using System;
using UnityEngine;
using System.Collections.Generic;
using System.Collections.Concurrent;
using System.Collections;
using UnityEngine.Networking;

public class SystemProxy : ProxyBase<SystemProxy>
{
    public SystemProxy() => this.opeCode = OpeCode.ope_system;

    /// <summary>
    /// [6901]请求系统推送的消息
    /// </summary> 
    /// <param name="ts">时间戳</param>
    /// <param name="callback">成功回调(无返回参数)</param>
    public void Request(uint ts, Action<SystemProxyRetVo> callback)
    {
        if (SystemProxy.heartBeatTag)
        {
            Post<SystemProxyRetVo>(CmdCode.cmd_systemMessage, new object[] { ts }, callback);
        }
        else
        {
            callback.Invoke(new SystemProxyRetVo());
        }


    }

    /// <summary>
    /// [6902]上报
    /// </summary> 
    /// <param name="ts">时间戳</param>
    /// <param name="callback">成功回调(无返回参数)</param>
    [Obsolete("功能不完善,封", true)]
    public void ReportStatLog(string eventID, string EArgKey, string EArgValue, Action callback, Action onfail)
    {
        var player = UserProxy.Instance.player;
        var uid = player?.uid ?? "stat";
        var zoneid = player?.zoneid ?? 1;

        Post(CmdCode.cmd_systemStatLogReport, uid, zoneid, new object[] { eventID, EArgKey, EArgValue },
         resp => callback?.Invoke(),
          o => onfail?.Invoke()
         );
    }


    /// <summary>
    /// [6903]客户端心跳包
    /// </summary>
    /// <param name="callback"></param>
    public void Heartbeat(Action<int> callback)
    {
        var ts = UserProxy.Instance.GetCurrentUnixTimeStamp();
        Post(CmdCode.cmd_sysemHeartbeat, new object[] { }, resp =>
        {
            var delay = UserProxy.Instance.GetCurrentUnixTimeStamp() - ts;
            callback?.Invoke((int)delay);
        });
    }

    public static bool heartBeatTag = false;

    /// <summary>
    /// 心跳包引擎
    /// </summary>
    public class HearbeatBehavor : MonoSingleton<HearbeatBehavor>
    {
        private float ts = 0;
        private void FixedUpdate()
        {
            ts += Time.deltaTime;
            if (ts > 30)
            {
                ts = 0;

                if (heartBeatTag)
                {
                    SystemProxy.Instance.Heartbeat(delay =>
                    {
                        if (delay > 0)
                        {
                            LogHelper.LogWarning($"通讯延时大概{delay}秒");
                        }
                    });
                }

            }

        }
        public void Start() { }  // 
    }

}


/// <summary>
/// 统计辅助类
/// </summary>
class StatHelper : MonoSingleton<StatHelper>
{
    class EventLog
    {
        public string EventID;
        public string EArgKey;
        public string EArgValue;

        public string UID = "-";
        public string zoneid = "0";

    }

    // private Dictionary<string,KeyValuePair<string,string>> statLogs = new Dictionary<string, KeyValuePair<string, string>>();

    private ConcurrentQueue<EventLog> statLogs = new ConcurrentQueue<EventLog>();

    /// <summary>
    /// 添加自定义事件
    /// </summary>
    /// <param name="eventID">事件ID</param>
    /// <param name="EArgKey">事件参数-key</param>
    /// <param name="EArgValue">事件参数-value</param>
    public void AddEvent(string eventID, string EArgKey, string EArgValue)
    {
        var e = new EventLog() { EventID = eventID, EArgKey = EArgKey, EArgValue = EArgValue };
        if (null != UserProxy.Instance.player)
        {
            e.UID = UserProxy.Instance.player.uid;
            e.zoneid = UserProxy.Instance.player.zoneid.ToString();
        }
        statLogs.Enqueue(e);
    }
    private static int retryTimes = 0;
    private void Update()
    {
        if (statLogs.TryDequeue(out var item) && retryTimes < 3)
        {
            var url = Config_URL.Server_URL + "service_call/InquireApi/ReportStatLog.php";
            var li = new List<KeyValuePair<string, string>>();
            li.Add(new KeyValuePair<string, string>(nameof(item.EventID), item.EventID));
            li.Add(new KeyValuePair<string, string>(nameof(item.EArgKey), item.EArgKey));
            li.Add(new KeyValuePair<string, string>(nameof(item.EArgValue), item.EArgValue));
            li.Add(new KeyValuePair<string, string>(nameof(item.UID), item.UID));
            li.Add(new KeyValuePair<string, string>(nameof(item.zoneid), item.zoneid));
            HttpHelper.Instance.Post(url, li,
            str =>
            {                // 成功
            },
            err =>
            {                // 失败
                retryTimes++;
                statLogs.Enqueue(item);          // 再重新发一次好了
            });
        }
    }


    /// <summary>
    /// HTTP辅助类
    /// </summary>
    public class HttpHelper : MonoSingleton<HttpHelper>
    {
        public void Get(string url, Action<string> OnResult, Action<string> OnErr)
        {
            StartCoroutine(GetRequest(url, OnResult, OnErr));
        }
        public void Post(string url, List<KeyValuePair<string, string>> paras, Action<string> OnResult, Action<string> OnErr)
        {
            // CoroutineWrapper.Instance.EXEDelayFrames();
            StartCoroutine(PostRequest(url, paras, OnResult, OnErr));
        }

        #region '  网络下载功能  '
        // todo: 这里考虑增设cache设计,扩展下载和缓存功能.
        //       对于这种资源没必要每次都完整下载,这样多浪费啊,都是钱啊.
        //       -by gwang 2017年1月20日 16:41:17
        //   经验证: 在WWW中加入header if-modified-since字段可以得倒304(Nginx服务器,资源为txt类型)
        //         后续需要做的是一个文件管理系统,管理本地缓存文件的时间戳.
        //         当调用下载的时候,先检查缓存中的文件,拿到本地时间戳(FileInfo.LastWriteTimeUtc.ToString("r")),然后请求服务器,
        //         这样,虽然每次都请求了,但是不必每次都下发完整的文件,如果没有更新的情况下,只需返回304即可.
        #endregion
        //
        #region   私有方法
        IEnumerator GetRequest(string url, Action<string> OnResult, Action<string> OnErr)
        {
            using (UnityWebRequest webRequest = UnityWebRequest.Get(url))
            {
                yield return webRequest.SendWebRequest();
                if (!string.IsNullOrEmpty(webRequest.error))
                {
                    OnErr?.Invoke(webRequest.error);
                }
                else
                {
                    OnResult?.Invoke(webRequest.downloadHandler.text);
                }
            }
        }

        ///
        IEnumerator PostRequest(string url, List<KeyValuePair<string, string>> paras, Action<string> OnResult, Action<string> OnErr)
        {
            WWWForm form = new WWWForm();
            paras.ForEach(kv => form.AddField(kv.Key, kv.Value));                                   // 压入参数 
            using (UnityWebRequest webRequest = UnityWebRequest.Post(url, form))
            {
                yield return webRequest.SendWebRequest();
                if (!string.IsNullOrEmpty(webRequest.error))
                {
                    OnErr?.Invoke(webRequest.error);
                }
                else
                {
                    OnResult?.Invoke(webRequest.downloadHandler.text);
                }
            }
        }
        #endregion

    }
}