import { Component, EventEmitter, Input, Output, OnChanges, SimpleChanges } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { HttpClient } from '@angular/common/http';

/** 官方音色库条目 */
export interface OfficialVoice {
  voiceType: string;        // 火山 voice_type（如 zh_male_sunwukong_uranus_bigtts）
  name: string;             // 显示名
  scene: string;            // 场景分组
  language: string;         // 语种
  tags?: string[];          // 特殊标签（抖音同款、剪映同款 等）
}

/** 已复刻音色条目（与 app.ts 中 vsClonedTimbreList 类型一致） */
export interface ClonedTimbre {
  objectId: string;
  name: string;
  speakerId: string;
}

/** 选择结果，向外抛 */
export interface VoiceSelection {
  source: 'official' | 'cloned';
  name: string;
  /** source=official 时为 voiceType；source=cloned 时为 objectId */
  id: string;
  /** 仅 official 时有值 */
  voiceType?: string;
  /** 仅 cloned 时有值 */
  timbreId?: string;
  speakerId?: string;
}

/** 精选官方音色库（首批 25 个，覆盖 6 个场景） */
export const OFFICIAL_VOICE_LIBRARY: OfficialVoice[] = [
  // 通用场景
  { voiceType: 'zh_female_vv_uranus_bigtts',           name: 'Vivi 2.0',         scene: '通用',     language: '中文/日文/印尼/西语' },
  { voiceType: 'zh_female_sophie_uranus_bigtts',       name: '魅力苏菲 2.0',     scene: '通用',     language: '中文' },
  { voiceType: 'zh_female_qingxinnvsheng_uranus_bigtts', name: '清新女声 2.0',   scene: '通用',     language: '中文' },
  { voiceType: 'zh_male_m191_uranus_bigtts',           name: '云舟 2.0',         scene: '通用',     language: '中文' },
  { voiceType: 'zh_male_taocheng_uranus_bigtts',       name: '小天 2.0',         scene: '通用',     language: '中文' },
  { voiceType: 'zh_female_xiaohe_uranus_bigtts',       name: '小何 2.0',         scene: '通用',     language: '中文' },

  // 角色扮演
  { voiceType: 'zh_female_cancan_uranus_bigtts',       name: '知性灿灿 2.0',     scene: '角色扮演', language: '中文' },
  { voiceType: 'zh_female_sajiaoxuemei_uranus_bigtts', name: '撒娇学妹 2.0',     scene: '角色扮演', language: '中文' },
  { voiceType: 'zh_male_silang_uranus_bigtts',         name: '四郎 2.0',         scene: '角色扮演', language: '中文', tags: ['抖音同款','剪映同款'] },
  { voiceType: 'zh_male_qingcang_uranus_bigtts',       name: '擎苍 2.0',         scene: '角色扮演', language: '中文', tags: ['番茄同款','抖音同款'] },
  { voiceType: 'zh_male_xionger_uranus_bigtts',        name: '熊二 2.0',         scene: '角色扮演', language: '中文', tags: ['剪映同款'] },

  // 有声阅读
  { voiceType: 'zh_male_baqiqingshu_uranus_bigtts',    name: '霸气青叔 2.0',     scene: '有声阅读', language: '中文', tags: ['番茄同款'] },
  { voiceType: 'zh_male_xuanyijieshuo_uranus_bigtts',  name: '悬疑解说 2.0',     scene: '有声阅读', language: '中文', tags: ['抖音同款'] },
  { voiceType: 'zh_female_xiaoxue_uranus_bigtts',      name: '儿童绘本 2.0',     scene: '有声阅读', language: '中文' },
  { voiceType: 'zh_female_shaoergushi_uranus_bigtts',  name: '少儿故事 2.0',     scene: '有声阅读', language: '中文' },

  // 视频配音
  { voiceType: 'zh_male_sunwukong_uranus_bigtts',      name: '猴哥 2.0',         scene: '视频配音', language: '中文' },
  { voiceType: 'zh_female_peiqi_uranus_bigtts',        name: '佩奇猪 2.0',       scene: '视频配音', language: '中文', tags: ['抖音同款','剪映同款'] },
  { voiceType: 'zh_male_dayi_uranus_bigtts',           name: '大壹 2.0',         scene: '视频配音', language: '中文' },
  { voiceType: 'zh_male_ruyayichen_uranus_bigtts',     name: '儒雅逸辰 2.0',     scene: '视频配音', language: '中文' },
  { voiceType: 'zh_male_cixingjieshuonan_uranus_bigtts', name: '磁性解说 Morgan 2.0', scene: '视频配音', language: '中文', tags: ['抖音同款'] },

  // 客服场景
  { voiceType: 'zh_female_kefunvsheng_uranus_bigtts',  name: '暖阳女声 2.0',     scene: '客服',     language: '中文' },
  { voiceType: 'zh_female_yingyujiaoxue_uranus_bigtts', name: 'Tina老师 2.0',    scene: '客服',     language: '中文/英语' },

  // 多语种
  { voiceType: 'en_male_tim_uranus_bigtts',            name: 'Tim',              scene: '多语种',   language: '美式英语' },
  { voiceType: 'en_female_dacey_uranus_bigtts',        name: 'Dacey',            scene: '多语种',   language: '美式英语' },
  { voiceType: 'en_female_stokie_uranus_bigtts',       name: 'Stokie',           scene: '多语种',   language: '美式英语' },
];

const VOICE_LIBRARY_SCENES = ['全部', '通用', '角色扮演', '有声阅读', '视频配音', '客服', '多语种'];

/** 用于试听的固定文本 */
const PREVIEW_TEXT = '青山依旧在，几度夕阳红。';

/** TTS 代理（与 vsStartSynthesize 保持一致） */
const TTS_API_URL = 'https://server.fmode.cn/api/volcengine/tts/unidirectional';
const TTS_TOKEN = 'Bearer r:f0333969e312a40e4703e8fe4ed1c600';

@Component({
  selector: 'app-voice-picker',
  standalone: true,
  imports: [CommonModule, FormsModule],
  template: `
    <div class="vp-mask" *ngIf="open" (click)="onMaskClick($event)">
      <div class="vp-modal" (click)="$event.stopPropagation()">

        <!-- 头部：Tabs -->
        <header class="vp-header">
          <div class="vp-tabs">
            <button type="button" class="vp-tab"
                    [class.is-active]="activeTab === 'library'"
                    (click)="activeTab = 'library'">音色库</button>
            <button type="button" class="vp-tab"
                    [class.is-active]="activeTab === 'mine'"
                    (click)="activeTab = 'mine'">
              我的音色
              <span class="vp-tab-badge" *ngIf="clonedList?.length">{{clonedList.length}}</span>
            </button>
          </div>
          <button type="button" class="vp-close" (click)="emitClose()" title="关闭">✕</button>
        </header>

        <!-- 场景筛选 + 搜索（仅音色库 Tab） -->
        <div class="vp-toolbar" *ngIf="activeTab === 'library'">
          <div class="vp-scenes">
            <button type="button"
                    *ngFor="let s of scenes"
                    class="vp-scene-chip"
                    [class.is-active]="sceneFilter === s"
                    (click)="sceneFilter = s">{{s}}</button>
          </div>
          <input class="vp-search" type="text" placeholder="搜索音色名称/语种..."
                 [(ngModel)]="searchKeyword">
        </div>

        <!-- 内容区 -->
        <div class="vp-body">

          <!-- 音色库 -->
          <div *ngIf="activeTab === 'library'">
            <div class="vp-grid" *ngIf="filteredLibrary.length > 0">
              <article class="vp-card"
                       *ngFor="let v of filteredLibrary"
                       [class.is-selected]="isSelected('official', v.voiceType)"
                       (click)="onPick('official', v)">
                <div class="vp-card-head">
                  <div class="vp-avatar" [class.vp-avatar--male]="isMale(v.voiceType)">
                    {{v.name.charAt(0)}}
                  </div>
                  <button type="button" class="vp-play"
                          [class.is-loading]="previewLoadingKey === 'official:' + v.voiceType"
                          (click)="$event.stopPropagation(); preview('official', v.voiceType, v.name)"
                          title="试听">
                    <span *ngIf="previewLoadingKey !== 'official:' + v.voiceType">▶</span>
                    <span *ngIf="previewLoadingKey === 'official:' + v.voiceType" class="vp-spin">⟳</span>
                  </button>
                </div>
                <div class="vp-card-name" [title]="v.name">{{v.name}}</div>
                <div class="vp-card-meta">
                  <span class="vp-tag vp-tag--scene">{{v.scene}}</span>
                  <span class="vp-tag vp-tag--lang">{{v.language}}</span>
                </div>
                <div class="vp-card-tags" *ngIf="v.tags?.length">
                  <span class="vp-tag vp-tag--special" *ngFor="let t of v.tags">{{t}}</span>
                </div>
              </article>
            </div>
            <div class="vp-empty" *ngIf="filteredLibrary.length === 0">
              没有匹配的音色，换个关键词试试
            </div>
          </div>

          <!-- 我的音色 -->
          <div *ngIf="activeTab === 'mine'">
            <div class="vp-grid" *ngIf="clonedList && clonedList.length > 0">
              <article class="vp-card"
                       *ngFor="let t of clonedList"
                       [class.is-selected]="isSelected('cloned', t.objectId)"
                       (click)="onPickCloned(t)">
                <div class="vp-card-head">
                  <div class="vp-avatar vp-avatar--mine">{{(t.name || '?').charAt(0)}}</div>
                  <button type="button" class="vp-play"
                          [class.is-loading]="previewLoadingKey === 'cloned:' + t.objectId"
                          (click)="$event.stopPropagation(); preview('cloned', t.objectId, t.name)"
                          title="试听">
                    <span *ngIf="previewLoadingKey !== 'cloned:' + t.objectId">▶</span>
                    <span *ngIf="previewLoadingKey === 'cloned:' + t.objectId" class="vp-spin">⟳</span>
                  </button>
                </div>
                <div class="vp-card-name" [title]="t.name || t.objectId">{{t.name || t.objectId}}</div>
                <div class="vp-card-meta">
                  <span class="vp-tag vp-tag--mine">我的复刻</span>
                </div>
                <div class="vp-card-id" [title]="t.objectId">ID: {{t.objectId}}</div>
              </article>
            </div>
            <div class="vp-empty" *ngIf="!clonedList || clonedList.length === 0">
              你还没有复刻音色，先去左侧"音色复刻"训练一个吧
            </div>
          </div>

          <!-- 试听报错提示 -->
          <div class="vp-error" *ngIf="previewError">{{previewError}}</div>
        </div>

        <!-- 底部：当前选中 + 操作 -->
        <footer class="vp-footer">
          <div class="vp-selected">
            <span class="vp-selected-label">当前选择：</span>
            <span class="vp-selected-name" *ngIf="pendingSelection">
              {{pendingSelection.name}}
              <small class="vp-selected-src">
                ({{pendingSelection.source === 'official' ? '音色库' : '我的音色'}})
              </small>
            </span>
            <span class="vp-selected-empty" *ngIf="!pendingSelection">未选择</span>
          </div>
          <div class="vp-actions">
            <button type="button" class="vp-btn vp-btn--ghost" (click)="emitClose()">取消</button>
            <button type="button" class="vp-btn vp-btn--primary"
                    [disabled]="!pendingSelection"
                    (click)="confirm()">使用此音色</button>
          </div>
        </footer>

        <!-- 隐藏 audio 元素用于播放 -->
        <audio #previewAudio style="display:none" preload="auto"></audio>
      </div>
    </div>
  `,
  styles: [`
    :host { --vp-primary: #6366f1; --vp-primary-hover: #4f46e5; }
    .vp-mask {
      position: fixed; inset: 0; z-index: 9999;
      background: rgba(15, 23, 42, 0.55);
      display: flex; align-items: center; justify-content: center;
      padding: 24px; backdrop-filter: blur(4px);
      animation: vp-fade-in 160ms ease-out;
    }
    @keyframes vp-fade-in { from { opacity: 0 } to { opacity: 1 } }
    .vp-modal {
      width: min(960px, 100%); max-height: 88vh;
      background: #fff; border-radius: 16px;
      box-shadow: 0 24px 60px rgba(15,23,42,0.25);
      display: flex; flex-direction: column; overflow: hidden;
      animation: vp-pop-in 200ms cubic-bezier(.2,.9,.3,1.2);
    }
    @keyframes vp-pop-in { from { transform: scale(.96); opacity: 0 } to { transform: scale(1); opacity: 1 } }

    .vp-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 20px; border-bottom: 1px solid #e5e7eb;
    }
    .vp-tabs { display: flex; gap: 4px; }
    .vp-tab {
      background: transparent; border: none; padding: 8px 16px;
      font-size: 15px; font-weight: 600; color: #64748b;
      border-radius: 8px; cursor: pointer; transition: all .15s;
      display: inline-flex; align-items: center; gap: 6px;
    }
    .vp-tab:hover { background: #f1f5f9; color: #334155; }
    .vp-tab.is-active { background: #eef2ff; color: var(--vp-primary); }
    .vp-tab-badge {
      background: var(--vp-primary); color: #fff; font-size: 11px;
      padding: 1px 7px; border-radius: 10px; line-height: 1.4;
    }
    .vp-close {
      background: transparent; border: none; font-size: 18px;
      width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
      color: #64748b; transition: all .15s;
    }
    .vp-close:hover { background: #f1f5f9; color: #ef4444; }

    .vp-toolbar {
      display: flex; align-items: center; gap: 12px;
      padding: 12px 20px; border-bottom: 1px solid #f1f5f9;
      background: #fafbfc;
    }
    .vp-scenes { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
    .vp-scene-chip {
      background: #fff; border: 1px solid #e2e8f0; color: #64748b;
      padding: 5px 12px; border-radius: 16px; font-size: 13px;
      cursor: pointer; transition: all .15s;
    }
    .vp-scene-chip:hover { border-color: var(--vp-primary); color: var(--vp-primary); }
    .vp-scene-chip.is-active {
      background: var(--vp-primary); border-color: var(--vp-primary); color: #fff;
    }
    .vp-search {
      width: 200px; padding: 6px 12px; border: 1px solid #e2e8f0;
      border-radius: 16px; font-size: 13px; outline: none;
    }
    .vp-search:focus { border-color: var(--vp-primary); }

    .vp-body { flex: 1; overflow-y: auto; padding: 16px 20px; min-height: 320px; }
    .vp-grid {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
      gap: 12px;
    }
    .vp-card {
      background: #fff; border: 2px solid #e5e7eb; border-radius: 12px;
      padding: 12px; cursor: pointer; transition: all .15s;
      display: flex; flex-direction: column; gap: 8px;
    }
    .vp-card:hover { border-color: #c7d2fe; box-shadow: 0 4px 12px rgba(99,102,241,.1); }
    .vp-card.is-selected {
      border-color: var(--vp-primary);
      background: linear-gradient(135deg, #eef2ff 0%, #fff 100%);
      box-shadow: 0 0 0 3px rgba(99,102,241,.15);
    }
    .vp-card-head { display: flex; justify-content: space-between; align-items: center; }
    .vp-avatar {
      width: 36px; height: 36px; border-radius: 50%;
      background: linear-gradient(135deg, #f472b6, #ec4899);
      color: #fff; display: flex; align-items: center; justify-content: center;
      font-weight: 700; font-size: 16px;
    }
    .vp-avatar--male { background: linear-gradient(135deg, #60a5fa, #3b82f6); }
    .vp-avatar--mine { background: linear-gradient(135deg, #34d399, #10b981); }
    .vp-play {
      background: #f3f4f6; border: none; border-radius: 50%;
      width: 32px; height: 32px; cursor: pointer; font-size: 13px;
      color: var(--vp-primary); transition: all .15s;
      display: flex; align-items: center; justify-content: center;
    }
    .vp-play:hover { background: var(--vp-primary); color: #fff; }
    .vp-play.is-loading { background: #e0e7ff; }
    .vp-spin { display: inline-block; animation: vp-spin 1s linear infinite; }
    @keyframes vp-spin { to { transform: rotate(360deg); } }

    .vp-card-name {
      font-weight: 600; font-size: 14px; color: #1e293b;
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .vp-card-meta { display: flex; gap: 4px; flex-wrap: wrap; }
    .vp-card-tags { display: flex; gap: 4px; flex-wrap: wrap; }
    .vp-card-id {
      font-size: 11px; color: #94a3b8; overflow: hidden;
      text-overflow: ellipsis; white-space: nowrap;
    }
    .vp-tag {
      font-size: 11px; padding: 2px 8px; border-radius: 10px; line-height: 1.4;
    }
    .vp-tag--scene { background: #ede9fe; color: #7c3aed; }
    .vp-tag--lang  { background: #dbeafe; color: #1d4ed8; }
    .vp-tag--special { background: #fef3c7; color: #b45309; }
    .vp-tag--mine  { background: #d1fae5; color: #047857; }

    .vp-empty {
      text-align: center; color: #94a3b8; padding: 60px 20px; font-size: 14px;
    }
    .vp-error {
      margin-top: 12px; padding: 8px 12px; background: #fef2f2; color: #b91c1c;
      border-radius: 8px; font-size: 13px;
    }

    .vp-footer {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 20px; border-top: 1px solid #e5e7eb; background: #fafbfc;
      gap: 12px;
    }
    .vp-selected { font-size: 13px; color: #475569; overflow: hidden;
                   text-overflow: ellipsis; white-space: nowrap; }
    .vp-selected-label { color: #94a3b8; }
    .vp-selected-name { color: #1e293b; font-weight: 600; }
    .vp-selected-src { color: #94a3b8; font-weight: 400; font-size: 12px; }
    .vp-selected-empty { color: #94a3b8; }

    .vp-actions { display: flex; gap: 8px; }
    .vp-btn {
      padding: 8px 18px; border-radius: 8px; font-size: 14px; font-weight: 600;
      cursor: pointer; border: none; transition: all .15s;
    }
    .vp-btn--ghost { background: #fff; border: 1px solid #e2e8f0; color: #64748b; }
    .vp-btn--ghost:hover { border-color: #cbd5e1; color: #334155; }
    .vp-btn--primary { background: var(--vp-primary); color: #fff; }
    .vp-btn--primary:hover:not(:disabled) { background: var(--vp-primary-hover); }
    .vp-btn--primary:disabled { background: #cbd5e1; cursor: not-allowed; }
  `]
})
export class VoicePickerComponent implements OnChanges {
  /** 是否打开 */
  @Input() open: boolean = false;

  /** 用户的已复刻音色列表（外部传入） */
  @Input() clonedList: ClonedTimbre[] = [];

  /** 当前已选（用于回显高亮），可选 */
  @Input() currentSelection: VoiceSelection | null = null;

  /** 用户点"使用此音色"或双击时抛出 */
  @Output() select = new EventEmitter<VoiceSelection>();

  /** 用户点关闭/取消/遮罩时抛出 */
  @Output() close = new EventEmitter<void>();

  readonly officialLibrary = OFFICIAL_VOICE_LIBRARY;
  readonly scenes = VOICE_LIBRARY_SCENES;

  activeTab: 'library' | 'mine' = 'library';
  sceneFilter: string = '全部';
  searchKeyword: string = '';

  /** 暂存选择（在用户点"使用此音色"前不真正提交） */
  pendingSelection: VoiceSelection | null = null;

  /** 试听音频缓存：key = source:id，value = audio url（dataURL 或 http url） */
  private previewCache = new Map<string, string>();
  previewLoadingKey: string = '';
  previewError: string = '';
  private currentAudio: HTMLAudioElement | null = null;

  constructor(private http: HttpClient) {}

  ngOnChanges(changes: SimpleChanges): void {
    // 弹窗每次打开时根据已选项回显，并默认聚焦相应 Tab
    if (changes['open'] && this.open) {
      this.pendingSelection = this.currentSelection ? { ...this.currentSelection } : null;
      this.previewError = '';
      if (this.pendingSelection?.source === 'cloned') {
        this.activeTab = 'mine';
      } else {
        this.activeTab = 'library';
      }
    }
    // 关闭时停掉正在播放的试听
    if (changes['open'] && !this.open) {
      this.stopCurrentAudio();
    }
  }

  get filteredLibrary(): OfficialVoice[] {
    const kw = this.searchKeyword.trim().toLowerCase();
    return this.officialLibrary.filter(v => {
      if (this.sceneFilter !== '全部' && v.scene !== this.sceneFilter) return false;
      if (kw) {
        const hay = `${v.name} ${v.language} ${v.voiceType}`.toLowerCase();
        if (!hay.includes(kw)) return false;
      }
      return true;
    });
  }

  isSelected(source: 'official' | 'cloned', id: string): boolean {
    return this.pendingSelection?.source === source && this.pendingSelection?.id === id;
  }

  isMale(voiceType: string): boolean {
    return /(_male_)/.test(voiceType);
  }

  onPick(source: 'official', v: OfficialVoice): void {
    this.pendingSelection = {
      source: 'official',
      name: v.name,
      id: v.voiceType,
      voiceType: v.voiceType
    };
  }

  onPickCloned(t: ClonedTimbre): void {
    this.pendingSelection = {
      source: 'cloned',
      name: t.name || t.objectId,
      id: t.objectId,
      timbreId: t.objectId,
      speakerId: t.speakerId
    };
  }

  confirm(): void {
    if (!this.pendingSelection) return;
    this.stopCurrentAudio();
    this.select.emit(this.pendingSelection);
  }

  emitClose(): void {
    this.stopCurrentAudio();
    this.close.emit();
  }

  onMaskClick(_e: MouseEvent): void {
    this.emitClose();
  }

  /** 试听：内存缓存命中直接播；否则调 TTS 合成 */
  preview(source: 'official' | 'cloned', id: string, name: string): void {
    const key = `${source}:${id}`;
    this.previewError = '';

    const cached = this.previewCache.get(key);
    if (cached) {
      this.playAudio(cached);
      return;
    }

    if (this.previewLoadingKey) return; // 已在合成另一条，避免并发
    this.previewLoadingKey = key;

    const body: any = {
      token: TTS_TOKEN,
      text: PREVIEW_TEXT,
      isStream: false,
      audio_params: { format: 'mp3', sample_rate: 24000 }
    };
    if (source === 'official') {
      // _uranus_bigtts 后缀是豆包语音合成模型 2.0，必须使用 seed-tts-2.0 资源。
      // 其它后缀后续可扩展（如 1.0 模型可能需 seed-tts-1.0）。
      body.volcengine_voice_type = id;
      body.x_api_resource_id = id.includes('_uranus_bigtts') ? 'seed-tts-2.0' : 'seed-tts-1.0';
    } else {
      body.timbreId = id;
    }

    this.http.post<any>(TTS_API_URL, body).subscribe({
      next: (res) => {
        this.previewLoadingKey = '';
        if (res?.code === 200 && res?.data?.audioUrl) {
          this.previewCache.set(key, res.data.audioUrl);
          this.playAudio(res.data.audioUrl);
        } else {
          this.previewError = `试听 "${name}" 失败：${res?.error?.message || res?.message || '未知错误'}`;
        }
      },
      error: (err) => {
        this.previewLoadingKey = '';
        this.previewError = `试听 "${name}" 请求失败：${err?.error?.message || err?.message || '网络错误'}`;
      }
    });
  }

  private playAudio(url: string): void {
    this.stopCurrentAudio();
    const audio = new Audio(url);
    audio.play().catch(e => {
      this.previewError = `音频播放失败：${e?.message || e}`;
    });
    this.currentAudio = audio;
  }

  private stopCurrentAudio(): void {
    if (this.currentAudio) {
      try { this.currentAudio.pause(); } catch {}
      this.currentAudio = null;
    }
  }
}