api/app/Http/Controllers/AuthController.php

@@ -47,6 +47,10 @@ class AuthController extends Controller
             return response()->json(['message' => 'Email already registered'], 409);
         }
         
+        if (User::where('nickname', $request->nickname)->exists()) {
+            return response()->json(['message' => 'Nickname already registered'], 409);
+        }
+
         $user = User::create([
             'email' => $request->email,
             'nickname' => $request->nickname,

api/app/Http/Controllers/ProfileController.php

@@ -75,6 +75,13 @@ class ProfileController extends Controller
         ]);
     }
 
+    public function getCoins(Request $request)
+    {
+        return response()->json([
+            'coins' => $request->user()->coins_balance
+        ]);
+    }
+
     public function updateAvatar(Request $request)
     {
         $request->validate([

api/routes/api.php

@@ -24,6 +24,7 @@ Route::prefix('v1')->group(function () {
             Route::get('/', [ProfileController::class, 'show']);
             Route::put('/', [ProfileController::class, 'update']);
             Route::delete('/', [ProfileController::class, 'destroy']);
+            Route::get('/coins', [ProfileController::class, 'getCoins']);
             Route::put('/password', [
                 ProfileController::class,
                 'updatePassword',