using JsonRpcLite.Network;
using JsonRpcLite.Rpc;
using Newtonsoft.Json;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net.NetworkInformation;
using System.Threading;
using System.Threading.Tasks;
using Vinno.IUS.Common.Log;
using Vinno.vCloud.Common.FIS.Helper;
using WingInterfaceLibrary.DTO.ServerInfo;
using WingInterfaceLibrary.Interface;
using WingInterfaceLibrary.Request.FastestServer;

namespace Vinno.vCloud.Common.FIS
{
    public class vCloudTerminalBuilderV2
    {
        /// <summary>
        /// connect default server before get terminal connection  faster address info  from address info list
        /// if get null ,can not connected to internet
        /// </summary>
        /// <returns></returns>
        public static ServerInfo GetFasterServer(string filePath = null)
        {
            try
            {
                string settingFilePath = AppDomain.CurrentDomain.BaseDirectory;
                if (string.IsNullOrEmpty(settingFilePath))
                {
                    if (!string.IsNullOrEmpty(filePath))
                    {
                        settingFilePath = filePath;
                    }
                    else
                    {
                        return null;
                    }
                }
                ServerInfo fasterServer = null;
                var speedResults = new ConcurrentDictionary<ServerInfo, int>();
                var serverFilePath = Path.Combine(settingFilePath, "FISServerSettingsV2.conf");
                DefaultServerSettings serverSettings = null;
                //serverSettings = GetFasterServerList(true);
                if (serverSettings == null)
                {
                    if (File.Exists(serverFilePath))
                    {
                        var stringValue = File.ReadAllText(serverFilePath);
                        serverSettings = JsonConvert.DeserializeObject<DefaultServerSettings>(stringValue);
                    }
                    if (serverSettings == null)
                    {
                        serverSettings = new DefaultServerSettings
                        {
                            Servers = new List<ServerInfo>
                            {
                                 new ServerInfo { Host = "bj.flyinsono.com", Port = 443 },
                                 new ServerInfo { Host = "hk.flyinsono.com", Port = 443 },
                                 new ServerInfo { Host = "fra.flyinsono.com", Port = 443 },
                            },
                            MasterServer = new ServerInfo { Host = "hk.flyinsono.com", Port = 443 }
                        };
                    }
                }
                Parallel.ForEach(serverSettings.Servers, serverInfo =>
                {
                    var speed = GetConnectServerSpeed(serverInfo.Host);
                    if (speed != -1)
                    {
                        speedResults.TryAdd(serverInfo, speed);
                    }
                });
                if (speedResults.Count == 0)
                {
                    fasterServer = serverSettings.MasterServer;
                }
                else
                {
                    foreach (var result in speedResults)
                    {
                        if (fasterServer == null)
                        {
                            fasterServer = result.Key;
                        }
                        else
                        {
                            if (speedResults[fasterServer] > result.Value)
                            {
                                fasterServer = result.Key;
                            }
                        }
                    }
                }
                Logger.WriteLineInfo($"Get faster server is {fasterServer.Host}:{fasterServer.Port}");
                return fasterServer;
            }
            catch (Exception ex)
            {
                Logger.WriteLineError($"Get faster server error: {ex}");
            }

            return new ServerInfo { Host = "hk.flyinsono.com", Port = 443 };
        }

        private static DefaultServerSettings GetFasterServerList(bool isUseHttps = true)
        {
            try
            {
                string prefix;
                if (isUseHttps)
                {
                    prefix = "https://";
                }
                else
                {
                    prefix = "http://";
                }
                using (var client = new JsonRpcClient())
                {
                    var clientEngine = new JsonRpcHttpClientEngine($"{prefix}hk.flyinsono.com:443");
                    client.UseEngine(clientEngine);
                    var vinnoServerService = client.CreateProxy<IVinnoServerService>(6000);
                    var queryServerInfoRequest = new QueryServerInfoRequest();
                    List<ServerInfoDTO> result = JsonRpcHelper.GetServerInfoList(vinnoServerService, queryServerInfoRequest);
                    if (result == null || result.Count == 0)
                    {
                        return null;
                    }
                    string host;
                    int port = 443;
                    var serverSetting = new DefaultServerSettings() { Servers = new List<ServerInfo>() };
                    foreach (var server in result)
                    {
                        var serverArray = server.Host.Split(':');
                        if (serverArray.Length == 1)
                        {
                            host = serverArray[0];
                        }
                        else if (serverArray.Length == 2)
                        {
                            host = serverArray[0];
                            int.TryParse(serverArray[1], out port);
                        }
                        else
                        {
                            throw new Exception($"Server Info Format is invalid:{server.Host}");
                        }
                        var serverInfo = new ServerInfo() { Host = host, Port = port };
                        if (serverSetting.MasterServer == null)
                        {
                            serverSetting.MasterServer = serverInfo;
                        }
                        serverSetting.Servers.Add(serverInfo);
                    }
                    return serverSetting;
                }
            }
            catch (Exception ex)
            {
                Logger.WriteLineError($"vCloudTerminalBuilder2 GetFasterServerList Error:{ex}");
                return null;
            }
        }

        /// <summary>
        /// Connect to server
        /// </summary>
        /// <param name="connectionInfo">The connection Info</param>
        /// <returns></returns>
        public IvCloudTerminalV2 Connect(ConnectionInfo connectionInfo, bool isUseHttps, bool isUseOldTerminalSdk, string uniqueId, string terminalId)
        {
            if (string.IsNullOrEmpty(connectionInfo?.Account?.Name) || string.IsNullOrEmpty(connectionInfo?.Account?.Password))
            {
                return null;
            }

            var terminalV2 = new vCloudTerminalV2(connectionInfo, isUseHttps, isUseOldTerminalSdk);
            try
            {
                terminalV2.Connect(uniqueId, terminalId);
            }
            catch (Exception e)
            {
                Logger.WriteLineError($"Termnial Login ex:{e}");
            }

            return terminalV2;
        }

        /// <summary>
        /// Register Account
        /// </summary>
        /// <param name="connectionInfo"></param>
        /// <returns></returns>
        public bool Register(ConnectionInfo connectionInfo)
        {
            return false;
        }

        /// <summary>
        /// test connet server speed
        /// </summary>
        /// <param name="serverUrl"></param>
        /// <returns></returns>
        private static int GetConnectServerSpeed(string serverUrl)
        {
            try
            {
                using (var ping = new Ping())
                {
                    var successTimes = 0;
                    var totalTime = 0;
                    for (var i = 0; i < 4; i++)//第一次为预热
                    {
                        try
                        {
                            var reply = ping.Send(serverUrl, 3000);
                            if (reply.Status == IPStatus.Success && i > 0)
                            {
                                Logger.WriteLineInfo($"Connect serverUrl:{serverUrl}, spend time:{reply.RoundtripTime}ms");
                                totalTime += (int)reply.RoundtripTime;
                                successTimes++;
                            }
                        }
                        catch (Exception ex)
                        {
                            Logger.WriteLineError($"Connect serverUrl:{serverUrl} error, Exception:{ex}");
                            continue;
                        }
                    }
                    if (successTimes == 0)
                    {
                        Logger.WriteLineInfo($"Connect serverUrl:{serverUrl} fail, the success times is 0");
                        return -1;
                    }
                    else
                    {
                        var averageValue = totalTime / successTimes;
                        Logger.WriteLineInfo($"Connect serverUrl:{serverUrl},successTimes:{successTimes},spend time averageValue:{averageValue}ms");
                        return averageValue;
                    }
                }
            }
            catch (Exception e)
            {
                Logger.WriteLineError($"Connect Server:{serverUrl}, SpeedTest exception:{e}");
                return -1;
            }
        }

        /// 多个服务器会报错同时用Jsonrpc会报错
        /// <summary>
        /// test connet server speed
        /// </summary>
        /// <param name="serverUrl"></param>
        /// <returns></returns>
        private static int OldGetConnectServerSpeed(string serverUrl, bool isUseHttps = true)
        {
            try
            {
                var prefix = "http://";
                if (isUseHttps)
                {
                    prefix = "https://";
                }
                using (var client = new JsonRpcClient())
                {
                    var clientEngine = new JsonRpcHttpClientEngine($"{prefix}{serverUrl}");
                    client.UseEngine(clientEngine);
                    var vinnoServerService = client.CreateProxy<IVinnoServerService>(5000);
                    var stopWatch = new Stopwatch();
                    var successTimes = 0;
                    var totalTime = 0;
                    for (var i = 0; i < 4; i++)//第一次为预热
                    {
                        if (i > 0)
                        {
                            Thread.Sleep(1000);
                        }

                        stopWatch.Restart();
                        try
                        {
                            var result = JsonRpcHelper.Echo(vinnoServerService);
                            stopWatch.Stop();
                            if (result != null && result.Code == 0 && i > 0)
                            {
                                Logger.WriteLineInfo($"Connect serverUrl:{serverUrl}, spend time:{stopWatch.ElapsedMilliseconds}ms");
                                totalTime += (int)stopWatch.ElapsedMilliseconds;
                                successTimes++;
                            }
                        }
                        catch (Exception ex)
                        {
                            stopWatch.Stop();
                            Logger.WriteLineError($"Connect serverUrl:{serverUrl} error, Exception:{ex}");
                            continue;
                        }
                    }
                    if (successTimes == 0)
                    {
                        Logger.WriteLineInfo($"Connect serverUrl:{serverUrl} fail, the success times is 0");
                        return -1;
                    }
                    else
                    {
                        var averageValue = totalTime / successTimes;
                        Logger.WriteLineInfo($"Connect serverUrl:{serverUrl},successTimes:{successTimes},spend time averageValue:{averageValue}ms");
                        return averageValue;
                    }
                }
            }
            catch (Exception e)
            {
                Logger.WriteLineError($"Connect Server:{serverUrl}, SpeedTest exception:{e}");
                return -1;
            }
        }
    }
}