// rss-robot-cf —— 主入口
// 路由表 + Cron scheduled。迁自 EdgeOne 的 api/*.js 各端点 + check-feeds.js 抓取逻辑。

import type { Env } from './types';
import { runCron } from './lib/rss/cron';

/** 每小时抓取的源数（66 源 ÷ 22 ≈ 3 小时跑完一轮） */
const RSS_BATCH = 22;
import * as FeedsRoute from './routes/rss/feeds';
import * as LinksRoute from './routes/rss/links';
import { results, articles } from './routes/rss/results';
import { auth, health } from './routes/rss/misc';
import { favicon, update, proxy, cronRun, notifyMail, proxyHealth, deployStatusGet, deployStatusPost, deployNotify } from './routes/rss/tools';
import { linkApply, linkApplyList, linkApplyReview } from './routes/rss/links';
import * as WechatRoute from './routes/rss/wechat';
import { randomImage, artalkCommenter } from './routes/rss/media';
import * as GreetingRoute from './routes/rss/greeting';
import { respond } from './lib/rss/util';

const CORS = {
  'Access-Control-Allow-Origin': '*',
  'Access-Control-Allow-Methods': 'GET, POST, DELETE, OPTIONS',
  'Access-Control-Allow-Headers': 'Content-Type, Authorization',
};

export const RssApi = {
  // 每小时轮转抓取：每次抓 RSS_BATCH 个源，游标存在 KV（rss_cursor），
  // 三四个小时覆盖全部 66 个源。免费版单次调用限 50 subrequest，
  // 所以批量不能大；连续失败的源会进入退避期被跳过（见 cron.ts）。
  async scheduled(_controller: ScheduledController, env: Env, _ctx: ExecutionContext): Promise<void> {
    await runCron(env, { limit: RSS_BATCH, rotate: true });
  },

  async fetch(request: Request, env: Env, _ctx: ExecutionContext): Promise<Response> {
    const url = new URL(request.url);
    const path = url.pathname;

    // CORS 预检（所有端点）
    if (request.method === 'OPTIONS') {
      return new Response(null, { status: 204, headers: CORS });
    }

    // 微信验证文件（MP_verify_xxx.txt）
    if (path.startsWith('/MP_verify_') && path.endsWith('.txt')) {
      const code = path.replace('/MP_verify_', '').replace('.txt', '');
      return new Response(code, { status: 200, headers: { 'Content-Type': 'text/plain; charset=utf-8' } });
    }

    // 健康检查
    if (path === '/api/health') return health(request, env);

    // 管理页（/feed 订阅源管理）与首页登录门
    if (path === '/feed') {
      const resp = await env.ASSETS!.fetch(new URL('/feed.html', request.url));
      if (resp.ok) return new Response(resp.body, { headers: { 'Content-Type': 'text/html; charset=utf-8' } });
      return respond({ error: 'feed.html not found' }, 404);
    }

    // 路由分发
    try {
      switch (path) {
        case '/api/feeds':
          return FeedsRoute.onRequest(request, env);
        case '/api/links':
          return LinksRoute.onRequest(request, env);
        case '/api/results':
          return results(request, env);
        case '/api/articles':
          return articles(request, env);
        case '/api/auth':
          return auth(request, env);
        case '/api/favicon':
          return favicon(request, env);
        case '/api/update':
          return update(request, env);
        case '/api/cron/run':
          return cronRun(request, env);
        case '/api/deploy-status':
          return request.method === 'POST' ? deployStatusPost(request, env) : deployStatusGet(request, env);
        case '/api/deploy-notify':
          return deployNotify(request, env);
        case '/api/link-apply':
          return linkApply(request, env);
        case '/api/link-apply/list':
          return linkApplyList(request, env);
        case '/api/link-apply/review':
          return linkApplyReview(request, env);
        case '/api/proxy':
          return proxy(request, env);
        case '/api/notify-mail':
          return notifyMail(request, env);
        case '/api/proxy-health':
          return proxyHealth(request, env);
        case '/api/wechat-material':
          return WechatRoute.onRequest(request, env);
        case '/api/random-image':
          return randomImage(request, env);
        case '/api/artalk/commenter':
          return artalkCommenter(request, env);
        case '/api/ai/greeting':
          return GreetingRoute.onRequest(request, env);
        default:
          return respond({ error: 'not found', path }, 404);
      }
    } catch (err) {
      return respond({ error: (err as Error).message }, 500);
    }
  },
};