using HighWayIot.Repository.domain;
using HighWayIot.Repository.service.Impl;
using HighWayIot.TouchSocket.Entity;
using Org.BouncyCastle.Crypto;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace HighWayIot.TouchSocket
{
    /// <summary>
    /// 消息工厂
    /// </summary>
    public class MessageFactory
    {
        private static readonly Lazy<MessageFactory> lazy = new Lazy<MessageFactory>(() => new MessageFactory());

        public static MessageFactory Instance => lazy.Value;

        private ServerBufferAnalysis serverBufferAnalysis = ServerBufferAnalysis.Instance;

        public Action<byte[], string> MessegeSend;

        /// <summary>
        /// 消息分类工厂
        /// </summary>
        public void Factory(BaseMessagePack messagePack, string id)
        {
            if (messagePack == null)
            {
                return;
            }
            int functionCode = BitConverter.ToUInt16(messagePack.FunctionCode, 0);
            if (functionCode == 0) //心跳报文
            {
                HeartbeatProcess(messagePack, id);
            }
            if (functionCode == 1) //连接注册请求报文
            {
                RegisterProcess(messagePack, id);
                FirstHeartbeat(id); 
            }
            if (functionCode == 600) //读码报文接收
            {
                ReadCodeReportProcess(messagePack, id);
            }
            if (functionCode == 610) //状态上报报文
            {
                StateReportProcess(messagePack, id);
            }
        }

        /// <summary>
        /// 心跳报文处理
        /// </summary>
        private void HeartbeatProcess(BaseMessagePack messagePack, string id)
        {
            //数据库操作

            if (BaseHeartbeatServiceImpl.Instance.UpdateHeartbeatInfo(id) == 0)
            {
                RFIDHeartbeat heartbeat = new RFIDHeartbeat()
                {
                    LineNo = id,
                    BeatTime = DateTime.Now,
                };
                BaseHeartbeatServiceImpl.Instance.AddHeartbeatInfo(heartbeat);
            }

            //反馈
            MessegeSend.Invoke(
                serverBufferAnalysis.BasePackedServerBufferAnalysis(
                    HeartbeatResponse(messagePack)
                    ),
                id);
        }

        /// <summary>
        /// 注册报文处理
        /// </summary>
        private void RegisterProcess(BaseMessagePack messagePack, string id)
        {
            //直接反馈
            MessegeSend.Invoke(
                serverBufferAnalysis.BasePackedServerBufferAnalysis(
                    StandardResponse(messagePack)
                    ),
                id);
        }

        /// <summary>
        /// 读码应答报文处理
        /// </summary>
        private void ReadCodeReportProcess(BaseMessagePack messagePack, string id)
        {
            //存数据库，无需反馈
            //解析数据内容
            RFIDContent rfidContent = new RFIDContent();
            int index = 0;
            index += 4;

            byte[] temp = new byte[2];
            Array.Copy(messagePack.DataContent, index, temp, 0, 2);
            Array.Reverse(temp);
            rfidContent.DeviceNo = BitConverter.ToUInt16(temp, 0);
            index += 2;

            rfidContent.ReadKind = ASCIIEncoding.UTF8.GetString(messagePack.DataContent, index, 2);
            index += 2;

            int length = messagePack.DataContent[index];
            index++;

            rfidContent.Content = ASCIIEncoding.UTF8.GetString(messagePack.DataContent, index, length);

            rfidContent.LineNo = id;

            rfidContent.LogTime = DateTime.Now;

            BaseContentServiceImpl.Instance.AddContentInfo(rfidContent);
        }

        /// <summary>
        /// 状态上报报文处理
        /// </summary>
        private void StateReportProcess(BaseMessagePack messagePack, string id)
        {
            //存数据库，需反馈
            byte[] temp = new byte[2];
            Array.Copy(messagePack.DataContent, 0, temp, 0, 2);
            Array.Reverse(temp);
            int deviceno = BitConverter.ToUInt16(temp, 0);

            RFIDState rFIDState = new RFIDState()
            {
                DeviceNo = deviceno,
                DeviceState = messagePack.DataContent[2] == 0 ? true : false,
                LogTime = DateTime.Now,
                LineNo = id
            };
            BaseStateServiceImpl.Instance.AddStateInfo(rFIDState);

            MessegeSend.Invoke(
                serverBufferAnalysis.BasePackedServerBufferAnalysis(
                    StandardResponse(messagePack)
                    ),
                id);
        }

        /// <summary>
        /// 读码请求报文处理
        /// </summary>
        /// <param name="id"></param>
        public void ReadCodeRequestProcess(string id)
        {
            MessegeSend.Invoke(
                serverBufferAnalysis.BasePackedServerBufferAnalysis(
                    ReadRequest()
                    ),
                id);
        }

        /// <summary>
        /// 包封装（心跳响应）
        /// </summary>
        /// <returns></returns>
        public BaseMessagePack HeartbeatResponse(BaseMessagePack messagePack)
        {
            PackedData(ref messagePack, 0, new byte[0]);

            return messagePack;
        }

        /// <summary>
        /// 包封装（注册和状态上报响应）
        /// </summary>
        /// <returns></returns>
        public BaseMessagePack StandardResponse(BaseMessagePack messagePack)
        {
            //解析来时报文
            //看了一眼协议好像不太用解析

            //封包应答报文
            byte[] data = new byte[6];
            int index = 0;
            //来时报文序列号
            Array.Reverse(messagePack.SerialCode);
            Array.Copy(messagePack.SerialCode, 0, data, index, 4);
            Array.Reverse(messagePack.SerialCode);
            index += 4;

            //来时报文功能码
            Array.Reverse(messagePack.FunctionCode);
            Array.Copy(messagePack.FunctionCode, 0, data, index, 2);
            index += 2;

            PackedData(ref messagePack, 10, data);
            return messagePack;
        }

        /// <summary>
        /// 读码请求报文（主动）
        /// </summary>
        /// <returns></returns>
        public BaseMessagePack ReadRequest()
        {
            BaseMessagePack messagePack = new BaseMessagePack();

            messagePack.SerialCode = BitConverter.GetBytes((uint)0);
            messagePack.VersionCode = 0x01;

            var datacontent = BitConverter.GetBytes((ushort)481);
            Array.Reverse(datacontent);

            PackedData(ref messagePack, 500, datacontent);

            return messagePack;
        }

        /// <summary>
        /// 封装数据部分(版本号沿用，序列号自动加一)
        /// </summary>
        /// <param name="messagePack">源数据包</param>
        /// <param name="functionCode">新的功能码</param>
        /// <param name="dataContent">新的DataContent</param>
        public void PackedData(ref BaseMessagePack messagePack, ushort functionCode, byte[] dataContent)
        {
            if (dataContent == null)
            {
                return;
            }
            messagePack.FunctionCode = BitConverter.GetBytes(functionCode);
            uint code = BitConverter.ToUInt32(messagePack.SerialCode, 0);
            code++;
            messagePack.SerialCode = BitConverter.GetBytes(code);
            messagePack.TimeStamp = BitConverter.GetBytes(Convert.ToUInt64(DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()));
            messagePack.DataContent = dataContent;
            messagePack.Length = BitConverter.GetBytes(Convert.ToUInt16(messagePack.DataContent.Length + 13u));
        }

        /// <summary>
        /// 初次心跳发送
        /// </summary>
        public void FirstHeartbeat(string id)
        {
            BaseMessagePack messagePack = new BaseMessagePack();
            messagePack.FunctionCode = BitConverter.GetBytes((ushort)0);
            messagePack.VersionCode = 0x01;
            messagePack.SerialCode = BitConverter.GetBytes((uint)0);
            //反馈
            MessegeSend.Invoke(
                serverBufferAnalysis.BasePackedServerBufferAnalysis(
                    HeartbeatResponse(messagePack)
                    ),
                id);
        }
    }
}