// ***********************************************************************
// Assembly         : Game
// Author           : Kimch
// Created          : 2021-05-22
// Description      :
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "AntiCheatProxy" company="Kunpo"></copyright>
// <summary></summary>
// ***********************************************************************

using CodeStage.AntiCheat.Detectors;
using F;
using UnityEngine;
using UnityEngine.Networking;

namespace G
{
    /// <summary>
    /// 反外挂
    /// </summary>
    public class AntiCheatProxy : GameProxy
    {
        #region Field

        Callback2 _callback;
        System.DateTime _lastCheckDateTime;

        #endregion

        #region Property	

        /// <summary>
        /// 
        /// </summary>
        public bool isCheat
        {
            get { return isCheatMemory || isCheatTime; }
        }

        /// <summary>
        /// 
        /// </summary>
        public bool isCheatTime
        {
            get
            {
#if UNITY_EDITOR || DEBUG_MY
                return false;
#else
				return this.elapseSecond > 300;// || TimeCheatingDetector.Instance.LastResult != TimeCheatingDetector.CheckResult.CheckPassed;
#endif
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public bool isCheatMemory
        {
            get;
            private set;
        }

        /// <summary>
        /// 
        /// </summary>
        public double elapseSecond
        {
            get
            {
                return System.Math.Abs((System.DateTime.UtcNow - _lastCheckDateTime).TotalSeconds);
            }
            set { _lastCheckDateTime = System.DateTime.UtcNow.AddSeconds(value); }
        }

        #endregion

        #region Method

        public override void Init()
        {
        }

        private void MemoryDetector_CheatChecked()
        {
            isCheatMemory = true;
        }

        public bool SetServerTimestamp(int timestamp)
        {
            if (Mathf.Abs(Launch.LocalTimestamp - timestamp) < 1800)
            {
                Debug.Log("时间校验通过");
                this.elapseSecond = 0;
                return true;
            }
            return false;
        }

        /// <summary>
        /// 检查在线时间
        /// </summary>
        /// <param name="callback"></param>
        /// <returns>false 回调函数</returns>
        public bool CheckCheat(Callback2 callback)
        {
            if (this.isCheatMemory)
            {
                callback?.Invoke(ErrorCode.MEMORY_CHEAT, "使用第三方修改工具,会导致封号.");
                return false;
            }

            if (this.isCheatTime)
            {
                _callback = callback;
                //TimeCheatingDetector.Instance.ForceCheck();
#if SDK_WECHAT_WASM
				RequestServer();
#else
                StartCoroutine(Request());
#endif
                return false;
            }
            callback?.Invoke(0, "");
            return true;
        }

        void RequestServer()
        {
            if (ServerProxy.Instance && ServerProxy.Instance.isLoginSuccess)
            {
                ServerProxy.Instance.GetTimestamp((error, message) =>
                {
                    if (!this.isCheatTime)
                    {
                        _callback?.Invoke(0, "");
                    }
                    else
                    {
                        _callback?.Invoke(ErrorCode.TIME_CHEAT, "请检查时间设置");
                    }
                });
            }
            else
            {
                _callback?.Invoke(ErrorCode.TIME_OFFLINE, "");
            }
        }

        System.Collections.IEnumerator Request()
        {
            var webRequest = UnityWebRequest.Get("https://cloud.ohayoo.cn/api/v1/init/time");
            webRequest.timeout = 5;
            yield return webRequest.SendWebRequest();
            if (!webRequest.isNetworkError && !webRequest.isHttpError)
            {
                var jsonTable = F.Utils.ToJsonTable(webRequest.downloadHandler.data);
                if (jsonTable != null)
                {
                    int status = jsonTable.GetInt("status", -1);
                    if (status == 0)
                    {
                        int timestamp = jsonTable.GetInt("server_timestamp");
                        Launch.SetServerTimestamp(timestamp);
                        if (SetServerTimestamp(timestamp))
                        {
                            _callback?.Invoke(0, "");
                        }
                        else
                        {
                            _callback?.Invoke(ErrorCode.TIME_CHEAT, "请检查时间设置");
                        }
                    }
                }
            }
        }

        #endregion

        #region Proxy

        static AntiCheatProxy _Instance;
        public static AntiCheatProxy Instance => _Instance;

        private void Awake()
        {
            _Instance = this;
        }

        private void Start()
        {
            ObscuredCheatingDetector.StartDetection(this.MemoryDetector_CheatChecked);
        }

        float _lastUpdateTime;
        public override void UpdatePerSecond()
        {
            if (Time.realtimeSinceStartup - _lastUpdateTime > 100)
            {
                _lastUpdateTime = Time.realtimeSinceStartup;
#if SDK_WECHAT_WASM
				RequestServer();
#else
                StartCoroutine(Request());
#endif
            }
        }

        #endregion
    }
}