fix: improve error handling for iTunes API response and update cover not found response

src/download_cover.ts

@@ -40,14 +40,20 @@ export async function itunes_cover_url(artist: string, album: string) {
     .replace(/[-_,"':;|]/g, " ")
     .toLowerCase();
 
-  const apple_music_results = await fetch("https://itunes.apple.com/search", {
+  const response = await fetch("https://itunes.apple.com/search", {
     body: new URLSearchParams({
       term: query,
       entity: "song",
       limit: "10",
     }),
     method: "POST",
-  }).then((res) => res.json());
+  });
+
+  if (!response.ok) {
+    throw new Error(`iTunes API failed with status ${response.status}`);
+  }
+
+  const apple_music_results = await response.json();
 
   for (let result of apple_music_results.results) {
     if (artist == result.artistName.toLowerCase()) {

src/index.ts

@@ -19,7 +19,7 @@ app.get("/cover/:artist/:album/:id", ({ params: { artist, album, id } }) =>
   get_image_from_server(artist, album, id),
 );
 
-app.listen({ hostname: '0.0.0.0', port: 3000 }, ({ hostname, port }) => {
+app.listen({ hostname: "0.0.0.0", port: 3000 }, ({ hostname, port }) => {
   console.log(`🦊 Elysia is running at ${hostname}:${port}`);
 });
 
@@ -74,7 +74,7 @@ async function get_image_from_server(
           first_error,
           secong_error,
         );
-        throw Error("cover not found");
+        return new Response("Cover not found", { status: 404 });
       }
     }
   }