import { Injectable } from '@angular/core';
import type { GeneratedResult, HistoryRecord, RemixVersion } from '../models/app-shell.model';

export interface DigitalHumanPublicationState {
  dhPrompt: string;
  dhResolution: string;
}

export interface DigitalHumanPublicationPayload {
  result: Partial<GeneratedResult>;
  history: Partial<HistoryRecord>;
}

export interface DigitalHumanRemixPublicationInput {
  videoTitle: string;
  videoId: string;
  videoUrl: string;
  prompt: string;
  resolution: '720p' | '1080p';
  durationSeconds: number;
  remixId: string;
}

export interface DigitalHumanRemixVersionInput {
  videoUrl: string;
  thumbnailUrl?: string;
  resolution: '720p' | '1080p';
}

@Injectable({ providedIn: 'root' })
export class DigitalHumanPublicationService {
  build(videoUrl: string, state: DigitalHumanPublicationState, now = new Date()): DigitalHumanPublicationPayload {
    const title = `数字人合成 - ${now.toLocaleString('zh-CN')}`;
    const quality = state.dhResolution === '1080p' ? '1080P' : '720P';
    return {
      result: {
        type: 'video',
        url: videoUrl,
        title,
        quality,
        duration: '数字人视频',
        cost: 0,
        segments: [{ id: 'DH-01', videoUrl, prompt: state.dhPrompt, status: 'completed' }],
        pipelineId: 'digital_human',
      },
      history: {
        keyword: '数字人合成',
        status: 'completed',
        cost: 0,
        duration: '数字人视频',
        styleName: '数字人合成',
        resultUrl: videoUrl,
        quality,
        segmentCount: 1,
        successCount: 1,
      },
    };
  }

  buildRemix(input: DigitalHumanRemixPublicationInput): DigitalHumanPublicationPayload {
    const quality = input.resolution === '1080p' ? '1080P' : '720P';
    const duration = input.durationSeconds > 0 ? `${input.durationSeconds} 秒` : '数字人视频';
    const cost = Math.round(input.durationSeconds * 100) / 100;
    const title = `${input.videoTitle} - 数字人生成`;

    return {
      result: {
        type: 'video',
        url: input.videoUrl,
        title,
        quality,
        duration,
        cost,
        remixId: input.remixId,
        videoId: input.videoId,
        segments: [{ id: 'DH-01', videoUrl: input.videoUrl, prompt: input.prompt, status: 'completed' }],
        pipelineId: 'digital_human',
      },
      history: {
        keyword: title,
        original_video_title: input.videoTitle,
        status: 'completed',
        cost,
        duration,
        remixId: input.remixId,
        videoId: input.videoId,
        styleName: '数字人生成',
        resultUrl: input.videoUrl,
        quality,
        segmentCount: 1,
        successCount: 1,
      },
    };
  }

  buildRemixVersion(input: DigitalHumanRemixVersionInput, now = new Date()): RemixVersion {
    return {
      id: `REMIX-${Date.now()}`,
      style: '数字人生成',
      created_at: now,
      file_path: input.videoUrl,
      thumbnail: input.thumbnailUrl || '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: input.resolution === '1080p' ? 'high' : 'standard',
        effects: ['digital-human'],
      },
    };
  }
}