Code js upload ảnh sử dụng API Imgur (debug)

addEventListener("fetch", event => {
 event.respondWith(handleRequest(event.request));
});
async function handleRequest(request) {
 // Thêm CORS headers cho mọi response
 const corsHeaders = {
 "Access-Control-Allow-Origin": "*",
 "Access-Control-Allow-Methods": "POST, OPTIONS",
 "Access-Control-Allow-Headers": "Content-Type",
 };
 // Handle preflight OPTIONS
 if (request.method === "OPTIONS") {
 return new Response(null, { headers: corsHeaders });
 }
 if (request.method !== "POST") {
 return new Response(JSON.stringify({ error: "Method Not Allowed" }), {
 status: 405,
 headers: { "Content-Type": "application/json", ...corsHeaders },
 });
 }
 const url = new URL(request.url);
 const clientId = url.searchParams.get("clientId");
 if (!clientId) {
 return new Response(JSON.stringify({ success: false, error: "Missing clientId query parameter" }), {
 status: 400,
 headers: { "Content-Type": "application/json", ...corsHeaders },
 });
 }
 const formData = await request.formData();
 const image = formData.get("image");
 if (!image) {
 return new Response(JSON.stringify({ success: false, error: "No image provided" }), {
 status: 400,
 headers: { "Content-Type": "application/json", ...corsHeaders },
 });
 }
 const imgurForm = new FormData();
 imgurForm.append("image", image);
 const userAgent = request.headers.get("User-Agent") || "Mozilla/5.0";
 const imgurResponse = await fetch("https://api.imgur.com/3/image", {
 method: "POST",
 body: imgurForm,
 headers: {
 "Authorization": `Client-ID ${clientId}`,
 "User-Agent": userAgent,
 },
 });
 const data = await imgurResponse.json();
 // Forward nguyên response từ Imgur (kể cả lỗi)
 return new Response(JSON.stringify(data), {
 status: imgurResponse.status,
 headers: { 
 "Content-Type": "application/json",
 ...corsHeaders 
 },
 });
}

https://pagecuaban.workers.dev?clientId=...