using NLDPB;
using System;
using PhxhSDK;
using Gameplay;
using System.Text;
using UnityEngine;
using Gameplay.Net;
using Newtonsoft.Json;
using UnityEngine.Networking;
using Cysharp.Threading.Tasks;
using System.Collections.Generic;
using System.Text.RegularExpressions;

public class WXPayHandle : SingletonMono<WXPayHandle>
{
    private static WXPayHandle _instance;

    private void Awake()
    {
        if (_instance == null)
        {
            _instance = this;
            InitWxPay();
            DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }

    void OnApplicationPause(bool pauseStatus)
    {
        if (starPay && !isCallBack && !pauseStatus)
        {
            DebugUtil.Log("用户直接回到应用");
            starPay = false;
            WaitingForServer.Instance.EventDone(WaitingForServer.EventName.Pay);
        }
    }

    private const string PayPost = "orders/wechat";

    [Serializable]
    private class PayRequestData
    {
        public string items;
        public int actor_id;

        public PayRequestData(string items, int actorID)
        {
            this.items = items;
            actor_id = actorID;
        }
    }

    [Serializable]
    private class Items
    {
        public string product_id;
        public int count;
    }

    // 请求结果
    private class WebRequestResult
    {
        public int code;
        public string message;
        public WxData data;
    }

    private class WxData
    {
        public string noncestr;
        public string package;
        public string partnerid;
        public string prepayid;
        public string sign;
        public string timestamp;
    }

    /// <summary>
    /// 是否有回调结果
    /// </summary>
    private bool isCallBack;

    /// <summary>
    /// 开始支付
    /// </summary>
    private bool starPay;

    /// <summary>
    /// 开始支付
    /// </summary>
    public void BuyGoods(string currencyID, int count)
    {
        WaitingForServer.Instance.EventWaiting(WaitingForServer.EventName.Pay, false);
        starPay = true;
        WxPayRequest(currencyID, count);
    }

    /// <summary>
    /// 请求服务器
    /// </summary>
    private async void WxPayRequest(string currencyID, int count)
    {
        var actorID = (int)Actor.Instance.Base.GetProp(ActorProp.ActorId);
        var payUrl = AppConfig.Instance.LoginURL + PayPost;
        DebugUtil.Log("发送拉起微信支付请求地址: " + payUrl);

        var itemsList = new List<Items> { new() { product_id = currencyID, count = count } };
        var itemJsonData = JsonConvert.SerializeObject(itemsList);
        DebugUtil.Log("items.jsonData:{0}", itemJsonData);

        PayRequestData sendData = new PayRequestData(itemJsonData, actorID);
        var headData = PostHeader.PostHeaderInfo(new Dictionary<string, string>
        {
            { "items", sendData.items },
            { "actor_id", sendData.actor_id.ToString() },
            { "timestamp", DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString() }
        });

        var jsonData = JsonUtility.ToJson(sendData);
        DebugUtil.Log("WebRequestData.jsonData:{0}", jsonData);
        var bytes = Encoding.UTF8.GetBytes(jsonData);

        var www = new UnityWebRequest(payUrl, UnityWebRequest.kHttpVerbPOST)
        {
            uploadHandler = new UploadHandlerRaw(bytes),
            downloadHandler = new DownloadHandlerBuffer(),
        };
        www.SetRequestHeader("Content-Type", "application/json;charset=utf-8"); //为了保证客户端发送的json格式在后端能解析
        www.SetRequestHeader("signature", headData["signature"]);
        www.SetRequestHeader("timestamp", headData["timestamp"]);
        www.SetRequestHeader("accessKey", headData["accessKey"]);

        try
        {
            await www.SendWebRequest();
            if (www.result != UnityWebRequest.Result.Success)
            {
                CommonUtils.ShowMessageTips("支付失败，请重试");
                DebugUtil.LogError(www.downloadHandler.text);
            }
            else
            {
                DebugUtil.Log("http消息请求成功！\n返回内容：" + www.downloadHandler.text);
                WebRequestResult result = JsonConvert.DeserializeObject<WebRequestResult>(www.downloadHandler.text);
                if (result.code == 0)
                {
                    BuyGoods(result.data);
                    DebugUtil.Log("拉起微信支付SDK成功");
                }
                else
                {
                    DebugUtil.LogError("拉起微信支付SDK失败");
                    UITipsManager.ShowTips("支付失败，请重试");
                    WaitingForServer.Instance.EventDone(WaitingForServer.EventName.Pay);
                }
            }
        }
        catch (UnityWebRequestException e)
        {
            DebugUtil.LogError(e);
            var pattern = @"\{.*\}";
            var match = Regex.Match(e.Message, pattern);
            if (match.Success)
            {
                var json = match.Value;
                WebRequestResult res = JsonConvert.DeserializeObject<WebRequestResult>(json);
                DebugUtil.LogError("请求失败, 服务器有错误响应: " + res.message);
                UITipsManager.ShowTips("无法购买");
            }
            else
            {
                UITipsManager.ShowTips("无法购买");
                DebugUtil.LogError("请求失败！");
            }

            WaitingForServer.Instance.EventDone(WaitingForServer.EventName.Pay);
        }
    }

    #region 与微信通信

    private const string AppID = "wxa286fb2f1bcb664c"; // AppID
    private const string PayMethodName = "WxPayByApp"; // 调起微信支付的方法
    private const string InitMethodName = "WechatInit"; // 调起微信初始化方法
    private const string WxAndroidClassName = "com.phxh.official.nld.wx.MainActivity";
    private AndroidJavaObject utils;
    
    /// <summary>
    /// 初始化WXPay
    /// </summary>
    private void InitWxPay()
    {
        try
        {
            DebugUtil.Log("开始初始化微信支付");
            using AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
            var currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
            utils = new AndroidJavaObject(WxAndroidClassName);
            utils.Call(InitMethodName, currentActivity);
        }
        catch (Exception e)
        {
            DebugUtil.Log("初始化微信支付异常:{0}", e);
        }
    }

    public bool CheckWxInit()
    {
        try
        {
            if (utils == null)
                return false;
            var result = utils.Call<bool>("IsWechatInstalled");
            return result;
        }
        catch (Exception e)
        {
            DebugUtil.LogError("WxPayHandle.CheckWxInit Error, e:{0} ", e);
            return false;
        }
    }

    /// <summary>
    /// 支付回调
    /// </summary>
    public void WxPayCallback(string str)
    {
        // 返回结果 0 成功
        // -1 错误 可能的原因：签名错误、未注册APPID、项目设置APPID不正确、注册的APPID与设置的不匹配、其他异常原因等
        // -2 用户取消
        try
        {
            starPay = false;
            isCallBack = true;
            DebugUtil.Log("微信支付回调, 结果码:{0}", str);

            if (int.TryParse(str, out var code))
            {
                switch (code)
                {
                    case -2:
                        UITipsManager.ShowTips("取消支付");
                        break;
                    case -1:
                        UITipsManager.ShowTips("支付失败，请重试");
                        break;
                }
            }

            UIManager.Instance.CloseWindow(UINameConst.UI_Pay);
            WaitingForServer.Instance.EventDone(WaitingForServer.EventName.Pay);
        }
        catch (Exception e)
        {
            DebugUtil.LogError("WXPayHandle.WxPayCallback error:{0}", e);
            WaitingForServer.Instance.EventDone(WaitingForServer.EventName.Pay);
        }
    }

    private void BuyGoods(WxData wxData)
    {
        if (wxData == null)
        {
            DebugUtil.LogError("请求支付数据为空");
            return;
        }

        isCallBack = false;

        // PayMethodName // 支付方法
        // req.appId = APP_ID; // 应用ID
        // req.partnerId = MCH_ID; // 商户号
        // req.prepayId = prepayid; // 预支付交易会话ID
        // req.packageValue = packageValue; // 包名
        // req.nonceStr = noncaestr; // 随机字符串
        // req.timeStamp = timestamp; // 时间戳
        // req.sign = sign; // 签名
        // WXPayEntryActivity.GameObjectName = callBackObjectName; // 支付回调组件
        // WXPayEntryActivity.CallBackFuncName = CallBackFuncName; // 支付回调方法
        DebugUtil.Log("开始调起微信支付");
        utils.Call(PayMethodName, AppID, wxData.partnerid, wxData.prepayid, wxData.package, wxData.noncestr,
            wxData.timestamp, wxData.sign, "WXPayHandle",
            "WxPayCallback");
    }

    #endregion
}