import fs from 'node:fs/promises';
import path from 'node:path';
import { chromium, type Browser, type Page, type BrowserContext } from 'playwright';
import * as XLSXNS from 'xlsx';
import { AppDataSource, PlatformAccount } from '../models/index.js';
import { BrowserManager } from '../automation/browser.js';
import { logger } from '../utils/logger.js';
import { UserDayStatisticsService } from './UserDayStatisticsService.js';
import { AccountService } from './AccountService.js';
import { getPythonServiceBaseUrl } from './PythonServiceConfigService.js';
import type { ProxyConfig } from '@media-manager/shared';
import { WS_EVENTS } from '@media-manager/shared';
import { wsManager } from '../websocket/index.js';

// xlsx 在 ESM 下可能挂在 default 上；这里做一次兼容兜底
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const XLSX: any = (XLSXNS as any).default ?? (XLSXNS as any);

type PlaywrightCookie = {
  name: string;
  value: string;
  domain?: string;
  path?: string;
  url?: string;
  expires?: number;
  httpOnly?: boolean;
  secure?: boolean;
  sameSite?: 'Lax' | 'None' | 'Strict';
};

function ensureDir(p: string) {
  return fs.mkdir(p, { recursive: true });
}

function normalizeDateText(input: unknown): Date | null {
  if (!input) return null;
  const s = String(input).trim();
  if (!s) return null;

  // 20260115 / 2026-01-15 / 2026/01/15
  const mCompact = s.match(/^(\d{4})(\d{2})(\d{2})$/);
  if (mCompact) {
    const yyyy = Number(mCompact[1]);
    const mm = Number(mCompact[2]);
    const dd = Number(mCompact[3]);
    if (!yyyy || !mm || !dd) return null;
    const d = new Date(yyyy, mm - 1, dd);
    d.setHours(0, 0, 0, 0);
    return d;
  }

  const m1 = s.match(/(\d{4})\D(\d{1,2})\D(\d{1,2})/);
  if (m1) {
    const yyyy = Number(m1[1]);
    const mm = Number(m1[2]);
    const dd = Number(m1[3]);
    if (!yyyy || !mm || !dd) return null;
    const d = new Date(yyyy, mm - 1, dd);
    d.setHours(0, 0, 0, 0);
    return d;
  }

  return null;
}

function parseChineseNumberLike(input: unknown): number | null {
  if (input === null || input === undefined) return null;
  const s = String(input).trim();
  if (!s) return null;
  const plain = s.replace(/,/g, '');
  const wan = plain.match(/^(\d+(\.\d+)?)\s*万$/);
  if (wan) return Math.round(Number(wan[1]) * 10000);
  const yi = plain.match(/^(\d+(\.\d+)?)\s*亿$/);
  if (yi) return Math.round(Number(yi[1]) * 100000000);
  const n = Number(plain.replace(/[^\d.-]/g, ''));
  if (Number.isFinite(n)) return Math.round(n);
  return null;
}

function parseCookiesFromAccount(cookieData: string | null): PlaywrightCookie[] {
  if (!cookieData) return [];
  const raw = cookieData.trim();
  if (!raw) return [];

  // 1) JSON array
  if (raw.startsWith('[') || raw.startsWith('{')) {
    try {
      const parsed = JSON.parse(raw);
      const arr = Array.isArray(parsed) ? parsed : (parsed?.cookies ? parsed.cookies : []);
      if (!Array.isArray(arr)) return [];
      return arr
        .map((c: any) => {
          const name = String(c?.name ?? '').trim();
          const value = String(c?.value ?? '').trim();
          if (!name) return null;
          const domain = c?.domain ? String(c.domain) : undefined;
          const pathVal = c?.path ? String(c.path) : '/';
          const url = !domain ? 'https://baijiahao.baidu.com' : undefined;
          const sameSiteRaw = c?.sameSite;
          const sameSite =
            sameSiteRaw === 'Lax' || sameSiteRaw === 'None' || sameSiteRaw === 'Strict'
              ? sameSiteRaw
              : undefined;

          return {
            name,
            value,
            domain,
            path: pathVal,
            url,
            expires: typeof c?.expires === 'number' ? c.expires : undefined,
            httpOnly: typeof c?.httpOnly === 'boolean' ? c.httpOnly : undefined,
            secure: typeof c?.secure === 'boolean' ? c.secure : undefined,
            sameSite,
          } satisfies PlaywrightCookie;
        })
        .filter(Boolean) as PlaywrightCookie[];
    } catch {
      // fallthrough
    }
  }

  // 2) "a=b; c=d"
  const pairs = raw.split(';').map((p) => p.trim()).filter(Boolean);
  const cookies: PlaywrightCookie[] = [];
  for (const p of pairs) {
    const idx = p.indexOf('=');
    if (idx <= 0) continue;
    const name = p.slice(0, idx).trim();
    const value = p.slice(idx + 1).trim();
    if (!name) continue;
    cookies.push({ name, value, url: 'https://baijiahao.baidu.com' });
  }
  return cookies;
}

async function createBrowserForAccount(proxy: ProxyConfig | null): Promise<{ browser: Browser; shouldClose: boolean }> {
  // 静默同步：默认一律 headless，不弹窗
  // 只有在“引导登录/验证”时（BJ_STORAGE_STATE_BOOTSTRAP=1 且 BJ_IMPORT_HEADLESS=0）才允许 headful
  const allowHeadfulForBootstrap =
    process.env.BJ_STORAGE_STATE_BOOTSTRAP === '1' && process.env.BJ_IMPORT_HEADLESS === '0';
  const headless = !allowHeadfulForBootstrap;
  if (proxy?.enabled) {
    const server = `${proxy.type}://${proxy.host}:${proxy.port}`;
    const browser = await chromium.launch({
      headless,
      proxy: {
        server,
        username: proxy.username,
        password: proxy.password,
      },
      args: ['--no-sandbox', '--disable-setuid-sandbox', '--disable-dev-shm-usage', '--disable-gpu', '--window-size=1920,1080'],
    });
    return { browser, shouldClose: true };
  }
  const browser = await BrowserManager.getBrowser({ headless });
  return { browser, shouldClose: false };
}

function parseBaijiahaoExcel(
  filePath: string
): Map<string, { recordDate: Date } & Record<string, any>> {
  const wb = XLSX.readFile(filePath);
  const result = new Map<string, { recordDate: Date } & Record<string, any>>();

  logger.info(
    `[BJ Import] Excel loaded. file=${path.basename(filePath)} sheets=${wb.SheetNames.join(' | ')}`
  );

  for (const sheetName of wb.SheetNames) {
    const sheet = wb.Sheets[sheetName];
    const rows = XLSX.utils.sheet_to_json<Record<string, any>>(sheet, { defval: '' });

    if (!rows.length) {
      logger.warn(`[BJ Import] Sheet empty. name=${sheetName}`);
      continue;
    }

    const keys = Object.keys(rows[0] || {});
    logger.info(
      `[BJ Import] Sheet parsed. name=${sheetName} rows=${rows.length} keys=${keys.join(',')}`
    );

    // 百家号 Excel 为 GBK 编码，列名在 node 环境下会变成乱码（但列顺序稳定），所以这里按“列位置”做映射：
    // 0: 日期（形如 20260115）
    // 1: 阅读量
    // 2: 点击率
    // 3: 互动率
    // 4: 评论量
    // 5: 评论率（%）
    // 6: 点赞量
    // 7: 点赞率（%）
    // 8: 收藏量
    // 9: 收藏率（%）
    // 10: 分享量
    // 11: 分享率（%）
    // 12: 作品涨粉量
    // 13: 作品涨粉率
    // 14: 作品脱粉量
    // ... 其余列暂不入库

    for (const row of rows) {
      const cols = Object.keys(row || {});
      if (!cols.length) continue;

      const dateVal = (row as any)[cols[0]];
      const d = normalizeDateText(dateVal);
      if (!d) continue;

      const key = `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(
        d.getDate()
      ).padStart(2, '0')}`;
      if (!result.has(key)) result.set(key, { recordDate: d });
      const obj = result.get(key)!;

      const safeGet = (idx: number): any =>
        idx >= 0 && idx < cols.length ? (row as any)[cols[idx]] : undefined;

      // 阅读量 → playCount
      const readCount = parseChineseNumberLike(safeGet(1));
      if (typeof readCount === 'number') (obj as any).playCount = readCount;

      // 点赞量 → likeCount
      const likeCount = parseChineseNumberLike(safeGet(6));
      if (typeof likeCount === 'number') (obj as any).likeCount = likeCount;

      // 评论量 → commentCount
      const commentCount = parseChineseNumberLike(safeGet(4));
      if (typeof commentCount === 'number') (obj as any).commentCount = commentCount;

      // 收藏量 → collectCount
      const collectCount = parseChineseNumberLike(safeGet(8));
      if (typeof collectCount === 'number') (obj as any).collectCount = collectCount;

      // 分享量 → shareCount
      const shareCount = parseChineseNumberLike(safeGet(10));
      if (typeof shareCount === 'number') (obj as any).shareCount = shareCount;

      // 点击率 → coverClickRate（不为 0 时加 %）
      const clickRateRaw = safeGet(2);
      const coverClickRate = formatRateWithPercent(clickRateRaw);
      if (coverClickRate !== '0') (obj as any).coverClickRate = coverClickRate;

      // fans_increase 只看作品涨粉量（不再扣除作品脱粉量）
      const inc = parseChineseNumberLike(safeGet(12));
      if (typeof inc === 'number') {
        (obj as any).fansIncrease = inc;
      }
    }
  }

  return result;
}

/** 比率：不为 0 时加上 %，为 0 或空返回 '0' */
function formatRateWithPercent(v: unknown): string {
  if (v === null || v === undefined) return '0';
  const s = String(v).trim();
  if (!s) return '0';
  const n = Number(s.replace(/,/g, ''));
  if (!Number.isFinite(n) || n === 0) return '0';
  if (s.includes('%')) return s;
  if (n > 0 && n <= 1) return `${(n * 100).toFixed(2)}%`;
  return `${Number(n.toFixed(2))}%`;
}

function formatPercentString(input: unknown): string | null {
  if (input === null || input === undefined) return null;
  const s = String(input).trim();
  if (!s) return null;
  if (s.includes('%')) return s;
  const n = Number(s);
  if (!Number.isFinite(n)) return null;
  // 0.0423 -> 4.23%
  if (n >= 0 && n <= 1) return `${(n * 100).toFixed(2)}%`;
  // 4.23 -> 4.23%
  return `${n.toFixed(2)}%`;
}

function findArrayWithDateLikeField(root: any): { arr: any[]; dateKey: string } | null {
  const seen = new Set<any>();
  const queue: any[] = [root];
  const isDateLike = (v: any) => {
    if (v === null || v === undefined) return false;
    if (typeof v === 'number') return String(v).match(/^\d{8}$/);
    const s = String(v).trim();
    return /^\d{8}$/.test(s) || /^\d{4}[-/]\d{1,2}[-/]\d{1,2}$/.test(s);
  };
  const dateKeyCandidates = ['event_day', 'day', 'date', 'stat_day', 'statDay', 'dt', 'time', 'the_day'];
  const candidates: Array<{ arr: any[]; dateKey: string }> = [];

  while (queue.length) {
    const cur = queue.shift();
    if (!cur || typeof cur !== 'object') continue;
    if (seen.has(cur)) continue;
    seen.add(cur);

    if (Array.isArray(cur)) {
      // 数组元素为对象且含日期字段
      for (const item of cur) {
        if (!item || typeof item !== 'object') continue;
        const keys = Object.keys(item);
        for (const dk of dateKeyCandidates) {
          if (keys.includes(dk) && isDateLike((item as any)[dk])) {
            candidates.push({ arr: cur, dateKey: dk });
            break;
          }
        }
        // 兜底：任意字段像日期
        for (const k of keys) {
          if (isDateLike((item as any)[k])) {
            candidates.push({ arr: cur, dateKey: k });
            break;
          }
        }
      }
    } else {
      for (const v of Object.values(cur)) {
        if (v && typeof v === 'object') queue.push(v);
      }
    }
  }
  if (!candidates.length) return null;
  candidates.sort((a, b) => (b.arr?.length ?? 0) - (a.arr?.length ?? 0));
  return candidates[0]!;
}

function parseBaijiahaoAppStatisticV3(json: any): Map<string, { recordDate: Date } & Record<string, any>> {
  const result = new Map<string, { recordDate: Date } & Record<string, any>>();
  const found = findArrayWithDateLikeField(json);
  if (!found) return result;
  const { arr, dateKey } = found;

  const pickNumber = (obj: any, keys: string[]): number | null => {
    for (const k of keys) {
      if (obj?.[k] === undefined || obj?.[k] === null) continue;
      const n = parseChineseNumberLike(obj[k]);
      if (typeof n === 'number') return n;
    }
    return null;
  };

  const pickString = (obj: any, keys: string[]): string | null => {
    for (const k of keys) {
      if (obj?.[k] === undefined || obj?.[k] === null) continue;
      const s = String(obj[k]).trim();
      if (s) return s;
    }
    return null;
  };

  for (const item of arr) {
    if (!item || typeof item !== 'object') continue;
    const d = normalizeDateText(item[dateKey]);
    if (!d) continue;
    const key = `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
    if (!result.has(key)) result.set(key, { recordDate: d });
    const obj = result.get(key)!;

    // 阅读量 → playCount（百家号 appStatisticV3 使用 view_count）
    const play = pickNumber(item, ['view_count', 'read_cnt', 'readCount', 'read', 'pv', 'view_cnt', 'viewCount', 'views']);
    if (typeof play === 'number') (obj as any).playCount = play;

    // 点赞量 → likeCount（百家号 API 使用 likes_count）
    const like = pickNumber(item, ['likes_count', 'like_cnt', 'praise_cnt', 'praise', 'likeCount', 'likes']);
    if (typeof like === 'number') (obj as any).likeCount = like;

    // 评论量 → commentCount（百家号 API 使用 comment_count）
    const comment = pickNumber(item, ['comment_count', 'comment_cnt', 'commentCount', 'comments']);
    if (typeof comment === 'number') (obj as any).commentCount = comment;

    // 收藏量 → collectCount（百家号 API 字段为 collect_count）
    const collect = pickNumber(item, ['collect_count', 'collect_cnt', 'favorite_cnt', 'fav_cnt', 'collectCount', 'favorites']);
    if (typeof collect === 'number') (obj as any).collectCount = collect;

    // 分享量 → shareCount（百家号 API 使用 share_count）
    const share = pickNumber(item, ['share_count', 'share_cnt', 'shareCount', 'shares']);
    if (typeof share === 'number') (obj as any).shareCount = share;

    // 点击率 → coverClickRate
    const clickRateRaw =
      pickString(item, ['click_rate', 'ctr', 'clickRate']) ??
      (typeof pickNumber(item, ['click_rate', 'ctr', 'clickRate']) === 'number'
        ? String(pickNumber(item, ['click_rate', 'ctr', 'clickRate']))
        : null);
    const clickRate = formatPercentString(clickRateRaw);
    if (clickRate) (obj as any).coverClickRate = clickRate;

    // 作品涨粉量 → fansIncrease（百家号 API 使用 fans_increase / fans_add_cnt）
    const fansInc = pickNumber(item, ['fans_increase', 'fans_add_cnt', 'works_fans_inc', 'worksFansInc', 'content_fans_inc', 'fans_inc', 'fansIncrease']);
    if (typeof fansInc === 'number') (obj as any).fansIncrease = fansInc;
  }

  return result;
}

export class BaijiahaoContentOverviewImportService {
  private accountRepository = AppDataSource.getRepository(PlatformAccount);
  private userDayStatisticsService = new UserDayStatisticsService();

  private downloadDir = path.resolve(process.cwd(), 'tmp', 'baijiahao-content-overview');
  private stateDir = path.resolve(process.cwd(), 'tmp', 'baijiahao-storage-state');

  private getStatePath(accountId: number) {
    return path.join(this.stateDir, `${accountId}.json`);
  }

  private async ensureStorageState(
    account: PlatformAccount,
    cookies: PlaywrightCookie[]
  ): Promise<string | null> {
    const statePath = this.getStatePath(account.id);
    try {
      await fs.access(statePath);
      return statePath;
    } catch {
      // no state
    }

    // 需要你在弹出的浏览器里完成一次登录/验证，然后脚本会自动保存 storageState
    // 启用方式：BJ_IMPORT_HEADLESS=0 且 BJ_STORAGE_STATE_BOOTSTRAP=1
    if (!(process.env.BJ_IMPORT_HEADLESS === '0' && process.env.BJ_STORAGE_STATE_BOOTSTRAP === '1')) {
      return null;
    }

    await ensureDir(this.stateDir);
    logger.warn(
      `[BJ Import] No storageState for accountId=${account.id}. Bootstrapping... 请在弹出的浏览器中完成登录/验证。`
    );

    const { browser, shouldClose } = await createBrowserForAccount(account.proxyConfig);
    try {
      const context = await browser.newContext({
        viewport: { width: 1920, height: 1080 },
        locale: 'zh-CN',
        timezoneId: 'Asia/Shanghai',
      });
      await context.addCookies(cookies as any);
      const page = await context.newPage();
      await page.goto('https://baijiahao.baidu.com/builder/rc/analysiscontent', {
        waitUntil: 'domcontentloaded',
      });

      // 最长等 5 分钟：让你手动完成登录/短信等
      await page
        .waitForFunction(() => {
          const t = document.body?.innerText || '';
          return t.includes('数据中心') || t.includes('内容分析') || t.includes('基础数据');
        }, { timeout: 5 * 60_000 })
        .catch(() => undefined);

      await context.storageState({ path: statePath });
      logger.info(`[BJ Import] storageState saved: ${statePath}`);
      await context.close();
      return statePath;
    } finally {
      if (shouldClose) await browser.close().catch(() => undefined);
    }
  }

  /**
   * 通过 Python 调用 appStatisticV3（登录模式与打开后台一致：使用账号已存 Cookie）
   */
  private async fetchAppStatisticV3ViaPython(
    account: PlatformAccount,
    startDay: string,
    endDay: string
  ): Promise<Record<string, unknown>> {
    const base = (await getPythonServiceBaseUrl()).replace(/\/$/, '');
    const url = `${base}/baijiahao/app_statistic_v3`;
    const cookie = String(account.cookieData || '').trim();
    if (!cookie) throw new Error('百家号账号 cookie 为空，无法调用 Python app_statistic_v3');

    const controller = new AbortController();
    const timeoutId = setTimeout(() => controller.abort(), 30_000);
    try {
      const res = await fetch(url, {
        method: 'POST',
        signal: controller.signal,
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ cookie, start_day: startDay, end_day: endDay }),
      });
      const text = await res.text();
      const data = text ? (JSON.parse(text) as Record<string, unknown>) : {};
      if (!res.ok) {
        const msg = String(data?.errmsg || data?.error || '').trim() || `HTTP ${res.status}`;
        throw new Error(`Python app_statistic_v3 调用失败: ${msg}`);
      }
      return data;
    } finally {
      clearTimeout(timeoutId);
    }
  }

  /**
   * 通过 Python 调用 getFansBasicInfo（登录模式与打开后台一致）
   */
  private async fetchFansBasicInfoViaPython(
    account: PlatformAccount,
    start: string,
    end: string
  ): Promise<Record<string, unknown>> {
    const base = (await getPythonServiceBaseUrl()).replace(/\/$/, '');
    const url = `${base}/baijiahao/fans_basic_info`;
    const cookie = String(account.cookieData || '').trim();
    if (!cookie) throw new Error('百家号账号 cookie 为空，无法调用 Python fans_basic_info');

    const controller = new AbortController();
    const timeoutId = setTimeout(() => controller.abort(), 30_000);
    try {
      const res = await fetch(url, {
        method: 'POST',
        signal: controller.signal,
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ cookie, start, end }),
      });
      const text = await res.text();
      const data = text ? (JSON.parse(text) as Record<string, unknown>) : {};
      if (!res.ok) {
        const msg = String(data?.errmsg || data?.error || '').trim() || `HTTP ${res.status}`;
        throw new Error(`Python fans_basic_info 调用失败: ${msg}`);
      }
      return data;
    } finally {
      clearTimeout(timeoutId);
    }
  }

  /**
   * 统一入口：定时任务与添加账号均调用此方法，执行“内容分析-基础数据-近30天 + 粉丝 getFansBasicInfo”
   */
  static async runDailyImport(): Promise<void> {
    const svc = new BaijiahaoContentOverviewImportService();
    await svc.runDailyImportForAllBaijiahaoAccounts();
  }

  /**
   * 为所有百家号账号导出“数据中心-内容分析-基础数据-近30天”并导入 user_day_statistics
   */
  async runDailyImportForAllBaijiahaoAccounts(): Promise<void> {
    await ensureDir(this.downloadDir);

    const accounts = await this.accountRepository.find({
      where: { platform: 'baijiahao' as any },
    });

    logger.info(`[BJ Import] Start. total_accounts=${accounts.length}`);

    for (const account of accounts) {
      try {
        await this.importAccountLast30Days(account);
      } catch (e) {
        logger.error(
          `[BJ Import] Account failed. accountId=${account.id} name=${account.accountName || ''}`,
          e
        );
      }
    }

    logger.info('[BJ Import] Done.');
  }

  /**
   * 单账号：优先 Python+Node（登录与打开后台一致，使用账号已存 Cookie）；失败则刷新重试一次，再失败则浏览器兜底
   */
  async importAccountLast30Days(account: PlatformAccount, isRetry = false): Promise<void> {
    const cookies = parseCookiesFromAccount(account.cookieData);
    if (!cookies.length) throw new Error('cookieData 为空或无法解析');

    const end = new Date();
    end.setHours(0, 0, 0, 0);
    end.setDate(end.getDate() - 1);
    const start = new Date(end);
    start.setDate(start.getDate() - 29);
    const fmt = (d: Date) =>
      `${d.getFullYear()}${String(d.getMonth() + 1).padStart(2, '0')}${String(d.getDate()).padStart(2, '0')}`;
    const start_day = fmt(start);
    const end_day = fmt(end);

    const chinaTz = 'Asia/Shanghai';
    const toChinaYMD = (date: Date): { y: number; m: number; d: number } => {
      const formatter = new Intl.DateTimeFormat('en-CA', {
        timeZone: chinaTz,
        year: 'numeric',
        month: '2-digit',
        day: '2-digit',
      });
      const parts = formatter.formatToParts(date);
      const get = (type: string) => parts.find((p) => p.type === type)?.value ?? '0';
      return {
        y: parseInt(get('year'), 10),
        m: parseInt(get('month'), 10),
        d: parseInt(get('day'), 10),
      };
    };
    const now = new Date();
    const today = toChinaYMD(now);
    const yesterdayDate = new Date(
      Date.UTC(today.y, today.m - 1, today.d, 0, 0, 0, 0) - 24 * 60 * 60 * 1000
    );
    const startDate = new Date(yesterdayDate.getTime() - 29 * 24 * 60 * 60 * 1000);
    const endYMD = toChinaYMD(yesterdayDate);
    const startYMD = toChinaYMD(startDate);
    const pad = (n: number) => String(n).padStart(2, '0');
    const startStr = `${startYMD.y}${pad(startYMD.m)}${pad(startYMD.d)}`;
    const endStr = `${endYMD.y}${pad(endYMD.m)}${pad(endYMD.d)}`;

    // 优先 Python（登录与打开后台一致：仅用账号已存 Cookie，不启浏览器）
    try {
      const data = await this.fetchAppStatisticV3ViaPython(account, start_day, end_day);
      const errno = typeof data?.errno === 'number' ? data.errno : Number(data?.errno ?? -1);
      if (errno !== 0) throw new Error(data?.errmsg ? String(data.errmsg) : 'appStatisticV3 errno !== 0');
      const perDay = parseBaijiahaoAppStatisticV3(data);
      if (perDay.size === 0) throw new Error('appStatisticV3 解析后无数据');

      let inserted = 0;
      let updated = 0;
      for (const v of perDay.values()) {
        const { recordDate, ...patch } = v;
        const r = await this.userDayStatisticsService.saveStatisticsForDate(account.id, recordDate, patch);
        inserted += r.inserted;
        updated += r.updated;
      }
      logger.info(
        `[BJ Import] basic-data (via Python). accountId=${account.id} days=${perDay.size} inserted=${inserted} updated=${updated}`
      );

      try {
        const fansBody = await this.fetchFansBasicInfoViaPython(account, startStr, endStr);
        const fansErrno = (fansBody as any).errno;
        if (fansErrno === 0 || fansErrno === undefined) {
          const list = this.parseGetFansBasicInfoResponse(fansBody as Record<string, unknown>);
          let fansUpdated = 0;
          for (const { recordDate, fansCount, fansIncrease } of list) {
            const r = await this.userDayStatisticsService.saveStatisticsForDate(
              account.id,
              recordDate,
              { fansCount, fansIncrease }
            );
            fansUpdated += r.inserted + r.updated;
          }
          logger.info(`[BJ Import] Fans data (via Python). accountId=${account.id} days=${list.length} updated=${fansUpdated}`);
        }
      } catch (e) {
        logger.warn(`[BJ Import] Fans via Python failed (non-fatal). accountId=${account.id}`, e instanceof Error ? e.message : e);
      }
      return;
    } catch (pythonError) {
      logger.warn(
        `[BJ Import] Python path failed, fallback to browser. accountId=${account.id}`,
        pythonError instanceof Error ? pythonError.message : pythonError
      );
    }

    if (!isRetry) {
      try {
        const accountService = new AccountService();
        const refreshResult = await accountService.refreshAccount(account.userId, account.id);
        if (!refreshResult.needReLogin) {
          const refreshedAccount = await this.accountRepository.findOne({ where: { id: account.id } });
          if (refreshedAccount) {
            logger.info(`[BJ Import] Account ${account.id} refreshed, retrying import...`);
            return await this.importAccountLast30Days(refreshedAccount, true);
          }
        }
      } catch (refreshError) {
        logger.error(`[BJ Import] Account ${account.id} refresh failed:`, refreshError);
      }
    }

    // 浏览器兜底：原有逻辑不变
    const { browser, shouldClose } = await createBrowserForAccount(account.proxyConfig);
    try {
      const statePath = await this.ensureStorageState(account, cookies);
      const context = await browser.newContext({
        acceptDownloads: true,
        viewport: { width: 1920, height: 1080 },
        locale: 'zh-CN',
        timezoneId: 'Asia/Shanghai',
        userAgent:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
        ...(statePath ? { storageState: statePath } : {}),
      });
      context.setDefaultTimeout(60_000);
      if (!statePath) await context.addCookies(cookies as any);

      const page = await context.newPage();
      await page.goto('https://baijiahao.baidu.com/builder/rc/analysiscontent', { waitUntil: 'domcontentloaded' });
      await page.waitForTimeout(1500);

      if (page.url().includes('passport') || page.url().includes('login')) {
        if (!isRetry) {
          logger.info(`[BJ Import] Login expired for account ${account.id}, attempting refresh...`);
          await context.close();
          if (shouldClose) await browser.close();
          try {
            const accountService = new AccountService();
            const refreshResult = await accountService.refreshAccount(account.userId, account.id);
            if (refreshResult.needReLogin) {
              logger.warn(`[BJ Import] Account ${account.id} refresh failed, still needs re-login`);
              throw new Error('未登录/需要重新登录（跳转到登录页）');
            }
            const refreshedAccount = await this.accountRepository.findOne({ where: { id: account.id } });
            if (!refreshedAccount) throw new Error('账号刷新后未找到');
            return await this.importAccountLast30Days(refreshedAccount, true);
          } catch (refreshError) {
            logger.error(`[BJ Import] Account ${account.id} refresh failed:`, refreshError);
            throw new Error('未登录/需要重新登录（跳转到登录页）');
          }
        }
        throw new Error('未登录/需要重新登录（跳转到登录页）');
      }

      const bodyText = (await page.textContent('body').catch(() => '')) || '';
      if (bodyText.includes('暂无数据') || bodyText.includes('无权访问')) {
        await this.accountRepository.update(account.id, { status: 'expired' as any });
        wsManager.sendToUser(account.userId, WS_EVENTS.ACCOUNT_UPDATED, {
          account: { id: account.id, status: 'expired', platform: 'baijiahao' },
        });
        wsManager.sendToUser(account.userId, WS_EVENTS.SYSTEM_MESSAGE, {
          level: 'warning',
          message: `百家号账号「${account.accountName || account.accountId || account.id}」暂无数据看板访问权限，请到百家号后台检查数据权限。`,
          platform: 'baijiahao',
          accountId: account.id,
        });
        throw new Error('百家号数据看板暂无访问权限/暂无数据，已标记 expired 并通知用户');
      }

      await page.getByText('数据中心', { exact: false }).first().click().catch(() => undefined);
      await page.getByText('内容分析', { exact: false }).first().click().catch(() => undefined);
      await page.getByText('基础数据', { exact: false }).first().click().catch(() => undefined);
      try {
        const trigger = page.getByText(/近\d+天?/, { exact: false }).first();
        if ((await trigger.count()) > 0) await trigger.click().catch(() => undefined);
        const thirtyDay =
          (await page.getByText('近30天', { exact: true }).first().count()) > 0
            ? page.getByText('近30天', { exact: true }).first()
            : page.getByText('近30日', { exact: false }).first();
        await thirtyDay.click().catch(() => undefined);
        await page.waitForTimeout(5000);
      } catch (e) {
        logger.warn(`[BJ Import] Unable to switch to 近30天. accountId=${account.id}`, e);
      }

      let perDay = new Map<string, { recordDate: Date } & Record<string, any>>();
      let inserted = 0;
      let updated = 0;
      const tryFetchApi = async () => {
        const apiUrl = `https://baijiahao.baidu.com/author/eco/statistics/appStatisticV3?type=all&start_day=${start_day}&end_day=${end_day}&stat=0&special_filter_days=30`;
        const res = await (context as any).request.get(apiUrl, {
          headers: { Referer: 'https://baijiahao.baidu.com/builder/rc/analysiscontent' },
        });
        if (!res.ok()) throw new Error(`appStatisticV3 http ${res.status()}`);
        const json = await res.json().catch(() => null);
        if (!json) throw new Error('appStatisticV3 json parse failed');
        if (process.env.BJ_IMPORT_DEBUG === '1') {
          const debugPath = path.join(this.downloadDir, `appStatisticV3_response_${account.id}_${Date.now()}.json`);
          await ensureDir(this.downloadDir);
          await fs.writeFile(debugPath, JSON.stringify(json, null, 2), 'utf-8');
          logger.info(`[BJ Import] DEBUG: appStatisticV3 原始响应已写入 ${debugPath}`);
        }
        return parseBaijiahaoAppStatisticV3(json);
      };
      try {
        perDay = await tryFetchApi();
      } catch (e) {
        logger.warn(`[BJ Import] appStatisticV3 failed, fallback to Excel. accountId=${account.id}`, e);
      }

      let filePath: string | null = null;
      if (perDay.size === 0) {
        const [download] = await Promise.all([
          page.waitForEvent('download', { timeout: 60_000 }),
          page.getByText('导出数据', { exact: true }).first().click(),
        ]);
        filePath = path.join(this.downloadDir, `${account.id}_${Date.now()}_${download.suggestedFilename()}`);
        await download.saveAs(filePath);
        perDay = parseBaijiahaoExcel(filePath);
      } else if (perDay.size < 20) {
        const [download] = await Promise.all([
          page.waitForEvent('download', { timeout: 60_000 }),
          page.getByText('导出数据', { exact: true }).first().click(),
        ]);
        filePath = path.join(this.downloadDir, `${account.id}_${Date.now()}_${download.suggestedFilename()}`);
        await download.saveAs(filePath);
        const excelMap = parseBaijiahaoExcel(filePath);
        for (const [k, v] of excelMap.entries()) {
          if (!perDay.has(k)) perDay.set(k, v);
        }
      }

      try {
        for (const v of perDay.values()) {
          const { recordDate, ...patch } = v;
          const r = await this.userDayStatisticsService.saveStatisticsForDate(account.id, recordDate, patch);
          inserted += r.inserted;
          updated += r.updated;
        }
        logger.info(`[BJ Import] basic-data (browser). accountId=${account.id} days=${perDay.size} inserted=${inserted} updated=${updated}`);
      } finally {
        if (filePath && process.env.KEEP_BJ_XLSX !== 'true') await fs.unlink(filePath).catch(() => undefined);
      }

      try {
        await this.importFansDataByApi(context, account);
      } catch (e) {
        logger.warn(`[BJ Import] Fans import failed (non-fatal). accountId=${account.id}`, e instanceof Error ? e.message : e);
      }

      await context.close();
    } finally {
      if (shouldClose) await browser.close().catch(() => undefined);
    }
  }

  /**
   * 粉丝数据：直接请求 getFansBasicInfo（近30天 = 中国时区昨天为结束，往前推 30 天），不打开页面
   * sum_fans_count → fans_count，new_fans_count → fans_increase
   * 使用中国时区计算日期，避免服务器非东八区时只拿到部分天数
   */
  private async importFansDataByApi(context: BrowserContext, account: PlatformAccount): Promise<void> {
    const chinaTz = 'Asia/Shanghai';
    const toChinaYMD = (date: Date): { y: number; m: number; d: number } => {
      const formatter = new Intl.DateTimeFormat('en-CA', { timeZone: chinaTz, year: 'numeric', month: '2-digit', day: '2-digit' });
      const parts = formatter.formatToParts(date);
      const get = (type: string) => parts.find((p) => p.type === type)?.value ?? '0';
      return { y: parseInt(get('year'), 10), m: parseInt(get('month'), 10), d: parseInt(get('day'), 10) };
    };
    const now = new Date();
    const today = toChinaYMD(now);
    const yesterdayDate = new Date(Date.UTC(today.y, today.m - 1, today.d, 0, 0, 0, 0) - 24 * 60 * 60 * 1000);
    const startDate = new Date(yesterdayDate.getTime() - 29 * 24 * 60 * 60 * 1000);
    const endYMD = toChinaYMD(yesterdayDate);
    const startYMD = toChinaYMD(startDate);
    const pad = (n: number) => String(n).padStart(2, '0');
    const startStr = `${startYMD.y}${pad(startYMD.m)}${pad(startYMD.d)}`;
    const endStr = `${endYMD.y}${pad(endYMD.m)}${pad(endYMD.d)}`;
    const apiUrl = `https://baijiahao.baidu.com/author/eco/statistics/getFansBasicInfo?start=${startStr}&end=${endStr}&fans_type=new%2Csum&sort=asc&is_page=0&show_type=chart`;

    logger.info(`[BJ Import] getFansBasicInfo range (China). accountId=${account.id} start=${startStr} end=${endStr}`);

    let body: Record<string, unknown> | null = null;
    try {
      const res = await (context as any).request.get(apiUrl, {
        headers: { Referer: 'https://baijiahao.baidu.com/builder/rc/analysisfans/basedata' },
      });
      if (res.ok()) body = await res.json().catch(() => null);
    } catch (e) {
      logger.warn(`[BJ Import] getFansBasicInfo request failed. accountId=${account.id}`, e);
      return;
    }

    if (!body || typeof body !== 'object') {
      logger.warn(`[BJ Import] getFansBasicInfo response not valid JSON, skip. accountId=${account.id}`);
      return;
    }
    const errno = (body as any).errno;
    if (errno !== 0 && errno !== undefined) {
      logger.warn(`[BJ Import] getFansBasicInfo errno=${errno}, skip. accountId=${account.id}`);
      return;
    }

    const list = this.parseGetFansBasicInfoResponse(body);
    if (!list.length) {
      logger.info(`[BJ Import] No fans data from getFansBasicInfo. accountId=${account.id}`);
      return;
    }
    const firstDay = list[0]?.recordDate;
    const lastDay = list[list.length - 1]?.recordDate;
    const fmtDay = (d: Date) => (d ? `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}` : '');
    logger.info(`[BJ Import] getFansBasicInfo response. accountId=${account.id} count=${list.length} first=${fmtDay(firstDay)} last=${fmtDay(lastDay)}`);

    let updated = 0;
    for (const { recordDate, fansCount, fansIncrease } of list) {
      const r = await this.userDayStatisticsService.saveStatisticsForDate(account.id, recordDate, {
        fansCount,
        fansIncrease,
      });
      updated += r.inserted + r.updated;
    }
    logger.info(`[BJ Import] Fans data imported. accountId=${account.id} days=${list.length} updated=${updated}`);
  }

  /**
   * 解析 getFansBasicInfo 接口返回，提取 (recordDate, fansCount, fansIncrease) 列表
   * sum_fans_count → fans_count，new_fans_count → fans_increase；"--" 或无效值跳过或按 0 处理
   */
  private parseGetFansBasicInfoResponse(
    body: Record<string, unknown>
  ): Array<{ recordDate: Date; fansCount: number; fansIncrease: number }> {
    const list: Array<{ recordDate: Date; fansCount: number; fansIncrease: number }> = [];
    const data = body.data as Record<string, unknown> | undefined;
    if (!data || typeof data !== 'object') return list;

    const arr = data.list as unknown[] | undefined;
    if (!Array.isArray(arr)) return list;

    for (const item of arr) {
      if (!item || typeof item !== 'object') continue;
      const o = item as Record<string, unknown>;
      const dayRaw = o.day;
      if (dayRaw == null) continue;
      const dayStr = String(dayRaw).trim();
      if (!/^\d{8}$/.test(dayStr)) continue;
      const d = normalizeDateText(dayStr);
      if (!d) continue;

      const sumRaw = o.sum_fans_count;
      const newRaw = o.new_fans_count;
      const toNum = (v: unknown): number => {
        if (v === null || v === undefined) return 0;
        if (typeof v === 'number' && Number.isFinite(v)) return Math.max(0, Math.round(v));
        const s = String(v).trim();
        if (s === '' || s === '--') return 0;
        const n = Number(s.replace(/,/g, ''));
        return Number.isFinite(n) ? Math.max(0, Math.round(n)) : 0;
      };
      const fansCount = toNum(sumRaw);
      const fansIncrease = toNum(newRaw);

      list.push({ recordDate: d, fansCount, fansIncrease });
    }
    return list;
  }
}