From 79349124bc149b7fb605988f49e5a12e073de7c2 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Sat, 30 Dec 2023 09:57:33 -0600
Subject: [PATCH] Prevent duplicate usernames from being added

---
 src/db/users.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/db/users.ts b/src/db/users.ts
index d223b1c7..bbfd6788 100644
--- a/src/db/users.ts
+++ b/src/db/users.ts
@@ -35,6 +35,9 @@ function buildUserEvent(user: User) {
 /** Adds a user to the database. */
 async function insertUser(user: User) {
   debug('insertUser', JSON.stringify(user));
+  if (await findUser({ username: user.username })) {
+    throw new Error('User already exists');
+  }
   const event = await buildUserEvent(user);
   return pipeline.handleEvent(event);
 }