Character name field is always unique, updated init migration

src/app/events/CharacterCreate.ts

@@ -11,6 +11,14 @@ export default function (socket: TSocket, io: Server) {
             data = ZCharacterCreate.parse(data);
 
             const user_id = socket.user?.id as number;
+
+            // Check if character name already exists
+            const characterExists = await CharacterRepository.getByName(data.name);
+
+            if (characterExists) {
+                return socket.emit('notification', {message: 'Character name already exists'});
+            }
+
             const character: Character = await CharacterRepository.create(user_id, data.name) as Character;
             const characters: Character[] = await CharacterRepository.getByUserId(user_id) as Character[];