fix(wallpaper): proxy Bing images through Worker

worker/index.js

@@ -0,0 +1,40 @@
+import { addonsJs, indexHtml } from "./assets.js";
+
+const BING_ARCHIVE = "https://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US";
+
+async function bingMetadata() {
+  const response = await fetch(BING_ARCHIVE, { headers: { accept: "application/json" } });
+  if (!response.ok) throw new Error(`Bing metadata request failed: ${response.status}`);
+  const image = (await response.json()).images?.[0];
+  if (!image?.url) throw new Error("Bing did not return today's image");
+  return {
+    title: image.copyright || "Bing Daily Image",
+    url: new URL(image.url, "https://www.bing.com").toString(),
+  };
+}
+
+function headers(type, cache = "public, max-age=3600") {
+  return { "content-type": type, "cache-control": cache };
+}
+
+export default {
+  async fetch(request) {
+    const url = new URL(request.url);
+    try {
+      if (url.pathname === "/api/bing-wallpaper") {
+        return Response.json(await bingMetadata(), { headers: { "cache-control": "public, max-age=3600" } });
+      }
+      if (url.pathname === "/api/bing-wallpaper-image") {
+        const image = await bingMetadata();
+        const response = await fetch(image.url);
+        if (!response.ok) throw new Error(`Bing image request failed: ${response.status}`);
+        return new Response(response.body, { headers: headers(response.headers.get("content-type") || "image/jpeg", "public, max-age=21600") });
+      }
+    } catch (error) {
+      return Response.json({ error: "Bing wallpaper is temporarily unavailable", detail: String(error) }, { status: 502 });
+    }
+    if (url.pathname === "/addons.js") return new Response(addonsJs, { headers: headers("application/javascript; charset=utf-8") });
+    if (url.pathname === "/" || url.pathname === "/index.html") return new Response(indexHtml, { headers: headers("text/html; charset=utf-8", "no-cache") });
+    return new Response("Not found", { status: 404 });
+  },
+};