import db from '../config/database';
import { AIService } from './AIService';
import { AuditService } from './AuditService';

/**
 * [BIZ_MKT_10] 竞品广告素材深度模仿与差异化生成
 * 负责分析竞品爆款广告（TikTok/FB/IG），并利用 AI 模仿其风格同时加入差异化卖点
 */
export class AdMimicryService {
  /**
   * 基于竞品素材生成差异化新素材
   */
  static async generateMimicry(
    tenantId: string,
    competitorAdId: string,
    originalContent: string,
    traceId: string
  ): Promise<string> {
    // 1. 风格提取 (模拟调用 AIService 分析竞品素材风格)
    const style = await AIService.extractAdStyle(originalContent);
    
    // 2. 差异化逻辑 (注入租户产品的独有优势)
    const differentiation = "Fast 2-day global shipping & Eco-friendly materials";
    
    // 3. 生成新素材内容 (模拟基于 AI 的风格迁移生成)
    const mimickedContent = await AIService.generateAdFromStyle(style, differentiation);

    // 4. 持久化记录
    await db('cf_ad_mimicry').insert({
      tenant_id: tenantId,
      competitor_ad_id: competitorAdId,
      original_content: originalContent,
      mimicked_content: mimickedContent,
      differentiation_logic: differentiation,
      similarity_score: 0.85 // 模仿相似度指标
    });

    // 5. 审计记录
    await AuditService.log({
      tenant_id: tenantId,
      action: 'AD_MIMICRY_GENERATED',
      target_type: 'AD_CREATIVE',
      target_id: competitorAdId,
      trace_id: traceId,
      new_data: JSON.stringify({ mimickedContent }),
      metadata: JSON.stringify({ originalAdId: competitorAdId, style })
    });

    return mimickedContent;
  }

  /**
   * 获取租户所有广告模仿任务
   */
  static async getMimicryHistory(tenantId: string) {
    return await db('cf_ad_mimicry')
      .where({ tenant_id: tenantId })
      .orderBy('created_at', 'desc');
  }
}
