json解析

Assets/Scripts/Buy/IAPManager.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Unity.Services.Core;
 using UnityEngine;
 using UnityEngine.Purchasing;
@@ -76,17 +77,54 @@ public class IAPManager : MonoBehaviour, IDetailedStoreListener
 
     public bool IsSubscribed()
     {
-        if (controller == null) return false;
+        if (controller == null)
+            return false;
 
         Product product = controller.products.WithID(subscriptionId);
         if (product != null && product.hasReceipt)
         {
-            // 对于订阅商品，hasReceipt 通常意味着用户已经订阅
-            Debug.Log("用户已订阅！");
-            return true;
+            string receipt = product.receipt;
+
+            // 解析 JSON（第一层是 Unity 封装的 JSON）
+            var receiptDict = (Dictionary<string, object>)UnityEngine.Purchasing.MiniJSON.Json.Deserialize(receipt);
+            if (receiptDict.TryGetValue("Payload", out object payloadObj))
+            {
+#if UNITY_IOS
+                // iOS 平台下，Payload 是 Apple 的 base64 收据字符串
+                string base64Receipt = payloadObj.ToString();
+
+                // 解码 base64，得到 Apple 的 JSON 收据（PKCS7 → JSON）
+                // 没有服务端，这一步只能依赖 Unity IAP 自动提供的结构
+                var appleReceipt = UnityEngine.Purchasing.MiniJSON.Json.Deserialize(base64Receipt) as Dictionary<string, object>;
+                if (appleReceipt != null && appleReceipt.TryGetValue("latest_receipt_info", out object latestInfoObj))
+                {
+                    var latestList = latestInfoObj as List<object>;
+                    if (latestList != null && latestList.Count > 0)
+                    {
+                        var latest = latestList[latestList.Count - 1] as Dictionary<string, object>;
+                        if (latest != null && latest.TryGetValue("expires_date_ms", out object expiresMsObj))
+                        {
+                            long expiresMs = long.Parse(expiresMsObj.ToString());
+                            DateTimeOffset expiresTime = DateTimeOffset.FromUnixTimeMilliseconds(expiresMs);
+                            if (expiresTime > DateTimeOffset.UtcNow)
+                            {
+                                Debug.Log("订阅有效，过期时间：" + expiresTime);
+                                return true;
+                            }
+                            else
+                            {
+                                Debug.Log("订阅已过期：" + expiresTime);
+                            }
+                        }
+                    }
+                }
+#else
+            Debug.LogWarning("非 iOS 平台，无法解析 iOS 订阅");
+#endif
+            }
         }
 
-        Debug.Log("用户未订阅。");
+        Debug.Log("未订阅或订阅已过期");
         return false;
     }