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keyBoard/Class/Pay/StoreKit2Manager/Converts/ProductConverter.swift

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+//
+//  ProductConverter.swift
+//  StoreKit2Manager
+//
+//  Created by xiaopin on 2025/12/6.
+//
+
+import Foundation
+import StoreKit
+
+/// Product 转换器
+/// 将 Product 对象转换为可序列化的基础数据类型（Dictionary/JSON）
+public struct ProductConverter {
+    
+    /// 将 Product 转换为 Dictionary（可序列化为 JSON）
+    /// - Parameter product: Product 对象
+    /// - Returns: Dictionary 对象，包含所有产品信息
+    public static func toDictionary(_ product: Product) -> [String: Any] {
+        var dict: [String: Any] = [:]
+        
+        // 基本信息（确保都是字符串类型）
+        dict["id"] = product.id
+        dict["displayName"] = product.displayName
+        dict["description"] = product.description
+        
+        // 价格信息
+        let priceDecimal = product.price
+        let priceDouble = NSDecimalNumber(decimal: priceDecimal).doubleValue
+        dict["price"] = Double(String(format: "%.2f", priceDouble)) ?? priceDouble
+        dict["displayPrice"] = product.displayPrice
+        
+        // 产品类型
+        dict["type"] = productTypeToString(product.type)
+        
+        // 家庭共享
+        dict["isFamilyShareable"] = product.isFamilyShareable
+        
+        // JSON 表示（可选，可能很大，通常用于服务器验证）
+        // 注意：jsonRepresentation 是 Data 类型，转换为 Base64 字符串以便 JSON 序列化
+        let jsonData = product.jsonRepresentation
+        if let jsonString = String(data: jsonData, encoding: .utf8) {
+            dict["jsonRepresentation"] = jsonString
+        } else {
+            dict["jsonRepresentation"] = ""
+        }
+        
+        // 订阅信息（如果有）
+        if let subscription = product.subscription {
+            dict["subscription"] = SubscriptionConverter.subscriptionInfoToDictionary(subscription, product: product)
+        } else {
+            dict["subscription"] = NSNull()
+        }
+        
+        return dict
+    }
+    
+    /// 将 Product 数组转换为 Dictionary 数组
+    /// - Parameter products: Product 数组
+    /// - Returns: Dictionary 数组
+    public static func toDictionaryArray(_ products: [Product]) -> [[String: Any]] {
+        return products.map { toDictionary($0) }
+    }
+    
+    /// 将 Product 转换为 JSON 字符串
+    /// - Parameter product: Product 对象
+    /// - Returns: JSON 字符串
+    public static func toJSONString(_ product: Product) -> String? {
+        let dict = toDictionary(product)
+        return dictionaryToJSONString(dict)
+    }
+    
+    /// 将 Product 数组转换为 JSON 字符串
+    /// - Parameter products: Product 数组
+    /// - Returns: JSON 字符串
+    public static func toJSONString(_ products: [Product]) -> String? {
+        let array = toDictionaryArray(products)
+        return arrayToJSONString(array)
+    }
+    
+    // MARK: - 私有方法
+    
+    /// 产品类型转字符串
+    private static func productTypeToString(_ type: Product.ProductType) -> String {
+        switch type {
+        case .consumable:
+            return "consumable"
+        case .nonConsumable:
+            return "nonConsumable"
+        case .autoRenewable:
+            return "autoRenewable"
+        case .nonRenewable:
+            return "nonRenewable"
+        default:
+            return "unknown"
+        }
+    }
+    
+    /// Dictionary 转 JSON 字符串
+    internal static func dictionaryToJSONString(_ dict: [String: Any]) -> String? {
+        guard let jsonData = try? JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted),
+              let jsonString = String(data: jsonData, encoding: .utf8) else {
+            return nil
+        }
+        return jsonString
+    }
+    
+    /// Array 转 JSON 字符串
+    internal static func arrayToJSONString(_ array: [[String: Any]]) -> String? {
+        guard let jsonData = try? JSONSerialization.data(withJSONObject: array, options: .prettyPrinted),
+              let jsonString = String(data: jsonData, encoding: .utf8) else {
+            return nil
+        }
+        return jsonString
+    }
+}
+