fix(upload): drop the unused thumbnail upload

src/app/api/upload/route.ts

@@ -10,14 +10,13 @@ export async function POST(req: Request) {
     const formData = await req.formData();
     const files = formData.getAll("files").filter(Boolean) as File[];
     const isPdf = formData.get("isPdf") === "true";
-    const thumbnail = formData.get("thumbnail") as File | null;
     const campus = formData.get("campus") as string | null;
 
     if (files.length === 0) {
       return failure("No files received.", 400);
     }
 
-    const result = await uploadPaper({ files, isPdf, thumbnail, campus });
+    const result = await uploadPaper({ files, isPdf, campus });
 
     if (!result.success) {
       return failure(result.message, result.status);
@@ -55,7 +54,7 @@ export async function POST(req: Request) {
     }
 
     return success(
-      { file_url: result.file_url, thumbnail_url: result.thumbnail_url },
+      { file_url: result.file_url },
       "Created",
       201,
     );

src/app/upload/page.tsx

@@ -32,7 +32,6 @@ GlobalWorkerOptions.workerSrc =
 
 interface uploadResponse {
   file_url: string;
-  thumbnail_url: string;
 }
 export default function Page() {
   const campus = "Vellore";

src/lib/services/upload.ts

@@ -1,6 +1,6 @@
 import { PaperAdmin } from "@/db/papers";
 import { createPDFfromImages, compressPDF } from "@/lib/storage/pdf";
-import { uploadPDF, uploadThumbnail } from "@/lib/storage/gcp";
+import { uploadPDF } from "@/lib/storage/gcp";
 import { connectToDatabase } from "@/lib/database/mongoose";
 
 const MAX_COMPRESSED_PDF_SIZE = 5 * 1024 * 1024; // 5MB compressed
@@ -9,18 +9,16 @@ const COMPRESS_THRESHOLD = 5 * 1024 * 1024; // 5MB
 type UploadPaperInput = {
   files: File[];
   isPdf: boolean;
-  thumbnail: File | null;
   campus: string | null;
 };
 
 type UploadPaperResult =
-  | { success: true; file_url: string; thumbnail_url: string | null }
+  | { success: true; file_url: string }
   | { success: false; message: string; status: number };
 
 export async function uploadPaper({
   files,
   isPdf,
-  thumbnail,
   campus,
 }: UploadPaperInput): Promise<UploadPaperResult> {
   await connectToDatabase();
@@ -63,15 +61,9 @@ export async function uploadPaper({
   const buffer = Buffer.from(pdfBytes);
   const file_url = await uploadPDF("unapproved", buffer);
 
-  let thumbnail_url: string | null = null;
-  if (thumbnail) {
-    const thumbBuffer = Buffer.from(await thumbnail.arrayBuffer());
-    thumbnail_url = await uploadThumbnail(thumbBuffer, file_url);
-  }
-
   const paper = new PaperAdmin({
     file_url,
-    thumbnail_url,
+    thumbnail_url: null,
     campus,
     subject: null,
     slot: null,
@@ -82,5 +74,5 @@ export async function uploadPaper({
   });
   await paper.save();
 
-  return { success: true, file_url, thumbnail_url };
+  return { success: true, file_url };
 }

src/lib/storage/gcp.ts

@@ -43,14 +43,4 @@ export async function uploadPDF(folder: string, buffer: Buffer) {
   const pdfFilename = `${folder}/${Date.now()}-${Math.random().toString(36).substring(2)}.pdf`;
   await bucket.file(pdfFilename).save(buffer, { resumable: false, contentType: "application/pdf" });
   return `https://storage.googleapis.com/${bucketName}/${pdfFilename}`;
-}
-
-export async function uploadThumbnail(buffer: Buffer, pdfFilename: string) {
-  if (!bucket) {
-    throw new Error("Google Cloud Storage is not configured");
-  }
-  const bucketName = process.env.GOOGLE_CLOUD_BUCKET ?? "";
-  const thumbFilename = pdfFilename.replace(".pdf", ".png");
-  await bucket.file(thumbFilename).save(buffer, { resumable: false, contentType: "image/png" });
-  return `https://storage.googleapis.com/${bucketName}/${thumbFilename}`;
 }