retrieveCoupon success action

@@ -175,10 +175,34 @@ import UIKit
         }
         
         let alert = UIAlertController(title: "Επιτυχία", message: message, preferredStyle: .alert)
-        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
+        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { [weak self] _ in
+            self?.navigateToCouponViewController(couponCode: couponCode, expiration: expiration)
+        }))
         present(alert, animated: true, completion: nil)
     }
     
+    private func navigateToCouponViewController(couponCode: String, expiration: String) {
+        // Build a CouponItemModel from the retrieve response + current couponset
+        let couponDict: [String: Any] = [
+            "coupon": couponCode,
+            "expiration": expiration,
+            "status": 1,
+            "couponset_uuid": couponset?._uuid ?? ""
+        ]
+        
+        let couponItem = CouponItemModel(dictionary: couponDict)
+        
+        // Attach the couponset data so CouponViewController can display name, image, description, terms, etc.
+        if let couponsetData = couponset {
+            couponItem.setCouponSetData(couponsetData)
+        }
+        
+        // Navigate to CouponViewController
+        let couponVC = CouponViewController()
+        couponVC.coupon = couponItem
+        self.navigationController?.pushViewController(couponVC, animated: true)
+    }
+    
     private func showErrorAlert(message: String) {
         let alert = UIAlertController(title: "Σφάλμα", message: message, preferredStyle: .alert)
         alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))