export default {
  async fetch(request) {
    const targetBase = "http://161.248.38.40:8000";
    const url = new URL(request.url);

    const targetUrl = targetBase + url.pathname + url.search;

    const response = await fetch(targetUrl);

    const contentType = response.headers.get("content-type") || "";

    // If m3u8 playlist, rewrite segment URLs
    if (contentType.includes("application/vnd.apple.mpegurl") || url.pathname.endsWith(".m3u8")) {
      let text = await response.text();

      // Rewrite relative URLs
      text = text.replace(/(?!#)(^.*\.m3u8.*$)/gm, (match) => {
        if (match.startsWith("http")) return match;
        return url.origin + match;
      });

      text = text.replace(/(?!#)(^.*\.ts.*$)/gm, (match) => {
        if (match.startsWith("http")) return match;
        return url.origin + match;
      });

      return new Response(text, {
        headers: {
          "Content-Type": "application/vnd.apple.mpegurl",
          "Access-Control-Allow-Origin": "*"
        }
      });
    }

    // For .ts segments
    return new Response(response.body, {
      headers: {
        "Content-Type": contentType,
        "Access-Control-Allow-Origin": "*"
      }
    });
  }
};