Initial OSS scaffold from Songs2VID (pre-strip)

app/api/upload/route.ts

@@ -0,0 +1,42 @@
+import { NextRequest, NextResponse } from "next/server";
+import { PremiumRequiredError, premiumRequiredResponse } from "@/lib/entitlements";
+import { saveUploadedFile, type UploadFileType } from "@/lib/jobs/create-job";
+import { getSessionUser } from "@/lib/session";
+
+export const maxDuration = 120;
+
+export async function POST(req: NextRequest) {
+  const user = await getSessionUser();
+  if (!user) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+
+  const formData = await req.formData();
+  const file = formData.get("file") as File | null;
+  const type = formData.get("type") as string | null;
+  const sessionKey = (formData.get("session") as string | null)?.trim() || undefined;
+
+  if (
+    !file ||
+    !type ||
+    (type !== "image" && type !== "audio" && type !== "logo" && type !== "font")
+  ) {
+    return NextResponse.json(
+      { error: "Missing file or type (image | audio | logo | font)" },
+      { status: 400 },
+    );
+  }
+
+  try {
+    const result = await saveUploadedFile(user.id, file, type as UploadFileType, user.plan, {
+      sessionKey,
+    });
+    return NextResponse.json(result);
+  } catch (err) {
+    if (err instanceof PremiumRequiredError) {
+      return NextResponse.json(premiumRequiredResponse(err.message), { status: 403 });
+    }
+    const message = err instanceof Error ? err.message : "Upload failed";
+    return NextResponse.json({ error: message }, { status: 400 });
+  }
+}