image_infos?.map((image: any) => image?.label_large?.url_list?.[0] || image?.label_thumb?.url_list?.[0]),

      item?.cover_url

    ]);

    const rawDuration = Number(item?.video?.duration || item?.duration || 0);

    const createTimestamp = Number(item?.create_time || 0);

    const statistics = item?.statistics || item?.statis || {};

    const hasImageGroup = (Array.isArray(item?.images) && item.images.length > 0) || (Array.isArray(item?.image_infos) && item.image_infos.length > 0);



    return {

      id: String(item?.aweme_id || item?.group_id || item?.item_id || `${Date.now()}-${Math.random()}`),

      desc: item?.desc || item?.title || '未命名作品',

      coverUrl: coverCandidates[0] || this.getVideoCoverFallback(),

      coverCandidates,

      duration: Math.floor(rawDuration / (rawDuration > 1000 ? 1000 : 1)),

      createTime: createTimestamp ? new Date(createTimestamp > 1000000000000 ? createTimestamp : createTimestamp * 1000) : undefined,

      type: hasImageGroup ? 'image' : 'video',

      statistics: {

        play_count: Number(statistics?.play_count || statistics?.playCount || 0),

        digg_count: Number(statistics?.digg_count || 0),

        comment_count: Number(statistics?.comment_count || 0),

        share_count: Number(statistics?.share_count || 0)

      }

    };

  }



  private pickUniqueStringValues(values: any[]): string[] {

    const uniqueValues: string[] = [];



    const collect = (value: any) => {

      if (Array.isArray(value)) {

        value.forEach(collect);

        return;

      }



      if (typeof value === 'string' && value.trim() && !uniqueValues.includes(value)) {

        uniqueValues.push(value);

      }

    };



    values.forEach(collect);

    return uniqueValues;

  }



  private getMonitorAvatarFallback(name: string): string {

    const label = (name || '博主').trim().slice(0, 2) || '博主';

    return 'data:image/svg+xml;charset=UTF-8,' + encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="160" height="160" viewBox="0 0 160 160"><rect width="160" height="160" rx="80" fill="#ff0050"/><text x="50%" y="54%" text-anchor="middle" dominant-baseline="middle" fill="#ffffff" font-size="48" font-family="Arial, sans-serif">${label}</text></svg>`);

  }



  private getErrorText(error: any, fallback: string): string {
    const candidates = [
      error?.error?.error,
      error?.error?.message,
      error?.error?.msg,
      error?.error,
      error?.message,
      error,
    ];

    for (const candidate of candidates) {
      const text = this.normalizeErrorText(candidate);
      if (text) return text;
    }

    return fallback;

  }

  private normalizeErrorText(value: any, seen = new Set<any>()): string {
    if (value == null) return '';
    if (typeof value === 'string') return value.trim();
    if (typeof value === 'number' || typeof value === 'boolean') return String(value);
    if (value instanceof Blob) return '';
    if (typeof value !== 'object') return '';
    if (seen.has(value)) return '';
    seen.add(value);

    const nestedKeys = ['message', 'msg', 'error', 'detail', 'reason'];
    for (const key of nestedKeys) {
      const nested = this.normalizeErrorText(value?.[key], seen);
      if (nested) return nested;
    }

    try {
      const serialized = JSON.stringify(value);
      return serialized && serialized !== '{}' ? serialized : '';
    } catch {
      return '';
    }
  }

  private getOfficialTtsResourceId(voiceId: string): string {
    return voiceId.includes('_uranus_bigtts') ? 'seed-tts-2.0' : 'seed-tts-1.0';
  }

  private applyVoiceSelectionToTtsPayload(
    payload: any,
    mode: 'system' | 'clone',
    systemVoiceId: string,
    timbreId: string,
  ): void {
    if (mode === 'clone' && timbreId.trim()) {
      payload.timbreId = timbreId.trim();
      return;
    }

    const voiceId = systemVoiceId.trim() || 'zh_female_shuangkuai-am_16k';
    payload.volcengine_voice_type = voiceId;
    payload.x_api_resource_id = this.getOfficialTtsResourceId(voiceId);
  }



  private async extractHttpBlobErrorMessage(error: any, fallback: string): Promise<string> {

    if (error instanceof HttpErrorResponse && error.error instanceof Blob) {

      try {

        const text = await error.error.text();

        if (text) {

          const parsed = JSON.parse(text);

          return parsed?.error || parsed?.message || fallback;

        }

      } catch {

        return fallback;

      }

    }



    return error?.error?.error || error?.error?.message || error?.message || fallback;

  }



  private serializeMonitorAuthor(author: MonitorAuthor): any {

    return {

      ...author,

      loadingWorks: false,

      works: author.works.map(work => ({

        ...work,

        createTime: work.createTime ? work.createTime.toISOString() : null,

        isDownloading: false,

        downloadProgress: 0

      }))

    };

  }



  private deserializeMonitorAuthor(author: any): MonitorAuthor {

    return {

      id: String(author?.id || ''),

      uid: String(author?.uid || ''),

      secUserId: String(author?.secUserId || ''),

      nickname: String(author?.nickname || ''),

      uniqueId: String(author?.uniqueId || ''),

      shortId: String(author?.shortId || ''),

      signature: String(author?.signature || ''),

      ipLocation: String(author?.ipLocation || ''),

      verifiedText: this.normalizeMonitorLabelText(author?.verifiedText),

      avatarUrl: String(author?.avatarUrl || this.getMonitorAvatarFallback(author?.nickname || '博主')),

      avatarCandidates: Array.isArray(author?.avatarCandidates) ? author.avatarCandidates : [],

      coverUrl: String(author?.coverUrl || ''),

      coverCandidates: Array.isArray(author?.coverCandidates) ? author.coverCandidates : [],

      followerCount: Number(author?.followerCount || 0),

      followingCount: Number(author?.followingCount || 0),

      totalFavorited: Number(author?.totalFavorited || 0),

      awemeCount: Number(author?.awemeCount || 0),

      works: Array.isArray(author?.works)

        ? author.works.map((work: any) => ({

            id: String(work?.id || ''),

            desc: String(work?.desc || ''),

            coverUrl: String(work?.coverUrl || this.getVideoCoverFallback()),

            coverCandidates: Array.isArray(work?.coverCandidates) ? work.coverCandidates : [],

            duration: Number(work?.duration || 0),

            createTime: work?.createTime ? new Date(work.createTime) : undefined,

            type: work?.type === 'image' ? 'image' : 'video',

            statistics: {

              play_count: Number(work?.statistics?.play_count || 0),

              digg_count: Number(work?.statistics?.digg_count || 0),

              comment_count: Number(work?.statistics?.comment_count || 0),

              share_count: Number(work?.statistics?.share_count || 0)

            },

            isDownloading: false,

            downloadProgress: 0

          }))

        : [],

      worksCursor: String(author?.worksCursor || '0'),

      hasMoreWorks: !!author?.hasMoreWorks,

      loadingWorks: false

    };

  }



  // 加载更多搜索结果

  loadMore(): void {

    if (!this.hasMore || this.isSearching) return;



    this.isSearching = true;

    this.douyinService.searchVideos(

      this.searchKeyword, '0', this.searchCursor, '0',

      '0', '1', this.searchId, this.searchBacktrace

    ).subscribe({

      next: (res: any) => {

        this.isSearching = false;

        const parsed = this.parseSearchResponse(res);

        const newItems = parsed.items

          .map((item: any) => this.mapVideoItem(item))

          .filter((item: VideoInfo) => !!item.aweme_id || !!item.desc || !!item.cover_url);

        this.searchResults.push(...newItems);

        this.applySearchFilters();

        this.hasMore = parsed.hasMore;

        this.searchCursor = parsed.cursor;

        this.searchId = parsed.searchId || this.searchId;

        this.searchBacktrace = parsed.backtrace || this.searchBacktrace;

        this.refreshView();

      },

      error: (error: any) => {

        console.error('加载更多失败:', error);

        this.isSearching = false;

        let errorMessage = '加载更多失败，请稍后重试';



        if (error.status === 401) {

          errorMessage = '认证失败，Token可能已失效';

        } else if (error.status === 429) {

          errorMessage = '请求过于频繁，请稍后重试';

        } else if (error.status === 0) {

          errorMessage = '网络连接失败，请检查网络设置';

        }



        alert(errorMessage);

      }

    });

  }



  // 查看视频详情

  viewVideoDetail(video: VideoInfo): void {

    this.openSearchVideoPreview(video, null, '', true);

    this.douyinService.getVideoDetail(video.aweme_id).subscribe({

      next: (res: any) => {

        const detailData = this.douyinService.extractVideoDetailData(res) || {};

        this.openSearchVideoPreview(video, detailData, this.douyinService.extractVideoPreviewUrl(res) || '', false);

      },

      error: (error: any) => {

        console.error('获取视频详情失败:', error);

        this.openSearchVideoPreview(video, null, '', false);

        this.showToast('⚠️ 获取实时详情失败，已展示基础信息', 'warn');

      }

    });

  }



  private openSearchVideoPreview(video: VideoInfo, detailData: any, previewUrl: string, loading: boolean = false): void {

    const info = detailData || {};

    const tags = this.extractVideoTags(info, video.text_extra || []);

    const rawDuration = info.video?.duration || info.duration || video.duration || 0;

    const duration = Math.floor(rawDuration / (rawDuration > 1000 ? 1000 : 1));

    const coverCandidates = detailData ? this.buildCoverCandidates(info) : [];

    const poster = coverCandidates[0] || video.cover_url || this.getVideoCoverFallback();

    const createTime = info.create_time ? new Date(info.create_time * 1000) : undefined;

    const filename = this.buildVideoFilename(video);



    this.previewVideoUrl = previewUrl ? this.buildVideoProxyUrl(previewUrl, filename) : '';

    this.previewDownloadUrl = '';

    this.previewVideoTitle = info.desc || video.desc || video.aweme_id;

    this.previewSourceVideo = video;

    this.previewVideoInfo = {

      duration: duration || video.duration || 0,

      resolution: info.video?.ratio || '',

      format: 'mp4',

      source: 'douyin',

      description: info.desc || video.desc || '',

      tags,

      created_at: createTime,

      poster,

      authorName: info.author?.nickname || video.author.nickname || '',

      playCount: info.statistics?.play_count ?? video.statistics.play_count,

      diggCount: info.statistics?.digg_count ?? video.statistics.digg_count,

      commentCount: info.statistics?.comment_count ?? video.statistics.comment_count,

      shareCount: info.statistics?.share_count ?? video.statistics.share_count,

      loading

    };

    this.showPreviewModal = true;

    this.refreshView();

  }



  private extractVideoTags(info: any, fallbackTags: string[] = []): string[] {

    const textExtraTags = Array.isArray(info?.text_extra)

      ? info.text_extra

          .map((tag: any) => tag?.hashtag_name || tag?.cha_name || tag?.tag_name || tag?.hash_tag_name || tag)

          .filter((tag: any) => typeof tag === 'string' && tag.trim())

      : [];



    const chaListTags = Array.isArray(info?.cha_list)

      ? info.cha_list

          .map((tag: any) => tag?.cha_name || tag?.hashtag_name || tag?.tag_name || tag)

          .filter((tag: any) => typeof tag === 'string' && tag.trim())

      : [];



    return [...textExtraTags, ...chaListTags, ...fallbackTags].filter((tag, index, list) => !!tag && list.indexOf(tag) === index);

  }



  private buildVideoFilename(video: VideoInfo): string {

    return `${video.author.nickname}_${video.desc || video.aweme_id}`

      .replace(/[<>:"/\\|?*]/g, '_')

      .substring(0, 60) + '.mp4';

  }



  private buildVideoProxyUrl(videoUrl: string, filename: string, download: boolean = false): string {

    const params = new URLSearchParams({

      url: videoUrl,

      filename,

      download: download ? '1' : '0'

    });



    return `/backend/api/video-proxy?${params.toString()}`;

  }



  // 下载抖音视频到本地

  downloadVideo(video: VideoInfo): void {

    if (video.isDownloading) return;



    video.isDownloading = true;

    video.downloadProgress = 0;



    // 先获取视频详情拿到下载地址

    this.douyinService.getVideoDetail(video.aweme_id).subscribe({

      next: (res: any) => {

        const detailData = this.douyinService.extractVideoDetailData(res) || {};

        const downloadUrls = this.douyinService.extractVideoDownloadUrls(res);

        const downloadUrl = downloadUrls[0] || '';

        if (!downloadUrl) {

          console.warn('未找到可用下载地址:', detailData);

          video.isDownloading = false;

          this.showToast('❌ 无法获取下载地址，请稍后重试', 'error');

          return;

        }



        const filename = this.buildVideoFilename(video);

        this.douyinService.startManagedDownload({

          url: downloadUrl,

          urls: downloadUrls,

          filename,

          title: video.desc || video.aweme_id,

          description: detailData?.desc || video.desc || '',

          tags: video.text_extra || [],

          thumbnail: video.cover_url || '',

          duration: video.duration || 0,

          resolution: detailData?.video?.ratio || '',

          awemeId: video.aweme_id,

          authorName: video.author.nickname || ''

        }).subscribe({

          next: (taskRes: any) => {

            if (!taskRes?.taskId) {

              video.isDownloading = false;

              video.downloadProgress = 0;

              this.showToast('❌ 下载任务创建失败，请稍后重试', 'error');

              return;

            }



            this.showToast(`📥 正在下载「${video.desc || video.aweme_id}」到视频库`, 'info');

            this.pollManagedDownload(video, taskRes.taskId);

          },

          error: (error: any) => {

            console.error('创建下载任务失败:', error);

            video.isDownloading = false;

            video.downloadProgress = 0;

            this.showToast(`❌ 创建下载任务失败：${error?.error?.error || error?.message || '请稍后重试'}`, 'error');

          }

        });

      },

      error: (error: any) => {

        console.error('获取视频信息失败:', error);

        video.isDownloading = false;

        this.showToast(`❌ 获取视频信息失败：${error?.error?.error || error?.message || '请稍后重试'}`, 'error');

      }

    });

  }



  downloadPreviewVideo(): void {

    if (!this.previewSourceVideo) {

      return;

    }



    this.downloadVideo(this.previewSourceVideo);

  }



  private pollManagedDownload(video: VideoInfo, taskId: string, retryCount: number = 0): void {

    this.douyinService.getManagedDownloadTask(taskId).subscribe({

      next: (task: any) => {

        video.downloadProgress = task?.progress || 0;



        if (task?.status === 'completed') {

          video.isDownloading = false;

          video.downloadProgress = 100;

          this.loadVideoManifest();

          this.showToast(`✅ 视频「${video.desc || video.aweme_id}」已下载到本地视频库`, 'success');

          this.refreshView();

          return;

        }



        if (task?.status === 'failed') {

          video.isDownloading = false;

          video.downloadProgress = 0;

          this.showToast(`❌ 下载失败：${task?.error || '请稍后重试'}`, 'error');

          this.refreshView();

          return;

        }



        this.refreshView();

        setTimeout(() => this.pollManagedDownload(video, taskId), 1000);

      },

      error: (error: any) => {

        console.error('查询下载任务失败:', error);

        if (retryCount < 3) {

          setTimeout(() => this.pollManagedDownload(video, taskId, retryCount + 1), 1500);

          return;

        }



        video.isDownloading = false;

        video.downloadProgress = 0;

        this.showToast('❌ 下载状态查询失败，请稍后重试', 'error');

        this.refreshView();

      }

    });

  }



  private pollMonitorWorkDownload(work: MonitorWork, taskId: string, retryCount: number = 0): void {

    this.douyinService.getManagedDownloadTask(taskId).subscribe({

      next: (task: any) => {

        work.downloadProgress = task?.progress || 0;



        if (task?.status === 'completed') {

          work.isDownloading = false;

          work.downloadProgress = 100;

          this.loadVideoManifest();

          this.showToast(`✅ 视频「${work.desc || work.id}」已下载到本地视频库`, 'success');

          this.refreshView();

          return;

        }



        if (task?.status === 'failed') {

          work.isDownloading = false;

          work.downloadProgress = 0;

          this.showToast(`❌ 下载失败：${task?.error || '请稍后重试'}`, 'error');

          this.refreshView();

          return;

        }



        this.refreshView();

        setTimeout(() => this.pollMonitorWorkDownload(work, taskId), 1000);

      },

      error: () => {

        if (retryCount < 3) {

          setTimeout(() => this.pollMonitorWorkDownload(work, taskId, retryCount + 1), 1500);

          return;

        }



        work.isDownloading = false;

        work.downloadProgress = 0;

        this.showToast('❌ 下载状态查询失败，请稍后重试', 'error');

        this.refreshView();

      }

    });

  }



  private buildMonitorVideoInfo(author: MonitorAuthor, work: MonitorWork): VideoInfo {

    return {

      aweme_id: work.id,

      desc: work.desc,

      cover_url: work.coverUrl,

      cover_candidates: work.coverCandidates,

      duration: work.duration,

      create_time: work.createTime ? Math.floor(work.createTime.getTime() / 1000) : 0,

      author: {

        nickname: author.nickname,

        sec_uid: author.secUserId

      },

      statistics: {

        play_count: 0,

        digg_count: work.statistics.digg_count,

        comment_count: work.statistics.comment_count,

        share_count: work.statistics.share_count

      },

      text_extra: [],

      downloadProgress: work.downloadProgress,

      isDownloading: work.isDownloading

    };

  }



  // 开始AI生成

  startAIGeneration(video: VideoInfo): void {

    console.log('开始AI生成:', video);



    // 创建新任务

    const newTask: Task = {

      id: `TASK-${Date.now()}`,

      keyword: this.searchKeyword,

      status: 'pending',

      step: 'search',

      progress: 0,

      cost: 0,

      created_at: new Date(),

      updated_at: new Date(),

      original_video_title: video.desc

    };



    this.activeTasks.unshift(newTask);

    this.setCurrentTab('tasks');



    // 模拟任务进度更新

    this.simulateTaskProgress(newTask.id);

  }



  // 模拟任务进度

  private simulateTaskProgress(taskId: string): void {

    const task = this.activeTasks.find(t => t.id === taskId);

    if (!task) return;



    const steps: Task['step'][] = ['search', 'detail', 'download', 'transcribe', 'generate'];

    let currentStepIndex = 0;



    const interval = setInterval(() => {

      if (currentStepIndex < steps.length) {

        task.step = steps[currentStepIndex];

        task.progress = Math.min((currentStepIndex + 1) * 20, 100);

        task.status = currentStepIndex === steps.length - 1 ? 'completed' : 'processing';

        task.updated_at = new Date();



        currentStepIndex++;

      } else {

        task.status = 'completed';

        task.progress = 100;

        clearInterval(interval);



        // 添加到生成结果

        this.generatedResults.unshift({

          id: `RESULT-${Date.now()}`,

          type: 'video',

          url: 'https://example.com/generated-video.mp4',

          title: `AI重塑 - ${task.keyword}`,

          created_at: new Date(),

          quality: '1080P',

          duration: '2分钟',

          cost: 2.5

        });

      }

    }, 2000);

  }



  // 获取任务状态颜色

  getTaskStatusColor(status: string): string {

    switch (status) {

      case 'pending': return 'warn';

      case 'processing': return 'accent';

      case 'completed': return 'primary';

      case 'failed': return 'warn';

      default: return '';

    }

  }



  // 获取任务状态文本

  getTaskStatusText(status: string): string {

    switch (status) {

      case 'pending': return '等待中';

      case 'processing': return '处理中';

      case 'completed': return '已完成';

      case 'failed': return '失败';

      case 'timeout': return '超时';

      default: return status;

    }

  }



  // 获取任务步骤文本

  getTaskStepText(step: string): string {

    switch (step) {

      case 'search': return '视频搜索';

      case 'detail': return '详情获取';

      case 'download': return '视频下载';

      case 'transcribe': return '语音转文字';

      case 'generate': return 'AI生成';

      case 'complete': return '完成';

      case 'vg-upload': return '上传视频';

      case 'vg-analyze': return '视频解析';

      case 'vg-script': return '脚本生成';

      case 'vg-image': return '配图生成';

      case 'vg-voice': return '语音配音';

      case 'vg-composite': return '视频合成';

      default: return step;

    }

  }



  // 判断步骤是否完成

  isStepCompleted(currentStep: string, targetStep: string): boolean {

    const steps = ['search', 'detail', 'download', 'transcribe', 'generate'];

    const currentIndex = steps.indexOf(currentStep);

    const targetIndex = steps.indexOf(targetStep);

    return currentIndex > targetIndex;

  }



  // 查看任务详情

  viewTaskDetail(task: Task): void {

    console.log('查看任务详情:', task);

  }



  // 已被用户取消的任务 ID 集合：用于中止后续 vg 流程更新进度时覆盖回 processing 状态

  private canceledTaskIds: Set<string> = new Set<string>();



  // 取消任务（实际生效：标记为 failed 并阻止后续 vg 进度回写；UI 立即刷新）

  cancelTask(task: Task): void {

    if (!task) return;

    task.status = 'failed';

    task.error_message = '用户已取消';

    task.updated_at = new Date();

    if (task.id) this.canceledTaskIds.add(task.id);

    // 若取消的是当前进行中的视频生成任务，清空 vg 运行状态，防止继续触发新请求

    if (task.type === 'video-generation' && this.vgTaskId === task.id) {

      this.vgUploading = false;

      this.vgAnalyzing = false;

      this.vgGeneratingScript = false;

      this.vgGeneratingImages = false;

      this.vgSynthesizing = false;

      this.vgCompositing = false;

      this.vgError = '已取消';

    }

    this.updateTask(task);

    this.updateTaskStats();

    this.refreshView();

    this.showToast('🛑 任务已取消', 'info');

  }



  // 获取状态颜色

  getStatusColor(status: string): string {

    switch (status) {

      case 'completed': return 'primary';

      case 'failed': return 'warn';

      default: return '';

    }

  }



  // 获取状态文本

  getStatusText(status: string): string {

    switch (status) {

      case 'completed': return '已完成';

      case 'failed': return '失败';

      default: return status;

    }

  }



  // 查看历史记录详情

  viewHistoryDetail(record: HistoryRecord): void {

    this.historyDetailRecord = record;

    this.historyDetailSegments = [];

    this.historyDetailPrimaryVideoUrl = this.findHistoryPrimaryVideoUrl(record);

    this.historyDetailLoading = !!record.remixId;

    this.showHistoryDetailModal = true;

    this.refreshView();



    const finalizeHistoryDetail = (remix: any = null) => {

      this.historyDetailSegments = this.buildHistoryDetailSegments(record, remix);

      this.historyDetailPrimaryVideoUrl = this.findHistoryPrimaryVideoUrl(record, remix);

      this.historyDetailLoading = false;

      this.refreshView();

    };



    if (record.remixId && record.videoId) {

      // 从 remix 数据加载片段详情

      this.http.get<any[]>(`/backend/api/remixes/${record.videoId}`).subscribe({

        next: (remixes) => {

          finalizeHistoryDetail(remixes.find(r => r.remixId === record.remixId));

        },

        error: () => {

          finalizeHistoryDetail();

        }

      });

    } else if (record.remixId) {

      // 尝试从所有 remix 数据中查找

      this.http.get<Record<string, any[]>>('/backend/api/remixes').subscribe({

        next: (allRemixes) => {

          let matchedRemix: any = null;

          for (const remixes of Object.values(allRemixes)) {

            const remix = remixes.find(r => r.remixId === record.remixId);

            if (remix) {

              matchedRemix = remix;

              break;

            }

          }

          finalizeHistoryDetail(matchedRemix);

        },

        error: () => {

          finalizeHistoryDetail();

        }

      });

    } else {

      finalizeHistoryDetail();

    }

  }



  closeHistoryDetail(): void {

    this.showHistoryDetailModal = false;

    this.historyDetailRecord = null;

    this.historyDetailSegments = [];

    this.historyDetailPrimaryVideoUrl = '';

    this.historyDetailLoading = false;

  }



  private findGeneratedResultForHistory(record: HistoryRecord): GeneratedResult | undefined {

    return this.generatedResults.find((result) => {

      if (record.remixId && result.remixId === record.remixId) return true;

      if (record.resultUrl && result.url === record.resultUrl) return true;

      if (record.videoId && result.videoId === record.videoId && record.styleName) {

        return result.title?.includes(record.styleName);

      }

      return false;

    });

  }



  private findHistoryPrimaryVideoUrl(record: HistoryRecord, remix?: any): string {

    const result = this.findGeneratedResultForHistory(record);

    return record.resultUrl

      || remix?.stitchUrl

      || result?.url

      || remix?.segments?.find((segment: any) => segment?.videoUrl)?.videoUrl

      || result?.segments?.find((segment: any) => segment?.videoUrl)?.videoUrl

      || '';

  }



  private buildHistoryDetailSegments(record: HistoryRecord, remix?: any): { id: string; videoUrl: string; prompt: string; status: string; narration?: string }[] {

    const remixSegments = Array.isArray(remix?.segments) ? remix.segments : [];

    const resultSegments = Array.isArray(this.findGeneratedResultForHistory(record)?.segments)

      ? this.findGeneratedResultForHistory(record)?.segments || []

      : [];

    const sourceSegments = remixSegments.length > 0 ? remixSegments : resultSegments;



    return sourceSegments.map((segment: any, index: number) => ({

      id: segment?.id || `SEG-${index + 1}`,

      videoUrl: segment?.videoUrl || '',

      prompt: segment?.prompt || '',

      status: segment?.status || 'completed',

      narration: segment?.narration || segment?.prompt || ''

    }));

  }



  // 重新生成任务

  regenerateTask(record: HistoryRecord): void {

    console.log('重新生成任务:', record);

    this.searchKeyword = record.keyword;

    this.setCurrentTab('search');

  }



  // 导出历史记录

  exportHistory(): void {

    const dataStr = JSON.stringify(this.historyRecords, null, 2);

    const dataBlob = new Blob([dataStr], { type: 'application/json' });



    const link = document.createElement('a');

    link.href = URL.createObjectURL(dataBlob);

    link.download = `history-${Date.now()}.json`;

    link.click();

  }



  // 预览结果

  previewResult(result: GeneratedResult): void {

    if (result.type === 'video') {

      this.previewVideoUrl = result.url;

      this.previewDownloadUrl = result.url;

      this.previewVideoTitle = result.title;

      this.previewSourceVideo = null;

      this.previewVideoInfo = {

        quality: result.quality,

        duration: result.duration,

        cost: result.cost,

        created_at: result.created_at

      };

      this.showPreviewModal = true;

    } else {

      window.open(result.url, '_blank');

    }

  }



  // 下载结果

  downloadResult(result: GeneratedResult): void {

    console.log('下载结果:', result);

    const link = document.createElement('a');

    link.href = result.url;

    link.download = `${result.title}.${result.type === 'video' ? 'mp4' : 'jpg'}`;

    link.click();

  }



  // 分享结果

  shareResult(result: GeneratedResult): void {

    if (navigator.share) {

      navigator.share({

        title: result.title,

        text: '查看这个由AI生成的精彩内容！',

        url: result.url

      });

    } else {

      navigator.clipboard.writeText(result.url).then(() => {

        alert('链接已复制到剪贴板');

      });

    }

  }



  // 视频管理相关方法



  // 获取过滤后的视频列表

  getFilteredVideos(): ManagedVideo[] {

    return this.managedVideos.filter(video => {

      const matchesCategory = !this.videoFilter.category || video.category === this.videoFilter.category;

      const matchesSource = !this.videoFilter.source || video.source === this.videoFilter.source;

      const matchesSearch = !this.videoFilter.searchTerm ||

        video.title.toLowerCase().includes(this.videoFilter.searchTerm.toLowerCase()) ||

        video.description.toLowerCase().includes(this.videoFilter.searchTerm.toLowerCase()) ||

        video.tags.some(tag => tag.toLowerCase().includes(this.videoFilter.searchTerm.toLowerCase()));



      return matchesCategory && matchesSource && matchesSearch;

    });

  }



  // 切换视频选择

  toggleVideoSelection(videoId: string): void {

    if (this.selectedVideos.has(videoId)) {

      this.selectedVideos.delete(videoId);

    } else {

      this.selectedVideos.add(videoId);

    }

  }



  // 获取视频可播放 URL（用于封面截帧等）

  getVideoPlayUrl(video: ManagedVideo): string {

    if (!video) return '';

    // 远程 URL（生成的视频）

    if (video.filepath && /^https?:\/\//.test(video.filepath)) return video.filepath;

    // 本地文件

    if (video.filepath) return video.filepath;

    if (video.filename) return `/backend/api/video/${video.filename}`;

    return '';

  }

  private createUploadedVideoEntry(file: File, url: string, title: string, description: string, tags: string[]): any {
    const ext = (file.name.match(/\.([a-z0-9]+)$/i)?.[1] || 'mp4').toLowerCase();
    const now = new Date().toISOString();
    return {
      id: `VID-${Date.now()}`,
      title: title || file.name.replace(/\.[^.]+$/, ''),
      filename: file.name,
      filepath: url,
      size: file.size,
      duration: 0,
      category: 'uploaded',
      tags,
      description: description || '用户上传的视频',
      source: 'uploaded',
      created_at: now,
      modified_at: now,
      metadata: {
        resolution: '未知',
        format: ext,
      },
    };
  }

  private toManagedVideo(entry: any): ManagedVideo {
    return {
      id: entry.id,
      title: entry.title || entry.filename,
      filename: entry.filename,
      filepath: entry.filepath || entry.url || `/backend/api/video/${entry.filename}`,
      size: entry.size || 0,
      duration: entry.duration || 0,
      created_at: entry.created_at ? new Date(entry.created_at) : new Date(),
      modified_at: entry.modified_at ? new Date(entry.modified_at) : new Date(),
      category: entry.category || 'uploaded',
      tags: entry.tags || [],
      description: entry.description || '',
      thumbnail: entry.thumbnail || '',
      source: entry.source || 'uploaded',
      metadata: entry.metadata || { resolution: '未知', format: 'mp4' },
      whisper: entry.whisper || undefined,
    };
  }



  // 获取来源文本

  getSourceText(source: string): string {

    switch (source) {

      case 'downloaded': return '下载';

      case 'generated': return 'AI生成';

      case 'uploaded': return '上传';

      default: return source;

    }

  }



  // 获取分类名称

  getCategoryName(categoryId: string): string {

    const category = this.videoCategories.find(cat => cat.id === categoryId);

    return category ? category.name : '未分类';

  }



  // 获取分类颜色

  getCategoryColor(categoryId: string): string {

    const category = this.videoCategories.find(cat => cat.id === categoryId);

    return category ? category.color : '#757575';

  }



  // 预览视频

  previewVideo(video: ManagedVideo): void {

    this.previewVideoUrl = video.filepath;

    this.previewDownloadUrl = video.filepath;

    this.previewVideoTitle = video.title;

    this.previewSourceVideo = null;

    this.previewVideoInfo = {

      filename: video.filename,

      size: video.size,

      duration: video.duration,

      resolution: video.metadata?.resolution || '',

      format: video.metadata?.format || 'mp4',

      source: video.source,

      description: video.description,

      tags: video.tags,

      created_at: video.created_at

    };

    this.showPreviewModal = true;

  }



  // 关闭预览

  closePreview(): void {

    this.showPreviewModal = false;

    this.previewVideoUrl = '';

    this.previewDownloadUrl = '';

    this.previewVideoTitle = '';

    this.previewVideoInfo = null;

    this.previewSourceVideo = null;

  }



  // 编辑视频

  editVideo(video: ManagedVideo): void {

    console.log('编辑视频:', video);

    // 这里可以打开视频编辑模态框

    const newTitle = prompt('编辑视频标题:', video.title);

    if (newTitle && newTitle !== video.title) {

      video.title = newTitle;

      video.modified_at = new Date();

      console.log('视频标题已更新');

    }

  }



  // 删除单个视频

  deleteVideo(video: ManagedVideo): void {

    if (confirm(`确定要删除视频「${video.title}」吗？`)) {

      this.http.delete<any>(`/backend/api/manifest/${video.id}`).subscribe({

        next: () => {

          this.managedVideos = this.managedVideos.filter(v => v.id !== video.id);

          this.selectedVideos.delete(video.id);

          this.updateCategoryCounts();

          this.showToast(`🗑️ 视频「${video.title}」已删除`, 'success');

          this.refreshView();

          console.log('视频已删除:', video.title);

        },

        error: (err) => {

          const message = err?.error?.error || '删除视频失败';

          this.showToast(`❌ ${message}`, 'error');

          console.warn('⚠️ 删除视频失败:', err);

          this.refreshView();

        }

      });

    }

  }



  // 批量删除视频

  batchDelete(): void {

    if (this.selectedVideos.size === 0) return;



    if (confirm(`确定要删除选中的 ${this.selectedVideos.size} 个视频吗？`)) {

      const selectedIds = Array.from(this.selectedVideos);

      const selectedVideos = this.managedVideos.filter(v => this.selectedVideos.has(v.id));

      let completed = 0;

      let successCount = 0;



      selectedVideos.forEach((video) => {

        this.http.delete<any>(`/backend/api/manifest/${video.id}`).subscribe({

          next: () => {

            successCount += 1;

            this.managedVideos = this.managedVideos.filter(v => v.id !== video.id);

            this.selectedVideos.delete(video.id);

            completed += 1;



            if (completed === selectedIds.length) {

              this.isSelectionMode = false;

              this.selectedVideos.clear();

              this.updateCategoryCounts();

              this.showToast(`🗑️ 已删除 ${successCount} 个视频`, 'success');

              this.refreshView();

              console.log('批量视频已删除');

            }

          },

          error: (err) => {

            completed += 1;

            console.warn(`⚠️ 删除视频失败: ${video.title}`, err);



            if (completed === selectedIds.length) {

              this.isSelectionMode = false;

              this.selectedVideos.clear();

              this.updateCategoryCounts();

              if (successCount > 0) {

                this.showToast(`⚠️ 部分删除成功，已删除 ${successCount}/${selectedIds.length} 个视频`, 'warn');

              } else {

                const message = err?.error?.error || '批量删除失败';

                this.showToast(`❌ ${message}`, 'error');

              }

              this.refreshView();

            }

          }

        });

      });

    }

  }



  // 批量导出视频

  batchExport(): void {

    if (this.selectedVideos.size === 0) return;



    const selectedVideos = this.managedVideos.filter(v => this.selectedVideos.has(v.id));

    console.log('批量导出视频:', selectedVideos.map(v => v.title));

    alert(`正在导出 ${selectedVideos.length} 个视频...`);

  }



  // 批量分类

  batchCategorize(): void {

    if (this.selectedVideos.size === 0) return;



    const categoryId = prompt(`选择分类:\n${this.videoCategories.map((cat, index) =>

      `${index + 1}. ${cat.name}`).join('\n')}`);



    if (categoryId) {

      const categoryIndex = parseInt(categoryId) - 1;

      if (categoryIndex >= 0 && categoryIndex < this.videoCategories.length) {

        const selectedCategory = this.videoCategories[categoryIndex];



        this.managedVideos.forEach(video => {

          if (this.selectedVideos.has(video.id)) {

            video.category = selectedCategory.id;

            video.modified_at = new Date();

          }

        });



        this.updateCategoryCounts();

        this.selectedVideos.clear();

        this.isSelectionMode = false;

        console.log('批量分类完成');

      }

    }

  }



  // 更新分类计数

  private updateCategoryCounts(): void {

    this.videoCategories.forEach(category => {

      category.count = this.managedVideos.filter(video => video.source === category.id || video.category === category.id).length;

    });

  }



  // ==================== 视频上传 ====================



  openUploadModal(): void {

    this.showUploadModal = true;

    this.uploadTitle = '';

    this.uploadDescription = '';

    this.uploadTags = '';

    this.uploadFile = null;

    this.uploadFileName = '';

    this.uploadProgress = 0;

    this.uploadError = '';

    this.isUploading = false;

  }



  closeUploadModal(): void {

    if (this.isUploading) return;

    this.showUploadModal = false;

    this.uploadFile = null;

    this.uploadFileName = '';

  }



  onFileSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (input.files && input.files.length > 0) {

      const file = input.files[0];

      const allowedExts = ['.mp4', '.mov', '.avi', '.webm', '.mkv'];

      const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();



      if (!allowedExts.includes(ext)) {

        this.uploadError = '不支持的文件格式，仅支持: mp4, mov, avi, webm, mkv';

        input.value = '';

        return;

      }



      if (file.size > 500 * 1024 * 1024) {

        this.uploadError = '文件大小超过限制（最大 500MB）';

        input.value = '';

        return;

      }



      this.uploadFile = file;

      this.uploadFileName = file.name;

      this.uploadError = '';



      // 自动填充标题（去掉扩展名）

      if (!this.uploadTitle) {

        this.uploadTitle = file.name.replace(/\.[^.]+$/, '');

      }

    }

  }



  uploadVideo(): void {

    if (!this.uploadFile || this.isUploading) return;

    this.isUploading = true;

    this.uploadProgress = 0;

    this.uploadError = '';

    const file = this.uploadFile;
    const title = this.uploadTitle || file.name.replace(/\.[^.]+$/, '');
    const description = this.uploadDescription || '用户上传的视频';
    const tags = this.uploadTags.trim()
      ? this.uploadTags.split(/[,，、\s]+/).filter(t => t.trim())
      : [];
    let uploadedEntry: any = null;

    this.qiniuUpload.uploadFileWithProgress(file, file.name, file.type || 'video/mp4', 'video').pipe(
      switchMap((event) => {
        if (event.state === 'progress') {
          this.uploadProgress = event.progress;
          this.refreshView();
          return of(null);
        }
        const url = event.url || '';
        if (!url) {
          throw new Error('上传失败：未返回视频 URL');
        }
        uploadedEntry = this.createUploadedVideoEntry(file, url, title, description, tags);
        return this.http.post<any>('/backend/api/manifest', uploadedEntry);
      })
    ).subscribe({
      next: (res) => {
        if (!res) return;
        this.isUploading = false;
        const entry = res?.video || res?.data || uploadedEntry;
        const newVideo = this.toManagedVideo(entry);
        this.uploadProgress = 100;
        this.managedVideos.unshift(newVideo);
        this.updateCategoryCounts();
        this.showUploadModal = false;
        this.uploadFile = null;
        this.uploadFileName = '';
        this.showToast(`✅ 视频「${newVideo.title}」上传成功！`, 'success');
        this.refreshView();
      },
      error: (err: any) => {
        this.isUploading = false;
        this.uploadError = err?.error?.error || err?.message || '上传失败';
        this.refreshView();
      }
    });

  }



  // ==================== AI重塑 — 多步骤流程 ====================



  // Step 1: 打开AI重塑模态框

  aiRemixVideo(video: ManagedVideo): void {

    if (video.isRemixing) return;

    this.remixTargetVideo = video;

    this.remixStep = 1;

    this.remixTranscript = '';

    this.remixBeautifiedTranscript = '';

    this.remixStoryboard = [];

    this.remixStyle = 'anime';

    this.remixQuality = '720p';

    this.remixFrames = 121;

    this.remixAspectRatio = '16:9';

    this.remixStatusText = '';

    this.isRemixSubmitting = false;

    this.remixResults = { total: 0, success: 0, failed: 0 };

    this.remixStitchStatus = 'idle';

    this.remixStitchUrl = '';

    this.remixStitchError = '';

    this.remixFinalVideoUrl = '';

    this.remixMode = 'standard';

    this.resetDigitalHumanState();

    this.isWhisperRunning = false;

    this.whisperStatusText = '';

    this.showManualTranscriptInput = false;

    this.showRemixModal = true;



    // 自动尝试加载Whisper处理后的文件

    this.loadWhisperFiles(video);

  }



  // 关闭重塑模态框

  closeRemixModal(): void {

    if (this.isRemixSubmitting) return;

    this.showRemixModal = false;

    this.remixTargetVideo = null;

    this.resetDigitalHumanState();

  }



  // ========== AI重塑模式选择弹窗 ==========

  openRemixModeChooser(video: ManagedVideo): void {

    if (!video || video.isRemixing) return;

    this.remixModeChooserVideo = video;

    this.showRemixModeChooser = true;

  }



  closeRemixModeChooser(): void {

    this.showRemixModeChooser = false;

    this.remixModeChooserVideo = null;

  }



  selectRemixMode(mode: 'standard' | 'digital-human'): void {

    const video = this.remixModeChooserVideo;

    this.showRemixModeChooser = false;

    this.remixModeChooserVideo = null;

    if (!video) return;



    if (mode === 'digital-human') {

      // 数字人生成：跳转到数字人合成页，并把该视频作为「参考视频」自动加载 + 分析

      this.setCurrentTab('digital-human');

      this.startDhRefFromManagedVideo(video);

      return;

    }



    // 标准AI重塑：跳转到视频生成页，并将该视频作为已上传文件自动完成第一步

    this.setCurrentTab('video-generation');

    this.startVgFromManagedVideo(video);

  }



  private async startVgFromManagedVideo(video: ManagedVideo): Promise<void> {

    try {

      this.vgReset();



      const playUrl = this.getVideoPlayUrl(video);

      const displayName = video.title || video.filename || `video-${video.id}`;



      // 优先把已存在的视频抓取为 File 对象，便于 ≤20MB 走 Gemini 直接识别

      let file: File | null = null;

      if (playUrl) {

        try {

          const resp = await fetch(playUrl);

          if (resp.ok) {

            const blob = await resp.blob();

            const mime = blob.type || 'video/mp4';

            const fileName = video.filename || `${displayName}.mp4`;

            file = new File([blob], fileName, { type: mime });

          }

        } catch (err) {

          console.warn('从已存在视频构造 File 失败，将走音频提取链路:', err);

        }

      }



      this.vgSourceFile = file;

      this.vgSourceFileName = displayName;

      this.vgSourceVideoUrl = playUrl;

      this.vgVideoId = video.id;

      this.vgStep = 2;

      this.vgUploading = false;

      this.vgUploadProgress = 100;

      this.vgError = '';



      // 复用上传成功后的后续流程：建任务 + 启动解析

      this.vgCreateTask();

      this.vgUpdateTaskProgress('vg-analyze', 15);

      this.vgStartAnalysis();

      this.cdr.detectChanges();

    } catch (err: any) {

      console.error('启动标准AI重塑失败:', err);

      this.showToast(`❌ 启动标准AI重塑失败：${err?.message || '请重试'}`, 'error');

    }

  }



  // ========================================================================

  //  数字人合成页：参考视频（独立的上传 + 分析流程，与 vg* 完全隔离）

  // ========================================================================



  // 选择本地参考视频文件

  dhRefSelectFile(event: Event): void {

    const input = event.target as HTMLInputElement;

    const file = input?.files?.[0];

    if (!file) return;

    if (!file.type.startsWith('video/')) {

      this.showToast('请选择视频文件', 'warn');

      return;

    }

    this.dhRefRevokeUrl();

    this.dhRefFile = file;

    this.dhRefFileName = file.name;

    this.dhRefFileSize = file.size;

    this.dhRefVideoUrl = URL.createObjectURL(file);

    this.dhRefVideoId = '';

    this.dhRefError = '';

    this.dhRefTranscript = '';

    this.dhRefAnalysisText = '';

    this.refreshView();

  }



  // 清除参考视频与重塑状态

  dhRefClear(): void {

    this.dhRefRevokeUrl();

    this.dhRefFile = null;

    this.dhRefFileName = '';

    this.dhRefFileSize = 0;

    this.dhRefVideoUrl = '';

    this.dhRefVideoId = '';

    this.dhRefUploading = false;

    this.dhRefUploadProgress = 0;

    this.dhRefAnalyzing = false;

    this.dhRefAnalysisText = '';

    this.dhRefTranscript = '';

    this.dhRefError = '';

    this.dhRefRewriting = false;

    this.dhRefRewriteError = '';

    this.dhRefAutoRewrite = false;

    this.refreshView();

  }



  private dhRefRevokeUrl(): void {

    if (this.dhRefVideoUrl && this.dhRefVideoUrl.startsWith('blob:')) {

      try { URL.revokeObjectURL(this.dhRefVideoUrl); } catch {}

    }

  }



  // 从视频管理页选中视频后进入：直接复用已存在的视频文件，跳过上传，自动开始分析 + 重塑

  private async startDhRefFromManagedVideo(video: ManagedVideo): Promise<void> {

    try {

      this.dhRefClear();

      this.dhRefAutoRewrite = true;



      const playUrl = this.getVideoPlayUrl(video);

      const displayName = video.title || video.filename || `video-${video.id}`;



      // 优先把已存在视频抓为 File（≤20MB 可走 Gemini 直传）

      let file: File | null = null;

      if (playUrl) {

        try {

          const resp = await fetch(playUrl);

          if (resp.ok) {

            const blob = await resp.blob();

            const mime = blob.type || 'video/mp4';

            const fileName = video.filename || `${displayName}.mp4`;

            file = new File([blob], fileName, { type: mime });

          }

        } catch (err) {

          console.warn('⚠️ 数字人参考视频：从已存在视频构造 File 失败:', err);

        }

      }



      this.dhRefFile = file;

      this.dhRefFileName = displayName;

      this.dhRefFileSize = file ? file.size : 0;

      this.dhRefVideoUrl = playUrl || '';

      this.dhRefVideoId = video.id;

      this.dhRefError = '';

      this.refreshView();



      this.dhRefStartAnalysis();

    } catch (err: any) {

      console.error('启动数字人参考视频失败:', err);

      this.showToast(`❌ 启动数字人参考视频失败：${err?.message || '请重试'}`, 'error');

    }

  }



  // 上传本地参考视频，再触发分析

  dhRefUploadAndAnalyze(): void {

    if (!this.dhRefFile || this.dhRefUploading) return;

    this.dhRefUploading = true;

    this.dhRefUploadProgress = 0;

    this.dhRefError = '';

    this.refreshView();

    const file = this.dhRefFile;
    const title = `数字人参考视频 - ${new Date().toLocaleString('zh-CN')}`;
    let uploadedEntry: any = null;

    this.qiniuUpload.uploadFileWithProgress(file, file.name, file.type || 'video/mp4', 'video').pipe(
      switchMap((event) => {
        if (event.state === 'progress') {
          this.dhRefUploadProgress = event.progress;
          this.cdr.detectChanges();
          return of(null);
        }
        const url = event.url || '';
        if (!url) throw new Error('上传失败：未返回视频 URL');
        uploadedEntry = this.createUploadedVideoEntry(file, url, title, '数字人参考视频', ['数字人']);
        return this.http.post<any>('/backend/api/manifest', uploadedEntry);
      })
    ).subscribe({
      next: (res) => {
        if (!res) return;
        const entry = res?.video || res?.data || uploadedEntry;
        this.dhRefUploading = false;
        this.dhRefVideoId = entry.id;
        const newVideo = this.toManagedVideo(entry);
        if (!this.managedVideos.some(v => v.id === newVideo.id)) {
          this.managedVideos.unshift(newVideo);
          this.updateCategoryCounts();
        }
        this.dhRefStartAnalysis();
        this.cdr.detectChanges();
      },
      error: (err) => {
        this.dhRefUploading = false;
        this.dhRefError = err?.error?.error || err?.message || '上传失败';
        this.cdr.detectChanges();
      }
    });

  }



  // 启动分析：≤20MB 直传 Gemini，>20MB 提取音轨给 Gemini 音频识别，最后降级 Whisper

  private dhRefStartAnalysis(): void {

    this.dhRefAnalyzing = true;

    this.dhRefTranscript = '';

    this.dhRefAnalysisText = '';

    this.refreshView();



    const sizeMB = this.dhRefFile ? this.dhRefFile.size / 1024 / 1024 : 0;

    if (this.dhRefFile && sizeMB <= 20) {

      this.dhRefAnalysisText = `正在将视频 (${sizeMB.toFixed(1)}MB) 发送给 Gemini 进行视频理解...`;

      this.refreshView();

      this.dhRefRunGeminiVideo();

    } else if (this.dhRefVideoId) {

      this.dhRefAnalysisText = `视频 ${sizeMB.toFixed(1)}MB 超过 Gemini 视频限制，正在提取音轨...`;

      this.refreshView();

      this.dhRefRunAudioGemini();

    } else {

      this.dhRefAnalysisText = '使用 Whisper 语音识别...';

      this.refreshView();

      this.dhRefRunWhisperFallback();

    }

  }



  private async dhRefRunGeminiVideo(): Promise<void> {

    try {

      const base64 = await this.llmService.fileToBase64(this.dhRefFile!);

      const mimeType = this.dhRefFile!.type || 'video/mp4';

      const prompt = this.buildAnalysisPrompt('video');

      this.llmService.analyzeVideo(base64, mimeType, prompt, {

        model: 'gemini-2.5-flash',

        generationConfig: { maxOutputTokens: 8192 }

      }).subscribe({

        next: (result) => {

          this.dhRefParseGeminiResult(result);

          this.dhRefAnalyzing = false;

          this.refreshView();

          this.dhRefMaybeAutoRewrite();

        },

        error: (err) => {

          console.warn('⚠️ Gemini 视频识别失败，降级 Whisper:', err);

          this.dhRefAnalysisText = 'Gemini 识别失败，正在使用 Whisper 语音识别...';

          this.refreshView();

          this.dhRefRunWhisperFallback();

        }

      });

    } catch (err) {

      console.warn('⚠️ 视频文件读取失败:', err);

      this.dhRefAnalysisText = '视频文件读取失败，正在使用 Whisper 语音识别...';

      this.refreshView();

      this.dhRefRunWhisperFallback();

    }

  }



  private dhRefRunAudioGemini(): void {

    const video = this.managedVideos.find(v => v.id === this.dhRefVideoId);
    const source = this.dhRefFile || (video ? this.getVideoPlayUrl(video) : '');
    if (!source) {
      this.dhRefAnalysisText = '缺少可访问的视频文件，无法提取音轨';
      this.refreshView();
      this.dhRefRunWhisperFallback();
      return;
    }

    from(this.browserFfmpeg.extractAudioForGemini(source, `dh-ref-${Date.now()}.m4a`)).subscribe({

      next: (audio: BrowserAudioExtractionResult) => {

          const audioSizeMB = audio.sizeMB || 0;

          this.dhRefAnalysisText = `音轨提取完成 (${audioSizeMB.toFixed(1)}MB)，正在 Gemini 音频识别...`;

          this.refreshView();

          if (audioSizeMB > 20) {

            this.dhRefAnalysisText = '音频文件仍较大，改用 Whisper 识别...';

            this.refreshView();

            this.dhRefRunWhisperFallback();

            return;

          }

          const prompt = this.buildAnalysisPrompt('audio');

          this.llmService.analyzeAudio(audio.base64, audio.mimeType || 'audio/mp4', prompt, {

            model: 'gemini-2.5-flash',

            generationConfig: { maxOutputTokens: 8192 }

          }).subscribe({

            next: (result) => {

              this.dhRefParseGeminiResult(result);

              this.dhRefAnalyzing = false;

              this.refreshView();

              this.dhRefMaybeAutoRewrite();

            },

            error: (err) => {

              console.warn('⚠️ Gemini 音频识别失败，降级 Whisper:', err);

              this.dhRefAnalysisText = 'Gemini 音频识别失败，改用 Whisper...';

              this.refreshView();

              this.dhRefRunWhisperFallback();

            }

          });

      },

      error: (err) => {

        const detail = err?.error?.error || err?.message || `HTTP ${err?.status}`;

        console.warn('⚠️ 音轨提取失败:', detail, err);

        this.dhRefAnalysisText = `音轨提取失败 (${detail})，改用 Whisper...`;

        this.refreshView();

        this.dhRefRunWhisperFallback();

      }

    });

  }



  private dhRefRunWhisperFallback(): void {

    if (!this.dhRefVideoId) {

      this.dhRefAnalyzing = false;

      this.dhRefAnalysisText = '无法降级到 Whisper：参考视频尚未上传到服务端';

      this.refreshView();

      return;

    }

    this.http.post<any>('/backend/api/whisper/transcribe', {

      videoId: this.dhRefVideoId,

      language: 'Chinese',

      model: 'large'

    }).subscribe({

      next: (res) => {

        if (res?.success && res?.transcript) {

          this.dhRefTranscript = res.transcript;

          this.dhRefAnalysisText = 'Whisper 转录完成，正在 AI 分析内容...';

          this.dhRefAutoFillTts();

          this.refreshView();

          this.dhRefDoTextAnalysis();

        } else {

          this.dhRefAnalyzing = false;

          this.dhRefAnalysisText = '语音识别完成但未返回文字稿，请手动输入';

          this.refreshView();

        }

      },

      error: (err) => {

        this.dhRefAnalyzing = false;

        this.dhRefAnalysisText = `Whisper 识别失败: ${err?.error?.error || err?.message || '未知错误'}。请手动输入文字稿。`;

        this.refreshView();

      }

    });

  }



  private dhRefDoTextAnalysis(): void {

    const systemPrompt = `你是一个专业的视频内容分析师。请基于以下视频转录文字稿，提取：

1. 视频主题和核心观点

2. 目标受众

3. 内容风格

4. 关键知识点（3-5条）

5. 改进方向

请用简洁中文回复。`;

    this.llmService.askWithSystem(systemPrompt, this.dhRefTranscript, { model: 'gemini-2.5-flash', max_tokens: 1024 }).subscribe({

      next: (analysis) => {

        this.dhRefAnalysisText = analysis || '分析完成';

        this.dhRefAnalyzing = false;

        this.refreshView();

        this.dhRefMaybeAutoRewrite();

      },

      error: () => {

        this.dhRefAnalysisText = '（AI 文本分析暂不可用，已完成 Whisper 转录）';

        this.dhRefAnalyzing = false;

        this.refreshView();

        this.dhRefMaybeAutoRewrite();

      }

    });

  }



  private dhRefParseGeminiResult(raw: string): void {

    const m = raw.match(/---TRANSCRIPT_START---([\s\S]*?)---TRANSCRIPT_END---/);

    if (m) {

      this.dhRefTranscript = m[1].trim();

      const analysisPart = raw.substring(0, raw.indexOf('---TRANSCRIPT_START---')).trim();

      this.dhRefAnalysisText = analysisPart.replace(/^【内容分析】\s*/, '') || '分析完成';

    } else {

      this.dhRefAnalysisText = raw || '分析完成';

    }

    this.dhRefAutoFillTts();

  }



  /** 把参考视频识别得到的文字稿自动填入 Step 2 口播文本（不覆盖用户已手输的内容） */

  private dhRefAutoFillTts(): void {

    const transcript = (this.dhRefTranscript || '').trim();

    if (!transcript) return;

    // 仅在口播文本为空时自动填入；用户已输入则保留

    if (!this.dhTtsText || !this.dhTtsText.trim()) {

      this.dhTtsText = transcript.slice(0, 600);

    }

  }



  /** 文字稿手动编辑时，同步反映到口播文本（前提：当前口播仍等于上一次同步值） */

  dhRefSyncToTts(newTranscript: string): void {

    const next = (newTranscript || '').slice(0, 600);

    this.dhTtsText = next;

  }



  /** 应用补充提示词预设；二次点击同一个则取消 */

  dhApplyPromptPreset(value: string): void {

    if (this.dhPrompt === value) {

      this.dhPrompt = '';

    } else {

      this.dhPrompt = value;

    }

    this.refreshView();

  }



  private buildAnalysisPrompt(kind: 'video' | 'audio'): string {

    const taskOne = kind === 'video'

      ? `从画面和音频两个维度分析：1.主题/核心观点 2.画面描述 3.目标受众 4.内容风格 5.亮点(3-5条) 6.视觉风格 7.改进建议`

      : `从音频分析：1.主题/核心观点 2.目标受众 3.内容风格 4.亮点(3-5条) 5.改进建议`;

    return `你是一个专业的内容分析师。请完成两个任务：



===== 任务一：内容分析 =====

${taskOne}



===== 任务二：完整语音转录 =====

请将所有语音内容逐字转录为中文，忠实还原、不遗漏、不改写、不总结，按自然段落分段。



请严格按以下格式输出（用分隔线区分两部分）：



【内容分析】

（任务一结果）



---TRANSCRIPT_START---

（任务二完整转录）

---TRANSCRIPT_END---`;

  }



  // 视频分析完成后自动触发（仅在通过 AI重塑入口或显式标记时）

  private dhRefMaybeAutoRewrite(): void {

    if (!this.dhRefAutoRewrite) return;

    if (!this.dhRefTranscript || !this.dhRefTranscript.trim()) return;

    this.dhRefAutoRewrite = false; // 仅触发一次

    this.dhRefRunRewrite();

  }



  // 把当前文字稿 + 内容分析交给 AI 重写为口播文本与补充提示词

  dhRefRunRewrite(): void {

    if (!this.dhRefTranscript || !this.dhRefTranscript.trim()) {

      this.dhRefRewriteError = '暂无可重塑的视频文字稿';

      this.refreshView();

      return;

    }

    this.dhRefRewriting = true;

    this.dhRefRewriteError = '';

    this.refreshView();



    const systemPrompt = `你是一位短视频数字人编剧。基于用户提供的【原始视频文字稿】和【内容分析】，请输出严格的 JSON：

{

  "ttsScript": "重塑后的口播文本，第一人称、自然口语、节奏适合数字人朗读，控制在 200 字以内",

  "dhPrompt": "数字人生成的补充提示词，描述人物动作 / 镜头语言 / 风格要求，控制在 80 字以内"

}

只返回纯 JSON 对象，不要使用 markdown 代码块、不要添加解释或前后缀。注意：JSON 字符串内部禁止出现真实换行，必须使用 \\n 转义。`;

    const userInput = `【原始文字稿】\n${this.dhRefTranscript}\n\n【内容分析】\n${this.dhRefAnalysisText || '（无）'}`;



    this.llmService.askWithSystem(systemPrompt, userInput, { model: 'gemini-2.5-flash', max_tokens: 2048 }).subscribe({

      next: (text) => {

        this.dhRefRewriting = false;

        const cleaned = (text || '').replace(/^\s*```(?:json)?\s*/i, '').replace(/\s*```\s*$/i, '').trim();

        const parsed = this.parseRewriteJson(cleaned);

        if (parsed) {

          const tts = typeof parsed.ttsScript === 'string' ? parsed.ttsScript.trim() : '';

          const prompt = typeof parsed.dhPrompt === 'string' ? parsed.dhPrompt.trim() : '';

          if (tts) this.dhTtsText = tts.slice(0, 600);

          if (prompt) this.dhPrompt = prompt.slice(0, 200);

          if (tts || prompt) {

            this.showToast('✅ 已自动填充口播文本与补充提示词', 'success');

          } else {

            this.dhRefRewriteError = 'AI 未返回有效字段，请手动整理';

          }

        } else {

          console.warn('⚠️ 解析重塑结果失败，原始返回:', cleaned);

          this.dhRefRewriteError = '解析重塑结果失败，已将原始文本填入口播文本，请手动整理';

          this.dhTtsText = (text || '').slice(0, 600);

          this.showToast('⚠️ 重塑结果解析失败，已退回原文', 'warn');

        }

        this.refreshView();

      },

      error: (err) => {

        this.dhRefRewriting = false;

        this.dhRefRewriteError = `AI 重塑失败：${this.getErrorText(err, '请重试')}`;

        this.refreshView();

      }

    });

  }



  /** 容错解析 LLM 返回的 JSON：支持 fenced 代码块、未转义换行、字段正则兜底 */

  private parseRewriteJson(raw: string): { ttsScript?: string; dhPrompt?: string } | null {

    if (!raw) return null;

    // 1) 严格解析

    try { return JSON.parse(raw); } catch {}

    // 2) 截取首个 { ... } 区段

    const braceStart = raw.indexOf('{');

    const braceEnd = raw.lastIndexOf('}');

    let candidate = braceStart >= 0 && braceEnd > braceStart ? raw.slice(braceStart, braceEnd + 1) : raw;

    // 3) 把字符串内部的裸换行/回车/制表符转义

    const sanitized = this.escapeRawControlCharsInJsonStrings(candidate);

    try { return JSON.parse(sanitized); } catch {}

    // 4) 正则兜底，逐字段抽取（兼容 "tts": "..." 中含 \" 转义）

    const fieldRegex = (key: string) => new RegExp(`"${key}"\\s*:\\s*"((?:\\\\.|[^"\\\\])*)"`, 'i');

    const ttsMatch = candidate.match(fieldRegex('ttsScript'));

    const promptMatch = candidate.match(fieldRegex('dhPrompt'));

    if (ttsMatch || promptMatch) {

      const unescape = (s: string) => s.replace(/\\n/g, '\n').replace(/\\"/g, '"').replace(/\\\\/g, '\\');

      return {

        ttsScript: ttsMatch ? unescape(ttsMatch[1]) : undefined,

        dhPrompt: promptMatch ? unescape(promptMatch[1]) : undefined,

      };

    }

    // 5) 截断兜底：若仅有 ttsScript 开头但被截断，抓到截断处为止

    const truncatedTts = candidate.match(/"ttsScript"\s*:\s*"((?:\\.|[^"\\])*)$/i);

    if (truncatedTts) {

      return { ttsScript: truncatedTts[1].replace(/\\n/g, '\n').replace(/\\"/g, '"') };

    }

    return null;

  }



  /** 在 JSON 字符串字面量内部把裸 \n \r \t 替换为转义形式，括号外的不动 */

  private escapeRawControlCharsInJsonStrings(input: string): string {

    let out = '';

    let inString = false;

    let escape = false;

    for (let i = 0; i < input.length; i++) {

      const ch = input[i];

      if (inString) {

        if (escape) { out += ch; escape = false; continue; }

        if (ch === '\\') { out += ch; escape = true; continue; }

        if (ch === '"') { inString = false; out += ch; continue; }

        if (ch === '\n') { out += '\\n'; continue; }

        if (ch === '\r') { out += '\\r'; continue; }

        if (ch === '\t') { out += '\\t'; continue; }

        out += ch;

      } else {

        if (ch === '"') { inString = true; out += ch; continue; }

        out += ch;

      }

    }

    return out;

  }



  getActiveRemixSteps(): RemixFlowStep[] {

    if (this.remixMode === 'digital-human') {

      return [

        { step: 1, label: this.digitalHumanStepLabels[0] },

        { step: 4, label: this.digitalHumanStepLabels[1] },

        { step: 5, label: this.digitalHumanStepLabels[2] },

        { step: 6, label: this.digitalHumanStepLabels[3] }

      ];

    }



    return this.remixStepLabels.map((label, index) => ({ step: index + 1, label }));

  }



  setRemixMode(mode: 'standard' | 'digital-human'): void {

    this.remixMode = mode;

    this.remixDigitalHumanError = '';

    if (mode === 'standard' && this.remixStep === 4 && this.remixStoryboard.length === 0) {

      this.remixStep = 1;

    }

  }



  private hydrateVoiceProfile(profile: any): VoiceProfile {

    const status = profile?.status === null || profile?.status === undefined || profile?.status === ''

      ? null

      : Number(profile.status);

    const synthesizedAudioUrl = String(profile?.synthesized_audio_url || '');

    const demoAudio = String(profile?.demo_audio || '');

    const latestAudioUrl = String(profile?.latest_audio_url || synthesizedAudioUrl || demoAudio || '');



    return {

      ...profile,

      creation_mode: String(profile?.creation_mode || (profile?.timbre_id ? 'clone' : 'design')),

      speaker_id: String(profile?.speaker_id || ''),

      timbre_id: String(profile?.timbre_id || profile?.timbreId || ''),

      sample_text: String(profile?.sample_text || ''),

      text_prompt: String(profile?.text_prompt || ''),

      source_audio_text: String(profile?.source_audio_text || ''),

      source_audio_name: String(profile?.source_audio_name || ''),

      source_audio_format: String(profile?.source_audio_format || ''),

      language: Number(profile?.language ?? 0),

      status,

      status_label: String(profile?.status_label || (demoAudio || synthesizedAudioUrl ? '可用' : '未知')),

      demo_audio: demoAudio,

      available_training_times: profile?.available_training_times === null || profile?.available_training_times === undefined

        ? null

        : Number(profile.available_training_times),

      image_prompt_name: String(profile?.image_prompt_name || ''),

      x_api_resource_id: String(profile?.x_api_resource_id || ''),

      model_version: String(profile?.model_version || ''),

      icl_speaker_id: String(profile?.icl_speaker_id || ''),

      occupied: !!profile?.occupied,

      synthesized_audio_url: synthesizedAudioUrl,

      synthesized_work_id: String(profile?.synthesized_work_id || ''),

      last_synthesis_text: String(profile?.last_synthesis_text || ''),

      latest_audio_url: latestAudioUrl,

      ...this.buildVoiceSynthesisDraft(profile),

      is_synthesizing: false,

      message: String(profile?.message || ''),

      request_id: String(profile?.request_id || ''),

      created_at: new Date(profile?.created_at || Date.now()),

      updated_at: profile?.updated_at ? new Date(profile.updated_at) : undefined

    };

  }



  private upsertLocalVoiceProfile(profile: VoiceProfile): void {

    const nextProfiles = [...this.voiceProfiles];

    const existingIndex = nextProfiles.findIndex((item) => (

      item.id === profile.id

      || (!!profile.timbre_id && item.timbre_id === profile.timbre_id)

    ));



    if (existingIndex >= 0) {

      nextProfiles[existingIndex] = {

        ...nextProfiles[existingIndex],

        ...profile,

        draft_synthesis_text: profile.draft_synthesis_text ?? nextProfiles[existingIndex].draft_synthesis_text,

        draft_synthesis_ssml: profile.draft_synthesis_ssml ?? nextProfiles[existingIndex].draft_synthesis_ssml,

        draft_synthesis_x_api_resource_id: profile.draft_synthesis_x_api_resource_id ?? nextProfiles[existingIndex].draft_synthesis_x_api_resource_id,

        draft_synthesis_model: profile.draft_synthesis_model ?? nextProfiles[existingIndex].draft_synthesis_model,

        draft_synthesis_format: profile.draft_synthesis_format ?? nextProfiles[existingIndex].draft_synthesis_format,

        draft_synthesis_sample_rate: profile.draft_synthesis_sample_rate ?? nextProfiles[existingIndex].draft_synthesis_sample_rate,

        draft_synthesis_speech_rate: profile.draft_synthesis_speech_rate ?? nextProfiles[existingIndex].draft_synthesis_speech_rate,

        draft_synthesis_loudness_rate: profile.draft_synthesis_loudness_rate ?? nextProfiles[existingIndex].draft_synthesis_loudness_rate,

        draft_synthesis_emotion: profile.draft_synthesis_emotion ?? nextProfiles[existingIndex].draft_synthesis_emotion,

        draft_synthesis_emotion_scale: profile.draft_synthesis_emotion_scale ?? nextProfiles[existingIndex].draft_synthesis_emotion_scale,

        draft_synthesis_enable_subtitle: profile.draft_synthesis_enable_subtitle ?? nextProfiles[existingIndex].draft_synthesis_enable_subtitle,

        draft_synthesis_silence_duration: profile.draft_synthesis_silence_duration ?? nextProfiles[existingIndex].draft_synthesis_silence_duration,

        draft_synthesis_enable_language_detector: profile.draft_synthesis_enable_language_detector ?? nextProfiles[existingIndex].draft_synthesis_enable_language_detector,

        draft_synthesis_disable_markdown_filter: profile.draft_synthesis_disable_markdown_filter ?? nextProfiles[existingIndex].draft_synthesis_disable_markdown_filter,

        draft_synthesis_disable_emoji_filter: profile.draft_synthesis_disable_emoji_filter ?? nextProfiles[existingIndex].draft_synthesis_disable_emoji_filter,

        draft_synthesis_explicit_language: profile.draft_synthesis_explicit_language ?? nextProfiles[existingIndex].draft_synthesis_explicit_language,

        is_synthesizing: false

      };

      this.voiceProfiles = nextProfiles;

      if (this.voiceSynthesisForm.profileId === nextProfiles[existingIndex].id) {

        this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(nextProfiles[existingIndex]);

      }

      return;

    }



    this.voiceProfiles = [{ ...profile, is_synthesizing: false }, ...nextProfiles];

    if (!this.voiceSynthesisForm.profileId && !String(this.voiceSynthesisForm.speakerId || '').trim() && this.canSynthesizeVoiceProfile(profile)) {

      this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(profile);

    }

  }



  private getVoiceCloneModelMeta(modelSource: any): { demoAudio: string; iclSpeakerId: string; xApiResourceId: string; modelVersion: string } {

    const model = Array.isArray(modelSource) ? (modelSource.find((item) => !!item) || {}) : (modelSource || {});

    const rawResourceId = Array.isArray(model?.x_api_resource_id)

      ? model.x_api_resource_id.find((item: any) => String(item || '').trim()) || ''

      : model?.x_api_resource_id;



    return {

      demoAudio: String(model?.demo_audio || '').trim(),

      iclSpeakerId: String(model?.icl_speaker_id || '').trim(),

      xApiResourceId: String(rawResourceId || '').trim(),

      modelVersion: String(model?.version || model?.model_version || '').trim()

    };

  }



  private buildVoiceProfileFromCloneApiResponse(response: any, fallback: {

    displayName: string;

    speakerId: string;

    sampleText: string;

    audioText: string;

    sourceAudioName: string;

    sourceAudioFormat: string;

    language: number;

  }): VoiceProfile | null {

    const timbre = response?.data?.timbre;

    if (!timbre || typeof timbre !== 'object') {

      return null;

    }



    const modelMeta = this.getVoiceCloneModelMeta(timbre?.models);

    return this.hydrateVoiceProfile({

      id: String(timbre?.objectId || `voice-${Date.now()}`),

      name: String(timbre?.name || fallback.displayName || '未命名音色'),

      creation_mode: 'clone',

      speaker_id: String(timbre?.speaker_id || fallback.speakerId || ''),

      timbre_id: String(timbre?.objectId || ''),

      sample_text: fallback.sampleText,

      source_audio_text: fallback.audioText,

      source_audio_name: fallback.sourceAudioName,

      source_audio_format: fallback.sourceAudioFormat,

      language: fallback.language,

      status: timbre?.status === null || timbre?.status === undefined || timbre?.status === '' ? null : Number(timbre.status),

      status_label: String(response?.data?.tip || (modelMeta.demoAudio ? '可用' : '未知')),

      demo_audio: modelMeta.demoAudio,

      occupied: !!timbre?.occupied,

      x_api_resource_id: modelMeta.xApiResourceId,

      model_version: modelMeta.modelVersion,

      icl_speaker_id: modelMeta.iclSpeakerId,

      latest_audio_url: modelMeta.demoAudio,

      message: String(response?.data?.tip || ''),

      created_at: timbre?.createdAt || new Date().toISOString(),

      updated_at: timbre?.updatedAt || new Date().toISOString()

    });

  }



  private applySynthesisResponseToProfile(profile: VoiceProfile, response: any, payload: {

    text: string;

    ssml: string;

    xApiResourceId: string;

    model: string;

    format: string;

    sampleRate: number;

    speechRate: number;

    loudnessRate: number;

    emotion: string;

    emotionScale: number;

    enableSubtitle: boolean;

    silenceDuration: number;

    enableLanguageDetector: boolean;

    disableMarkdownFilter: boolean;

    disableEmojiFilter: boolean;

    explicitLanguage: string;

  }): VoiceProfile {

    const audioUrl = String(response?.data?.audioUrl || '').trim();

    const workId = String(response?.data?.workId || '').trim();



    return this.hydrateVoiceProfile({

      ...profile,

      synthesized_audio_url: audioUrl || profile.synthesized_audio_url || '',

      synthesized_work_id: workId || profile.synthesized_work_id || '',

      latest_audio_url: audioUrl || profile.latest_audio_url || profile.demo_audio || '',

      last_synthesis_text: payload.text,

      last_synthesis_ssml: payload.ssml,

      last_synthesis_x_api_resource_id: payload.xApiResourceId || profile.x_api_resource_id || '',

      last_synthesis_model: payload.model,

      last_synthesis_format: payload.format,

      last_synthesis_sample_rate: payload.sampleRate,

      last_synthesis_speech_rate: payload.speechRate,

      last_synthesis_loudness_rate: payload.loudnessRate,

      last_synthesis_emotion: payload.emotion,

      last_synthesis_emotion_scale: payload.emotionScale,

      last_synthesis_enable_subtitle: payload.enableSubtitle,

      last_synthesis_silence_duration: payload.silenceDuration,

      last_synthesis_enable_language_detector: payload.enableLanguageDetector,

      last_synthesis_disable_markdown_filter: payload.disableMarkdownFilter,

      last_synthesis_disable_emoji_filter: payload.disableEmojiFilter,

      last_synthesis_explicit_language: payload.explicitLanguage,

      updated_at: new Date().toISOString()

    });

  }



  private syncVoiceProfileToBackend(profile: VoiceProfile | null | undefined): void {

    if (!profile?.id) {

      return;

    }



    this.http.post<any>('/backend/api/voice-profiles/sync', {

      ...profile,

      created_at: profile.created_at instanceof Date ? profile.created_at.toISOString() : profile.created_at,

      updated_at: profile.updated_at instanceof Date ? profile.updated_at.toISOString() : profile.updated_at

    }).subscribe({

      next: (res) => {

        if (res?.profile) {

          this.upsertLocalVoiceProfile(this.hydrateVoiceProfile(res.profile));

          this.refreshView();

        }

      },

      error: (err) => {

        console.warn('⚠️ 音色记录本地同步失败:', err);

      }

    });

  }



  private isVoiceSpeakerIdentifier(value: string): boolean {

    const normalizedValue = String(value || '').trim();

    return /^(S_|ICL_|icl_|saturn_|dit_)/.test(normalizedValue);

  }



  onVoiceSourceAudioSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) {

      return;

    }



    const file = input.files[0];

    const ext = (file.name.match(/\.[^.]+$/)?.[0] || '').toLowerCase();

    const allowedTypes = ['audio/mpeg', 'audio/mp3', 'audio/wav', 'audio/x-wav', 'audio/mp4', 'audio/x-m4a', 'audio/aac', 'audio/flac', 'audio/ogg', 'audio/opus', 'application/octet-stream'];

    const allowedExts = ['.mp3', '.wav', '.m4a', '.aac', '.flac', '.ogg', '.opus', '.pcm'];



    if ((!allowedTypes.includes(file.type) && !allowedExts.includes(ext)) || file.size <= 0) {

      this.voiceDesignError = '音频样本仅支持 mp3、wav、m4a、aac、flac、ogg、opus、pcm 格式';

      input.value = '';

      this.refreshView();

      return;

    }



    if (file.size > 20 * 1024 * 1024) {

      this.voiceDesignError = '音频样本大小不能超过 20MB';

      input.value = '';

      this.refreshView();

      return;

    }



    this.voiceSourceAudioFile = file;

    this.voiceSourceAudioName = file.name;

    this.voiceDesignError = '';

    input.value = '';

    this.refreshView();

  }



  clearVoiceSourceAudio(): void {

    this.voiceSourceAudioFile = null;

    this.voiceSourceAudioName = '';

    this.refreshView();

  }



  onVoiceDesignImageSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) {

      return;

    }



    const file = input.files[0];

    if (!String(file.type || '').startsWith('image/') || file.size <= 0) {

      this.voiceDesignError = '图片提示仅支持常见图片格式';

      input.value = '';

      this.refreshView();

      return;

    }



    if (file.size > 10 * 1024 * 1024) {

      this.voiceDesignError = '图片提示大小不能超过 10MB';

      input.value = '';

      this.refreshView();

      return;

    }



    this.voiceDesignImageFile = file;

    this.voiceDesignImageName = file.name;

    this.voiceDesignError = '';

    input.value = '';

    this.refreshView();

  }



  clearVoiceDesignImage(): void {

    this.voiceDesignImageFile = null;

    this.voiceDesignImageName = '';

    this.refreshView();

  }



  setVoiceCreateMode(mode: 'clone' | 'design' | 'synthesize'): void {

    if (this.voiceCreateMode === mode) {

      return;

    }

    this.voiceCreateMode = mode;

    this.voiceDesignError = '';

    if (mode === 'synthesize') {

      this.syncVoiceSynthesisFormSelection();

    }

    this.refreshView();

  }



  private resetVoiceCreateForm(): void {

    this.voiceForm = this.buildDefaultVoiceForm();

    this.voiceSourceAudioFile = null;

    this.voiceSourceAudioName = '';

    this.voiceDesignImageFile = null;

    this.voiceDesignImageName = '';

  }



  getVoiceProfileAudioUrl(profile: VoiceProfile | null | undefined): string {

    if (!profile) {

      return '';

    }



    return String(profile.latest_audio_url || profile.synthesized_audio_url || profile.demo_audio || '').trim();

  }



  canSynthesizeVoiceProfile(profile: VoiceProfile | null | undefined): boolean {

    if (!profile) {

      return false;

    }



    return !!String(profile.icl_speaker_id || profile.speaker_id || '').trim();

  }



  getSynthesisVoiceProfiles(): VoiceProfile[] {

    return this.voiceProfiles.filter((profile) => this.canSynthesizeVoiceProfile(profile));

  }



  getSelectedVoiceSynthesisProfile(): VoiceProfile | null {

    return this.getSynthesisVoiceProfiles().find((profile) => profile.id === this.voiceSynthesisForm.profileId) || null;

  }



  selectVoiceSynthesisProfile(profileId: string): void {

    if (!profileId) {

      this.voiceSynthesisForm = {

        ...this.voiceSynthesisForm,

        profileId: ''

      };

      this.refreshView();

      return;

    }



    const nextProfile = this.voiceProfiles.find((profile) => profile.id === profileId) || null;

    this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(nextProfile);

    this.refreshView();

  }



  openVoiceSynthesisWorkbench(profile: VoiceProfile): void {

    if (!this.canSynthesizeVoiceProfile(profile)) {

      this.showToast('❌ 当前音色缺少可用于语音合成的 speaker 标识', 'error');

      return;

    }



    this.voiceCreateMode = 'synthesize';

    this.voiceDesignError = '';

    this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(profile);

    this.refreshView();

  }



  getVoiceProfileAudioLabel(profile: VoiceProfile | null | undefined): string {

    if (!profile) {

      return '暂无可用音频';

    }



    const audioUrl = this.getVoiceProfileAudioUrl(profile);

    if (!audioUrl) {

      return '暂无可用音频';

    }



    if (audioUrl === String(profile.synthesized_audio_url || '')) {

      return '文本合成音频';

    }



    if (audioUrl === String(profile.demo_audio || '')) {

      return '试听音频';

    }



    return '音色音频';

  }



  createVoiceProfile(): void {

    if (this.isCreatingVoiceProfile) {

      return;

    }



    if (this.voiceCreateMode === 'synthesize') {

      this.submitVoiceSynthesisForm();

      return;

    }



    if (this.voiceCreateMode === 'design') {

      this.createVoiceDesignProfile();

      return;

    }



    this.createVoiceCloneProfile();

  }



  private createVoiceCloneProfile(): void {

    const speakerId = this.voiceForm.speakerId.trim();

    const displayName = this.voiceForm.displayName.trim();

    const audioText = this.voiceForm.audioText.trim();

    const sampleText = this.voiceForm.sampleText.trim();

    const synthesisText = this.voiceForm.synthesisText.trim();

    const sourceAudioFile = this.voiceSourceAudioFile;



    if (!displayName) {

      this.voiceDesignError = '请输入音色名称';

      this.refreshView();

      return;

    }



    if (!speakerId) {

      this.voiceDesignError = '请输入音色代号 speaker_id';

      this.refreshView();

      return;

    }



    if (!sourceAudioFile) {

      this.voiceDesignError = '请上传用于复刻的音频样本';

      this.refreshView();

      return;

    }



    if (!sampleText) {

      this.voiceDesignError = '请输入试听文本';

      this.refreshView();

      return;

    }



    if (sampleText.length < 4 || sampleText.length > 80) {

      this.voiceDesignError = '试听文本长度需在 4-80 字之间';

      this.refreshView();

      return;

    }



    this.isCreatingVoiceProfile = true;

    this.voiceDesignError = '';



    const finalizeCloneFlow = (profile: VoiceProfile | null, toastType: 'success' | 'warn', toastMessage: string) => {

      if (profile) {

        profile.draft_synthesis_text = profile.last_synthesis_text || synthesisText;

        this.upsertLocalVoiceProfile(profile);

        this.syncVoiceProfileToBackend(profile);

        if (this.getVoiceProfileAudioUrl(profile)) {

          this.preferredVoiceProfileId = profile.id;

        }

      }



      this.resetVoiceCreateForm();

      this.isCreatingVoiceProfile = false;

      this.showToast(toastMessage, toastType, 5000);

      this.refreshView();

    };



    this.readFileAsBase64(sourceAudioFile).then((audioBase64) => {

      const sourceAudioFormat = this.inferVoiceSourceAudioFormat(sourceAudioFile);

      this.http.post<any>(`${this.voiceTtsBaseUrl}/voice_clone`, {

        token: this.voiceApiToken,

        name: displayName,

        speaker_id: speakerId,

        audioData: {

          base64: audioBase64,

          format: sourceAudioFormat,

          ...(audioText ? { text: audioText } : {})

        },

        language: this.voiceForm.language || 0,

        extra_params: {

          demo_text: sampleText

        }

      }).subscribe({

        next: (res) => {

          const baseProfile: VoiceProfile | null = res?.profile

            ? this.hydrateVoiceProfile(res.profile)

            : this.buildVoiceProfileFromCloneApiResponse(res, {

              displayName,

              speakerId,

              sampleText,

              audioText,

              sourceAudioName: sourceAudioFile.name,

              sourceAudioFormat,

              language: this.voiceForm.language || 0

            });



          if (!synthesisText || !baseProfile) {

            finalizeCloneFlow(

              baseProfile,

              'success',

              '✅ 音色复刻完成，可在列表中继续合成文本并用于数字人生成'

            );

            return;

          }



          this.http.post<any>(`${this.voiceTtsBaseUrl}/unidirectional`, {

            token: this.voiceApiToken,

            text: synthesisText,

            timbreId: baseProfile.timbre_id || '',

            speaker_id: baseProfile.icl_speaker_id || baseProfile.speaker_id || '',

            isStream: false,

            x_api_resource_id: baseProfile.x_api_resource_id || ''

          }).subscribe({

            next: (synthesisRes) => {

              const nextProfile: VoiceProfile | null = synthesisRes?.profile

                ? this.hydrateVoiceProfile(synthesisRes.profile)

                : this.applySynthesisResponseToProfile(baseProfile, synthesisRes, {

                  text: synthesisText,

                  ssml: '',

                  xApiResourceId: baseProfile.x_api_resource_id || '',

                  model: '',

                  format: 'mp3',

                  sampleRate: 24000,

                  speechRate: 0,

                  loudnessRate: 0,

                  emotion: '',

                  emotionScale: 4,

                  enableSubtitle: false,

                  silenceDuration: 0,

                  enableLanguageDetector: false,

                  disableMarkdownFilter: false,

                  disableEmojiFilter: false,

                  explicitLanguage: ''

                });

              finalizeCloneFlow(nextProfile, 'success', '✅ 音色复刻完成，并已生成首条文本音频');

            },

            error: () => {

              finalizeCloneFlow(baseProfile, 'warn', '⚠️ 音色复刻完成，但首条文本合成失败，可稍后重试');

            }

          });

        },

        error: (err) => {

          this.isCreatingVoiceProfile = false;

          this.voiceDesignError = this.getErrorText(err, '音色复刻失败，请检查 token、speaker_id 与音频参数');

          this.showToast(`❌ ${this.voiceDesignError}`, 'error');

          this.refreshView();

        }

      });

    }).catch(() => {

      this.isCreatingVoiceProfile = false;

      this.voiceDesignError = '音频文件读取失败，请重新选择音频样本';

      this.showToast(`❌ ${this.voiceDesignError}`, 'error');

      this.refreshView();

    });

  }



  private createVoiceDesignProfile(): void {

    const speakerId = this.voiceForm.speakerId.trim();

    const displayName = this.voiceForm.displayName.trim();

    const sampleText = this.voiceForm.sampleText.trim();

    const textPrompt = this.voiceForm.textPrompt.trim();



    if (!displayName) {

      this.voiceDesignError = '请输入音色名称';

      this.refreshView();

      return;

    }



    if (!speakerId) {

      this.voiceDesignError = '请输入音色代号 speaker_id';

      this.refreshView();

      return;

    }



    if (!sampleText) {

      this.voiceDesignError = '请输入试听文本';

      this.refreshView();

      return;

    }



    if (sampleText.length > 300) {

      this.voiceDesignError = '试听文本不能超过 300 字';

      this.refreshView();

      return;

    }



    if (textPrompt.length > 200) {

      this.voiceDesignError = '文本提示词不能超过 200 字';

      this.refreshView();

      return;

    }



    if (!textPrompt && !this.voiceDesignImageFile) {

      this.voiceDesignError = '文本提示词与图片提示不能同时为空';

      this.refreshView();

      return;

    }



    this.isCreatingVoiceProfile = true;

    this.voiceDesignError = '';



    const formData = new FormData();

    formData.append('speakerId', speakerId);

    formData.append('displayName', displayName);

    formData.append('sampleText', sampleText);

    formData.append('textPrompt', textPrompt);

    formData.append('language', String(this.voiceForm.language || 0));

    if (this.voiceDesignImageFile) {

      formData.append('image', this.voiceDesignImageFile, this.voiceDesignImageFile.name);

    }



    this.http.post<any>('/backend/api/voice/design', formData).subscribe({

      next: (res) => {

        const profile: VoiceProfile | null = res?.profile

          ? this.hydrateVoiceProfile(res.profile)

          : null;



        if (profile) {

          this.upsertLocalVoiceProfile(profile);

          if (this.getVoiceProfileAudioUrl(profile)) {

            this.preferredVoiceProfileId = profile.id;

          }

        }



        this.resetVoiceCreateForm();

        this.isCreatingVoiceProfile = false;

        this.showToast('✅ 音色设计完成，可直接试听并用于数字人生成', 'success', 5000);

        this.refreshView();

      },

      error: (err) => {

        this.isCreatingVoiceProfile = false;

        this.voiceDesignError = this.getErrorText(err, '音色设计失败，请检查 speaker_id、提示词与图片参数');

        this.showToast(`❌ ${this.voiceDesignError}`, 'error');

        this.refreshView();

      }

    });

  }



  submitVoiceSynthesisForm(): void {

    const profile = this.voiceProfiles.find((item) => item.id === this.voiceSynthesisForm.profileId) || null;

    const manualVoiceId = String(this.voiceSynthesisForm.speakerId || '').trim();

    if (!profile && !manualVoiceId) {

      this.voiceDesignError = '请选择已有音色，或直接输入 timbreId / speaker_id';

      this.refreshView();

      return;

    }



    if (!profile) {

      this.voiceDesignError = '';

      if (this.isVoiceSpeakerIdentifier(manualVoiceId)) {

        this.synthesizeVoiceBySpeakerId(manualVoiceId);

        return;

      }



      const manualProfile = this.hydrateVoiceProfile({

        id: `manual-${manualVoiceId}`,

        name: `手动音色 ${manualVoiceId}`,

        creation_mode: 'manual',

        speaker_id: '',

        timbre_id: manualVoiceId,

        sample_text: '',

        source_audio_text: '',

        source_audio_name: '',

        source_audio_format: '',

        language: 0,

        status: null,

        status_label: '手动输入',

        demo_audio: '',

        x_api_resource_id: String(this.voiceSynthesisForm.xApiResourceId || '').trim(),

        model_version: String(this.voiceSynthesisForm.model || '').trim(),

        icl_speaker_id: '',

        occupied: false,

        created_at: new Date().toISOString(),

        updated_at: new Date().toISOString()

      });

      manualProfile.draft_synthesis_text = this.voiceSynthesisForm.text;

      manualProfile.draft_synthesis_ssml = this.voiceSynthesisForm.ssml;

      manualProfile.draft_synthesis_x_api_resource_id = this.voiceSynthesisForm.xApiResourceId;

      manualProfile.draft_synthesis_model = this.voiceSynthesisForm.model;

      manualProfile.draft_synthesis_format = this.voiceSynthesisForm.format;

      manualProfile.draft_synthesis_sample_rate = this.voiceSynthesisForm.sampleRate;

      manualProfile.draft_synthesis_speech_rate = this.voiceSynthesisForm.speechRate;

      manualProfile.draft_synthesis_loudness_rate = this.voiceSynthesisForm.loudnessRate;

      manualProfile.draft_synthesis_emotion = this.voiceSynthesisForm.emotion;

      manualProfile.draft_synthesis_emotion_scale = this.voiceSynthesisForm.emotionScale;

      manualProfile.draft_synthesis_enable_subtitle = this.voiceSynthesisForm.enableSubtitle;

      manualProfile.draft_synthesis_silence_duration = this.voiceSynthesisForm.silenceDuration;

      manualProfile.draft_synthesis_enable_language_detector = this.voiceSynthesisForm.enableLanguageDetector;

      manualProfile.draft_synthesis_disable_markdown_filter = this.voiceSynthesisForm.disableMarkdownFilter;

      manualProfile.draft_synthesis_disable_emoji_filter = this.voiceSynthesisForm.disableEmojiFilter;

      manualProfile.draft_synthesis_explicit_language = this.voiceSynthesisForm.explicitLanguage;

      this.synthesizeVoiceProfile(manualProfile);

      return;

    }



    this.voiceSynthesisForm.speakerId = String(profile.icl_speaker_id || profile.speaker_id || '').trim();

    profile.draft_synthesis_text = this.voiceSynthesisForm.text;

    profile.draft_synthesis_ssml = this.voiceSynthesisForm.ssml;

    profile.draft_synthesis_x_api_resource_id = this.voiceSynthesisForm.xApiResourceId;

    profile.draft_synthesis_model = this.voiceSynthesisForm.model;

    profile.draft_synthesis_format = this.voiceSynthesisForm.format;

    profile.draft_synthesis_sample_rate = this.voiceSynthesisForm.sampleRate;

    profile.draft_synthesis_speech_rate = this.voiceSynthesisForm.speechRate;

    profile.draft_synthesis_loudness_rate = this.voiceSynthesisForm.loudnessRate;

    profile.draft_synthesis_emotion = this.voiceSynthesisForm.emotion;

    profile.draft_synthesis_emotion_scale = this.voiceSynthesisForm.emotionScale;

    profile.draft_synthesis_enable_subtitle = this.voiceSynthesisForm.enableSubtitle;

    profile.draft_synthesis_silence_duration = this.voiceSynthesisForm.silenceDuration;

    profile.draft_synthesis_enable_language_detector = this.voiceSynthesisForm.enableLanguageDetector;

    profile.draft_synthesis_disable_markdown_filter = this.voiceSynthesisForm.disableMarkdownFilter;

    profile.draft_synthesis_disable_emoji_filter = this.voiceSynthesisForm.disableEmojiFilter;

    profile.draft_synthesis_explicit_language = this.voiceSynthesisForm.explicitLanguage;

    this.voiceDesignError = '';

    this.synthesizeVoiceProfile(profile);

  }



  private synthesizeVoiceBySpeakerId(speakerId: string): void {

    if (this.isDirectVoiceSynthesizing) {

      return;

    }



    const text = String(this.voiceSynthesisForm.text || '').trim();

    const ssml = String(this.voiceSynthesisForm.ssml || '').trim();

    if (!text && !ssml) {

      this.voiceDesignError = '请输入要合成的文本内容或 SSML';

      this.refreshView();

      return;

    }



    const xApiResourceId = String(this.voiceSynthesisForm.xApiResourceId || '').trim();

    const model = String(this.voiceSynthesisForm.model || '').trim();

    const format = this.normalizeVoiceSynthesisFormat(this.voiceSynthesisForm.format);

    const sampleRate = this.normalizeVoiceSynthesisSampleRate(this.voiceSynthesisForm.sampleRate);

    const speechRate = this.clampVoiceSynthesisRate(this.voiceSynthesisForm.speechRate, 0);

    const loudnessRate = this.clampVoiceSynthesisRate(this.voiceSynthesisForm.loudnessRate, 0);

    const emotion = String(this.voiceSynthesisForm.emotion || '').trim();

    const emotionScale = this.clampVoiceSynthesisEmotionScale(this.voiceSynthesisForm.emotionScale, 4);

    const enableSubtitle = !!this.voiceSynthesisForm.enableSubtitle;

    const silenceDuration = this.clampVoiceSynthesisSilenceDuration(this.voiceSynthesisForm.silenceDuration, 0);

    const explicitLanguage = String(this.voiceSynthesisForm.explicitLanguage || '').trim();



    this.voiceSynthesisForm = {

      ...this.voiceSynthesisForm,

      speakerId,

      text,

      ssml,

      xApiResourceId,

      model,

      format,

      sampleRate,

      speechRate,

      loudnessRate,

      emotion,

      emotionScale,

      enableSubtitle,

      silenceDuration,

      explicitLanguage

    };

    this.voiceDesignError = '';

    this.isDirectVoiceSynthesizing = true;

    this.directVoiceSynthesisAudioUrl = '';

    this.directVoiceSynthesisWorkId = '';

    this.directVoiceSynthesisSpeakerId = speakerId;

    this.refreshView();



    this.http.post<any>(`${this.localVoiceTtsBaseUrl}/unidirectional`, {

      token: this.voiceApiToken,

      speaker_id: speakerId,

      text,

      ssml,

      isStream: false,

      x_api_resource_id: xApiResourceId,

      model,

      audio_params: {

        format,

        sample_rate: sampleRate,

        speech_rate: speechRate,

        loudness_rate: loudnessRate,

        emotion,

        emotion_scale: emotionScale,

        enable_subtitle: enableSubtitle

      },

      additions: {

        silence_duration: silenceDuration,

        enable_language_detector: !!this.voiceSynthesisForm.enableLanguageDetector,

        disable_markdown_filter: !!this.voiceSynthesisForm.disableMarkdownFilter,

        disable_emoji_filter: !!this.voiceSynthesisForm.disableEmojiFilter,

        ...(explicitLanguage ? { explicit_language: explicitLanguage } : {})

      }

    }).subscribe({

      next: (res) => {

        this.isDirectVoiceSynthesizing = false;

        this.directVoiceSynthesisAudioUrl = String(res?.data?.audioUrl || '').trim();

        this.directVoiceSynthesisWorkId = String(res?.data?.workId || '').trim();

        this.directVoiceSynthesisSpeakerId = String(res?.speakerId || speakerId).trim();

        if (res?.profile) {

          const nextProfile = this.hydrateVoiceProfile(res.profile);

          this.upsertLocalVoiceProfile(nextProfile);

          this.syncVoiceProfileToBackend(nextProfile);

        } else {

          const matchedProfile = this.voiceProfiles.find((item) => (

            String(item.icl_speaker_id || '').trim() === speakerId

            || String(item.speaker_id || '').trim() === speakerId

          ));

          if (matchedProfile) {

            const nextProfile = this.applySynthesisResponseToProfile(matchedProfile, res, {

              text,

              ssml,

              xApiResourceId,

              model,

              format,

              sampleRate,

              speechRate,

              loudnessRate,

              emotion,

              emotionScale,

              enableSubtitle,

              silenceDuration,

              enableLanguageDetector: !!this.voiceSynthesisForm.enableLanguageDetector,

              disableMarkdownFilter: !!this.voiceSynthesisForm.disableMarkdownFilter,

              disableEmojiFilter: !!this.voiceSynthesisForm.disableEmojiFilter,

              explicitLanguage

            });

            this.upsertLocalVoiceProfile(nextProfile);

            this.syncVoiceProfileToBackend(nextProfile);

          }

        }

        this.showToast(`✅ 已使用 speaker_id「${this.directVoiceSynthesisSpeakerId}」生成语音`, 'success');

        this.refreshView();

      },

      error: (err) => {

        this.isDirectVoiceSynthesizing = false;

        this.voiceDesignError = this.getErrorText(err, '文本合成失败');

        this.showToast(`❌ ${this.voiceDesignError}`, 'error');

        this.refreshView();

      }

    });

  }



  synthesizeVoiceProfile(profile: VoiceProfile): void {

    if (profile.is_synthesizing) {

      return;

    }



    if (!this.canSynthesizeVoiceProfile(profile)) {

      this.showToast('❌ 该音色记录缺少可用于语音合成的 speaker 标识，暂时无法进行文本合成', 'error');

      return;

    }



    const text = String(profile.draft_synthesis_text || '').trim();

    const ssml = String(profile.draft_synthesis_ssml || '').trim();

    if (!text && !ssml) {

      this.showToast('❌ 请输入要合成的文本内容或 SSML', 'error');

      return;

    }



    const xApiResourceId = String(profile.draft_synthesis_x_api_resource_id || profile.x_api_resource_id || '').trim();

    const model = String(profile.draft_synthesis_model || '').trim();

    const format = this.normalizeVoiceSynthesisFormat(profile.draft_synthesis_format);

    const sampleRate = this.normalizeVoiceSynthesisSampleRate(profile.draft_synthesis_sample_rate);

    const speechRate = this.clampVoiceSynthesisRate(profile.draft_synthesis_speech_rate, 0);

    const loudnessRate = this.clampVoiceSynthesisRate(profile.draft_synthesis_loudness_rate, 0);

    const emotion = String(profile.draft_synthesis_emotion || '').trim();

    const emotionScale = this.clampVoiceSynthesisEmotionScale(profile.draft_synthesis_emotion_scale, 4);

    const enableSubtitle = !!profile.draft_synthesis_enable_subtitle;

    const silenceDuration = this.clampVoiceSynthesisSilenceDuration(profile.draft_synthesis_silence_duration, 0);

    const explicitLanguage = String(profile.draft_synthesis_explicit_language || '').trim();



    profile.is_synthesizing = true;

    this.refreshView();



    this.http.post<any>(`${this.voiceTtsBaseUrl}/unidirectional`, {

      token: this.voiceApiToken,

      text,

      ssml,

      timbreId: profile.timbre_id || '',

      speaker_id: profile.icl_speaker_id || profile.speaker_id || '',

      isStream: false,

      x_api_resource_id: xApiResourceId,

      model,

      audio_params: {

        format,

        sample_rate: sampleRate,

        speech_rate: speechRate,

        loudness_rate: loudnessRate,

        emotion,

        emotion_scale: emotionScale,

        enable_subtitle: enableSubtitle

      },

      additions: {

        silence_duration: silenceDuration,

        enable_language_detector: !!profile.draft_synthesis_enable_language_detector,

        disable_markdown_filter: !!profile.draft_synthesis_disable_markdown_filter,

        disable_emoji_filter: !!profile.draft_synthesis_disable_emoji_filter,

        ...(explicitLanguage ? { explicit_language: explicitLanguage } : {})

      }

    }).subscribe({

      next: (res) => {

        const nextProfile = res?.profile

          ? this.hydrateVoiceProfile(res.profile)

          : this.applySynthesisResponseToProfile(profile, res, {

            text,

            ssml,

            xApiResourceId,

            model,

            format,

            sampleRate,

            speechRate,

            loudnessRate,

            emotion,

            emotionScale,

            enableSubtitle,

            silenceDuration,

            enableLanguageDetector: !!profile.draft_synthesis_enable_language_detector,

            disableMarkdownFilter: !!profile.draft_synthesis_disable_markdown_filter,

            disableEmojiFilter: !!profile.draft_synthesis_disable_emoji_filter,

            explicitLanguage

          });

        nextProfile.draft_synthesis_text = text;

        nextProfile.draft_synthesis_ssml = ssml;

        nextProfile.draft_synthesis_x_api_resource_id = xApiResourceId;

        nextProfile.draft_synthesis_model = model;

        nextProfile.draft_synthesis_format = format;

        nextProfile.draft_synthesis_sample_rate = sampleRate;

        nextProfile.draft_synthesis_speech_rate = speechRate;

        nextProfile.draft_synthesis_loudness_rate = loudnessRate;

        nextProfile.draft_synthesis_emotion = emotion;

        nextProfile.draft_synthesis_emotion_scale = emotionScale;

        nextProfile.draft_synthesis_enable_subtitle = enableSubtitle;

        nextProfile.draft_synthesis_silence_duration = silenceDuration;

        nextProfile.draft_synthesis_enable_language_detector = !!profile.draft_synthesis_enable_language_detector;

        nextProfile.draft_synthesis_disable_markdown_filter = !!profile.draft_synthesis_disable_markdown_filter;

        nextProfile.draft_synthesis_disable_emoji_filter = !!profile.draft_synthesis_disable_emoji_filter;

        nextProfile.draft_synthesis_explicit_language = explicitLanguage;

        this.upsertLocalVoiceProfile(nextProfile);

        this.syncVoiceProfileToBackend(nextProfile);

        if (this.voiceSynthesisForm.profileId === nextProfile.id) {

          this.voiceSynthesisForm = this.buildVoiceSynthesisFormFromProfile(nextProfile);

        }

        if (this.getVoiceProfileAudioUrl(nextProfile)) {

          this.preferredVoiceProfileId = nextProfile.id;

        }

        this.showToast(`✅ 已为「${nextProfile.name}」生成文本音频`, 'success');

        this.refreshView();

      },

      error: (err) => {

        profile.is_synthesizing = false;

        this.showToast(`❌ ${this.getErrorText(err, '文本合成失败')}`, 'error');

        this.refreshView();

      }

    });

  }



  removeVoiceProfile(profile: VoiceProfile): void {

    if (!confirm(`确定要删除音色「${profile.name}」吗？`)) {

      return;

    }



    this.http.delete<any>(`/backend/voice-profiles/${profile.id}`).subscribe({

      next: () => {

        this.voiceProfiles = this.voiceProfiles.filter(item => item.id !== profile.id);

        this.syncVoiceSynthesisFormSelection();

        if (this.preferredVoiceProfileId === profile.id) {

          this.preferredVoiceProfileId = '';

        }

        this.showToast(`🗑️ 已删除音色「${profile.name}」`, 'success');

        this.refreshView();

      },

      error: (err) => {

        this.showToast(`❌ ${this.getErrorText(err, '删除音色失败')}`, 'error');

      }

    });

  }



  onRemixDigitalHumanImageSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) {

      return;

    }



    const file = input.files[0];

    const allowedTypes = ['image/jpeg', 'image/png', 'image/jpg', 'image/gif'];

    const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();

    const allowedExts = ['.jpg', '.jpeg', '.png', '.gif'];



    if ((!allowedTypes.includes(file.type) && !allowedExts.includes(ext)) || file.size <= 0) {

      this.remixDigitalHumanError = '仅支持 jpg、jpeg、png、gif 格式的形象图';

      input.value = '';

      this.refreshView();

      return;

    }



    if (file.size > 20 * 1024 * 1024) {

      this.remixDigitalHumanError = '形象图大小不能超过 20MB';

      input.value = '';

      this.refreshView();

      return;

    }



    this.revokeDigitalHumanPreviewUrl();

    this.remixDigitalHumanImageFile = file;

    this.remixDigitalHumanImageName = file.name;

    this.remixDigitalHumanImagePreviewUrl = URL.createObjectURL(file);

    this.remixDigitalHumanImageAssetUrl = '';

    this.remixDigitalHumanError = '';

    input.value = '';

    this.refreshView();

  }



  clearRemixDigitalHumanImage(): void {

    this.revokeDigitalHumanPreviewUrl();

    this.remixDigitalHumanImageFile = null;

    this.remixDigitalHumanImageName = '';

    this.remixDigitalHumanImageAssetUrl = '';

    this.remixDigitalHumanError = '';

    this.refreshView();

  }



  goToRemixGenerationConfig(): void {

    if (this.remixMode === 'digital-human') {

      if (!this.remixDigitalHumanImageFile) {

        this.remixDigitalHumanError = '请先上传数字人形象图';

        this.refreshView();

        return;

      }

      if (this.remixPortraitPipelineRunning) {

        this.remixDigitalHumanError = '形象图正在生成中，请稍候...';

        this.refreshView();

        return;

      }

      if (this.remixPortraitPrepareMode !== 'raw' && !this.remixGeneratedPortraitUrl) {

        this.remixDigitalHumanError = '请先点击「生成形象图」完成 AI 处理，或切换到「直接使用上传图」';

        this.refreshView();

        return;

      }



      this.remixDigitalHumanError = '';

      this.remixStep = 4;

      this.refreshView();

      return;

    }



    this.confirmTranscript();

  }



  private revokeDigitalHumanPreviewUrl(): void {

    if (this.remixDigitalHumanImagePreviewUrl) {

      URL.revokeObjectURL(this.remixDigitalHumanImagePreviewUrl);

      this.remixDigitalHumanImagePreviewUrl = '';

    }

  }



  private resetDigitalHumanState(): void {

    this.revokeDigitalHumanPreviewUrl();

    this.remixDigitalHumanImageFile = null;

    this.remixDigitalHumanImageName = '';

    this.remixDigitalHumanImageAssetUrl = '';

    this.remixDigitalHumanPrompt = '';

    this.remixDigitalHumanFastMode = false;

    this.remixDigitalHumanResolution = '1080p';

    this.remixDigitalHumanError = '';

    this.remixDigitalHumanAudioSource = 'tts';

    this.remixDigitalHumanTtsText = '';

    this.remixDigitalHumanTtsTimbreId = '';

    this.remixDigitalHumanTtsSynthesizing = false;

    this.resetPortraitPipelineState();

  }



  // ===== 数字人形象准备：自拍优化 / 对标重塑 =====

  setRemixPortraitPrepareMode(mode: 'raw' | 'normalize' | 'benchmark'): void {

    if (this.remixPortraitPipelineRunning) {

      return;

    }

    this.remixPortraitPrepareMode = mode;

    // 切换模式时清空已生成结果，避免误用

    this.remixGeneratedPortraitUrl = '';

    this.remixGeneratedFullBodyUrl = '';

    this.remixGeneratedBenchmarkSummary = '';

    this.remixPortraitPipelineError = '';

    this.remixPortraitPipelineStatus = '';

    this.remixPortraitPipelineProgress = 0;

    if (mode !== 'benchmark') {

      this.clearRemixBenchmarkImage();

    }

    this.refreshView();

  }



  onRemixBenchmarkImageSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) {

      return;

    }

    const file = input.files[0];

    const allowedTypes = ['image/jpeg', 'image/png', 'image/jpg', 'image/gif', 'image/webp'];

    const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();

    const allowedExts = ['.jpg', '.jpeg', '.png', '.gif', '.webp'];



    if ((!allowedTypes.includes(file.type) && !allowedExts.includes(ext)) || file.size <= 0) {

      this.remixPortraitPipelineError = '对标场景图仅支持 jpg、jpeg、png、gif、webp 格式';

      input.value = '';

      this.refreshView();

      return;

    }

    if (file.size > 20 * 1024 * 1024) {

      this.remixPortraitPipelineError = '对标场景图大小不能超过 20MB';

      input.value = '';

      this.refreshView();

      return;

    }



    this.revokeBenchmarkPreviewUrl();

    this.remixBenchmarkImageFile = file;

    this.remixBenchmarkImageName = file.name;

    this.remixBenchmarkImagePreviewUrl = URL.createObjectURL(file);

    this.remixPortraitPipelineError = '';

    this.remixGeneratedPortraitUrl = '';

    input.value = '';

    this.refreshView();

  }



  clearRemixBenchmarkImage(): void {

    this.revokeBenchmarkPreviewUrl();

    this.remixBenchmarkImageFile = null;

    this.remixBenchmarkImageName = '';

    this.refreshView();

  }



  private revokeBenchmarkPreviewUrl(): void {

    if (this.remixBenchmarkImagePreviewUrl) {

      URL.revokeObjectURL(this.remixBenchmarkImagePreviewUrl);

      this.remixBenchmarkImagePreviewUrl = '';

    }

  }



  private resetPortraitPipelineState(): void {

    this.remixPortraitPrepareMode = 'raw';

    this.revokeBenchmarkPreviewUrl();

    this.remixBenchmarkImageFile = null;

    this.remixBenchmarkImageName = '';

    this.remixPortraitPipelineRunning = false;

    this.remixPortraitPipelineStatus = '';

    this.remixPortraitPipelineProgress = 0;

    this.remixPortraitPipelineError = '';

    this.remixGeneratedPortraitUrl = '';

    this.remixGeneratedFullBodyUrl = '';

    this.remixGeneratedBenchmarkSummary = '';

  }



  /**

   * 一键执行形象准备链路：

   * - normalize: 仅 Step1 自拍 → 正面全身图

   * - benchmark: Step1 + Step2 + Step3 对标重塑

   */

  runPortraitPipeline(): void {

    if (this.remixPortraitPipelineRunning) {

      return;

    }

    if (!this.remixDigitalHumanImageFile) {

      this.remixPortraitPipelineError = '请先上传人物自拍/形象图';

      this.refreshView();

      return;

    }

    if (this.remixPortraitPrepareMode === 'benchmark' && !this.remixBenchmarkImageFile) {

      this.remixPortraitPipelineError = '请上传一张对标账号的场景图';

      this.refreshView();

      return;

    }



    this.remixPortraitPipelineRunning = true;

    this.remixPortraitPipelineError = '';

    this.remixPortraitPipelineProgress = 0;

    this.remixPortraitPipelineStatus = '正在上传素材...';

    this.refreshView();



    const selfieFile = this.remixDigitalHumanImageFile;

    const benchmarkFile = this.remixPortraitPrepareMode === 'benchmark' ? this.remixBenchmarkImageFile : null;



    // 1) 上传自拍 → URL

    this.jimengService.uploadFileToParse(

      selfieFile,

      `portrait-selfie-${Date.now()}-${selfieFile.name}`,

      selfieFile.type || 'image/jpeg'

    ).subscribe({

      next: (selfieUrl: string) => {

        // 2) 如需对标，先上传对标图

        const benchmarkUpload$ = benchmarkFile

          ? this.jimengService.uploadFileToParse(

              benchmarkFile,

              `portrait-benchmark-${Date.now()}-${benchmarkFile.name}`,

              benchmarkFile.type || 'image/jpeg'

            )

          : null;



        const next = (benchmarkUrl: string | null) => {

          this.portraitPipeline.buildBenchmarkedPortrait(selfieUrl, benchmarkUrl, (status, progress) => {

            this.ngZone.run(() => {

              this.remixPortraitPipelineStatus = status;

              this.remixPortraitPipelineProgress = Math.round(progress);

              this.refreshView();

            });

          }).subscribe({

            next: (result: PortraitPipelineResult) => {

              this.ngZone.run(() => {

                this.remixGeneratedFullBodyUrl = result.fullBodyUrl;

                this.remixGeneratedPortraitUrl = result.finalPortraitUrl;

                this.remixGeneratedBenchmarkSummary = result.benchmarkPrompt?.merged || '';

                this.remixPortraitPipelineRunning = false;

                this.remixPortraitPipelineStatus = '形象图生成完成';

                this.remixPortraitPipelineProgress = 100;

                this.showToast('✅ 形象图生成完成，可继续配置数字人参数', 'success');

                this.refreshView();

              });

            },

            error: (err) => {

              this.ngZone.run(() => {

                this.remixPortraitPipelineRunning = false;

                this.remixPortraitPipelineError = this.getErrorText(err, '形象图生成失败');

                this.showToast(`❌ ${this.remixPortraitPipelineError}`, 'error');

                this.refreshView();

              });

            }

          });

        };



        if (benchmarkUpload$) {

          benchmarkUpload$.subscribe({

            next: (benchmarkUrl: string) => next(benchmarkUrl),

            error: (err) => {

              this.ngZone.run(() => {

                this.remixPortraitPipelineRunning = false;

                this.remixPortraitPipelineError = this.getErrorText(err, '对标场景图上传失败');

                this.showToast(`❌ ${this.remixPortraitPipelineError}`, 'error');

                this.refreshView();

              });

            }

          });

        } else {

          next(null);

        }

      },

      error: (err) => {

        this.ngZone.run(() => {

          this.remixPortraitPipelineRunning = false;

          this.remixPortraitPipelineError = this.getErrorText(err, '形象图上传失败');

          this.showToast(`❌ ${this.remixPortraitPipelineError}`, 'error');

          this.refreshView();

        });

      }

    });

  }



  resetGeneratedPortrait(): void {

    if (this.remixPortraitPipelineRunning) {

      return;

    }

    this.remixGeneratedPortraitUrl = '';

    this.remixGeneratedFullBodyUrl = '';

    this.remixGeneratedBenchmarkSummary = '';

    this.remixPortraitPipelineStatus = '';

    this.remixPortraitPipelineProgress = 0;

    this.remixPortraitPipelineError = '';

    this.refreshView();

  }



  // ===== 数字人共享表单：选项与回调（用于 <app-digital-human-form>）=====

  get remixTimbreOptions(): TimbreOption[] {

    return (this.vsClonedTimbreList || []).map(t => ({

      id: t.objectId,

      name: t.name || t.objectId

    }));

  }



  readonly digitalHumanPromptPresets: PromptPreset[] = [

    { label: '专业播报', value: '以新闻主播的语气朗读，吐字清晰、节奏稳定、表情自信端正。' },

    { label: '亲切自然', value: '用朋友聊天的语气，亲切自然、面带微笑，语速适中略带轻松感。' },

    { label: '科技感', value: '冷静理性的科技感口吻，节奏明快、抑扬有度，强调数据与关键词。' },

    { label: '激情澎湃', value: '激情澎湃的演说家口吻，情感饱满、节奏起伏明显、富有感染力。' },

    { label: '温柔治愈', value: '温柔轻缓的语气，气息柔和、节奏放慢，适合情感与生活类内容。' },

    { label: '正式商务', value: '商务正式风格，语调克制、用词严谨，仪态端庄，适合企业宣传场景。' },

  ];



  /**

   * 视频重塑里：<app-digital-human-form> 的 (request) 事件入口。

   * 接管 startDigitalHumanGeneration 的全部任务管理逻辑，

   * 内部链路改用 DigitalHumanService 编排执行。

   */

  onRemixDhRequest(req: DigitalHumanRequest): void {

    const video = this.remixTargetVideo;

    if (!video || this.isRemixSubmitting) {

      return;

    }



    // 原视频音频时长校验（保留旧约束）

    if (req.audio.source === 'original') {

      const safeDuration = Number(video.duration || 0);

      if (safeDuration > 60) {

        this.remixDigitalHumanError = '原视频音频时长超过 60 秒，当前数字人接口不支持';

        this.showToast(`❌ ${this.remixDigitalHumanError}`, 'error');

        this.refreshView();

        return;

      }

    }



    // 同步音频来源到旧字段，让 step 5/6 已有 UI 仍能显示

    this.remixDigitalHumanAudioSource = req.audio.source === 'tts' ? 'tts' : 'original';

    this.remixDigitalHumanResolution = req.resolution || '1080p';

    this.remixDigitalHumanFastMode = !!req.fastMode;

    this.remixDigitalHumanPrompt = req.prompt || '';

    if (req.audio.source === 'tts') {

      this.remixDigitalHumanTtsText = req.audio.ttsText || '';

      this.remixDigitalHumanTtsTimbreId = req.audio.ttsTimbreId || '';

    }



    // 注入原视频 ID（form 没有这个字段，由父组件补齐）

    if (req.audio.source === 'original' && !req.audio.videoId) {

      req.audio.videoId = video.id;

    }
    if (req.audio.source === 'original') {
      req.audio.videoUrl = this.getVideoPlayUrl(video);
    }



    const styleName = '数字人生成';

    this.isRemixSubmitting = true;

    this.remixStep = 5;

    video.isRemixing = true;

    video.remixProgress = 0;

    video.remixStyle = styleName;

    this.remixResults = { total: 1, success: 0, failed: 0 };

    this.remixStatusText = '正在准备数字人素材...';

    this.remixStitchStatus = 'idle';

    this.remixStitchError = '';

    this.remixFinalVideoUrl = '';

    this.currentRemixId = `REMIX-${Date.now()}`;



    const newTask: Task = {

      id: `TASK-${Date.now()}`,

      keyword: `${video.title} - ${styleName}`,

      status: 'processing',

      step: 'generate',

      progress: 0,

      cost: 0,

      created_at: new Date(),

      updated_at: new Date(),

      original_video_title: video.title,

      duration: '数字人视频'

    };

    this.activeTasks.unshift(newTask);

    this.currentRemixTaskId = newTask.id;

    this.saveTask(newTask);



    this.showToast('数字人任务已提交，可在「任务管理」中查看进度', 'success');

    this.showRemixModal = false;



    this.digitalHumanService.generate(req).subscribe({

      next: (evt: DigitalHumanEvent) => {

        this.ngZone.run(() => {

          if (evt.type === 'progress') {

            video.remixProgress = evt.progress;

            this.remixStatusText = evt.status;

            this.updateRemixTaskProgress('generate', evt.progress);

            this.refreshView();

          } else {

            // result

            video.remixProgress = 100;

            this.remixResults.success = 1;

            this.remixFinalVideoUrl = evt.videoUrl;

            this.remixStatusText = '数字人视频生成完成';

            this.remixDigitalHumanImageAssetUrl = evt.imageUrl;

            this.createDigitalHumanVersion(video, evt.videoUrl);

            this.completeRemixTask('completed', evt.videoUrl);

            this.saveRemixSession('completed');

            video.isRemixing = false;

            this.isRemixSubmitting = false;

            this.remixStep = 6;

            this.showToast(`✅ 数字人视频已生成：${video.title}`, 'success', 6000);

            this.refreshView();

          }

        });

      },

      error: (err: any) => {

        this.ngZone.run(() => {

          this.handleDigitalHumanGenerationError(video, this.getErrorText(err, '数字人生成失败'));

        });

      }

    });

  }



  // 加载该视频关联的 Whisper 处理文件（通过后端读取）

  loadWhisperFiles(video: ManagedVideo): void {

    if (!video.whisper) {

      console.log('ℹ️ 该视频无 Whisper 转录数据，跳过自动加载');

      return;

    }



    const w = video.whisper;



    // 优先加载美化文字稿，其次原始转录

    const transcriptPath = w.beautified || w.transcript;

    if (transcriptPath) {

      this.http.get(`/backend/files/read`, { params: { path: transcriptPath }, responseType: 'text' }).subscribe({

        next: (text) => {

          this.remixTranscript = text;

          if (w.beautified) this.remixBeautifiedTranscript = text;

          console.log(`📄 已加载 Whisper 文字稿: ${transcriptPath}`);

        },

        error: () => console.log(`⚠️ 未能加载文字稿: ${transcriptPath}`)

      });

    }



    // 加载分镜脚本

    if (w.storyboard) {

      this.http.get<any>(`/backend/files/read`, { params: { path: w.storyboard } }).subscribe({

        next: (data: any) => {

          if (Array.isArray(data)) {

            this.remixStoryboard = data.map((seg: any) => ({

              id: seg.id,

              act: seg.act,

              narration: seg.narration,

              prompt: seg.prompt,

              duration: seg.duration,

              status: 'pending' as const

            }));

            console.log(`📝 已加载分镜脚本: ${this.remixStoryboard.length} 个片段`);

          }

        },

        error: () => console.log(`⚠️ 未能加载分镜脚本: ${w.storyboard}`)

      });

    }

  }



  // 下一步

  nextRemixStep(): void {

    if (this.remixStep < 6) this.remixStep++;

  }



  // 上一步

  prevRemixStep(): void {

    if (this.remixStep > 1 && !this.isRemixSubmitting) this.remixStep--;

  }



  // 使用 Whisper 生成文字稿（通过本地后端）

  generateTranscript(): void {

    if (!this.remixTargetVideo || this.isWhisperRunning) return;



    const video = this.remixTargetVideo;

    this.isWhisperRunning = true;

    this.whisperStatusText = '正在检查 Whisper 服务...';



    // 先检查后端是否可用

    this.http.get<any>('/backend/api/health').subscribe({

      next: () => {

        // 后端可用，调用 Whisper 转录

        this.whisperStatusText = '正在调用 Whisper 语音识别，视频较长时可能需要数分钟...';



        this.http.post<any>('/backend/api/whisper/transcribe', {

          videoId: video.id,

          language: 'Chinese',

          model: 'base'

        }).subscribe({

          next: (res: any) => {

            if (res?.success && res?.transcript) {

              this.remixTranscript = res.transcript;

              this.whisperStatusText = '✅ 识别完成！';

              this.isWhisperRunning = false;



              // 后端已自动更新 manifest，同步前端的 whisper 字段

              if (res.whisper) {

                video.whisper = res.whisper;

              }

              console.log('✅ Whisper 转录完成，manifest 已更新');

            } else {

              this.whisperStatusText = '识别完成但未返回文字稿';

              this.isWhisperRunning = false;

              this.showManualTranscriptInput = true;

            }

          },

          error: (err) => {

            console.error('Whisper 转录失败:', err);

            const msg = err?.error?.error || err?.error?.hint || '转录过程出错';

            this.whisperStatusText = `❌ ${msg}`;

            this.isWhisperRunning = false;

            this.showManualTranscriptInput = true;

          }

        });

      },

      error: () => {

        // 后端不可用，降级为手动方案

        this.onWhisperFallback(video);

      }

    });

  }



  // 后端不可用时的降级方案

  private onWhisperFallback(video: ManagedVideo): void {

    this.isWhisperRunning = false;

    this.whisperStatusText = '';

    const cmd = `whisper "data/videos/${video.filename}" --model base --language Chinese --output_dir "Whisper"`;



    navigator.clipboard.writeText(cmd).then(() => {

      alert(

        `后端服务未启动。请先在终端运行:\n\nnpm run server\n\n` +

        `或手动执行 Whisper 命令（已复制到剪贴板）:\n\n${cmd}`

      );

    }).catch(() => {

      alert(`后端服务未启动。请先运行 npm run server，或手动执行:\n\n${cmd}`);

    });

    this.showManualTranscriptInput = true;

  }



  // Step 1 → 2: 确认文字稿，进入AI美化

  confirmTranscript(): void {

    if (!this.remixTranscript.trim()) return;

    this.remixStep = 2;

    // 自动执行AI美化

    this.beautifyTranscript();

  }



  // Step 2: AI美化文字稿（当前为本地处理，后续可接入LLM API）

  beautifyTranscript(): void {

    let text = this.remixTranscript;

    // 去除口语化词汇

    const fillerWords = ['嗯', '啊', '呢', '吧', '哦', '额', '那个', '就是说', '然后呢', '对吧'];

    fillerWords.forEach(w => { text = text.replace(new RegExp(w, 'g'), ''); });

    // 去除多余空格和空行

    text = text.replace(/\s+/g, ' ').trim();

    // 按句号/问号/感叹号分句，重新组织段落

    const sentences = text.split(/(?<=[。！？.!?])/g).filter(s => s.trim());

    const paragraphs: string[] = [];

    let current = '';

    sentences.forEach(s => {

      current += s.trim();

      if (current.length >= 60) {

        paragraphs.push(current);

        current = '';

      }

    });

    if (current) paragraphs.push(current);

    this.remixBeautifiedTranscript = paragraphs.join('\n\n');

    if (!this.remixBeautifiedTranscript.trim()) {

      this.remixBeautifiedTranscript = this.remixTranscript;

    }

  }



  // Step 2 → 3: 确认美化文字稿，生成分镜脚本

  confirmBeautified(): void {

    if (!this.remixBeautifiedTranscript.trim()) return;

    this.generateStoryboard();

    this.remixStep = 3;

  }



  // Step 3: 根据美化文字稿生成分镜脚本（参考SKILL.md Stage 1）

  generateStoryboard(): void {

    const text = this.remixBeautifiedTranscript;

    // 按约40-45个中文字（≈15秒语速）拆分为分镜段

    const segmentCharLen = 42;

    const segments: StoryboardSegment[] = [];

    // 优先按段落分割

    const paragraphs = text.split(/\n+/).filter(p => p.trim());

    let charBuffer = '';

    let segIndex = 0;



    const pushSegment = (narration: string) => {

      segIndex++;

      const id = `S-${String(segIndex).padStart(2, '0')}`;

      const act = segIndex === 1 ? '开场' : (segIndex <= 3 ? '引入' : '正文');

      const stylePrompt = this.remixStyleOptions.find(s => s.id === this.remixStyle)?.prompt || '';

      // 生成英文提示词：风格 + 场景描述

      const prompt = `${stylePrompt}, cinematic scene depicting: ${narration.substring(0, 80)}`;

      segments.push({

        id,

        act,

        narration: narration.trim(),

        prompt,

        duration: this.remixFrames === 121 ? '5s' : '10s',

        status: 'pending'

      });

    };



    paragraphs.forEach(para => {

      charBuffer += para;

      while (charBuffer.length >= segmentCharLen) {

        // 尝试在句子边界切割

        let cutPos = segmentCharLen;

        const searchRange = charBuffer.substring(0, segmentCharLen + 15);

        const punctPos = Math.max(

          searchRange.lastIndexOf('。'),

          searchRange.lastIndexOf('！'),

          searchRange.lastIndexOf('？'),

          searchRange.lastIndexOf('，'),

          searchRange.lastIndexOf('；')

        );

        if (punctPos > segmentCharLen * 0.5) cutPos = punctPos + 1;

        pushSegment(charBuffer.substring(0, cutPos));

        charBuffer = charBuffer.substring(cutPos);

      }

    });

    // 剩余部分

    if (charBuffer.trim().length > 0) {

      pushSegment(charBuffer);

    }



    this.remixStoryboard = segments;

    console.log(`📝 分镜脚本生成完毕：${segments.length} 个片段`);

  }



  // Step 3 → 4: 确认分镜，进入参数配置

  confirmStoryboard(): void {

    if (this.remixStoryboard.length === 0) return;

    this.remixStep = 4;

  }



  // Step 4 → 5: 开始批量生成

  startBatchGeneration(): void {

    if (this.isRemixSubmitting) return;



    if (this.remixMode === 'digital-human') {

      this.startDigitalHumanGeneration();

      return;

    }



    if (this.remixStoryboard.length === 0) return;



    const video = this.remixTargetVideo!;

    const styleName = this.remixStyleOptions.find(s => s.id === this.remixStyle)?.name || this.remixStyle;



    this.isRemixSubmitting = true;

    this.remixStep = 5;

    video.isRemixing = true;

    video.remixProgress = 0;

    video.remixStyle = styleName;

    this.remixResults = { total: this.remixStoryboard.length, success: 0, failed: 0 };

    this.remixStatusText = '正在提交生成任务...';

    this.currentRemixId = `REMIX-${Date.now()}`;



    // 创建持久化任务

    const newTask: Task = {

      id: `TASK-${Date.now()}`,

      keyword: `${video.title} - ${styleName}`,

      status: 'processing',

      step: 'generate',

      progress: 0,

      cost: 0,

      created_at: new Date(),

      updated_at: new Date(),

      original_video_title: video.title,

      duration: `${this.remixStoryboard.length} 个片段`

    };

    this.activeTasks.unshift(newTask);

    this.currentRemixTaskId = newTask.id;

    this.saveTask(newTask);



    // 显示 toast 并关闭模态框

    this.showToast(`任务已提交，可在「任务管理」中查看进度`, 'success');

    this.showRemixModal = false;



    console.log(`🎨 开始批量生成 ${this.remixStoryboard.length} 个分镜视频, 任务ID: ${newTask.id}`);



    // 逐个提交（串行，避免频率限制）

    this.generateSegmentSequentially(0, video, styleName);

  }



  private startDigitalHumanGeneration(): void {

    if (!this.remixTargetVideo || !this.remixDigitalHumanImageFile || this.isRemixSubmitting) {

      return;

    }



    const video = this.remixTargetVideo;

    const isTtsMode = this.remixDigitalHumanAudioSource === 'tts';



    if (!isTtsMode) {

      const safeDuration = Number(video.duration || 0);

      if (safeDuration > 60) {

        this.remixDigitalHumanError = '原视频音频时长超过 60 秒，当前数字人接口不支持';

        this.showToast(`❌ ${this.remixDigitalHumanError}`, 'error');

        this.refreshView();

        return;

      }

    }



    if (isTtsMode) {

      if (!this.remixDigitalHumanTtsTimbreId.trim()) {

        this.remixDigitalHumanError = '请输入或选择音色 ID（可在「语音合成」标签页中复刻获取）';

        this.refreshView();

        return;

      }

      if (!this.remixDigitalHumanTtsText.trim()) {

        this.remixDigitalHumanError = '请输入要合成的语音文本';

        this.refreshView();

        return;

      }

    }



    const styleName = '数字人生成';

    this.isRemixSubmitting = true;

    this.remixStep = 5;

    video.isRemixing = true;

    video.remixProgress = 0;

    video.remixStyle = styleName;

    this.remixResults = { total: 1, success: 0, failed: 0 };

    this.remixStatusText = '正在准备数字人素材...';

    this.remixStitchStatus = 'idle';

    this.remixStitchError = '';

    this.remixFinalVideoUrl = '';

    this.currentRemixId = `REMIX-${Date.now()}`;



    const newTask: Task = {

      id: `TASK-${Date.now()}`,

      keyword: `${video.title} - ${styleName}`,

      status: 'processing',

      step: 'generate',

      progress: 0,

      cost: 0,

      created_at: new Date(),

      updated_at: new Date(),

      original_video_title: video.title,

      duration: '数字人视频'

    };

    this.activeTasks.unshift(newTask);

    this.currentRemixTaskId = newTask.id;

    this.saveTask(newTask);



    this.showToast('数字人任务已提交，可在「任务管理」中查看进度', 'success');

    this.showRemixModal = false;



    // 若已通过形象准备链路生成对标/规范化形象图，则直接复用其 URL，跳过原图上传

    const ensureImage$: Observable<string> = this.remixGeneratedPortraitUrl

      ? of(this.remixGeneratedPortraitUrl)

      : this.jimengService.uploadFileToParse(

          this.remixDigitalHumanImageFile,

          `digital-human-${Date.now()}-${this.remixDigitalHumanImageFile.name}`,

          this.remixDigitalHumanImageFile.type || 'image/jpeg'

        );



    ensureImage$.subscribe({

      next: (imageUrl: string) => {

        this.remixDigitalHumanImageAssetUrl = imageUrl;

        video.remixProgress = 10;

        this.updateRemixTaskProgress('generate', 10);



        if (isTtsMode) {

          this.remixStatusText = '形象图上传完成，正在合成语音...';

          this.remixDigitalHumanTtsSynthesizing = true;

          this.refreshView();



          this.http.post<any>('https://server.fmode.cn/api/volcengine/tts/unidirectional', {

            token: 'Bearer r:f0333969e312a40e4703e8fe4ed1c600',

            text: this.remixDigitalHumanTtsText.trim(),

            timbreId: this.remixDigitalHumanTtsTimbreId.trim(),

            isStream: false,

            audio_params: {

              format: 'mp3',

              sample_rate: 24000,

              speech_rate: 0,

              loudness_rate: 0

            }

          }).subscribe({

            next: (res) => {

              this.remixDigitalHumanTtsSynthesizing = false;

              if (res?.code === 200 && res?.data?.audioUrl) {

                video.remixProgress = 30;

                this.remixStatusText = '语音合成完成，正在识别数字人主体...';

                this.updateRemixTaskProgress('generate', 30);

                this.startDigitalHumanGenerationWithAudio(video, imageUrl, res.data.audioUrl);

              } else {

                this.handleDigitalHumanGenerationError(video, res?.error?.message || '语音合成失败，请检查音色ID和文本');

              }

            },

            error: (err) => {

              this.remixDigitalHumanTtsSynthesizing = false;

              this.handleDigitalHumanGenerationError(video, this.getErrorText(err, '语音合成请求失败'));

            }

          });

        } else {

          this.remixStatusText = '形象图上传完成，正在提取原视频音频...';

          this.refreshView();



          const source = this.getVideoPlayUrl(video);
          from(this.browserFfmpeg.extractAudioBlob(
            source,
            `${video.filename.replace(/\.[^.]+$/, '') || 'source-audio'}.m4a`,
          )).subscribe({

            next: (audioFile: File) => {

              video.remixProgress = 20;

              this.remixStatusText = '音频提取完成，正在上传音频素材...';

              this.updateRemixTaskProgress('generate', 20);



              this.jimengService.uploadFileToParse(audioFile, audioFile.name, audioFile.type).subscribe({

                next: (audioUrl: string) => {

                  video.remixProgress = 30;

                  this.remixStatusText = '素材准备完成，正在识别数字人主体...';

                  this.updateRemixTaskProgress('generate', 30);

                  this.startDigitalHumanGenerationWithAudio(video, imageUrl, audioUrl);

                },

                error: (err) => {

                  this.handleDigitalHumanGenerationError(video, err?.message || '上传音频素材失败');

                }

              });

            },

            error: (err: any) => {

              this.handleDigitalHumanGenerationError(video, err?.message || '浏览器提取原视频音频失败');

            }

          });

        }

      },

      error: (err) => {

        this.handleDigitalHumanGenerationError(video, err?.message || '上传数字人形象图失败');

      }

    });

  }



  private startDigitalHumanGenerationWithAudio(video: ManagedVideo, imageUrl: string, audioUrl: string): void {

    this.jimengService.identifyDigitalHuman(imageUrl).subscribe({

      next: ({ workId }) => {

        this.jimengService.pollDigitalHumanIdentifyUntilReady(workId, (status, progress) => {

          const mappedProgress = Math.min(30 + progress * 0.2, 50);

          video.remixProgress = mappedProgress;

          this.remixStatusText = status;

          this.updateRemixTaskProgress('generate', mappedProgress);

        }).subscribe({

          next: () => {

            this.remixStatusText = '主体识别完成，开始生成数字人视频...';

            video.remixProgress = 50;

            this.updateRemixTaskProgress('generate', 50);



            this.jimengService.generateDigitalHuman(workId, audioUrl, {

              prompt: this.remixDigitalHumanPrompt,

              peFastMode: this.remixDigitalHumanResolution === '720p' ? true : this.remixDigitalHumanFastMode,

              outputResolution: this.remixDigitalHumanResolution,

              maskUrl: []

            }, (status, progress) => {

              const mappedProgress = Math.min(50 + progress * 0.45, 95);

              video.remixProgress = mappedProgress;

              this.remixStatusText = status;

              this.updateRemixTaskProgress('generate', mappedProgress);

            }).subscribe({

              next: (result) => {

                video.remixProgress = 100;

                this.remixResults.success = 1;

                this.remixFinalVideoUrl = result.videoUrl;

                this.remixStatusText = '数字人视频生成完成';

                this.createDigitalHumanVersion(video, result.videoUrl);

                this.completeRemixTask('completed', result.videoUrl);

                this.saveRemixSession('completed');

                video.isRemixing = false;

                this.isRemixSubmitting = false;

                this.remixStep = 6;

                this.showToast(`✅ 数字人视频已生成：${video.title}`, 'success', 6000);

                this.refreshView();

              },

              error: (err) => {

                this.handleDigitalHumanGenerationError(video, err?.message || '数字人生成失败');

              }

            });

          },

          error: (err) => {

            this.handleDigitalHumanGenerationError(video, err?.message || '数字人主体识别失败');

          }

        });

      },

      error: (err) => {

        this.handleDigitalHumanGenerationError(video, err?.message || '提交数字人主体识别失败');

      }

    });

  }



  private handleDigitalHumanGenerationError(video: ManagedVideo, message: string): void {

    video.isRemixing = false;

    video.remixProgress = 0;

    this.isRemixSubmitting = false;

    this.remixResults.failed = 1;

    this.remixStep = 6;

    this.remixStatusText = message;

    this.remixStitchStatus = 'failed';

    this.remixStitchError = message;

    this.completeRemixTask('failed', undefined, message);

    this.saveRemixSession('failed');

    this.showToast(`❌ ${message}`, 'error');

    this.refreshView();

  }



  // 串行生成每个分镜段的视频

  private generateSegmentSequentially(index: number, video: ManagedVideo, styleName: string): void {

    if (index >= this.remixStoryboard.length) {

      // 全部完成

      this.onBatchGenerationComplete(video, styleName);

      return;

    }



    const segment = this.remixStoryboard[index];

    segment.status = 'generating';

    const totalSegments = this.remixStoryboard.length;

    this.remixStatusText = `正在生成第 ${index + 1}/${totalSegments} 个片段...`;

    video.remixProgress = (index / totalSegments) * 100;



    // 更新任务进度

    this.updateRemixTaskProgress('generate', (index / totalSegments) * 80);



    this.jimengService.remixVideo(

      segment.prompt,

      {

        method: '1',

        frames: this.remixFrames,

        aspectRatio: this.remixAspectRatio,

        quality: this.remixQuality

      },

      (status: string, progress: number) => {

        // 单片段内进度映射到总进度

        const segProgress = (index + progress / 100) / totalSegments * 100;

        video.remixProgress = segProgress;

        this.remixStatusText = `片段 ${index + 1}/${totalSegments}: ${status}`;

      }

    ).subscribe({

      next: (result) => {

        segment.status = 'completed';

        segment.videoUrl = result.videoUrl;

        segment.workId = result.workId;

        this.remixResults.success++;



        // 添加到生成结果

        this.generatedResults.unshift({

          id: `REMIX-${Date.now()}-${segment.id}`,

          type: 'video',

          url: result.videoUrl,

          title: `${video.title} - ${styleName} [${segment.id}]`,

          created_at: new Date(),

          quality: this.remixQuality === 'pro' ? '1080P Pro' : '720P',

          duration: this.remixFrames === 121 ? '5秒' : '10秒',

          cost: this.remixQuality === 'pro' ? 5.0 : 1.4

        });



        console.log(`✅ 片段 ${segment.id} 完成: ${result.videoUrl}`);

        // 自动保存当前会话

        this.saveRemixSession('generating');

        // 延迟1秒再提交下一个（避免频率限制）

        setTimeout(() => this.generateSegmentSequentially(index + 1, video, styleName), 1000);

      },

      error: (err) => {

        segment.status = 'failed';

        segment.error = err.message || '生成失败';

        this.remixResults.failed++;

        console.error(`❌ 片段 ${segment.id} 失败:`, err);

        this.saveRemixSession('generating');

        // 失败也继续下一个

        setTimeout(() => this.generateSegmentSequentially(index + 1, video, styleName), 1000);

      }

    });

  }



  // 批量生成完成 → 自动触发一键成片拼接

  private onBatchGenerationComplete(video: ManagedVideo, styleName: string): void {

    this.remixStep = 6;

    this.remixStatusText = `片段生成完成：成功 ${this.remixResults.success}/${this.remixResults.total}`;

    console.log(`🎉 批量生成完成: 成功${this.remixResults.success}, 失败${this.remixResults.failed}`);



    // 更新任务进度到80%

    this.updateRemixTaskProgress('generate', 80);



    // 收集所有成功片段的视频URL

    const successUrls = this.remixStoryboard

      .filter(s => s.status === 'completed' && s.videoUrl)

      .map(s => s.videoUrl!);



    if (successUrls.length < 1) {

      video.isRemixing = false;

      video.remixProgress = 100;

      this.isRemixSubmitting = false;

      this.remixStitchStatus = 'failed';

      this.remixStitchError = '没有成功的视频片段可以拼接';

      this.remixStatusText = `生成完成，但没有可拼接的片段`;

      this.completeRemixTask('failed', undefined, '所有片段生成失败');

      this.saveRemixSession('failed');

      this.showToast('任务失败：所有片段生成失败', 'error');

      return;

    }



    // 一键成片功能暂时关闭（Quickly API 凭证过期），直接标记完成

    // TODO: 待 Quickly 凭证更新后恢复自动拼接功能

    this.remixStitchStatus = 'failed';

    this.remixStitchError = '一键成片功能暂不可用（Quickly API 凭证过期），各片段可单独查看/下载';

    this.remixStatusText = `片段生成完成：成功 ${successUrls.length} 个，一键成片暂不可用`;

    video.isRemixing = false;

    video.remixProgress = 100;

    this.isRemixSubmitting = false;



    const firstUrl = successUrls[0];

    this.createRemixVersion(video, this.remixStyle, styleName, firstUrl);

    this.completeRemixTask('completed', firstUrl);

    this.saveRemixSession('completed');

    this.showToast(`✅ AI重塑完成！「${video.title}」共 ${successUrls.length} 个片段`, 'success', 6000);

    console.log(`✅ AI重塑完成（一键成片已跳过）: ${successUrls.length} 个片段`);

  }



  // 结果页点击完成

  finishRemix(): void {

    this.showRemixModal = false;

    this.remixTargetVideo = null;

    this.resetDigitalHumanState();

    this.setCurrentTab('results');

  }



  private createDigitalHumanVersion(video: ManagedVideo, videoUrl: string): void {

    const remixVersion: RemixVersion = {

      id: `REMIX-${Date.now()}`,

      style: '数字人生成',

      created_at: new Date(),

      file_path: videoUrl,

      thumbnail: this.remixDigitalHumanImageAssetUrl || video.thumbnail || 'assets/default-remix-thumb.jpg',

      description: '使用上传形象图与原视频提取音频生成的数字人版本',

      parameters: {

        style: 'digital-human',

        intensity: 1,

        preserve_audio: true,

        quality: this.remixDigitalHumanResolution === '1080p' ? 'high' : 'standard',

        effects: ['digital-human']

      }

    };



    if (!video.remixVersions) {

      video.remixVersions = [];

    }

    video.remixVersions.unshift(remixVersion);



    const durationSeconds = Math.min(Number(video.duration || 0) || 0, 60);

    const estimatedCost = Math.round(durationSeconds * 100) / 100;

    const qualityLabel = this.remixDigitalHumanResolution === '1080p' ? '1080P' : '720P';



    this.saveResult({

      type: 'video',

      url: videoUrl,

      title: `${video.title} - 数字人生成`,

      quality: qualityLabel,

      duration: durationSeconds > 0 ? `${durationSeconds} 秒` : '数字人视频',

      cost: estimatedCost,

      remixId: this.currentRemixId,

      videoId: video.id,

      segments: [{ id: 'DH-01', videoUrl, prompt: this.remixDigitalHumanPrompt, status: 'completed' }]

    });



    this.saveHistoryRecord({

      keyword: `${video.title} - 数字人生成`,

      original_video_title: video.title,

      status: 'completed',

      cost: estimatedCost,

      duration: durationSeconds > 0 ? `${durationSeconds} 秒` : '数字人视频',

      remixId: this.currentRemixId,

      videoId: video.id,

      styleName: '数字人生成',

      resultUrl: videoUrl,

      quality: qualityLabel,

      segmentCount: 1,

      successCount: 1

    });

  }



  // 创建重塑版本 + 持久化结果和历史

  private createRemixVersion(video: ManagedVideo, styleId: string, styleName: string, videoUrl?: string): void {

    const remixVersion: RemixVersion = {

      id: `REMIX-${Date.now()}`,

      style: styleName,

      created_at: new Date(),

      file_path: videoUrl || `remix/${video.filename.replace('.mp4', `-${styleId}.mp4`)}`,

      thumbnail: video.thumbnail || 'assets/default-remix-thumb.jpg',

      description: `使用${styleName}风格重塑的视频版本`,

      parameters: {

        style: styleId,

        intensity: 0.8,

        preserve_audio: true,

        quality: this.remixQuality === 'pro' ? 'ultra' : 'high',

        effects: [styleId, 'enhancement']

      }

    };



    if (!video.remixVersions) {

      video.remixVersions = [];

    }

    video.remixVersions.unshift(remixVersion);



    // 收集所有成功片段数据

    const successSegments = this.remixStoryboard

      .filter(s => s.status === 'completed' && s.videoUrl)

      .map(s => ({ id: s.id, videoUrl: s.videoUrl!, prompt: s.prompt, status: s.status }));



    // 计算费用估算

    const costPerSecond = this.remixQuality === 'pro' ? 1.0 : this.remixQuality === '1080p' ? 0.63 : 0.28;

    const estimatedCost = Math.round(this.remixResults.success * 5 * costPerSecond * 100) / 100;



    // 质量显示

    const qualityLabel = this.remixQuality === 'pro' ? 'Pro 1080P' : this.remixQuality === '1080p' ? '1080P' : '720P';



    // 持久化：保存生成结果（包含所有片段）

    this.saveResult({

      type: 'video',

      url: videoUrl || '',

      title: `${video.title} - ${styleName}风格重塑`,

      quality: qualityLabel,

      duration: `${this.remixResults.success} 个片段`,

      cost: estimatedCost,

      remixId: this.currentRemixId,

      videoId: video.id,

      segments: successSegments

    });



    // 持久化：保存历史记录

    this.saveHistoryRecord({

      keyword: `${video.title} - ${styleName}`,

      original_video_title: video.title,

      status: this.remixResults.success > 0 ? 'completed' : 'failed',

      cost: estimatedCost,

      duration: `${this.remixResults.success}/${this.remixResults.total} 片段`,

      remixId: this.currentRemixId,

      videoId: video.id,

      styleName: styleName,

      resultUrl: videoUrl || successSegments[0]?.videoUrl || '',

      quality: qualityLabel,

      segmentCount: this.remixResults.total,

      successCount: this.remixResults.success

    });



    console.log('重塑版本已创建:', remixVersion);

  }



  // 查看重塑版本

  viewRemixVersions(video: ManagedVideo): void {

    if (!video.remixVersions || video.remixVersions.length === 0) {

      alert('该视频暂无重塑版本');

      return;

    }



    console.log('查看重塑版本:', video.remixVersions);



    let versionsList = `「${video.title}」的重塑版本:\n\n`;

    video.remixVersions.forEach((version, index) => {

      versionsList += `${index + 1}. ${version.style} - ${version.description}\n   创建时间: ${version.created_at.toLocaleString()}\n\n`;

    });



    alert(versionsList);

  }



  // 获取重塑状态文本

  getRemixStatusText(video: ManagedVideo): string {

    if (video.isRemixing && video.remixProgress !== undefined) {

      return `重塑中... ${Math.round(video.remixProgress)}%`;

    }

    return 'AI重塑';

  }



  // 获取重塑状态颜色

  getRemixStatusColor(video: ManagedVideo): string {

    if (video.isRemixing) {

      return 'btn-accent';

    }

    return 'btn-primary';

  }



  // ==================== 语音合成标签页方法 ====================



  setVsTtsMode(mode: 'clone' | 'synthesize'): void {

    this.vsTtsMode = mode;

    this.vsCloneError = '';

    this.vsSynthError = '';

    this.refreshView();

  }



  onVsCloneAudioSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) return;



    const file = input.files[0];

    const allowedExts = ['.mp3', '.wav', '.m4a', '.ogg', '.aac', '.flac', '.wma'];

    const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();

    if (!allowedExts.includes(ext) || file.size <= 0) {

      this.vsCloneError = '仅支持 mp3、wav、m4a、ogg、aac、flac、wma 格式的音频文件';

      input.value = '';

      this.refreshView();

      return;

    }

    if (file.size > 50 * 1024 * 1024) {

      this.vsCloneError = '音频文件不能超过 50MB';

      input.value = '';

      this.refreshView();

      return;

    }



    this.vsCloneAudioFile = file;

    this.vsCloneAudioName = file.name;

    this.vsCloneAudioUrl = '';

    this.vsCloneError = '';

    input.value = '';

    this.refreshView();

  }



  clearVsCloneAudio(): void {

    this.vsCloneAudioFile = null;

    this.vsCloneAudioName = '';

    this.vsCloneAudioUrl = '';

    this.vsCloneError = '';

    this.refreshView();

  }



  private vsUploadCloneAudio(): Promise<string> {

    return new Promise((resolve, reject) => {

      if (!this.vsCloneAudioFile) {

        reject(new Error('未选择音频文件'));

        return;

      }

      if (this.vsCloneAudioUrl) {

        resolve(this.vsCloneAudioUrl);

        return;

      }



      this.vsCloneUploading = true;

      this.refreshView();



      const filename = `voice-clone-${Date.now()}-${this.vsCloneAudioFile.name}`;

      this.qiniuUpload.uploadFile(this.vsCloneAudioFile, filename, this.vsCloneAudioFile.type, 'audio').subscribe({

        next: (url) => {

          this.vsCloneUploading = false;

          if (!url) {

            reject(new Error('上传音频失败，未返回可用 URL'));

            return;

          }

          this.vsCloneAudioUrl = url;

          this.refreshView();

          resolve(url);

        },

        error: (err) => {

          this.vsCloneUploading = false;

          this.refreshView();

          reject(new Error(this.getErrorText(err, '音频上传失败')));

        }

      });

    });

  }



  vsStartClone(): void {

    if (this.vsCloneLoading || this.vsCloneUploading) return;



    const { name, audioText, language, demoText } = this.vsCloneForm;

    if (!name.trim()) {

      this.vsCloneError = '请输入音色名称';

      this.refreshView();

      return;

    }

    if (!this.vsCloneAudioFile) {

      this.vsCloneError = '请先上传音频文件';

      this.refreshView();

      return;

    }

    if (!demoText.trim() || demoText.trim().length < 4 || demoText.trim().length > 80) {

      this.vsCloneError = '试听文本长度需在 4-80 字之间';

      this.refreshView();

      return;

    }



    this.vsCloneLoading = true;

    this.vsCloneError = '';

    this.vsCloneResult = null;

    this.refreshView();



    this.vsUploadCloneAudio().then((audioUrl) => {

      // 自动从后端挑选一个未训练的 speaker_id

      this.http.post<any>('/backend/api/voice/auto-speaker-id', {}).subscribe({

        next: (idRes) => {

          const pickedSpeakerId = String(idRes?.speaker_id || '').trim();

          if (!pickedSpeakerId) {

            this.vsCloneLoading = false;

            this.vsCloneError = idRes?.error || '未能获取可用的 speaker_id';

            this.showToast(`❌ ${this.vsCloneError}`, 'error');

            this.refreshView();

            return;

          }

          this.showToast(`🎯 已自动分配 speaker_id：${pickedSpeakerId}`, 'info', 3000);

          this.http.post<any>('https://server.fmode.cn/api/volcengine/tts/voice_clone', {

            token: 'Bearer r:f0333969e312a40e4703e8fe4ed1c600',

            name: name.trim(),

            speaker_id: pickedSpeakerId,

            audioData: {

              url: audioUrl,

              ...(audioText.trim() ? { text: audioText.trim() } : {})

            },

            language: language,

            extra_params: {

              demo_text: demoText.trim()

            }

          }).subscribe({

            next: (res) => {

              this.vsCloneLoading = false;

              this.vsCloneResult = res;

              if (res?.code === 200 && res?.data?.timbre) {

                const timbre = res.data.timbre;

                const newEntry = {
                  objectId: timbre.objectId,
                  name: timbre.name || name.trim(),
                  speakerId: timbre.speaker_id || pickedSpeakerId
                };
                const existingIndex = this.vsClonedTimbreList.findIndex(t => t.objectId === timbre.objectId);
                if (existingIndex >= 0) {
                  // 同一 speaker_id 复刻会返回相同 objectId：更新现有条目（含名称）并置顶
                  const next = [...this.vsClonedTimbreList];
                  next.splice(existingIndex, 1);
                  next.unshift({ ...this.vsClonedTimbreList[existingIndex], ...newEntry });
                  this.vsClonedTimbreList = next;
                } else {
                  this.vsClonedTimbreList = [newEntry, ...this.vsClonedTimbreList];
                }
                this.saveClonedTimbreList();

                // 同步到本地后端，让 /api/voice/auto-speaker-id 后续能跳过此 speaker_id
                const modelInfo = (Array.isArray(timbre.models) && timbre.models[0]) || {};
                this.http.post('/backend/api/voice-profiles/sync', {
                  id: timbre.objectId,
                  timbre_id: timbre.objectId,
                  name: timbre.name || name.trim(),
                  speaker_id: timbre.speaker_id || pickedSpeakerId,
                  demo_audio: modelInfo.demo_audio || '',
                  latest_audio_url: modelInfo.demo_audio || '',
                  x_api_resource_id: modelInfo.x_api_resource_id || '',
                  icl_speaker_id: modelInfo.icl_speaker_id || '',
                  model_version: modelInfo.version || '',
                  status: timbre.status ?? null,
                  status_label: res?.data?.tip || '',
                  message: res?.data?.tip || '',
                  created_at: timbre.createdAt || undefined
                }).subscribe({
                  next: () => {},
                  error: (e) => console.warn('voice-profiles/sync failed', e)
                });

                if (!this.vsSynthForm.timbreId) {

                  this.vsSynthForm.timbreId = timbre.objectId;

                }

                this.showToast(`✅ 音色「${timbre.name}」复刻成功`, 'success');

              } else {

                this.vsCloneError = res?.error?.message || '复刻失败，请检查参数';

                this.showToast(`❌ ${this.vsCloneError}`, 'error');

              }

              this.refreshView();

            },

            error: (err) => {

              this.vsCloneLoading = false;

              this.vsCloneError = this.getErrorText(err, '音色复刻请求失败');

              this.showToast(`❌ ${this.vsCloneError}`, 'error');

              this.refreshView();

            }

          });

        },

        error: (err) => {

          this.vsCloneLoading = false;

          const errBody = err?.error;

          this.vsCloneError = errBody?.error || this.getErrorText(err, '获取可用 speaker_id 失败');

          this.showToast(`❌ ${this.vsCloneError}`, 'error');

          this.refreshView();

        }

      });

    }).catch((uploadErr) => {

      this.vsCloneLoading = false;

      this.vsCloneError = uploadErr?.message || '音频上传失败';

      this.showToast(`❌ ${this.vsCloneError}`, 'error');

      this.refreshView();

    });

  }



  vsStartSynthesize(): void {

    if (this.vsSynthLoading) return;



    const { timbreId, voiceType, voiceSource, text, format, sampleRate, speechRate, loudnessRate } = this.vsSynthForm;

    const usingOfficial = voiceSource === 'official';
    const voiceId = usingOfficial ? (voiceType || '').trim() : (timbreId || '').trim();

    if (!voiceId) {

      this.vsSynthError = '请先选择声音模型';

      this.refreshView();

      return;

    }

    if (!text.trim()) {

      this.vsSynthError = '请输入要合成的文本内容';

      this.refreshView();

      return;

    }



    this.vsSynthLoading = true;

    this.vsSynthError = '';

    this.vsSynthAudioUrl = '';

    this.vsSynthWorkId = '';

    this.refreshView();



    const body: any = {
      token: 'Bearer r:f0333969e312a40e4703e8fe4ed1c600',
      text: text.trim(),
      isStream: false,
      audio_params: {
        format: format || 'mp3',
        sample_rate: sampleRate || 24000,
        speech_rate: speechRate || 0,
        loudness_rate: loudnessRate || 0
      }
    };
    if (usingOfficial) {
      // _uranus_bigtts 后缀对应豆包语音合成模型 2.0，需要 seed-tts-2.0 资源；
      // 其它后缀回退到 seed-tts-1.0，可按需扩展。
      body.volcengine_voice_type = voiceId;
      body.x_api_resource_id = this.getOfficialTtsResourceId(voiceId);
    } else {
      body.timbreId = voiceId;
    }

    this.http.post<any>('https://server.fmode.cn/api/volcengine/tts/unidirectional', body).subscribe({

      next: (res) => {

        this.vsSynthLoading = false;

        if (res?.code === 200 && res?.data?.audioUrl) {

          this.vsSynthAudioUrl = res.data.audioUrl;

          this.vsSynthWorkId = res.data.workId || '';

          this.showToast('✅ 语音合成成功', 'success');

        } else {

          this.vsSynthError = res?.error?.message || '合成失败，请检查参数';

          this.showToast(`❌ ${this.vsSynthError}`, 'error');

        }

        this.refreshView();

      },

      error: (err) => {

        this.vsSynthLoading = false;

        this.vsSynthError = this.getErrorText(err, '语音合成请求失败');

        this.showToast(`❌ ${this.vsSynthError}`, 'error');

        this.refreshView();

      }

    });

  }



  vsSelectClonedTimbre(objectId: string): void {

    this.vsSynthForm.timbreId = objectId;

    this.vsSynthForm.voiceSource = 'cloned';
    this.vsSynthForm.voiceType = '';
    const matched = this.vsClonedTimbreList.find(t => t.objectId === objectId);
    this.vsSynthForm.voiceName = matched?.name || objectId;

    this.vsTtsMode = 'synthesize';

    this.vsSynthError = '';

    this.refreshView();

  }



  // ==================== 数字人合成独立页面 ====================



  onDhImageSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) return;

    const file = input.files[0];

    const allowedExts = ['.jpg', '.jpeg', '.png', '.gif'];

    const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();

    if (!allowedExts.includes(ext)) {

      this.dhError = '仅支持 jpg、jpeg、png、gif 格式的形象图';

      input.value = '';

      this.refreshView();

      return;

    }

    if (file.size > 20 * 1024 * 1024) {

      this.dhError = '形象图大小不能超过 20MB';

      input.value = '';

      this.refreshView();

      return;

    }

    this.dhRevokeImagePreview();

    this.dhImageFile = file;

    this.dhImageName = file.name;

    this.dhImagePreviewUrl = URL.createObjectURL(file);

    this.dhImageAssetUrl = '';

    this.dhError = '';

    input.value = '';

    this.refreshView();

  }



  clearDhImage(): void {

    this.dhRevokeImagePreview();

    this.dhImageFile = null;

    this.dhImageName = '';

    this.dhImageAssetUrl = '';

    this.dhError = '';

    this.dhPreparedPortraitUrl = '';

    this.dhPreparedFullBodyUrl = '';

    this.dhPreparedBenchmarkSummary = '';

    this.refreshView();

  }



  /** dh tab：<app-portrait-prepare> 的 (prepared) 事件回调 */

  onDhPortraitPrepared(out: PortraitPrepareOutput): void {

    this.dhPreparedPortraitUrl = out.portraitUrl;

    this.dhPreparedFullBodyUrl = out.fullBodyUrl;

    this.dhPreparedBenchmarkSummary = out.benchmarkSummary;

    this.refreshView();

  }



  private dhRevokeImagePreview(): void {

    if (this.dhImagePreviewUrl) {

      URL.revokeObjectURL(this.dhImagePreviewUrl);

      this.dhImagePreviewUrl = '';

    }

  }



  onDhAudioSelected(event: Event): void {

    const input = event.target as HTMLInputElement;

    if (!input.files || input.files.length === 0) return;

    const file = input.files[0];

    const allowedExts = ['.mp3', '.wav', '.m4a', '.ogg', '.aac', '.flac', '.wma'];

    const ext = file.name.substring(file.name.lastIndexOf('.')).toLowerCase();

    if (!allowedExts.includes(ext)) {

      this.dhError = '仅支持 MP3、WAV、M4A、OGG、AAC、FLAC、WMA 格式的音频';

      input.value = '';

      this.refreshView();

      return;

    }

    if (file.size > 50 * 1024 * 1024) {

      this.dhError = '音频文件大小不能超过 50MB';

      input.value = '';

      this.refreshView();

      return;

    }

    this.dhUploadAudioFile = file;

    this.dhUploadAudioName = file.name;

    this.dhUploadAudioUrl = '';

    this.dhError = '';

    input.value = '';

    this.refreshView();

  }



  clearDhAudio(): void {

    this.dhUploadAudioFile = null;

    this.dhUploadAudioName = '';

    this.dhUploadAudioUrl = '';

    this.dhError = '';

    this.refreshView();

  }



  dhReset(): void {

    this.dhRevokeImagePreview();

    this.dhStep = 'form';

    this.dhImageFile = null;

    this.dhImageName = '';

    this.dhImageAssetUrl = '';

    this.dhAudioSource = 'tts';

    this.dhTtsTimbreId = '';
    this.dhTtsVoiceSource = 'cloned';
    this.dhTtsVoiceType = '';
    this.dhTtsVoiceName = '';

    this.dhTtsText = '';

    this.dhUploadAudioFile = null;

    this.dhUploadAudioName = '';

    this.dhUploadAudioUrl = '';

    this.dhUploadingAudio = false;

    this.dhPrompt = '';

    this.dhFastMode = false;

    this.dhResolution = '1080p';

    this.dhError = '';

    this.dhLoading = false;

    this.dhStatusText = '';

    this.dhProgress = 0;

    this.dhResultVideoUrl = '';

    this.dhSynthesizing = false;

    this.refreshView();

  }



  // 数字人形象库：从生成结果中筛选数字人作品

  getDigitalHumanResults(): GeneratedResult[] {

    return (this.generatedResults || []).filter(r => {

      const title = String(r?.title || '');

      return title.includes('数字人合成') || title.includes('数字人');

    });

  }

  private toDigitalHumanSnapshot(): Record<string, any> {
    return {
      imageName: this.dhImageName,
      imageUrl: this.dhImageAssetUrl || this.dhPreparedPortraitUrl || '',
      preparedPortraitUrl: this.dhPreparedPortraitUrl,
      preparedFullBodyUrl: this.dhPreparedFullBodyUrl,
      preparedBenchmarkSummary: this.dhPreparedBenchmarkSummary,
      audioSource: this.dhAudioSource,
      ttsTimbreId: this.dhTtsTimbreId,
      ttsVoiceSource: this.dhTtsVoiceSource,
      ttsVoiceType: this.dhTtsVoiceType,
      ttsVoiceName: this.dhTtsVoiceName,
      ttsText: this.dhTtsText,
      uploadAudioName: this.dhUploadAudioName,
      uploadAudioUrl: this.dhUploadAudioUrl,
      prompt: this.dhPrompt,
      fastMode: this.dhFastMode,
      resolution: this.dhResolution,
      step: this.dhStep,
      progress: this.dhProgress,
      statusText: this.dhStatusText,
      resultVideoUrl: this.dhResultVideoUrl,
    };
  }

  private deriveDigitalHumanDraftTitle(): string {
    const script = (this.dhTtsText || '').replace(/\s+/g, ' ').trim();
    if (script) return `数字人合成 · ${script.slice(0, 24)}`;
    if (this.dhImageName) return `数字人合成 · ${this.dhImageName}`;
    return `数字人合成 · ${new Date().toLocaleString('zh-CN')}`;
  }

  private syncDigitalHumanDraft(status: 'draft' | 'running' = 'draft'): void {
    const title = this.deriveDigitalHumanDraftTitle();
    this.pipelineSession.ensureActive('digital-human', () => this.toDigitalHumanSnapshot(), title);
    this.pipelineSession.patch({
      title,
      snapshot: this.toDigitalHumanSnapshot(),
      thumbnail: this.dhImageAssetUrl || this.dhPreparedPortraitUrl || undefined,
    });
    if (status === 'running') this.pipelineSession.markRunning();
  }

  private completeDigitalHumanDraft(videoUrl: string, imageUrl?: string, audioUrl?: string): void {
    this.syncDigitalHumanDraft('running');

    if (imageUrl) {
      this.pipelineSession.upsertArtifact(
        (a) => a.type === 'image' && a.title === '数字人形象图',
        {
          type: 'image',
          url: imageUrl,
          title: '数字人形象图',
          extras: { imageName: this.dhImageName },
        },
      );
    }

    if (audioUrl) {
      this.pipelineSession.upsertArtifact(
        (a) => a.type === 'audio' && a.title === '数字人口播音频',
        {
          type: 'audio',
          url: audioUrl,
          title: '数字人口播音频',
          extras: {
            source: this.dhAudioSource,
            voiceSource: this.dhAudioSource === 'tts' ? this.dhTtsVoiceSource : undefined,
            voiceType: this.dhAudioSource === 'tts' ? this.dhTtsVoiceType : undefined,
            voiceName: this.dhAudioSource === 'tts' ? this.dhTtsVoiceName : undefined,
            timbreId: this.dhAudioSource === 'tts' ? this.dhTtsTimbreId : undefined,
            audioName: this.dhUploadAudioName,
          },
        },
      );
    }

    this.pipelineSession.patch({
      title: this.deriveDigitalHumanDraftTitle(),
      snapshot: this.toDigitalHumanSnapshot(),
      thumbnail: imageUrl || this.dhImageAssetUrl || this.dhPreparedPortraitUrl || undefined,
    });

    this.pipelineSession.finalize(videoUrl, {
      prompt: this.dhPrompt,
      resolution: this.dhResolution,
      audioSource: this.dhAudioSource,
      ttsVoiceSource: this.dhAudioSource === 'tts' ? this.dhTtsVoiceSource : undefined,
      ttsVoiceType: this.dhAudioSource === 'tts' ? this.dhTtsVoiceType : undefined,
      ttsVoiceName: this.dhAudioSource === 'tts' ? this.dhTtsVoiceName : undefined,
      ttsTimbreId: this.dhAudioSource === 'tts' ? this.dhTtsTimbreId : undefined,
    });
  }



  // ========================================================================

  //  数字人合成页：AI 对话助手 —— 让用户用自然语言要求 AI 改写口播稿 / 优化提示词

  // ========================================================================



  /** 发送一条对话给 AI，AI 基于当前 dhTtsText / dhPrompt 给出修改建议 */

  dhChatSend(): void {

    const userMsg = (this.dhChatInput || '').trim();

    if (!userMsg || this.dhChatLoading) return;



    this.dhChatMessages.push({ role: 'user', content: userMsg });

    this.dhChatInput = '';

    this.dhChatLoading = true;

    this.dhChatError = '';

    this.refreshView();



    const systemPrompt = `你是一位短视频数字人口播脚本编辑助手。你需要根据用户的自然语言指令，在不偏离原意的前提下改写「口播文本」或「补充提示词」。

【当前口播文本】

${this.dhTtsText || '（空）'}

【当前补充提示词】

${this.dhPrompt || '（空）'}

【输出格式】请只输出严格 JSON：

{

  "explanation": "用一两句话向用户解释你做了什么修改（≤40字）",

  "ttsScript": "新的口播文本；若用户本轮指令不需要改写口播，请返回空字符串",

  "dhPrompt": "新的补充提示词；若用户本轮指令不需要改写提示词，请返回空字符串"

}

要求：

- 字符串内不得出现真实换行，必须用 \\n 转义。

- 口播文本控制在 200 字以内，第一人称、自然口语。

- 补充提示词控制在 80 字以内，描述动作 / 镜头语言 / 风格。

- 只返回纯 JSON，禁止 markdown 代码块、禁止前后缀。`;



    // 把最近若干轮历史拼成一段上下文，避免 token 爆炸

    const history = this.dhChatMessages

      .slice(-8, -1) // 不含本次刚 push 的用户消息

      .map(m => `${m.role === 'user' ? '用户' : 'AI'}: ${m.content}`)

      .join('\n');

    const userInput = (history ? `【历史对话】\n${history}\n\n` : '') + `【本轮用户指令】\n${userMsg}`;



    console.log('🗣️ [dhChatSend] 发送对话:', { userMsg, ttsLen: this.dhTtsText.length, promptLen: this.dhPrompt.length });

    this.llmService.askWithSystem(systemPrompt, userInput, { model: 'gemini-2.5-flash', max_tokens: 2048 })

      .pipe(

        timeout(60000),

        // ★ finalize 保证不论 next/error/throw/cancel，都强制解锁按钮并刷新视图

        finalize(() => {

          this.dhChatLoading = false;

          this.refreshView();

        })

      )

      .subscribe({

      next: (text) => {

        console.log('🗣️ [dhChatSend] 收到回复，长度:', (text || '').length);

        const cleaned = (text || '').replace(/^\s*```(?:json)?\s*/i, '').replace(/\s*```\s*$/i, '').trim();

        const parsed: any = this.parseRewriteJson(cleaned);

        if (parsed) {

          const explanation = typeof parsed.explanation === 'string' ? parsed.explanation.trim() : '';

          const tts = typeof parsed.ttsScript === 'string' ? parsed.ttsScript.trim() : '';

          const prompt = typeof parsed.dhPrompt === 'string' ? parsed.dhPrompt.trim() : '';

          this.dhChatMessages.push({

            role: 'assistant',

            content: explanation || (tts || prompt ? '已为你生成修改建议，可点击下方按钮应用' : '我没有给出修改'),

            suggestedTts: tts || undefined,

            suggestedPrompt: prompt || undefined,

          });

        } else {

          // 兜底：把原文当作 assistant 文本呈现，不自动应用

          this.dhChatMessages.push({ role: 'assistant', content: cleaned || '（AI 无返回）' });

        }

        this.refreshView();

      },

      error: (err) => {

        console.error('🗣️ [dhChatSend] 请求失败:', err);

        this.dhChatLoading = false;

        // 优先抽取上游具体错误（fmode 网关返回的 "无效的令牌..." 等）

        const upstream = err?.error?.error?.message || err?.error?.message || err?.error?.error || err?.error || '';

        const msg = (typeof upstream === 'string' && upstream) || err?.message || 'AI 对话请求失败';

        this.dhChatError = msg;

        this.dhChatMessages.push({ role: 'assistant', content: `⚠️ ${msg}` });

        this.refreshView();

      }

    });

  }



  /** 应用 AI 建议到对应字段；field 控制只应用一项还是两项一起 */

  dhChatApply(msgIndex: number, field: 'tts' | 'prompt' | 'both'): void {

    const msg = this.dhChatMessages[msgIndex];

    if (!msg || msg.role !== 'assistant') return;



    if ((field === 'tts' || field === 'both') && msg.suggestedTts) {

      this.dhTtsText = msg.suggestedTts.slice(0, 600);

      msg.appliedTts = true;

    }

    if ((field === 'prompt' || field === 'both') && msg.suggestedPrompt) {

      this.dhPrompt = msg.suggestedPrompt.slice(0, 200);

      msg.appliedPrompt = true;

    }

    this.showToast('✅ 已应用 AI 建议', 'success', 2000);

    this.refreshView();

  }



  /** 清空对话历史 */

  dhChatClear(): void {

    this.dhChatMessages = [];

    this.dhChatError = '';

    this.dhChatInput = '';

    this.refreshView();

  }



  /** 快捷指令：一键发送预设的改写诉求 */

  dhChatQuickAsk(preset: string): void {

    if (this.dhChatLoading) return;

    this.dhChatInput = preset;

    this.dhChatSend();

  }



  /** 刷新数字人形象库（重新拉取生成结果） */

  refreshDigitalHumanGallery(): void {

    this.http.get<any[]>('/backend/api/results').subscribe({

      next: (results) => {

        this.generatedResults = (results || []).map(r => ({ ...r, created_at: new Date(r.created_at) }));

        this.showToast('🔄 形象库已刷新', 'success', 2500);

        this.refreshView();

      },

      error: () => {

        this.showToast('❌ 刷新失败，请稍后重试', 'error');

      }

    });

  }



  dhStartGeneration(): void {

    if (this.dhLoading) return;



    // 验证形象图

    if (!this.dhImageFile) {

      this.dhError = '请先上传数字人形象图';

      this.refreshView();

      return;

    }



    // 验证音频来源

    if (this.dhAudioSource === 'tts') {

      if (!this.dhCurrentVoiceSelection) {

        this.dhError = '请先选择声音模型';

        this.refreshView();

        return;

      }

      if (!this.dhTtsText.trim()) {

        this.dhError = '请输入口播文本';

        this.refreshView();

        return;

      }

    } else {

      if (!this.dhUploadAudioFile) {

        this.dhError = '请上传音频文件';

        this.refreshView();

        return;

      }

    }



    this.dhError = '';

    this.dhLoading = true;

    this.dhStep = 'generating';

    this.dhProgress = 0;

    this.dhStatusText = '正在准备数字人素材...';

    this.dhResultVideoUrl = '';

    this.syncDigitalHumanDraft('running');

    this.refreshView();



    // 通过 DigitalHumanService 串联：上传图 → tts/upload 音频 → identify → generate

    // 若已通过 <app-portrait-prepare> 生成对标/规范化形象图，则直接复用其 URL

    const req: DigitalHumanRequest = {

      portrait: this.dhPreparedPortraitUrl

        ? { imageUrl: this.dhPreparedPortraitUrl }

        : { imageFile: this.dhImageFile! },

      audio: this.dhAudioSource === 'tts'

        ? {
          source: 'tts',
          ttsText: this.dhTtsText.trim(),
          ttsTimbreId: this.dhTtsTimbreId.trim(),
          ttsVoiceSource: this.dhTtsVoiceSource,
          ttsVoiceType: this.dhTtsVoiceType.trim(),
        }

        : { source: 'upload', audioFile: this.dhUploadAudioFile! },

      prompt: this.dhPrompt || '',

      fastMode: this.dhFastMode,

      resolution: this.dhResolution

    };



    this.digitalHumanService.generate(req).subscribe({

      next: (evt: DigitalHumanEvent) => {

        this.ngZone.run(() => {

          if (evt.type === 'progress') {

            this.dhProgress = evt.progress;

            this.dhStatusText = evt.status;

            // 同步老的子状态，让 checklist UI 仍能显示阶段

            if (evt.stage === 'prepare-audio') {

              this.dhSynthesizing = this.dhAudioSource === 'tts';

              this.dhUploadingAudio = this.dhAudioSource === 'upload';

            } else {

              this.dhSynthesizing = false;

              this.dhUploadingAudio = false;

            }

            this.refreshView();

          } else {

            // result

            this.dhProgress = 100;

            this.dhResultVideoUrl = evt.videoUrl;

            this.dhImageAssetUrl = evt.imageUrl;

            this.dhUploadAudioUrl = evt.audioUrl;

            this.dhStatusText = '数字人视频生成完成！';

            this.dhLoading = false;

            this.dhStep = 'done';

            this.dhSynthesizing = false;

            this.dhUploadingAudio = false;

            this.completeDigitalHumanDraft(evt.videoUrl, evt.imageUrl, evt.audioUrl);

            this.showToast('✅ 数字人视频已生成', 'success', 6000);



            // 保存到结果

            this.saveResult({

              type: 'video',

              url: evt.videoUrl,

              title: `数字人合成 - ${new Date().toLocaleString('zh-CN')}`,

              quality: this.dhResolution === '1080p' ? '1080P' : '720P',

              duration: '数字人视频',

              cost: 0,

              segments: [{ id: 'DH-01', videoUrl: evt.videoUrl, prompt: this.dhPrompt, status: 'completed' }]

            });



            this.saveHistoryRecord({

              keyword: '数字人合成',

              status: 'completed',

              cost: 0,

              duration: '数字人视频',

              styleName: '数字人合成',

              resultUrl: evt.videoUrl,

              quality: this.dhResolution === '1080p' ? '1080P' : '720P',

              segmentCount: 1,

              successCount: 1

            });



            this.addDhVideoToManifest(evt.videoUrl);

            this.refreshView();

          }

        });

      },

      error: (err: any) => {

        this.ngZone.run(() => {

          this.dhHandleError(this.getErrorText(err, '数字人视频生成失败'));

        });

      }

    });

  }



  /** @deprecated 旧的同名方法已合并到 dhStartGeneration，保留以避免破坏现有调用。 */

  private _legacyDhUploadFlow(): void {

    if (!this.dhImageFile) return;

    this.jimengService.uploadFileToParse(

      this.dhImageFile,

      `digital-human-${Date.now()}-${this.dhImageFile.name}`,

      this.dhImageFile.type || 'image/jpeg'

    ).subscribe({

      next: (imageUrl: string) => {

        this.dhImageAssetUrl = imageUrl;

        this.dhProgress = 10;

        this.refreshView();



        if (this.dhAudioSource === 'tts') {

          this.dhStatusText = '形象图上传完成，正在合成语音...';

          this.dhSynthesizing = true;

          this.refreshView();



          this.http.post<any>('https://server.fmode.cn/api/volcengine/tts/unidirectional', {

            token: this.voiceApiToken,

            text: this.dhTtsText.trim(),

            timbreId: this.dhTtsTimbreId.trim(),

            isStream: false,

            audio_params: {

              format: 'mp3',

              sample_rate: 24000,

              speech_rate: 0,

              loudness_rate: 0

            }

          }).subscribe({

            next: (res) => {

              this.dhSynthesizing = false;

              if (res?.code === 200 && res?.data?.audioUrl) {

                this.dhProgress = 25;

                this.dhStatusText = '语音合成完成，正在识别数字人主体...';

                this.refreshView();

                this.dhGenerateWithAudio(imageUrl, res.data.audioUrl);

              } else {

                this.dhHandleError(res?.error?.message || '语音合成失败，请检查音色ID和文本');

              }

            },

            error: (err) => {

              this.dhSynthesizing = false;

              this.dhHandleError(this.getErrorText(err, '语音合成请求失败'));

            }

          });

        } else {

          // 上传音频文件

          this.dhStatusText = '形象图上传完成，正在上传音频文件...';

          this.dhUploadingAudio = true;

          this.refreshView();



          const audioFile = this.dhUploadAudioFile!;

          this.jimengService.uploadFileToParse(

            audioFile,

            `dh-audio-${Date.now()}-${audioFile.name}`,

            audioFile.type || 'audio/mpeg'

          ).subscribe({

            next: (audioUrl: string) => {

              this.dhUploadingAudio = false;

              this.dhUploadAudioUrl = audioUrl;

              this.dhProgress = 25;

              this.dhStatusText = '音频上传完成，正在识别数字人主体...';

              this.refreshView();

              this.dhGenerateWithAudio(imageUrl, audioUrl);

            },

            error: (err) => {

              this.dhUploadingAudio = false;

              this.dhHandleError(err?.message || '上传音频文件失败');

            }

          });

        }

      },

      error: (err) => {

        this.dhHandleError(err?.message || '上传形象图失败');

      }

    });

  }



  private dhGenerateWithAudio(imageUrl: string, audioUrl: string): void {

    console.log('🤖 数字人生成 - imageUrl:', imageUrl, 'audioUrl:', audioUrl);

    this.jimengService.identifyDigitalHuman(imageUrl).subscribe({

      next: ({ workId }) => {

        this.jimengService.pollDigitalHumanIdentifyUntilReady(workId, (status, progress) => {

          this.dhProgress = Math.min(25 + progress * 0.25, 50);

          this.dhStatusText = status;

          this.refreshView();

        }).subscribe({

          next: () => {

            this.dhStatusText = '主体识别完成，开始生成数字人视频...';

            this.dhProgress = 50;

            this.refreshView();



            this.jimengService.generateDigitalHuman(workId, audioUrl, {

              prompt: this.dhPrompt,

              peFastMode: this.dhResolution === '720p' ? true : this.dhFastMode,

              outputResolution: this.dhResolution,

              maskUrl: []

            }, (status, progress) => {

              this.dhProgress = Math.min(50 + progress * 0.45, 95);

              this.dhStatusText = status;

              this.refreshView();

            }).subscribe({

              next: (result) => {

                this.dhProgress = 100;

                this.dhResultVideoUrl = result.videoUrl;

                this.dhStatusText = '数字人视频生成完成！';

                this.dhLoading = false;

                this.dhStep = 'done';

                this.completeDigitalHumanDraft(result.videoUrl, this.dhImageAssetUrl || undefined, this.dhUploadAudioUrl || undefined);

                this.showToast('✅ 数字人视频已生成', 'success', 6000);



                // 保存到结果

                this.saveResult({

                  type: 'video',

                  url: result.videoUrl,

                  title: `数字人合成 - ${new Date().toLocaleString('zh-CN')}`,

                  quality: this.dhResolution === '1080p' ? '1080P' : '720P',

                  duration: '数字人视频',

                  cost: 0,

                  segments: [{ id: 'DH-01', videoUrl: result.videoUrl, prompt: this.dhPrompt, status: 'completed' }]

                });



                this.saveHistoryRecord({

                  keyword: '数字人合成',

                  status: 'completed',

                  cost: 0,

                  duration: '数字人视频',

                  styleName: '数字人合成',

                  resultUrl: result.videoUrl,

                  quality: this.dhResolution === '1080p' ? '1080P' : '720P',

                  segmentCount: 1,

                  successCount: 1

                });



                // 同步到视频管理

                this.addDhVideoToManifest(result.videoUrl);



                this.refreshView();

              },

              error: (err) => this.dhHandleError(typeof err === 'string' ? err : err?.message || err?.error?.message || '数字人视频生成失败')

            });

          },

          error: (err) => this.dhHandleError(typeof err === 'string' ? err : err?.message || err?.error?.message || '数字人主体识别失败')

        });

      },

      error: (err) => this.dhHandleError(typeof err === 'string' ? err : err?.message || err?.error?.message || '提交数字人主体识别失败')

    });

  }



  private dhHandleError(message: string): void {

    this.dhLoading = false;

    this.dhSynthesizing = false;

    this.dhUploadingAudio = false;

    this.dhProgress = 0;

    this.dhStep = 'done';

    this.dhStatusText = message;

    this.dhError = message;

    if (this.pipelineSession.active()?.pipelineId === 'digital-human') {
      this.pipelineSession.fail(message);
    }

    this.showToast(`❌ ${message}`, 'error');

    this.refreshView();

  }



  // ==================== 视频生成工作流 ====================



  vgReset(): void {

    this.vgStep = 1;

    this.vgSourceFile = null;

    this.vgSourceFileName = '';

    this.vgSourceVideoUrl = '';

    this.vgUploading = false;

    this.vgUploadProgress = 0;

    this.vgVideoId = '';

    this.vgAnalyzing = false;

    this.vgAnalysisText = '';

    this.vgTranscript = '';

    this.vgGeneratingScript = false;

    this.vgScript = '';

    this.vgScriptSegments = [];

    this.vgGeneratingImages = false;

    this.vgImageResults = [];

    this.vgImageProgress = 0;

    this.vgVoiceMode = 'system';

    this.vgVoiceTimbreId = '';
    this.vgVoiceName = '';

    this.vgSynthesizing = false;

    this.vgAudioUrls = [];

    this.vgCompositing = false;

    this.vgCompositingProgress = 0;

    this.vgFinalVideoUrl = '';

    this.vgError = '';

    this.vgTaskId = '';

  }



  // 视频生成：创建任务（上传成功后调用）

  private vgCreateTask(): void {

    const tempId = `VG-${Date.now()}`;

    const task: Task = {

      id: tempId,

      keyword: this.vgSourceFileName || '视频生成',

      status: 'processing',

      step: 'vg-upload',

      progress: 10,

      cost: 0,

      created_at: new Date(),

      updated_at: new Date(),

      original_video_title: this.vgSourceFileName,

      type: 'video-generation',

      vgData: this.vgBuildSnapshot()

    };

    this.vgTaskId = tempId;

    this.activeTasks.unshift(task);

    // saveTask POST 后端会返回真实 id，回填后同步 vgTaskId

    this.taskSaveReady = new Promise<void>((resolve) => {

      this.http.post<any>('/backend/api/tasks', task).subscribe({

        next: (res) => {

          if (res?.task?.id) {

            task.id = res.task.id;

            this.vgTaskId = res.task.id;

          }

          this.updateTaskStats();

          console.log('💾 视频生成任务已保存:', task.id);

          resolve();

        },

        error: (err) => {

          console.warn('⚠️ 任务保存失败:', err);

          resolve();

        }

      });

    });

    this.updateTaskStats();

    this.showToast('任务已创建，可在「任务管理」中查看和恢复进度', 'success');

  }



  // 视频生成：更新任务进度（每个步骤转换时调用）

  private vgUpdateTaskProgress(step: Task['step'], progress: number, status: Task['status'] = 'processing'): void {

    const task = this.activeTasks.find(t => t.id === this.vgTaskId || (t.type === 'video-generation' && t.vgData?.videoId === this.vgVideoId));

    if (!task) return;

    // 若任务已被用户取消，则不再覆盖回 processing 状态

    if (task.id && this.canceledTaskIds.has(task.id)) {

      return;

    }

    this.vgTaskId = task.id;

    task.step = step;

    task.progress = progress;

    task.status = status;

    task.updated_at = new Date();

    task.error_message = status === 'failed' ? this.vgError : undefined;

    task.vgData = this.vgBuildSnapshot();

    if (status === 'completed' && this.vgFinalVideoUrl) {

      task.result_url = this.vgFinalVideoUrl;

    }

    this.updateTask(task);

    this.updateTaskStats();

  }



  // 视频生成：构建当前状态快照

  private vgBuildSnapshot(): Task['vgData'] {

    return {

      videoId: this.vgVideoId,

      sourceFileName: this.vgSourceFileName,

      sourceVideoUrl: this.vgSourceVideoUrl,

      step: this.vgStep,

      transcript: this.vgTranscript,

      analysisText: this.vgAnalysisText,

      script: this.vgScript,

      scriptSegments: this.vgScriptSegments,

      imageResults: this.vgImageResults,

      audioUrls: this.vgAudioUrls,

      voiceMode: this.vgVoiceMode,

      voiceSpeakerId: this.vgVoiceSpeakerId,

      voiceTimbreId: this.vgVoiceTimbreId,
      voiceName: this.vgVoiceName,

      finalVideoUrl: this.vgFinalVideoUrl

    };

  }



  // 视频生成：从任务恢复状态

  vgResumeFromTask(task: Task): void {

    if (!task.vgData) {

      this.showToast('该任务没有可恢复的数据', 'warn');

      return;

    }

    const d = task.vgData;

    this.vgTaskId = task.id;

    this.vgVideoId = d.videoId;

    this.vgSourceFileName = d.sourceFileName;

    this.vgSourceVideoUrl = d.sourceVideoUrl;

    this.vgSourceFile = null; // File 对象无法持久化

    this.vgStep = d.step;

    this.vgTranscript = d.transcript;

    this.vgAnalysisText = d.analysisText;

    this.vgScript = d.script;

    this.vgScriptSegments = d.scriptSegments || [];

    this.vgImageResults = d.imageResults || [];

    this.vgAudioUrls = d.audioUrls || [];

    this.vgVoiceMode = d.voiceMode || 'system';

    this.vgVoiceSpeakerId = d.voiceSpeakerId || 'zh_female_shuangkuai-am_16k';

    this.vgVoiceTimbreId = d.voiceTimbreId || '';
    this.vgVoiceName = d.voiceName || '';

    this.vgFinalVideoUrl = d.finalVideoUrl || '';

    this.vgError = '';

    this.vgUploading = false;

    this.vgAnalyzing = false;

    this.vgGeneratingScript = false;

    this.vgGeneratingImages = false;

    this.vgSynthesizing = false;

    this.vgCompositing = false;

    // 切换到视频生成页

    this.setCurrentTab('video-generation');

    this.showToast(`已恢复任务：${d.sourceFileName}，当前在第${d.step}步`, 'success');

    this.refreshView();

  }



  // Step 1: 选择源视频文件

  vgSelectFile(event: Event): void {

    const input = event.target as HTMLInputElement;

    const file = input?.files?.[0];

    if (!file) return;

    if (!file.type.startsWith('video/')) {

      this.showToast('请选择视频文件', 'warn');

      return;

    }

    this.vgSourceFile = file;

    this.vgSourceFileName = file.name;

    this.vgSourceVideoUrl = URL.createObjectURL(file);

    this.vgError = '';

  }



  // Step 1 → 2: 上传视频并进入解析

  vgUploadAndAnalyze(): void {

    if (!this.vgSourceFile || this.vgUploading) return;

    this.vgUploading = true;

    this.vgUploadProgress = 0;

    this.vgError = '';

    const file = this.vgSourceFile;
    const title = `视频生成源 - ${new Date().toLocaleString('zh-CN')}`;
    let uploadedEntry: any = null;

    this.qiniuUpload.uploadFileWithProgress(file, file.name, file.type || 'video/mp4', 'video').pipe(
      switchMap((event) => {
        if (event.state === 'progress') {
          this.vgUploadProgress = event.progress;
          this.cdr.detectChanges();
          return of(null);
        }
        const url = event.url || '';
        if (!url) throw new Error('上传失败：未返回视频 URL');
        uploadedEntry = this.createUploadedVideoEntry(file, url, title, '视频生成源素材', ['视频生成']);
        return this.http.post<any>('/backend/api/manifest', uploadedEntry);
      })
    ).subscribe({
      next: (res) => {
        if (!res) return;
        const entry = res?.video || res?.data || uploadedEntry;
        this.vgUploading = false;
        this.vgVideoId = entry.id;
        const newVideo = this.toManagedVideo(entry);
        if (!this.managedVideos.some(v => v.id === newVideo.id)) {
          this.managedVideos.unshift(newVideo);
          this.updateCategoryCounts();
        }
        this.vgStep = 2;
        this.vgCreateTask();
        this.vgUpdateTaskProgress('vg-analyze', 15);
        this.vgStartAnalysis();
        this.cdr.detectChanges();
      },
      error: (err: any) => {
        this.vgUploading = false;
        this.vgError = err?.error?.error || err?.message || '上传失败';
        this.cdr.detectChanges();
      }
    });

  }



  // Step 2: Gemini 视频识别（分析 + 转录），Whisper 作为降级方案

  private vgStartAnalysis(): void {

    this.vgAnalyzing = true;

    this.vgTranscript = '';

    this.vgAnalysisText = '';

    this.refreshView();



    const fileSizeMB = this.vgSourceFile ? this.vgSourceFile.size / 1024 / 1024 : 0;



    if (this.vgSourceFile && fileSizeMB <= 20) {

      // ≤20MB：Gemini 直接分析视频（画面+音频+转录）

      this.vgAnalysisText = `正在将视频 (${fileSizeMB.toFixed(1)}MB) 发送给 Gemini 进行视频理解...`;

      this.refreshView();

      this.vgRunGeminiAnalysisAndTranscript();

    } else if (this.vgVideoId) {

      // >20MB：浏览器 ffmpeg.wasm 提取音轨 → Gemini 音频识别 + 转录

      this.vgAnalysisText = `视频 ${fileSizeMB.toFixed(1)}MB 超过 Gemini 视频限制，正在提取音轨用 Gemini 音频识别...`;

      this.refreshView();

      this.vgRunAudioExtractAndGemini();

    } else {

      // 无文件 → Whisper 降级

      this.vgAnalysisText = '使用 Whisper 语音识别...';

      this.refreshView();

      this.vgRunWhisperFallback();

    }

  }



  // Gemini 一次请求：视频分析 + 精确转录

  private async vgRunGeminiAnalysisAndTranscript(): Promise<void> {

    try {

      const base64 = await this.llmService.fileToBase64(this.vgSourceFile!);

      const mimeType = this.vgSourceFile!.type || 'video/mp4';



      const prompt = `你是一个专业的视频内容分析师。请仔细观看这个视频，完成以下两个任务：



===== 任务一：视频内容分析 =====

从画面和音频两个维度进行全面分析，提取：

1. **视频主题和核心观点**：视频讲了什么

2. **画面内容描述**：出现了哪些场景、人物、物体、文字

3. **目标受众**：适合什么人群观看

4. **内容风格**：教程/评测/新闻/故事/口播/Vlog等

5. **关键知识点或亮点**（3-5条）

6. **视觉风格评价**：画面质量、构图、色调、字幕等

7. **建议的改进方向**



===== 任务二：完整语音转录 =====

请将视频中所有语音内容逐字转录为中文文本。要求：

- 忠实还原每一句话，不遗漏、不改写、不总结

- 保留说话人的原始用词和语气

- 按自然段落分段

- 如有专业术语或人名，请尽量准确



请严格按以下格式输出（用分隔线区分两部分）：



【内容分析】

（这里输出任务一的分析结果）



---TRANSCRIPT_START---

（这里输出任务二的完整语音转录文本，只包含转录内容，不要加任何说明）

---TRANSCRIPT_END---`;



      this.llmService.analyzeVideo(base64, mimeType, prompt, {

        model: 'gemini-2.5-flash',

        generationConfig: { maxOutputTokens: 8192 }

      }).subscribe({

        next: (result) => {

          this.vgParseGeminiResult(result);

          this.vgAnalyzing = false;

          this.vgUpdateTaskProgress('vg-analyze', 25);

          this.refreshView();

        },

        error: (err) => {

          console.warn('⚠️ Gemini 视频识别失败，降级为 Whisper:', err);

          this.vgAnalysisText = 'Gemini 识别失败，正在使用 Whisper 语音识别...';

          this.refreshView();

          this.vgRunWhisperFallback();

        }

      });

    } catch (err) {

      console.warn('⚠️ 视频文件读取失败:', err);

      this.vgAnalysisText = '视频文件读取失败，正在使用 Whisper 语音识别...';

      this.refreshView();

      this.vgRunWhisperFallback();

    }

  }



  // 解析 Gemini 返回结果：拆分「内容分析」和「转录文本」

  private vgParseGeminiResult(raw: string): void {

    const transcriptMatch = raw.match(/---TRANSCRIPT_START---([\s\S]*?)---TRANSCRIPT_END---/);

    if (transcriptMatch) {

      this.vgTranscript = transcriptMatch[1].trim();

      // 分析部分 = 转录标记之前的内容

      const analysisPart = raw.substring(0, raw.indexOf('---TRANSCRIPT_START---')).trim();

      this.vgAnalysisText = analysisPart.replace(/^【内容分析】\s*/, '') || '分析完成';

      console.log(`✅ Gemini 分析+转录完成 (转录 ${this.vgTranscript.length} 字)`);

    } else {

      // 没有找到转录标记，整体作为分析结果

      this.vgAnalysisText = raw || '分析完成';

      console.warn('⚠️ Gemini 未返回转录标记，需手动输入文字稿');

    }

  }



  // >20MB 视频：浏览器 ffmpeg.wasm 提取音轨 → Gemini 音频识别（分析+转录）

  private vgRunAudioExtractAndGemini(): void {

    const video = this.managedVideos.find(v => v.id === this.vgVideoId);
    const source = this.vgSourceFile || (video ? this.getVideoPlayUrl(video) : '');
    if (!source) {
      this.vgAnalysisText = '缺少可访问的视频文件，无法提取音轨';
      this.refreshView();
      this.vgRunWhisperFallback();
      return;
    }

    from(this.browserFfmpeg.extractAudioForGemini(source, `vg-${Date.now()}.m4a`)).subscribe({

      next: (audio: BrowserAudioExtractionResult) => {

          const audioSizeMB = audio.sizeMB || 0;

          console.log(`🎵 音轨提取完成 (${audioSizeMB}MB)，发送给 Gemini 音频识别...`);

          this.vgAnalysisText = `音轨提取完成 (${audioSizeMB.toFixed(1)}MB)，正在 Gemini 音频识别...`;

          this.refreshView();



          if (audioSizeMB > 20) {

            // 音频仍然过大，降级为 Whisper

            console.warn('⚠️ 提取的音频仍超过 20MB，降级为 Whisper');

            this.vgAnalysisText = '音频文件仍较大，改用 Whisper 识别...';

            this.refreshView();

            this.vgRunWhisperFallback();

            return;

          }



          const prompt = `你是一个专业的音频内容分析师。请仔细听这段音频，完成以下两个任务：



===== 任务一：内容分析 =====

从音频内容进行分析，提取：

1. **主题和核心观点**：音频讲了什么

2. **目标受众**：适合什么人群

3. **内容风格**：教程/评测/新闻/故事/口播等

4. **关键知识点或亮点**（3-5条）

5. **建议的改进方向**



===== 任务二：完整语音转录 =====

请将音频中所有语音内容逐字转录为中文文本。要求：

- 忠实还原每一句话，不遗漏、不改写、不总结

- 保留说话人的原始用词和语气

- 按自然段落分段

- 如有专业术语或人名，请尽量准确



请严格按以下格式输出（用分隔线区分两部分）：



【内容分析】

（这里输出任务一的分析结果）



---TRANSCRIPT_START---

（这里输出任务二的完整语音转录文本，只包含转录内容，不要加任何说明）

---TRANSCRIPT_END---`;



          this.llmService.analyzeAudio(audio.base64, audio.mimeType || 'audio/mp4', prompt, {

            model: 'gemini-2.5-flash',

            generationConfig: { maxOutputTokens: 8192 }

          }).subscribe({

            next: (result) => {

              this.vgParseGeminiResult(result);

              this.vgAnalyzing = false;

              this.refreshView();

            },

            error: (err) => {

              console.warn('⚠️ Gemini 音频识别失败，降级为 Whisper:', err);

              this.vgAnalysisText = 'Gemini 音频识别失败，改用 Whisper...';

              this.refreshView();

              this.vgRunWhisperFallback();

            }

          });

      },

      error: (err) => {

        const detail = err?.error?.error || err?.message || `HTTP ${err?.status}`;

        console.warn('⚠️ 音轨提取失败:', detail, err);

        this.vgAnalysisText = `音轨提取失败 (${detail})，改用 Whisper...`;

        this.refreshView();

        this.vgRunWhisperFallback();

      }

    });

  }



  // 降级方案：Whisper 转录 + GPT 文本分析

  private vgRunWhisperFallback(): void {

    this.http.post<any>('/backend/api/whisper/transcribe', {

      videoId: this.vgVideoId,

      language: 'Chinese',

      model: 'large'

    }).subscribe({

      next: (res) => {

        if (res?.success && res?.transcript) {

          this.vgTranscript = res.transcript;

          this.vgAnalysisText = 'Whisper 转录完成，正在 AI 分析内容...';

          this.refreshView();

          // 用 GPT 做文本分析

          this.vgDoTextAnalysis();

        } else {

          this.vgAnalyzing = false;

          this.vgAnalysisText = '语音识别完成但未返回文字稿，请手动输入';

          this.refreshView();

        }

      },

      error: (err) => {

        this.vgAnalyzing = false;

        this.vgAnalysisText = `Whisper 识别失败: ${err?.error?.error || err?.message || '未知错误'}。请手动输入文字稿。`;

        this.refreshView();

      }

    });

  }



  private vgDoTextAnalysis(): void {

    const systemPrompt = `你是一个专业的视频内容分析师。请分析以下视频的转录文字稿，提取：

1. 视频主题和核心观点

2. 目标受众

3. 内容风格（教程/评测/新闻/故事等）

4. 关键知识点或亮点（3-5条）

5. 建议的改进方向



请用简洁的中文回复。`;



    this.llmService.askWithSystem(systemPrompt, this.vgTranscript, { model: 'gemini-2.5-flash', max_tokens: 1024 }).subscribe({

      next: (analysis) => {

        this.vgAnalysisText = analysis || '分析完成';

        this.vgAnalyzing = false;

        this.refreshView();

      },

      error: () => {

        this.vgAnalysisText = '（AI 文本分析暂不可用，已完成 Whisper 转录）';

        this.vgAnalyzing = false;

        this.refreshView();

      }

    });

  }



  vgConfirmAnalysis(): void {

    if (!this.vgTranscript.trim()) {

      this.showToast('请先完成视频转录或手动输入文字稿', 'warn');

      return;

    }

    this.vgStep = 3;

    this.vgUpdateTaskProgress('vg-script', 30);

    this.vgGenerateScript();

  }



  // Step 3: LLM 生成分镜脚本

  private vgGenerateScript(): void {

    this.vgGeneratingScript = true;

    this.vgScript = '';

    this.vgScriptSegments = [];



    const systemPrompt = `你是一个专业的短视频脚本编剧。根据以下视频转录文字稿，生成一个完整的分镜脚本。



⚠️ 最重要的要求：你必须完整覆盖原文的全部内容，不得遗漏任何段落或要点！将原文从头到尾全部改写为分镜旁白，确保信息量100%覆盖。



要求：

1. 根据内容长度自动决定片段数量（短文5-8段，长文8-15段），确保原文每一段内容都被覆盖到

2. 每个片段包含：旁白文本(narration)、配图英文提示词(imagePrompt)、配图中文提示词(imagePromptCn)

3. 旁白文本要求：必须包含原文中的所有关键信息、数据、观点，不能省略或概括，只做口语化改写

4. 配图中文提示词(imagePromptCn)是最重要的配图生成依据，要求：

   - 描述一幅完整的16:9横版信息图/示意图画面

   - 必须全部用中文描述，图片中的所有文字标注都是中文

   - 内容紧密关联该段旁白，提取关键数据、概念、流程等

   - 风格：白色或浅色简洁背景，扁平化设计，信息图表/流程图/概念图

   - 包含中文大标题、关键词、数据可视化、图标、箭头等元素

   - 注意：提示词中不要出现"PPT"、"幻灯片"、"演示文稿"等字样，只描述画面内容本身

5. 配图英文提示词(imagePrompt)是备选提示词，描述同样的画面内容



请严格按以下 JSON 格式返回（不要包含其他文字，不要用 markdown 代码块包裹）：

[

  {"id": "S-01", "narration": "旁白文本...", "imagePrompt": "English: 16:9 infographic...", "imagePromptCn": "16:9横版信息图，白色背景，大标题"xxx"，下方用流程图展示xxx的步骤..."},

  {"id": "S-02", "narration": "旁白文本...", "imagePrompt": "English: 16:9 infographic...", "imagePromptCn": "16:9横版信息图，浅色背景，标题"xxx"，用图标和箭头展示xxx的关系..."}

]`;



    this.llmService.askWithSystem(systemPrompt, this.vgTranscript, { model: 'gemini-2.5-flash', max_tokens: 16384 }).subscribe({

      next: (result) => {

        this.vgScript = result;

        this.vgGeneratingScript = false;

        this.vgParseScriptSegments(result);

        this.vgUpdateTaskProgress('vg-script', 40);

        this.refreshView();

      },

      error: (err) => {

        this.vgGeneratingScript = false;

        this.vgError = `脚本生成失败: ${err?.message || '请重试'}`;

        this.vgUpdateTaskProgress('vg-script', 30, 'failed');

        this.refreshView();

      }

    });

  }



  private vgParseScriptSegments(raw: string): void {

    console.log('📝 原始脚本响应:', raw.substring(0, 500));



    // 1. 去除 markdown code block 包裹

    let cleaned = raw;

    const codeBlockMatch = cleaned.match(/```(?:json)?\s*([\s\S]*?)```/);

    if (codeBlockMatch) {

      cleaned = codeBlockMatch[1].trim();

    }



    // 2. 尝试提取 JSON 数组

    const jsonMatch = cleaned.match(/\[[\s\S]*\]/);

    if (jsonMatch) {

      cleaned = jsonMatch[0];

    }



    // 3. 修复常见 JSON 问题（尾部逗号）

    cleaned = cleaned.replace(/,\s*([}\]])/g, '$1');



    try {

      const parsed = JSON.parse(cleaned);

      if (Array.isArray(parsed) && parsed.length > 0) {

        this.vgScriptSegments = parsed.map((item: any, i: number) => ({

          id: item.id || `S-${String(i + 1).padStart(2, '0')}`,

          narration: item.narration || '',

          imagePrompt: item.imagePrompt || item.image_prompt || '',

          imagePromptCn: item.imagePromptCn || item.image_prompt_cn || ''

        }));

        console.log(`✅ 脚本解析成功: ${this.vgScriptSegments.length} 个片段`);

        return;

      }

    } catch (e) {

      console.warn('⚠️ JSON.parse 失败:', (e as Error).message);

    }



    // 4. 逐对象提取 fallback：正则匹配每个 {...} 块

    try {

      const objMatches = cleaned.match(/\{[^{}]*\}/g);

      if (objMatches && objMatches.length > 0) {

        const segments: any[] = [];

        for (const objStr of objMatches) {

          try {

            const obj = JSON.parse(objStr.replace(/,\s*}/g, '}'));

            if (obj.narration) segments.push(obj);

          } catch {}

        }

        if (segments.length > 0) {

          this.vgScriptSegments = segments.map((item: any, i: number) => ({

            id: item.id || `S-${String(i + 1).padStart(2, '0')}`,

            narration: item.narration || '',

            imagePrompt: item.imagePrompt || item.image_prompt || '',

            imagePromptCn: item.imagePromptCn || item.image_prompt_cn || ''

          }));

          console.log(`✅ 逐对象解析成功: ${this.vgScriptSegments.length} 个片段`);

          return;

        }

      }

    } catch {}



    // 5. 最终 fallback：保留原始文本供用户手动编辑

    console.warn('⚠️ 脚本解析全部失败，显示原文供手动编辑');

    this.vgScriptSegments = [{

      id: 'S-01',

      narration: raw.replace(/```[\s\S]*?```/g, '').trim(),

      imagePrompt: 'Professional PPT slide illustration, clean white background, infographic style',

      imagePromptCn: '（脚本自动解析失败，请手动拆分片段）'

    }];

  }



  vgConfirmScript(): void {

    if (this.vgScriptSegments.length === 0) {

      this.showToast('请先生成或编辑脚本', 'warn');

      return;

    }

    this.vgStep = 4;

    this.vgUpdateTaskProgress('vg-image', 45);

    // 初始化图片结果列表

    this.vgImageResults = this.vgScriptSegments.map(seg => ({

      id: seg.id,

      prompt: seg.imagePromptCn || seg.imagePrompt,

      imageUrl: '',

      status: 'pending' as const

    }));

  }



  // Step 4: 批量生成配图（使用即梦 API）

  vgGenerateImages(): void {

    if (this.vgGeneratingImages) return;

    this.vgGeneratingImages = true;

    this.vgImageProgress = 0;



    const pending = this.vgImageResults.filter(r => r.status === 'pending');

    if (pending.length === 0) {

      this.vgGeneratingImages = false;

      return;

    }



    let completed = 0;

    const total = pending.length;



    const RETRY_MAX = 5;

    const RETRY_DELAY = 15000; // 并发超限时等 15 秒重试

    const GAP_DELAY = 6000;   // 每张图之间间隔 6 秒，避免并发



    const generateNext = (index: number, retryCount: number = 0) => {

      if (index >= pending.length) {

        this.vgGeneratingImages = false;

        this.vgUpdateTaskProgress('vg-image', 60);

        this.showToast(`配图生成完成 (${completed}/${total})`, completed > 0 ? 'success' : 'warn');

        this.refreshView();

        return;

      }



      const item = pending[index];

      item.status = 'generating';

      this.refreshView();



      this.jimengService.generateImage(item.prompt, 1920, 1080).subscribe({

        next: (res: any) => {

          const workId = res?.data?.workId || res?.workId;

          if (!workId) {

            item.status = 'failed';

            completed++;

            this.refreshView();

            setTimeout(() => generateNext(index + 1), GAP_DELAY);

            return;

          }

          this.jimengService.pollUntilComplete(workId, 'getText2ImgV31', (status: any, attempt: number) => {

            this.vgImageProgress = Math.round(((completed + Math.min(attempt / 20, 0.9)) / total) * 100);

            this.refreshView();

          }).subscribe({

            next: (result: any) => {

              const imageUrl = result?.images?.[0] || result?.url || '';

              item.imageUrl = imageUrl;

              item.status = imageUrl ? 'done' : 'failed';

              completed++;

              this.vgImageProgress = Math.round((completed / total) * 100);

              this.refreshView();

              setTimeout(() => generateNext(index + 1), GAP_DELAY);

            },

            error: () => {

              item.status = 'failed';

              completed++;

              this.refreshView();

              setTimeout(() => generateNext(index + 1), GAP_DELAY);

            }

          });

        },

        error: (err) => {

          const errMsg = err?.error?.error?.message || err?.error?.message || err?.message || '';

          const isRetryable = errMsg.includes('并发超限') || err?.status === 500 || err?.status === 429;

          if (isRetryable && retryCount < RETRY_MAX) {

            const backoff = RETRY_DELAY * (retryCount + 1); // 递增退避: 15s, 30s, 45s...

            console.warn(`⚠️ 配图 ${item.id} 请求失败(${errMsg || err?.status})，${backoff / 1000}s 后第${retryCount + 1}次重试...`);

            item.status = 'pending';

            this.refreshView();

            setTimeout(() => generateNext(index, retryCount + 1), backoff);

          } else {

            console.error(`❌ 配图 ${item.id} 最终失败:`, errMsg || err?.status);

            item.status = 'failed';

            completed++;

            this.refreshView();

            setTimeout(() => generateNext(index + 1), GAP_DELAY);

          }

        }

      });

    };



    generateNext(0);

  }



  vgConfirmImages(): void {

    this.vgStep = 5;

    this.vgUpdateTaskProgress('vg-voice', 65);

  }



  // Step 5: 语音配音

  vgSynthesizeAll(): void {

    if (this.vgSynthesizing) return;

    this.vgSynthesizing = true;

    this.vgAudioUrls = [];

    this.vgError = '';



    const segments = this.vgScriptSegments;

    let index = 0;
    const failures: string[] = [];



    const synthNext = () => {

      if (index >= segments.length) {
        this.vgSynthesizing = false;

        const voicedSegments = segments.filter((item) => item.narration.trim());
        const total = voicedSegments.length || segments.length;
        const firstFailure = failures[0] ? `首个错误：${failures[0]}` : '';

        if (this.vgAudioUrls.length === total) {
          this.vgUpdateTaskProgress('vg-voice', 80);
          this.showToast(`配音完成 (${this.vgAudioUrls.length}/${total})`, 'success');
        } else if (this.vgAudioUrls.length > 0) {
          this.vgError = `配音部分完成：${this.vgAudioUrls.length}/${total} 段成功，失败 ${total - this.vgAudioUrls.length} 段。${firstFailure}`;
          this.showToast(this.vgError, 'warn');
        } else {
          this.vgError = `配音失败：${total} 段均未生成音频。${firstFailure}`;
          this.showToast(this.vgError, 'error');
        }

        this.refreshView();

        return;

      }



      const seg = segments[index];

      const text = seg.narration;

      if (!text.trim()) {

        index++;

        synthNext();

        return;

      }



      // 使用远程 TTS 合成（server.fmode.cn）

      const payload: any = {

        token: this.voiceApiToken,

        text,

        isStream: false,

        audio_params: {

          format: 'mp3',

          sample_rate: 24000,

          speech_rate: 0,

          loudness_rate: 0

        }

      };



      this.applyVoiceSelectionToTtsPayload(
        payload,
        this.vgVoiceMode,
        this.vgVoiceSpeakerId || 'zh_female_shuangkuai-am_16k',
        this.vgVoiceTimbreId || '',
      );



      this.http.post<any>(`${this.voiceTtsBaseUrl}/unidirectional`, payload).subscribe({

        next: (res) => {

          const audioUrl = res?.data?.audioUrl || '';

          if (audioUrl) {

            this.vgAudioUrls.push({ segId: seg.id, audioUrl });

          } else {

            const message = this.getErrorText(res, '未返回 audioUrl');
            failures.push(`${seg.id}: ${message}`);

            console.warn(`配音片段 ${seg.id}: 未返回 audioUrl`, res);

          }

          index++;

          this.refreshView();

          synthNext();

        },

        error: (err) => {

          failures.push(`${seg.id}: ${this.getErrorText(err, 'TTS 请求失败')}`);

          console.warn(`配音片段 ${seg.id} 失败:`, err);

          index++;

          synthNext();

        }

      });

    };



    synthNext();

  }



  vgConfirmVoice(): void {

    this.vgStep = 6;

    this.vgUpdateTaskProgress('vg-composite', 85);

  }



  // Step 6: 合成最终视频（图片+音频 → 视频）

  vgComposite(): void {

    this.vgCompositing = true;

    this.vgCompositingProgress = 0;

    this.vgFinalVideoUrl = '';

    this.vgError = '';

    this.refreshView();



    // 构建片段数据：匹配图片和音频

    const segments: { id: string; imageUrl: string; audioUrl: string; }[] = [];

    for (const seg of this.vgScriptSegments) {

      const img = this.vgImageResults.find(r => r.id === seg.id);

      const audio = this.vgAudioUrls.find(a => a.segId === seg.id);

      if (img?.imageUrl && audio?.audioUrl) {

        segments.push({ id: seg.id, imageUrl: img.imageUrl, audioUrl: audio.audioUrl });

      }

    }



    if (segments.length === 0) {

      this.vgCompositing = false;

      this.vgError = '没有可用的图片+音频配对，无法合成视频';

      this.showToast(this.vgError, 'error');

      this.refreshView();

      return;

    }



    // 模拟进度（因为后端是同步处理，用定时器模拟进度条）

    let fakeProgress = 0;

    const progressTimer = setInterval(() => {

      fakeProgress = Math.min(fakeProgress + 2, 90);

      this.vgCompositingProgress = fakeProgress;

      this.refreshView();

    }, 1000);



    this.http.post<any>('/backend/api/video/composite', {

      segments,

      title: this.vgSourceFileName?.replace(/\.[^.]+$/, '') || '视频生成'

    }).subscribe({

      next: (res) => {

        clearInterval(progressTimer);

        this.vgCompositingProgress = 100;

        this.vgCompositing = false;

        if (res?.success && res?.videoUrl) {

          this.vgFinalVideoUrl = '/backend' + res.videoUrl;

          this.vgUpdateTaskProgress('vg-composite', 100, 'completed');

          this.showToast(`视频合成完成！共 ${res.segments} 个片段`, 'success');

        } else {

          this.vgError = '合成返回结果异常';

          this.vgUpdateTaskProgress('vg-composite', 90, 'failed');

          this.showToast(this.vgError, 'error');

        }

        this.refreshView();

      },

      error: (err) => {

        clearInterval(progressTimer);

        this.vgCompositing = false;

        this.vgCompositingProgress = 0;

        this.vgError = `视频合成失败: ${err?.error?.error || err?.message || '请重试'}`;

        this.vgUpdateTaskProgress('vg-composite', 85, 'failed');

        this.showToast(this.vgError, 'error');

        this.refreshView();

      }

    });

  }



  // 回到上一步

  vgPrevStep(): void {

    if (this.vgStep > 1) this.vgStep--;

  }



  // ===== 卡片瀑布展开/折叠控制 =====

  vgGetStepState(n: number): 'done' | 'active' | 'locked' {

    if (n < this.vgStep) return 'done';

    if (n === this.vgStep) return 'active';

    return 'locked';

  }

  vgIsStepExpanded(n: number): boolean {

    if (n > this.vgStep) return false;       // 未解锁：永远折叠

    if (n === this.vgStep) return true;      // 当前步骤：始终展开

    return this.vgUserExpandedSteps.has(n);  // 已完成：仅在用户手动展开时显示

  }

  vgToggleStepExpand(n: number): void {

    if (n >= this.vgStep) return;            // 当前/未解锁不可切换

    if (this.vgUserExpandedSteps.has(n)) this.vgUserExpandedSteps.delete(n);

    else this.vgUserExpandedSteps.add(n);

  }

  // 跳转到某个已完成步骤进行编辑（同时展开它）

  vgEditStep(n: number): void {

    if (n > this.vgStep) return;             // 不能跳到未解锁

    if (n < this.vgStep) {

      const downstream = this.vgStep - n;

      const ok = confirm(`返回步骤 ${n}「${this.vgStepLabels[n - 1]}」编辑后，需要重新确认下游 ${downstream} 个步骤，相关结果（脚本/配图/配音/合成）可能会被覆盖。是否继续？`);

      if (!ok) return;

    }

    this.vgStep = n;

    // 同时把该步骤从用户展开集合中清除（active 步骤会自动展开）

    this.vgUserExpandedSteps.delete(n);

  }



  // 重新生成脚本

  vgRegenerateScript(): void {

    this.vgGenerateScript();

  }



  private addDhVideoToManifest(videoUrl: string): void {

    const now = new Date();

    const id = `DH-${Date.now()}`;

    const title = `数字人合成 - ${now.toLocaleString('zh-CN')}`;

    const filename = videoUrl.split('/').pop() || `digital-human-${id}.mp4`;

    const newEntry = {

      id,

      title,

      filename,

      filepath: videoUrl,

      size: 0,

      duration: 0,

      created_at: now.toISOString(),

      modified_at: now.toISOString(),

      category: 'general',

      tags: ['数字人', 'AI生成'],

      description: `数字人合成视频 (${this.dhResolution})`,

      source: 'generated',

      metadata: {

        resolution: this.dhResolution === '1080p' ? '1920x1080' : '1280x720',

        format: 'mp4'

      }

    };



    this.http.post<any>('/backend/api/manifest', newEntry).subscribe({

      next: (res) => {

        if (res?.success) {

          this.managedVideos.unshift({

            ...newEntry,

            created_at: now,

            modified_at: now,

            source: 'generated' as const

          } as ManagedVideo);

          this.updateCategoryCounts();

          console.log('📁 数字人视频已同步到视频管理:', id);

        }

      },

      error: (err) => console.warn('⚠️ 同步视频管理失败:', err)

    });

  }



}