good job

app/Http/Controllers/VerificationController.php

@@ -12,11 +12,23 @@ class VerificationController extends Controller
 {
     public function index()
     {
+        if (request()->cookie('device_registered')) {
+            return redirect()->route('verification.congratulations');
+        }
+
+        if (session()->has('coupon_code')) {
+            return redirect()->route('verification.congratulations');
+        }
+
         return view('verification.index');
     }
 
     public function sendOtp(Request $request)
     {
+        if ($request->cookie('device_registered')) {
+            return back()->withErrors(['phone' => 'Siz eýýäm agza bolduňyz.']);
+        }
+
         $request->validate([
             'phone' => ['required', 'regex:/^\+993 [67]\d \d{2} \d{2} \d{2}$/']
         ], [
@@ -25,6 +37,11 @@ class VerificationController extends Controller
 
         $phone = unmask_phone($request->phone);
 
+        $existingCoupon = Coupon::query()->where('phone', $phone)->first();
+        if ($existingCoupon) {
+            return back()->withErrors(['phone' => 'Bu telefon belgisi eýýäm ulanyldy.'])->withInput();
+        }
+        
         // Generate a 4-digit OTP
         $otp = (string) rand(1000, 9999);
         
@@ -38,7 +55,7 @@ class VerificationController extends Controller
             ]
         );
 
-        sendSMS($phone, $otp);
+        sendSMS($phone, 'Tassyklaýyş belgi: ' . $otp);
 
         // Store phone in session for the next step
         session()->put('verify_phone', $phone);
@@ -48,6 +65,14 @@ class VerificationController extends Controller
 
     public function verifyForm()
     {
+        if (request()->cookie('device_registered')) {
+            return redirect()->route('verification.congratulations');
+        }
+
+        if (session()->has('coupon_code')) {
+            return redirect()->route('verification.congratulations');
+        }
+
         if (! session()->has('verify_phone')) {
             return redirect()->route('verification.index');
         }
@@ -111,20 +136,38 @@ class VerificationController extends Controller
 
         // Put coupon code in session for the congratulations page
         session()->put('coupon_code', $coupon->code);
-        // Clear phone from session as verification is complete
-        session()->forget('verify_phone');
 
-        return redirect()->route('verification.congratulations');
+        // We set a long-lived cookie to mark this device as registered (e.g. 5 years)
+        return redirect()->route('verification.congratulations')
+            ->cookie('device_registered', 'true', 60 * 24 * 365 * 5);
     }
 
     public function congratulations()
     {
-        if (!session()->has('coupon_code')) {
+        // If they have the cookie but lost the session, we don't know their code unless we query
+        // But for simplicity based on the flow, we'll try to find it by phone if available
+        if (!session()->has('coupon_code') && !request()->cookie('device_registered')) {
             return redirect()->route('verification.index');
         }
 
+        $code = session()->get('coupon_code');
+
+        if (!$code && session()->has('verify_phone')) {
+             $coupon = Coupon::query()->where('phone', session()->get('verify_phone'))->first();
+             if ($coupon) {
+                 $code = $coupon->code;
+                 session()->put('coupon_code', $code);
+             }
+        }
+
+        // If for some reason code is completely lost (e.g. cookie exists but session cleared and no phone),
+        // we can't show a specific code. In this specific scenario, we'll default to redirecting back.
+        if (!$code) {
+             return redirect()->route('verification.index')->withoutCookie('device_registered');
+        }
+
         return view('verification.congratulations', [
-            'code' => session()->get('coupon_code')
+            'code' => $code
         ]);
     }
 

resources/views/verification/congratulations.blade.php

@@ -73,9 +73,6 @@
         <button class="w-full bg-primary text-on-primary py-md rounded-full font-label-md text-label-md shadow-[0_4px_12px_rgba(0,105,72,0.3)] hover:opacity-90 active:scale-95 transition-all">
             Häzir ulan
         </button>
-        <a href="{{ route('verification.index') }}" class="w-full text-center bg-transparent text-primary py-md rounded-full font-label-md text-label-md hover:bg-primary/5 active:scale-95 transition-all">
-            Baş sahypa dolan
-        </a>
     </div>
 
     <!-- Info Card -->

resources/views/verification/verify.blade.php

@@ -71,10 +71,11 @@
         </div>
     </form>
     <div class="text-center mt-md">
-        <form action="{{ route('verification.resend') }}" method="POST" class="inline">
+        <form action="{{ route('verification.resend') }}" method="POST" class="inline" id="resend-form">
             @csrf
-            <button type="submit" class="font-label-md text-label-md text-primary hover:underline transition-all">
-                Kody täzeden iber
+            <button type="button" id="resend-btn" class="font-label-md text-label-md text-primary hover:underline transition-all flex items-center justify-center gap-1 mx-auto">
+                <span id="countdown-text" class="text-on-surface-variant font-mono text-sm">(02:00)</span>
+                <span>Kody täzeden iber</span>
             </button>
         </form>
     </div>
@@ -84,7 +85,7 @@
         <div class="flex gap-sm">
             <span class="material-symbols-outlined text-on-surface-variant" data-icon="info">info</span>
             <p class="font-body-sm text-body-sm text-on-surface-variant">
-                SMS kody 2 minutdan 5 minuda çenli baryp biler, garaşmagyňyzy Sizden haýyş edýärin.
+                SMS kody 2 minutdan 5 minuda çenli baryp biler, garaşmagyňyzy Sizden haýyş edýäris.
             </p>
         </div>
     </div>
@@ -127,5 +128,58 @@
             alert('Haýyş, 4 sanly kody giriziň.');
         }
     });
+
+    // Resend OTP Countdown Logic
+    const resendBtn = document.getElementById('resend-btn');
+    const resendForm = document.getElementById('resend-form');
+    const countdownText = document.getElementById('countdown-text');
+    let timeLeft = 120; // 2 minutes
+
+    let storedTime = sessionStorage.getItem('resend_timeout');
+    
+    // Reset timer if we just came from a successful resend
+    const isResent = {{ session('status') ? 'true' : 'false' }};
+    if (isResent) {
+        sessionStorage.setItem('resend_timeout', Date.now().toString());
+        storedTime = sessionStorage.getItem('resend_timeout');
+    }
+
+    if (storedTime) {
+        let elapsed = Math.floor((Date.now() - parseInt(storedTime)) / 1000);
+        timeLeft = Math.max(120 - elapsed, 0);
+    } else {
+        sessionStorage.setItem('resend_timeout', Date.now().toString());
+    }
+
+    const updateCountdown = () => {
+        if (timeLeft > 0) {
+            let m = Math.floor(timeLeft / 60);
+            let s = timeLeft % 60;
+            countdownText.innerText = `(0${m}:${s < 10 ? '0' : ''}${s})`;
+            countdownText.style.display = 'inline';
+            timeLeft--;
+        } else {
+            countdownText.style.display = 'none';
+        }
+    };
+
+    updateCountdown();
+    let timerId = setInterval(() => {
+        if (timeLeft > 0) {
+            updateCountdown();
+        } else {
+            updateCountdown(); // Call one last time to hide it
+            clearInterval(timerId);
+        }
+    }, 1000);
+
+    resendBtn.addEventListener('click', (e) => {
+        if (timeLeft > 0) {
+            alert('SMS kody 2 minutdan 5 minuda çenli baryp biler, garaşmagyňyzy Sizden haýyş edýäris.');
+        } else {
+            sessionStorage.removeItem('resend_timeout');
+            resendForm.submit();
+        }
+    });
 </script>
 @endsection