using System;
using System.Collections.Generic;
using System.Data;
using System.Security.Cryptography.Pkcs;
using System.Text;
using System.Text.Json;
using System.Windows;
using System.Windows.Markup;
using System.Xml.Linq;
using TouchSocket.Core;
using TouchSocket.Sockets;
using static System.Runtime.InteropServices.JavaScript.JSType;

namespace ForwardingServerUI.Class
{
    public class AsyncTcpServer
    {
        public class Personm
        {
            public required string SERVEREnterprise { get; set; }
            public required string SERVERMachineName { get; set; }
            public required string SERVERNAME { get; set; }
            public required string SERVERUSER { get; set; }
            public required string SERRVERPASWORD { get; set; }
            public required string MachineVer { get; set; }
        }

        private static Timer? _timer;
        public static TcpService service = new TcpService();

        public static async Task TcpMain()
        {
            service.Connecting = (client, e) => { return EasyTask.CompletedTask; };//有客户端正在连接
            service.Connected = (client, e) => { return EasyTask.CompletedTask;};//有客户端成功连接
            service.Closing = (client, e) => { return EasyTask.CompletedTask; };//有客户端正在断开连接，只有当主动断开时才有效。
            service.Closed =  (client, e) => {
                //离线记录

                Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "] NOT ID " +
                    client.Id + " IP " + client.IP);

                DataRow[] dat = MainWindowViewModel._machineTable.Select("ID='"+client.Id+"'");
                foreach (DataRow row in dat)
                {
                    Application.Current.Dispatcher.Invoke(() => {
                        MainWindowViewModel._machineTable.Rows.Remove(row);
                    });

                    Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "] NOT LINK ID = " +
                          row["ID"] + " IP = " + row["IP"] + " Enterprise = " + row["Enterprise"] +
                          " MachineName = " + row["MachineName"]);
                }               
                return EasyTask.CompletedTask; 
            };//有客户端断开连接
            service.Received = (client, e) =>{                
                string DAT = e.Memory.Span.ToString(Encoding.UTF8);
                try
                {
                    if (DAT.Length > 5)
                    {
                        DataRow[] r_ = MainWindowViewModel._machineTable.Select("ID='" + client.Id + "'");
                        if (r_.Length > 0)
                        {
                            int? s_ = r_.First().Field<int?>("Start");

                            if (s_ == 30)
                            {
                                string trimmedDat = DAT.Trim();
                                if (!string.IsNullOrEmpty(trimmedDat) &&
                                    (trimmedDat[0] == '{' || trimmedDat[0] == '['))
                                {
                                    MainWindowViewModel.Person deserializedPerson = JsonSerializer.Deserialize<MainWindowViewModel.Person>(trimmedDat)!;
                                    
                                    //转发逻辑
                                    var dr = MainWindowViewModel._userTable.Select("Terminal='" + deserializedPerson.Terminal + "'");
                                    if (dr.Length > 0)
                                    {
                                        DataRow drEmployee = dr.First();
                                        drEmployee.BeginEdit();
                                        drEmployee["RDAT"] = trimmedDat;
                                        drEmployee.EndEdit();
                                        drEmployee.AcceptChanges();
                                    }
                                }

                            }
                            else if (s_ == 90)
                            { }
                            Application.Current.Dispatcher.Invoke(() =>
                            {
                                DataRow drEmployee = r_.First();
                                drEmployee.BeginEdit();
                                drEmployee["HeartbeatTime"] = DateTime.Now.ToString();
                                drEmployee.EndEdit();
                                drEmployee.AcceptChanges();
                            });
                        }
                        else
                        {
                            Personm deserializedPerson = JsonSerializer.Deserialize<Personm>(DAT)!;
                            Application.Current.Dispatcher.Invoke(() =>
                            {
                                var mach = MainWindowViewModel._machineTable.Select("Enterprise='" + deserializedPerson.SERVEREnterprise +
                                   "'and MachineName='" + deserializedPerson.SERVERMachineName + "'");
                                if (mach.Length > 0)
                                {
                                    //刷新设备信息表
                                    DataRow dataRow = mach.First();
                                    dataRow.BeginEdit();
                                    dataRow["ID"] = client.Id;
                                    dataRow["IP"] = client.IP;
                                    dataRow["Start"] = 30;
                                    dataRow["Enterprise"] = "/" + deserializedPerson.SERVEREnterprise;
                                    dataRow["MachineName"] = deserializedPerson.SERVERMachineName;
                                    dataRow["MachineVer"] = deserializedPerson.MachineVer;
                                    dataRow.EndEdit();
                                    dataRow.AcceptChanges();
                                }
                                else
                                {
                                    //添加设备信息表
                                    MainWindowViewModel._machineTable.Rows.Add(client.Id, client.IP, 30, "/" + deserializedPerson.SERVEREnterprise,
                                        deserializedPerson.SERVERMachineName, DateTime.Now.ToString(), deserializedPerson.MachineVer);
                                }
                            });
                            Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + " LINK ID " + client.Id + " IP " + client.IP + "]\nDATA =" + DAT);

                        }
                    }
                }
                catch (Exception ex)
                {//错误
                    Console.WriteLine("Tcp:" + ex.ToString());
                    LogGing.ERRDATA(ex);
                }

                return EasyTask.CompletedTask;
            };


            await service.SetupAsync(new TouchSocketConfig()//载入配置
                                                            //  .SetMaxBufferSize(1024 * 1024 * 100)
                                                            //.SetMinBufferSize(1024 * 1024)
                 .SetSingleStreamDataHandlingAdapter(() => new PeriodPackageAdapter())//以超时周期和包
                .SetListenIPHosts(new IPHost[] { new IPHost(7794), new IPHost(7795) })//同时监听两个地址
                .ConfigureContainer(a =>//容器的配置顺序应该在最前面
                {
                })
                .ConfigurePlugins(a =>
                {
                })
                );
            
            await service.StartAsync();//启动

            Console.WriteLine("TcpServer:Run");

            //启动检查循环定时器
            _timer = new Timer(TimerCallback, null, TimeSpan.FromSeconds(90), TimeSpan.FromSeconds(30));
        }

        private static async void TimerCallback(object? state)
        {
            try
            {
                int rows = MainWindowViewModel._machineTable.Rows.Count;
                for (int i = rows; i > 0; i--)
                {
                    DataRow dataRow = MainWindowViewModel._machineTable.Rows[i-1];
                    DateTime dateTime = DateTime.Parse(dataRow["HeartbeatTime"].ToString()!);
                    if (DateTime.Now > dateTime.AddSeconds(180))
                    {
                        Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "] NOT LINK ID = " +
                            dataRow["ID"] + " IP = " + dataRow["IP"] + " Enterprise = " + dataRow["Enterprise"] + 
                            " MachineName = " + dataRow["MachineName"] );

                        //关闭无回应连接
                        foreach (var item in service.Clients)
                        {
                            if (item.Id == dataRow["ID"].ToString())
                            {
                                await item.CloseAsync();

                                //在断开连接后，释放对象。
                                item.Dispose();
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                LogGing.ERRDATA(ex);
            }
        }

    }      
}