using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HDL_ON.Entity;

namespace HDL_ON
{
    public class Packet
    {
        /// <summary>
        /// 缓冲区大小
        /// </summary>
        public const int Size = 1024 + 200;

        /// <summary>
        /// 接收到的数据
        /// </summary>
        public byte[] Bytes;

        /// <summary>
        /// 远程的套接字
        /// </summary>
        public System.Net.EndPoint RemoteEndPoint;

        public Packet()
        {
            this.Bytes = new byte[Size];
            RemoteEndPoint = (System.Net.EndPoint)new System.Net.IPEndPoint(System.Net.IPAddress.Any, 0);
        }
        public Packet(byte[] data, System.Net.EndPoint remoteEndPoint)
        {
            this.Bytes = data;
            this.RemoteEndPoint = remoteEndPoint;
        }

        /// <summary>
        /// 记录已经发送数据出去的时间
        /// </summary>
        public System.DateTime FlagDateTime;

        /// <summary>
        /// 已经发送了多少数
        /// </summary>
        public int HaveSendCount;

        public delegate void DelegateReceive(byte subnetID, byte deviceID, Command command, byte[] usefullBytes, string revGatewayIP);
        public static event DelegateReceive ReceiveEvent;
        /// <summary>
        /// 接收到的所有数据
        /// </summary>
        public static Action<byte, byte, int, Command, byte, byte, byte[], System.Net.IPEndPoint> ReceviceAllDadaAction;
        /// <summary>
        /// 处理接收到的数据
        /// </summary>
        public virtual void Manager()
        {
            if (((System.Net.IPEndPoint)RemoteEndPoint).Port == 6688)
            {
                ReceviceAllDadaAction?.Invoke(0, 0, 0, 0, 0, 0, Bytes, (System.Net.IPEndPoint)RemoteEndPoint);
                Control.ManagerReceive(0, 0, 0, 0, 0, Bytes, (System.Net.IPEndPoint)RemoteEndPoint);
            }
            else
            {
                try
                {
                    //对于操作数据库的时间比较长的，可以创建另一个线程处理
                    if (!"HDLMIRACLE".Equals(System.Text.Encoding.ASCII.GetString(Bytes, 4, 10)))
                    {
                        return;
                    }
                    Control.controlLostCount = 0;

                    byte subnetID = this.Bytes[17]; //源子网号
                    byte deviceID = this.Bytes[18]; //源设备号

                    //源设备类型
                    int deviceType = this.Bytes[19] * 256 + this.Bytes[20];

                    Command command = (Command)(Bytes[21] * 256 + Bytes[22]); //操作码控制命令

                    byte targetSubnetID = this.Bytes[23];
                    byte targetDeviceID = this.Bytes[24];

                    //不是要接收的指令就返回
                    if (!((targetSubnetID == 252 && targetDeviceID == 252) || (targetSubnetID == 0xff && targetDeviceID == 0xff)))
                    {
                        return;
                    }
                    byte[] usefulBytes = null;
                    if (this.Bytes[16] == 0xFF)
                    {
                        usefulBytes = new byte[Bytes.Length - 16 - 11];
                        System.Array.Copy(Bytes, 27, usefulBytes, 0, usefulBytes.Length);
                    }
                    else
                    {
                        //有用的附加数据
                        usefulBytes = new byte[this.Bytes[16] - 11];
                        Array.Copy(Bytes, 25, usefulBytes, 0, usefulBytes.Length);
                    }

                    if (ReceiveEvent != null)
                    {
                        string revIp = $"{Bytes[0]}.{Bytes[1]}.{Bytes[2]}.{Bytes[3]}";
                        if (revIp == "172.16.2.237")
                        {

                        }
                        ReceiveEvent(subnetID, deviceID, command, usefulBytes, revIp);
                    }

                    //if (command == Command.SuperGatewayAgentACK) {
                    //    SuperGateWay.SendAndReceiveDatas.Recevice (subnetID, deviceID, usefulBytes);
                    //}
                    if (ReceviceAllDadaAction != null)
                    {
                        ReceviceAllDadaAction(subnetID, deviceID, deviceType, command, targetSubnetID, targetDeviceID, usefulBytes, (System.Net.IPEndPoint)RemoteEndPoint);
                    }
                    //处理是否要重发数据
                    Control.ManagerReceive(subnetID, deviceID, command, targetSubnetID, targetDeviceID, usefulBytes, RemoteEndPoint);
                }
                catch (Exception ex)
                {
                    MainPage.Log($"packet {ex.Message} ");
                }
            }
        }
    }
}