import type { Request, Response } from 'express';
import { AppError } from '../../../../shared/errors/app-error.js';
import { sendSuccess } from '../../../../shared/http/response.js';
import { checkParseDatabase } from '../../../../shared/db/parse-health.service.js';
import { reconcileGroupCatalog } from '../services/sync.service.js';
import { backfillGroupChatsFromMessages } from '../services/groups.service.js';
import { getQiWeConfig } from '../services/qiwe-api.service.js';

export async function handleSyncGroups(_req: Request, res: Response): Promise<void> {
  const config = getQiWeConfig();
  if (!config.token || !config.guid) {
    throw new AppError(500, 'MISSING_CONFIG', '请在 .env 中配置 QIWE_TOKEN 和 QIWE_GUID');
  }

  const dbBefore = await checkParseDatabase();
  if (!dbBefore.connected) {
    throw new AppError(503, 'DB_UNAVAILABLE', dbBefore.error || '无法连接 Parse 数据库', { database: dbBefore });
  }

  const catalog = await reconcileGroupCatalog();
  const dbAfter = await checkParseDatabase();

  sendSuccess(res, { catalog, sync: catalog.rooms, database: dbAfter });
  if (catalog.rooms.errors.length > 0) {
    console.warn(`[Sync] 部分群写入失败: ${catalog.rooms.errors.length} 条`);
  }
}

/** 按 Message 表中的 roomId 补全 GroupChat，不调用企微接口 */
export async function handleBackfillGroupsFromMessages(_req: Request, res: Response): Promise<void> {
  const config = getQiWeConfig();
  if (!config.guid) {
    throw new AppError(500, 'MISSING_CONFIG', '请在 .env 中配置 QIWE_GUID');
  }
  const created = await backfillGroupChatsFromMessages(config.guid);
  sendSuccess(res, { created });
}