using System;
using UnityEngine;
using UnityEngine.Purchasing;
using UnityEngine.Purchasing.Extension;

public class IAPManager : MonoBehaviour, IDetailedStoreListener
{
    public static IAPManager Instance { get; private set; }  // 单例

    private IStoreController controller;
    private IExtensionProvider extensions;

    private string subscriptionId = "quewenYueKa";


    void Awake()
    {
        // 单例初始化
        if (Instance == null)
        {
            Instance = this;
            DontDestroyOnLoad(gameObject);  // 可选：防止切换场景被销毁
        }
        else
        {
            Destroy(gameObject);  // 避免重复创建
        }
    }

    void Start()
    {
        var builder = ConfigurationBuilder.Instance(StandardPurchasingModule.Instance());
        builder.AddProduct(subscriptionId, ProductType.Subscription);

        UnityPurchasing.Initialize(this, builder);  // 使用新版接口
    }

    public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
    {
        this.controller = controller;
        this.extensions = extensions;
        Debug.Log("IAP 初始化成功");
    }

    public void OnInitializeFailed(InitializationFailureReason error)
    {
        Debug.LogError("IAP 初始化失败: " + error);
    }

    public void OnInitializeFailed(InitializationFailureReason error, string message)
    {
        Debug.LogError($"详细失败信息: {error} - {message}");
    }

    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs args)
    {
        if (args.purchasedProduct.definition.id == subscriptionId)
        {
            Debug.Log("订阅成功！");
            // 解锁功能
        }
        return PurchaseProcessingResult.Complete;
    }

    public void OnPurchaseFailed(Product product, PurchaseFailureDescription failureDescription)
    {
        Debug.LogError($"购买失败: {failureDescription.message}");
    }

    public void OnPurchaseFailed(Product product, PurchaseFailureReason failureReason)
    {
        Debug.LogError($"购买失败: {failureReason}");
    }

    public bool IsSubscribed()
    {
        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;
        }

        Debug.Log("用户未订阅。");
        return false;
    }

    public void BuySubscription()
    {
        if (controller == null) return;

        Product product = controller.products.WithID(subscriptionId);
        if (product != null && product.availableToPurchase)
        {
            controller.InitiatePurchase(product);
        }
        else
        {
            Debug.LogWarning("订阅商品未准备好");
        }
    }

}