Aurora SpotiRip desktop and web app

- Spotify playlist, library, album and artist browsing with in-app playback
- Song, playlist and album downloads via spotdl with YouTube and Bandcamp fallbacks
- Electron desktop app (castLabs Widevine) with a permanent sidebar layout
- Linux and Windows packaging scripts

endpoints/spotify-download_POST.ts

@@ -0,0 +1,21 @@
+import superjson from "superjson";
+import { schema, type OutputType } from "./spotify-download_POST.schema";
+import { appendSetCookies } from "../helpers/spotifyServer";
+import { jsonError, requireDownloadAccess, startDownloadJob } from "../helpers/downloadJobs";
+
+export async function handle(request: Request) {
+  try {
+    const access = await requireDownloadAccess(request);
+    if (access.error) return access.error;
+
+    const parsed = schema.safeParse(superjson.parse(await request.text()));
+    if (!parsed.success) return jsonError(parsed.error.issues[0]?.message || "Invalid download request.", 400);
+
+    const job = startDownloadJob({ ownerId: access.userId, ...parsed.data });
+    const headers = new Headers({ "Content-Type": "application/json", "Cache-Control": "no-store" });
+    appendSetCookies(headers, access.setCookies);
+    return new Response(superjson.stringify({ jobId: job.id } satisfies OutputType), { headers });
+  } catch (error) {
+    return jsonError(error instanceof Error ? error.message : "Unable to start the download.", 503);
+  }
+}