fix free subscribe issue

app/Http/Controllers/api/AuthController.php

@@ -6,6 +6,7 @@ use App\Http\Controllers\Controller;
 use App\Http\Requests\AuthRequest;
 use App\Models\User;
 use App\Models\UserCode;
+use App\Models\SubscribePlan;
 use App\Traits\BaseApiResponse;
 use Carbon\Carbon;
 use Illuminate\Http\Request;
@@ -91,6 +92,29 @@ class AuthController extends Controller
         if ($latestCode->code === $request->code) {
             $token = $user->createToken('mobile')->plainTextToken;
 
+            // --- AUTO 30-DAY SUBSCRIPTION LOGIC ---
+
+            // 1. Check if they have ever used a free plan before
+            $hasUsedFreePlan = $user->userSubscribers()
+                ->whereHas('subscribe', function ($query) {
+                    $query->where('is_free', true);
+                })->exists();
+
+            // 2. If not, find the active free plan and assign it
+            if (!$hasUsedFreePlan) {
+                $freePlan = SubscribePlan::where('is_free', true)->where('is_active', true)->first();
+
+                if ($freePlan) {
+                    // We intentionally DO NOT pass 'is_free' => true here,
+                    // matching SubscribePlanController to ensure the frontend hides the banner!
+                    $user->userSubscribers()->create([
+                        'subscribe_plan_id' => $freePlan->id,
+                        'expired_at' => now()->addDays($freePlan->expired_day + 1),
+                    ]);
+                }
+            }
+            // ----------------------------------------------
+
             return $this->success(['token' => $token], 'ورود موفقیت امیز بود');
         } else {
             return $this->failed([], 'کد ورود اشتباه است', 404);