modify scripts

Assets/WordConnectGameToolkit/Scripts/Services/IAP/IAPController.cs

@@ -25,6 +25,7 @@ namespace WordsToolkit.Scripts.Services.IAP
         private IExtensionProvider extensionProvider;
 
         public static event Action<string> OnSuccessfulPurchase;
+        public static event Action<(string,string)> OnFailedPurchase;
         public static event Action<bool, List<string>> OnRestorePurchasesFinished;
 
         public void InitializePurchasing(IEnumerable<(string productId, ProductTypeWrapper.ProductType productType)> products)
@@ -111,20 +112,24 @@ namespace WordsToolkit.Scripts.Services.IAP
                     {
                         Debug.Log(string.Format("Purchasing product asychronously: '{0}'", product.definition.id));
                         storeController.InitiatePurchase(product);
+                        OnFailedPurchase?.Invoke((productId, "Product not found or not available for purchase."));  // debug only
                     }
                     else
                     {
                         Debug.Log($"BuyProductID: FAIL. Not purchasing product, either is not found or is not available for purchase {productId}");
+                        OnFailedPurchase?.Invoke((productId, "InvalidProductID: product not found or not available for purchase."));
                     }
                 }
                 else
                 {
-                    Debug.Log("BuyProductID FAIL. Not initialized.");
+                    Debug.Log("IAPInitFailed: BuyProductID FAIL. Not initialized.");
+                    OnFailedPurchase?.Invoke((productId, "IAPInitFailed: Not initialized."));
                 }
             }
             catch (Exception e)
             {
                 Debug.Log("BuyProductID: FAIL. Exception during purchase. " + e);
+                OnFailedPurchase?.Invoke((productId, "Exception during purchase: " + e.Message));
             }
         }
 
@@ -159,11 +164,13 @@ namespace WordsToolkit.Scripts.Services.IAP
         public void OnPurchaseFailed(Product product, PurchaseFailureDescription failureDescription)
         {
             Debug.Log("OnPurchaseFailed: FAIL. Product: " + product.definition.id + " PurchaseFailureDescription: " + failureDescription);
+            OnFailedPurchase?.Invoke((product.definition.id, failureDescription.message));
         }
 
         public void OnPurchaseFailed(Product i, PurchaseFailureReason p)
         {
             Debug.Log($"OnPurchaseFailed: FAIL. Product: '{i.definition.id}', PurchaseFailureReason: {p}");
+            OnFailedPurchase?.Invoke((i.definition.id, p.ToString()));
         }
 
         public void OnInitializeFailed(InitializationFailureReason reason)

Assets/WordConnectGameToolkit/Scripts/Services/IAP/IAPErr.cs

@@ -0,0 +1,57 @@
+using System;
+
+namespace WordsToolkit.Scripts.Services.IAP
+{
+    /// <summary>
+    /// IAP 典型错误类型枚举
+    /// </summary>
+    public enum IAPErrorType
+    {
+        None,
+        UserCancelled,
+        PaymentDeclined,
+        InsufficientFunds,
+        ProductUnavailable,
+        DuplicateTransaction,
+        NetworkError,
+        NetworkUnavailable,
+        IAPInitFailed,
+        InvalidProductID,
+        Unknown
+    }
+
+    public static class IAPErrorHelper
+    {
+        /// <summary>
+        /// 根据错误信息字符串，提取并映射到 IAPErrorType 枚举
+        /// </summary>
+        public static IAPErrorType ParseError(string errorMessage)
+        {
+            if (string.IsNullOrEmpty(errorMessage))
+                return IAPErrorType.Unknown;
+
+            errorMessage = errorMessage.ToLowerInvariant();
+
+            if (errorMessage.Contains("usercancelled") || errorMessage.Contains("user cancelled"))
+                return IAPErrorType.UserCancelled;
+            if (errorMessage.Contains("paymentdeclined") || errorMessage.Contains("payment declined"))
+                return IAPErrorType.PaymentDeclined;
+            if (errorMessage.Contains("insufficientfunds") || errorMessage.Contains("insufficient funds"))
+                return IAPErrorType.InsufficientFunds;
+            if (errorMessage.Contains("productunavailable") || errorMessage.Contains("product unavailable"))
+                return IAPErrorType.ProductUnavailable;
+            if (errorMessage.Contains("duplicatetransaction") || errorMessage.Contains("duplicate transaction"))
+                return IAPErrorType.DuplicateTransaction;
+            if (errorMessage.Contains("networkerror") || errorMessage.Contains("network error"))
+                return IAPErrorType.NetworkError;
+            if (errorMessage.Contains("networkunavailable") || errorMessage.Contains("network unavailable"))
+                return IAPErrorType.NetworkUnavailable;
+            if (errorMessage.Contains("InvalidProductID".ToLowerInvariant()) )
+                return IAPErrorType.InvalidProductID;
+            if (errorMessage.Contains("IAPInitFailed".ToLowerInvariant()))
+                return IAPErrorType.IAPInitFailed;
+
+            return IAPErrorType.Unknown;
+        }
+    }
+}

Assets/WordConnectGameToolkit/Scripts/Services/IAP/IAPErr.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 03eff658508844cfd91bab5657295e76
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/WordConnectGameToolkit/Scripts/Services/IAP/IAPManager.cs

@@ -50,6 +50,12 @@ namespace WordsToolkit.Scripts.Services.IAP
             IAPController.OnSuccessfulPurchase += purchaseHandler;
             #endif
         }
+        public void SubscribeToPurchaseFailedEvent(Action<(string, string)> purchaseHandler)
+        {
+            #if UNITY_PURCHASING
+            IAPController.OnFailedPurchase += purchaseHandler;
+            #endif
+        }
 
         public void UnsubscribeFromPurchaseEvent(Action<string> purchaseHandler)
         {

Assets/WordConnectGameToolkit/Scripts/Services/IAP/IIAPManager.cs

@@ -13,6 +13,8 @@ namespace WordsToolkit.Scripts.Services.IAP
         bool IsProductPurchased(string productId);
         void RestorePurchases(Action<bool, List<string>> action);
         void SubscribeToPurchaseEvent(Action<string> purchaseHandler);
+
+        void SubscribeToPurchaseFailedEvent(Action<(string, string)> purchaseHandler);
         void UnsubscribeFromPurchaseEvent(Action<string> purchaseHandler);
     }
 }