// _worker.js
export default {
  async fetch(request, env, ctx) {
    const url = new URL(request.url);
    
    // ===== COOKIE FIXO =====
    const COOKIE = 'cf_clearance=123GlC3xQFsdHwwEi6u_Nk.awEvOJuRT8S3nPh27N68-1774469116-1.2.1.1-PheQQg2LVwrLgup17MwoNkSB_g.lyiDp4rxdlhET.Gi1VpX7gzyqr50DvX9GtgJHgB7c8wwEZhqPbLpRKH94ZovRwI8qdNPKJhye9_BsgGoKEwFjlU3OusrTpcBAEowaHZTVy1D2rS7Fudj6YqTA7K.Y54jdzPaXlNIby9Yr6kIOkCN_NN4sgVIgzZiXillANHUbROqmJqjJufILkrVfVARWZ5dXbnCsoByP5IVQsj.1pd6f2cnyxiIrIWGGsfSBO';
    
    // ===== ROTA DE DIAGNÓSTICO =====
    if (url.pathname === '/diagnostico') {
      return new Response(`Cookie ativo: ${COOKIE.substring(0, 100)}...`, { 
        headers: { 'Content-Type': 'text/plain; charset=utf-8' } 
      });
    }
    
    // ===== PROXY NORMAL =====
    let targetUrl = url.searchParams.get('url');
    if (!targetUrl && url.search) {
      const params = new URLSearchParams(url.search);
      targetUrl = params.get('url');
    }
    if (!targetUrl && request.url.includes('url=')) {
      targetUrl = request.url.split('url=')[1];
    }

    if (!targetUrl) {
      return new Response(`Proxy ativo. Use ?url= para passar o link. /diagnostico para ver cookie.`, { 
        status: 200, 
        headers: { 'Content-Type': 'text/plain; charset=utf-8' } 
      });
    }

    try {
      targetUrl = decodeURIComponent(targetUrl).trim();
    } catch (e) {}

    if (!targetUrl.startsWith('http')) {
      return new Response("Erro: URL inválida", { status: 400 });
    }

    // ===== HEADERS COM USER-AGENT E COOKIE =====
    const headers = {
      'User-Agent': 'Mozilla/5.0 (Android 13; Mobile; rv:128.0) Gecko/128.0 Firefox/128.0',
      'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
      'Accept-Language': 'pt-BR,pt;q=0.8,en-US;q=0.5,en;q=0.3',
      'Accept-Encoding': 'gzip, deflate, br',
      'Connection': 'keep-alive',
      'Upgrade-Insecure-Requests': '1',
      'Sec-Fetch-Dest': 'document',
      'Sec-Fetch-Mode': 'navigate',
      'Sec-Fetch-Site': 'none',
      'Sec-Fetch-User': '?1',
      'Cache-Control': 'max-age=0',
      'Referer': 'https://mangalivre.tv/',
      'Origin': 'https://mangalivre.tv',
      'Cookie': COOKIE
    };

    // ===== CACHE =====
    const cache = caches.default;
    const cacheKey = new Request(url.toString(), { method: 'GET', headers: {} });
    const cachedResponse = await cache.match(cacheKey);
    
    if (cachedResponse) {
      const responseWithHeader = new Response(cachedResponse.body, cachedResponse);
      responseWithHeader.headers.set('X-Cache-Status', 'HIT');
      return responseWithHeader;
    }

    try {
      const response = await fetch(targetUrl, { 
        method: 'GET',
        headers: headers,
        redirect: "follow"
      });

      const newHeaders = new Headers(response.headers);
      newHeaders.set('Access-Control-Allow-Origin', '*');
      newHeaders.set('X-Cache-Status', 'MISS');
      newHeaders.set('Cache-Control', 'public, max-age=3600');

      const finalResponse = new Response(response.body, {
        status: response.status,
        headers: newHeaders
      });

      ctx.waitUntil(cache.put(cacheKey, finalResponse.clone()));
      return finalResponse;

    } catch (e) {
      return new Response(`Erro ao buscar: ${e.message}`, { status: 500 });
    }
  }
};