use _id_ as query prefix

src/controllers/user.ts

@@ -196,13 +196,10 @@ export const UpdateAccount = async (ctx: Context) => {
 async function queryUser(username: string) {
     if (!username) return;
     const userRepository = getEntityManager().getRepository(User);
-    const possibleId = parseInt(username);
-    const query = userRepository.createQueryBuilder('user')
-        .where('user.username = :username', { username })
-    if (!isNaN(possibleId)) { 
-        query.orWhere('user.id = :id', { id: possibleId });
-    }
-    return query.getOne();
+    return await userRepository
+        .findOne({
+            where: username.startsWith('_id_') ? { id: parseInt(username.slice(3)) } : { username },
+        });
 }