fix: update the api to hash the buffer instead of filename

src/app/api/upload/file/route.ts

@@ -34,12 +34,14 @@ export const POST = async (request: NextRequest) => {
   const size = file.size;
   const fileType = file.type;
   const fileExtenstion = file.type.split("/")[1] || "";
-  const hashedFilename = concat(md5(file.name), ".", fileExtenstion);
 
   // we can do compression or resizing here and return a new buffer
   const buffer = Buffer.from(await file.arrayBuffer());
 
-  const url = await R2.upload(buffer, hashedFilename, fileType)
+  // hash the content and append the file extension
+  const hashedContent = concat(md5(buffer), ".", fileExtenstion);
+
+  const url = await R2.upload(buffer, hashedContent, fileType)
     .then(ok)
     .catch(err);
 
@@ -49,7 +51,7 @@ export const POST = async (request: NextRequest) => {
 
   const userUploadParams = insertUserUploadSchema.safeParse({
     userId: session.user.id,
-    hashedFilename: hashedFilename,
+    hash: hashedContent,
     filename: file.name,
     size,
   } satisfies NewUserUpload);

src/app/api/upload/url/route.ts

@@ -33,12 +33,13 @@ export const POST = async (request: NextRequest) => {
   const fileType = blob.type;
   const fileExtenstion = fileType.split("/").pop() || "";
   const size = blob.size;
-  const hashedFilename = concat(md5(filename), ".", fileExtenstion);
 
   // we can do compression or resizing here and return a new buffer
   const buffer = Buffer.from(await blob.arrayBuffer());
 
-  const url = await R2.upload(buffer, hashedFilename, fileType)
+  const hashedContent = concat(md5(buffer), ".", fileExtenstion);
+
+  const url = await R2.upload(buffer, hashedContent, fileType)
     .then(ok)
     .catch(err);
 
@@ -48,7 +49,7 @@ export const POST = async (request: NextRequest) => {
 
   const userUploadParams = insertUserUploadSchema.safeParse({
     userId: session.user.id,
-    hashedFilename: hashedFilename,
+    hash: hashedContent,
     filename: filename,
     size,
   } satisfies NewUserUpload);

src/lib/md5.ts

@@ -5,6 +5,6 @@ import crypto from "crypto";
  * @param input - string to hash
  * @returns md5 hashed string
  */
-export const md5 = (input: string) => {
+export const md5 = (input: crypto.BinaryLike) => {
   return crypto.createHash("md5").update(input).digest("hex");
 };