add retrieveCoupon functionality

@@ -7,7 +7,7 @@
 		<key>Pods-SwiftWarplyFramework.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>0</integer>
 		</dict>
 	</dict>
 </dict>

@@ -7,7 +7,7 @@
 		<key>SwiftWarplyFramework.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>0</integer>
+			<integer>1</integer>
 		</dict>
 	</dict>
 </dict>

@@ -1675,6 +1675,77 @@ public final class WarplySDK {
         }
     }
     
+    /// Retrieve a coupon from a coupon set (offer)
+    /// - Parameters:
+    ///   - couponSetUuid: The UUID of the coupon set (offer) to retrieve a coupon from
+    ///   - completion: Completion handler with response dictionary containing coupon code and expiration
+    ///   - failureCallback: Failure callback with error code
+    ///
+    /// Response structure on success:
+    /// ```json
+    /// {
+    ///     "msg": "Retrieved",
+    ///     "result": {
+    ///         "coupon": "FNMRE2E5FXHH",
+    ///         "expiration": "2026-10-31 23:59:00"
+    ///     },
+    ///     "status": 1
+    /// }
+    /// ```
+    public func retrieveCoupon(couponSetUuid: String, completion: @escaping ([String: Any]?) -> Void, failureCallback: @escaping (Int) -> Void) {
+        Task {
+            do {
+                let response = try await networkService.retrieveCoupon(couponSetUuid: couponSetUuid)
+                
+                await MainActor.run {
+                    if response["status"] as? Int == 1 {
+                        let dynatraceEvent = LoyaltySDKDynatraceEventModel()
+                        dynatraceEvent._eventName = "custom_success_retrieve_coupon_loyalty"
+                        dynatraceEvent._parameters = nil
+                        self.postFrameworkEvent("dynatrace", sender: dynatraceEvent)
+                        
+                        print("✅ [WarplySDK] Coupon retrieved successfully")
+                        if let result = response["result"] as? [String: Any] {
+                            print("   Coupon: \(result["coupon"] as? String ?? "unknown")")
+                            print("   Expiration: \(result["expiration"] as? String ?? "unknown")")
+                        }
+                        
+                        completion(response)
+                    } else {
+                        let dynatraceEvent = LoyaltySDKDynatraceEventModel()
+                        dynatraceEvent._eventName = "custom_error_retrieve_coupon_loyalty"
+                        dynatraceEvent._parameters = nil
+                        self.postFrameworkEvent("dynatrace", sender: dynatraceEvent)
+                        
+                        failureCallback(-1)
+                    }
+                }
+            } catch {
+                await MainActor.run {
+                    self.handleError(error, context: "retrieveCoupon", endpoint: "retrieveCoupon", failureCallback: failureCallback)
+                }
+            }
+        }
+    }
+    
+    /// Retrieve a coupon from a coupon set (async/await variant)
+    /// - Parameter couponSetUuid: The UUID of the coupon set (offer) to retrieve a coupon from
+    /// - Returns: Response dictionary containing coupon code and expiration
+    /// - Throws: WarplyError if the request fails
+    public func retrieveCoupon(couponSetUuid: String) async throws -> [String: Any] {
+        return try await withCheckedThrowingContinuation { continuation in
+            retrieveCoupon(couponSetUuid: couponSetUuid, completion: { response in
+                if let response = response {
+                    continuation.resume(returning: response)
+                } else {
+                    continuation.resume(throwing: WarplyError.networkError)
+                }
+            }, failureCallback: { errorCode in
+                continuation.resume(throwing: WarplyError.unknownError(errorCode))
+            })
+        }
+    }
+    
     /// Verify ticket for user authentication
     public func verifyTicket(guid: String, ticket: String, completion: @escaping (VerifyTicketResponseModel?) -> Void) {
         // Clear previous state

@@ -89,6 +89,7 @@ public enum Endpoint {
     // Coupon Operations
     case validateCoupon(coupon: [String: Any])
     case redeemCoupon(productId: String, productUuid: String, merchantId: String)
+    case retrieveCoupon(couponSetUuid: String)
     
     // Profile
     case getProfile
@@ -137,7 +138,7 @@ public enum Endpoint {
             return "/api/mobile/v2/{appUUID}/context/"
             
         // Authenticated Context endpoints - /oauth/{appUUID}/context
-        case .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon:
+        case .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon, .retrieveCoupon:
             return "/oauth/{appUUID}/context"
             
         // Session endpoints - /api/session/{sessionUuid}
@@ -166,7 +167,7 @@ public enum Endpoint {
         switch self {
         case .register, .changePassword, .resetPassword, .requestOtp, .verifyTicket, .refreshToken, .logout, .getCampaigns, .getCampaignsPersonalized, 
              .getCoupons, .getCouponSets, .getAvailableCoupons,
-             .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon, .getMerchants, .getMerchantCategories, .getArticles, .sendEvent, .sendDeviceInfo, .getCosmoteUser, .deiLogin:
+             .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon, .retrieveCoupon, .getMerchants, .getMerchantCategories, .getArticles, .sendEvent, .sendDeviceInfo, .getCosmoteUser, .deiLogin:
             return .POST
         case .getSingleCampaign, .getNetworkStatus:
             return .GET
@@ -383,6 +384,14 @@ public enum Endpoint {
                 ]
             ]
             
+        case .retrieveCoupon(let couponSetUuid):
+            return [
+                "coupon": [
+                    "action": "retrieve_coupon",
+                    "coupon_set": couponSetUuid
+                ]
+            ]
+            
         // Merchants - using correct shops structure for DEI API
         case .getMerchants(let language, let categories, let defaultShown, let center, let tags, let uuid, let distance, let parentUuids):
             return [
@@ -473,7 +482,7 @@ public enum Endpoint {
             return .standardContext
             
         // Authenticated Context - /oauth/{appUUID}/context
-        case .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon:
+        case .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon, .retrieveCoupon:
             return .authenticatedContext
             
         // Authentication - /oauth/{appUUID}/login, /oauth/{appUUID}/token
@@ -515,7 +524,7 @@ public enum Endpoint {
             return .standard
             
         // Bearer Token Authentication (loyalty headers + Authorization: Bearer)
-        case .changePassword, .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon:
+        case .changePassword, .getCampaignsPersonalized, .getCoupons, .getMarketPassDetails, .getProfile, .addCard, .getCards, .deleteCard, .getTransactionHistory, .getPointsHistory, .validateCoupon, .redeemCoupon, .retrieveCoupon:
             return .bearerToken
             
         // Basic Authentication (loyalty headers + Authorization: Basic)

@@ -1084,6 +1084,20 @@ extension NetworkService {
         return response
     }
     
+    /// Retrieve a coupon from a coupon set
+    /// - Parameter couponSetUuid: The UUID of the coupon set (offer) to retrieve a coupon from
+    /// - Returns: Response dictionary containing the retrieved coupon code and expiration
+    /// - Throws: NetworkError if request fails
+    public func retrieveCoupon(couponSetUuid: String) async throws -> [String: Any] {
+        print("🔄 [NetworkService] Retrieving coupon for coupon set: \(couponSetUuid)")
+        let endpoint = Endpoint.retrieveCoupon(couponSetUuid: couponSetUuid)
+        let response = try await requestRaw(endpoint)
+        
+        print("✅ [NetworkService] Coupon retrieval request completed")
+        
+        return response
+    }
+    
     // MARK: - Card Security Utilities
     
     /// Mask card number for secure logging

@@ -42,9 +42,7 @@ import UIKit
     @IBOutlet weak var termsLabel: UILabel!
     @IBOutlet weak var termsLabelHeight: NSLayoutConstraint!
     
-    @IBOutlet weak var mapButton: UIButton!
-    
-    @IBOutlet weak var websiteButton: UIButton!
+    @IBOutlet weak var redeemButton: UIButton!
     
     var couponset: CouponSetItemModel?
     private var isDetailsExpanded = false
@@ -52,6 +50,9 @@ import UIKit
     private var isCouponQRExpanded = false
     private var isTermsExpanded = false
     
+    // Loader overlay
+    private var loaderOverlay: UIView?
+    
     var postImageURL: String? {
         didSet {
             if let url = postImageURL {
@@ -97,21 +98,13 @@ import UIKit
         termsButton.addTarget(self, action: #selector(toggleTerms), for: .touchUpInside)
         termsLabelHeight.constant = 0
         
-        mapButton.titleLabel?.font = UIFont(name: "PingLCG-Bold", size: 16)
-        mapButton.setTitle("Καταστήματα κοντά μου", for: .normal)
-        mapButton.setTitleColor(UIColor(rgb: 0xFFFFFF), for: .normal)
-        mapButton.setTitleColor(UIColor(rgb: 0xFFFFFF), for: .highlighted)
-        mapButton.layer.cornerRadius = 4.0
-        mapButton.backgroundColor = UIColor(rgb: 0x000F1E)
-        
-        websiteButton.titleLabel?.font = UIFont(name: "PingLCG-Bold", size: 16)
-        websiteButton.setTitle("Δες το website", for: .normal)
-        websiteButton.setTitleColor(UIColor(rgb: 0x000F1E), for: .normal)
-        websiteButton.setTitleColor(UIColor(rgb: 0x000F1E), for: .highlighted)
-        websiteButton.backgroundColor = .clear
-        websiteButton.layer.borderWidth = 1
-        websiteButton.layer.borderColor = UIColor(rgb: 0x000F1E).cgColor
-        websiteButton.layer.cornerRadius = 4.0
+        redeemButton.titleLabel?.font = UIFont(name: "PingLCG-Bold", size: 16)
+        redeemButton.setTitle("Απόκτησε το κουπόνι", for: .normal)
+        redeemButton.setTitleColor(UIColor(rgb: 0xFFFFFF), for: .normal)
+        redeemButton.setTitleColor(UIColor(rgb: 0xFFFFFF), for: .highlighted)
+        redeemButton.layer.cornerRadius = 4.0
+        redeemButton.backgroundColor = UIColor(rgb: 0x000F1E)
+        redeemButton.addTarget(self, action: #selector(redeemButtonTapped), for: .touchUpInside)
         
         // Configure the view with offer data
         if let offer = couponset {
@@ -119,6 +112,79 @@ import UIKit
         }
     }
 
+    @objc private func redeemButtonTapped() {
+        guard let couponSetUuid = couponset?._uuid, !couponSetUuid.isEmpty else {
+            showErrorAlert(message: "Δεν βρέθηκε το αναγνωριστικό της προσφοράς.")
+            return
+        }
+        
+        // Disable button to prevent double taps
+        redeemButton.isEnabled = false
+        showLoader()
+        
+        WarplySDK.shared.retrieveCoupon(couponSetUuid: couponSetUuid, completion: { [weak self] response in
+            guard let self = self else { return }
+            self.hideLoader()
+            self.redeemButton.isEnabled = true
+            
+            if let response = response,
+               let result = response["result"] as? [String: Any],
+               let couponCode = result["coupon"] as? String {
+                let expiration = result["expiration"] as? String ?? ""
+                self.showSuccessAlert(couponCode: couponCode, expiration: expiration)
+            } else {
+                self.showErrorAlert(message: "Η ενεργοποίηση του κουπονιού απέτυχε. Παρακαλώ δοκίμασε ξανά.")
+            }
+        }, failureCallback: { [weak self] errorCode in
+            guard let self = self else { return }
+            self.hideLoader()
+            self.redeemButton.isEnabled = true
+            self.showErrorAlert(message: "Η ενεργοποίηση του κουπονιού απέτυχε. Παρακαλώ δοκίμασε ξανά.")
+        })
+    }
+    
+    // MARK: - Loader
+    
+    private func showLoader() {
+        let overlay = UIView(frame: self.view.bounds)
+        overlay.backgroundColor = UIColor.black.withAlphaComponent(0.3)
+        overlay.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        
+        let spinner = UIActivityIndicatorView(style: .large)
+        spinner.color = .white
+        spinner.center = overlay.center
+        spinner.autoresizingMask = [.flexibleTopMargin, .flexibleBottomMargin, .flexibleLeftMargin, .flexibleRightMargin]
+        spinner.startAnimating()
+        
+        overlay.addSubview(spinner)
+        self.view.addSubview(overlay)
+        self.loaderOverlay = overlay
+    }
+    
+    private func hideLoader() {
+        loaderOverlay?.removeFromSuperview()
+        loaderOverlay = nil
+    }
+    
+    // MARK: - Alerts
+    
+    private func showSuccessAlert(couponCode: String, expiration: String) {
+        var message = "Ο κωδικός κουπονιού σου:\n\(couponCode)"
+        if !expiration.isEmpty {
+            message += "\n\nΛήξη: \(expiration)"
+        }
+        
+        let alert = UIAlertController(title: "Επιτυχία", message: message, preferredStyle: .alert)
+        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
+        present(alert, animated: true, completion: nil)
+    }
+    
+    private func showErrorAlert(message: String) {
+        let alert = UIAlertController(title: "Σφάλμα", message: message, preferredStyle: .alert)
+        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
+        present(alert, animated: true, completion: nil)
+    }
+
     private func setupUI(with couponset: CouponSetItemModel) {
 //        couponImage.image = UIImage(named: couponset._img_preview, in: Bundle.frameworkResourceBundle, compatibleWith: nil)
         self.postImageURL = couponset._img_preview