Max file upload 500MB

convex/files.ts

@@ -12,6 +12,25 @@ export const generateUploadUrl = mutation({
   },
 });
 
+const MAX_ATTACHMENT_SIZE = 500 * 1024 * 1024; // 500MB
+
+// Validate uploaded file size and return its URL. Deletes file if too large.
+export const validateUpload = mutation({
+  args: { storageId: v.id("_storage") },
+  returns: v.string(),
+  handler: async (ctx, args) => {
+    const meta = await ctx.storage.getMetadata(args.storageId);
+    if (!meta) throw new Error("File not found in storage");
+    if (meta.size > MAX_ATTACHMENT_SIZE) {
+      await ctx.storage.delete(args.storageId);
+      throw new Error("File must be under 500MB");
+    }
+    const url = await getPublicStorageUrl(ctx, args.storageId);
+    if (!url) throw new Error("Failed to get file URL");
+    return url;
+  },
+});
+
 // Get file URL from storage ID
 export const getFileUrl = query({
   args: { storageId: v.id("_storage") },