feat: throw QuotaExceeded error on upload when applicable

src/errors.ts

@@ -26,3 +26,10 @@ export const InvalidAuthorization = () =>
         name: 'InvalidAuthorization',
         message: 'Provided authorization credentials are invalid',
     }) as FastifyError;
+
+export const QuotaExceeded = () => ({
+    code: '422',
+    statusCode: 422,
+    name: 'QuotaExceeded',
+    message: 'Your quota has exceeded. Please delete some files to proceed.',
+});

src/routes/upload.ts

@@ -5,10 +5,11 @@ import crypto from 'node:crypto';
 import {
     InvalidAuthorization,
     InvalidPayload,
+    QuotaExceeded,
     ValidationError,
 } from '../errors.js';
 import { config } from '../config.js';
-import { getTakenQuota, save } from '../store.js';
+import { save } from '../store.js';
 
 type UploadPayload = {
     data: string; // base64-encoded
@@ -54,7 +55,10 @@ export default (async function (fastify) {
         const data = Buffer.from(body.data, 'base64');
         const name = body.name;
 
-        await save(data, name, client.name);
+        const status = await save(data, name, client.name);
+        if (status === 'Quota exceeded') {
+            throw QuotaExceeded();
+        }
 
         return {
             status: 'ok',