using Dapr.Actors.Client;
using Dapr.Actors;
using DotNetty.Buffers;
using DotNetty.Handlers.Logging;
using DotNetty.Handlers.Tls;
using DotNetty.Transport.Bootstrapping;
using DotNetty.Transport.Channels;
using DotNetty.Transport.Channels.Sockets;
using LanShengInterface;
using LanShengModel;
using LanShengService.Tcp;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.Json;
using System.Data;
using Microsoft.AspNetCore.DataProtection.KeyManagement;
using Dapr.Client;
using DotNetty.Transport.Channels.Groups;
using CommonModel;
using DotNetty.Handlers.Timeout;
using System.Diagnostics;
using System.Reflection;

namespace LanShengService
{
    public class TcpService : ITcpService
    {
        public TcpService(IServiceProvider services)
        {
            Services = services;

            Logger = services.GetRequiredService<ILogger<TcpService>>();

            Logger.LogDebug("创建Tcp服务");

            DeviceService = services.GetRequiredService<IDeviceService>();

            Db = services.GetRequiredService<ISqlSugarClient>();

            Db.CodeFirst.SplitTables().InitTables(typeof(TcpDataLog<DeviceData>));

            Logger.LogDebug("加载Tcp服务数据结构");

            IConfiguration configuration = services.GetRequiredService<IConfiguration>()!;

            if (configuration.GetSection("DotNetty").Exists())
            {

                if (configuration.GetSection("DotNetty:Use").Exists())
                {
                    Use = configuration.GetSection("DotNetty:Use").Value!;
                }
                if (configuration.GetSection("DotNetty:ThreadPool").Exists())
                {
                    ThreadPool = Convert.ToInt32(configuration.GetSection("DotNetty:ThreadPool").Value!);
                }
                if (configuration.GetSection("DotNetty:Port").Exists())
                {
                    Port = Convert.ToInt32(configuration.GetSection("DotNetty:Port").Value!);
                }
                Logger.LogDebug("加载Tcp服务参数");
            }

            OpenTcpPort();
        }

        private readonly IServiceProvider Services;

        private readonly ILogger Logger;

        private readonly string Use = "N";

        private readonly int ThreadPool = 1;

        private readonly int Port = 8888;

        private readonly ISqlSugarClient Db;

        private readonly IDeviceService DeviceService;

        private ServerBootstrap? Bootstrap;

        private IEventLoopGroup? BossGroup;

        private IEventLoopGroup? WorkerGroup;

        private Dictionary<string, IChannelGroup>? ChannelGroups;

        private List<TcpDataLog<DeviceData>>? MessageQueue;

        private async Task OpenTcpPort()
        {
            if (Use == "Y")
            {
                ChannelGroups = new Dictionary<string, IChannelGroup>();

                MessageQueue = new List<TcpDataLog<DeviceData>>();

                Bootstrap = new ServerBootstrap();

                BossGroup = new MultithreadEventLoopGroup(ThreadPool);

                WorkerGroup = new MultithreadEventLoopGroup();

                Logger.LogDebug("加载Tcp端口参数");

                Bootstrap!.Group(BossGroup, WorkerGroup);

                Bootstrap.Channel<TcpServerSocketChannel>();

                Bootstrap
                        .Option(ChannelOption.SoBacklog, 1024)
                        .Option(ChannelOption.Allocator, UnpooledByteBufferAllocator.Default)
                        .Option(ChannelOption.RcvbufAllocator, new AdaptiveRecvByteBufAllocator())
                        .ChildOption(ChannelOption.Allocator, UnpooledByteBufferAllocator.Default)
                        .ChildOption(ChannelOption.RcvbufAllocator, new AdaptiveRecvByteBufAllocator())
                        .ChildOption(ChannelOption.SoKeepalive, true)
                        .ChildOption(ChannelOption.TcpNodelay, true)
                        .ChildOption(ChannelOption.SoReuseport, true)
                        .ChildHandler(new ActionChannelInitializer<IChannel>(channel =>
                        {
                            IChannelPipeline Pipeline = channel.Pipeline;
                            Pipeline.AddLast(new IdleStateHandler(10, 0, 0));//心跳
                            Pipeline.AddLast("encoder", new EncoderHandler());
                            Pipeline.AddLast("decoder", new DecoderHandler());
                            Pipeline.AddLast(new HeartBeatHandler());
                            Pipeline.AddLast(new ChannelHandler(Services));
                        }));
                await Bootstrap.BindAsync(Port);
                Logger.LogInformation($"启动Tcp端口监听{Port}");

                DeviceService.TimerInsertDataDo();
                DeviceService.TimerInsertDataLogDo();
                AppDomain.CurrentDomain.ProcessExit += CurrentDomain_ProcessExit;
            }
        }

        private void CurrentDomain_ProcessExit(object? sender, EventArgs e)
        {
            Logger.LogDebug("程序关闭");
            if (Use == "Y")
            {
                Task.WaitAll(
                   BossGroup!.ShutdownGracefullyAsync(TimeSpan.FromMilliseconds(0), TimeSpan.FromSeconds(0)),
                   WorkerGroup!.ShutdownGracefullyAsync(TimeSpan.FromMilliseconds(0), TimeSpan.FromSeconds(0)));
            }
            DeviceService.Offline().Wait();
        }

        public Task AddChannel(string id, IChannelHandlerContext context)
        {
            if (!ChannelGroups!.ContainsKey(id))
            {
                lock (this)
                {
                    if (!ChannelGroups!.ContainsKey(id))
                    {
                        ChannelGroups.Add(id, new DefaultChannelGroup(context.Executor));
                    }
                }
            }
            if (!ChannelGroups[id].Contains(context.Channel))
            {
                lock (this)
                {
                    if (!ChannelGroups[id].Contains(context.Channel))
                    {
                        ChannelGroups[id].Add(context.Channel);
                        Logger.LogDebug($"添加通道{id}:{context.Channel.Id.AsLongText()}");
                    }
                }
            }

            return Task.CompletedTask;
        }

        public async Task PushParams(DeviceData deviceData)
        {
            Logger.LogDebug($"下发指令{JsonSerializer.Serialize(deviceData)}");
            if (ChannelGroups == null)
            {
                throw new BadRequestException("连接服务器失败");
            }
            else
            {
                if (!ChannelGroups.ContainsKey(deviceData.Id!))
                {
                    throw new BadRequestException("设备不在线");
                }
                else
                {
                    await ReloadPush(deviceData);
                    Random random = new Random();
                    var Frame_number = 0;
                    do
                    {
                        Frame_number = random.Next(0, 20);
                    }
                    while (MessageQueue!.Any(x => x.DTU_ID == deviceData.Id && x.Frame_number == Frame_number));
                    TcpDataLog<DeviceData> packet = new TcpDataLog<DeviceData>()
                    {
                        Frame_START = "FAAA",
                        Frame_number = Frame_number,
                        DTU_ID = deviceData.Id,
                        Msg_ID = string.IsNullOrEmpty(deviceData.MsgType) ? "1104" : deviceData.MsgType,
                        Frame_END = "BBFB",
                        Content = deviceData
                    };
                    try
                    {
                        MessageQueue!.Add(packet);
                        await ChannelGroups[packet.DTU_ID!].WriteAndFlushAsync(packet);
                    }
                    catch
                    {
                        MessageQueue!.Remove(packet);
                        throw new BadRequestException("发送指令失败");
                    }
                    await WaitPushReply(packet);
                }
            }
        }

        private Task ReloadPush(DeviceData deviceData)
        {
            var oldData = Db.Queryable<DeviceData>().Where(x => x.Id == deviceData.Id).First();

            Type TempType = typeof(DeviceData);
            PropertyInfo[] TempPropertys = TempType.GetProperties();
            if (deviceData.ConnectString != null && deviceData.ConnectString != oldData.ConnectString)
            {
                deviceData.Data27_B0 = 1;
            }
            else
            {
                deviceData.Data27_B0 = 0;
            }
            if (deviceData.UpdateTag == null)
            {
                deviceData.UpdateTag = 0;
            }
            if (deviceData.Data8_B7_1104 == null)
            {
                deviceData.Data8_B7_1104 = 0;
            }
            if (deviceData.BinSize == null)
            {
                deviceData.BinSize = 0;
            }
            foreach (PropertyInfo propertyInfo in TempPropertys)
            {
                if (propertyInfo.GetValue(deviceData) == null)
                {
                    propertyInfo.SetValue(deviceData, propertyInfo.GetValue(oldData));
                }
            }

            return Task.CompletedTask;
        }

        private Task WaitPushReply(TcpDataLog<DeviceData> packet)
        {
            var tryCount = 20;
            while (MessageQueue!.Any((x => x.DTU_ID == packet.DTU_ID && x.Frame_number == packet.Frame_number)))
            {
                if (tryCount <= 0)
                {
                    MessageQueue!.Remove(packet);
                    throw new BadRequestException("设备应答超时");
                }
                Thread.Sleep(500);
                tryCount--;
            }
            return Task.CompletedTask;
        }

        public Task RemoveMessageItem(TcpDataLog<DeviceData> packet)
        {
            Logger.LogDebug($"删除消息{JsonSerializer.Serialize(packet)}");
            MessageQueue!.RemoveAll((x) => x.DTU_ID == packet.DTU_ID && x.Frame_number == packet.Frame_number);
            return Task.CompletedTask;
        }
    }
}