/**
 * 视频号：作品维度「纯浏览器自动化」→ 导入 work_day_statistics
 *
 * 流程：调用 Python 纯浏览器接口，由 Python 完成：
 * 1. 打开 statistic/post → 点击单篇视频 → 点击近30天
 * 2. 监听 post_list 获取 exportId->objectId
 * 3. 遍历列表，按 exportId 匹配 DB 作品，匹配则点击查看 → 详情页近30天 → 下载表格
 * 4. 解析 CSV 存入 work_day_statistics
 */

import { AppDataSource, PlatformAccount, Work } from '../models/index.js';
import { logger } from '../utils/logger.js';
import { CookieManager } from '../automation/cookie.js';

const PYTHON_SERVICE_URL =
  process.env.PYTHON_PUBLISH_SERVICE_URL || process.env.XHS_SERVICE_URL || 'http://localhost:5005';

function tryDecryptCookieData(cookieData: string | null): string | null {
  if (!cookieData) return null;
  const raw = cookieData.trim();
  if (!raw) return null;
  try {
    return CookieManager.decrypt(raw);
  } catch {
    return raw;
  }
}

/** 将 cookie 转为 Python 接口所需格式（JSON 数组或原始字符串） */
function getCookieForPython(cookieData: string | null): string {
  const raw = tryDecryptCookieData(cookieData);
  if (!raw) return '';
  const s = raw.trim();
  if (!s) return '';
  try {
    JSON.parse(s);
    return s; // 已是 JSON
  } catch {
    return JSON.stringify(
      s
        .split(';')
        .filter(Boolean)
        .map((part) => {
          const idx = part.trim().indexOf('=');
          const name = idx >= 0 ? part.trim().slice(0, idx) : part.trim();
          const value = idx >= 0 ? part.trim().slice(idx + 1) : '';
          return { name, value, domain: '.weixin.qq.com', path: '/' };
        })
    );
  }
}

export class WeixinVideoWorkStatisticsImportService {
  private accountRepository = AppDataSource.getRepository(PlatformAccount);
  private workRepository = AppDataSource.getRepository(Work);

  static async runDailyImport(): Promise<void> {
    const svc = new WeixinVideoWorkStatisticsImportService();
    await svc.runDailyImportForAllWeixinVideoAccounts();
  }

  /** 仅同步指定账号（用于测试），showBrowser=true 时显示浏览器窗口 */
  static async runDailyImportForAccount(accountId: number, showBrowser = false): Promise<void> {
    const svc = new WeixinVideoWorkStatisticsImportService();
    const account = await svc.accountRepository.findOne({
      where: { id: accountId, platform: 'weixin_video' as any },
    });
    if (!account) {
      throw new Error(`未找到视频号账号 id=${accountId}`);
    }
    logger.info(`[WX WorkStats] 单账号同步 accountId=${accountId} showBrowser=${showBrowser}`);
    await svc.importAccountWorksStatistics(account, showBrowser);
  }

  async runDailyImportForAllWeixinVideoAccounts(): Promise<void> {
    const accounts = await this.accountRepository.find({
      where: { platform: 'weixin_video' as any },
    });
    logger.info(`[WX WorkStats] Start import for ${accounts.length} weixin_video accounts`);
    for (const account of accounts) {
      try {
        await this.importAccountWorksStatistics(account);
      } catch (e) {
        logger.error(
          `[WX WorkStats] Account failed. accountId=${account.id} name=${account.accountName || ''}`,
          e
        );
      }
    }
    logger.info('[WX WorkStats] All accounts done');
  }

  private async importAccountWorksStatistics(account: PlatformAccount, showBrowser = false): Promise<void> {
    const cookieForPython = getCookieForPython(account.cookieData);
    if (!cookieForPython) {
      logger.warn(`[WX WorkStats] accountId=${account.id} cookieData 为空或无法解析，跳过`);
      return;
    }

    const works = await this.workRepository.find({
      where: { accountId: account.id, platform: 'weixin_video' as any },
    });
    if (!works.length) {
      logger.info(`[WX WorkStats] accountId=${account.id} 没有作品，跳过`);
      return;
    }

    const worksPayload = works
      .filter((w) => (w.platformVideoId ?? '').trim())
      .map((w) => ({ work_id: w.id, platform_video_id: (w.platformVideoId ?? '').trim() }));

    if (!worksPayload.length) {
      logger.info(`[WX WorkStats] accountId=${account.id} 无有效 platform_video_id，跳过`);
      return;
    }

    logger.info(
      `[WX WorkStats] accountId=${account.id} 调用 Python 纯浏览器同步，共 ${worksPayload.length} 个作品`
    );

    try {
      const pyRes = await fetch(`${PYTHON_SERVICE_URL}/sync_weixin_account_works_daily_stats`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          works: worksPayload,
          cookie: cookieForPython,
          show_browser: showBrowser,
        }),
        signal: AbortSignal.timeout(600_000), // 10 分钟，批量可能较久
      });

      const data = (await pyRes.json().catch(() => ({}))) as {
        success?: boolean;
        error?: string;
        message?: string;
        total_processed?: number;
        total_skipped?: number;
        inserted?: number;
        updated?: number;
        works_updated?: number;
      };

      if (!pyRes.ok) {
        logger.warn(`[WX WorkStats] accountId=${account.id} Python 请求失败: ${pyRes.status} ${data.error || ''}`);
        return;
      }

      if (!data.success) {
        logger.warn(`[WX WorkStats] accountId=${account.id} 同步失败: ${data.error || ''}`);
        return;
      }

      const worksUpdated = data.works_updated ?? 0;
      logger.info(
        `[WX WorkStats] accountId=${account.id} 完成: 处理 ${data.total_processed ?? 0} 个, 跳过 ${data.total_skipped ?? 0} 个, 新增 ${data.inserted ?? 0} 条, 更新 ${data.updated ?? 0} 条` +
          (worksUpdated > 0 ? `, works 表更新 ${worksUpdated} 条` : '')
      );
    } catch (e) {
      logger.error(`[WX WorkStats] accountId=${account.id} 调用 Python 失败:`, e);
      throw e;
    }
  }
}