Optimize the project structure and introduce DDD design (#394)

projects/app/src/pages/api/system/file/delete.ts

@@ -0,0 +1,30 @@
+import type { NextApiRequest, NextApiResponse } from 'next';
+import { jsonRes } from '@/service/response';
+import { connectToDatabase } from '@/service/mongo';
+import { authUser } from '@/service/utils/auth';
+import { GridFSStorage } from '@/service/lib/gridfs';
+
+export default async function handler(req: NextApiRequest, res: NextApiResponse<any>) {
+  try {
+    await connectToDatabase();
+
+    const { fileId } = req.query as { fileId: string };
+
+    if (!fileId) {
+      throw new Error('fileId is empty');
+    }
+
+    const { userId } = await authUser({ req, authToken: true });
+
+    const gridFs = new GridFSStorage('dataset', userId);
+
+    await gridFs.delete(fileId);
+
+    jsonRes(res);
+  } catch (error) {
+    jsonRes(res, {
+      code: 500,
+      error
+    });
+  }
+}