using SlnMesnac.RfidUpload.Analysis;
using SlnMesnac.RfidUpload.Common;
using SlnMesnac.RfidUpload.Model;
using SlnMesnac.RfidUpload.Model.config;
using SlnMesnac.RfidUpload.TouchSocket;
using System;
using System.Collections.Generic;
using System.Linq;

namespace SlnMesnac.RfidUpload.Business
{
    /// <summary>
    /// 业务逻辑处理
    /// </summary>
    public class HandleBusiness
    {
        private JsonChange _jsonChange = JsonChange.Instance;
        private InstructionAdapter adapter = InstructionAdapter.Instance;
        private WebApiClientApp _webApiClientApp = WebApiClientApp.Instance;
        private readonly AppConfig appConfig = AppConfig.Instance;

        private List<InstructionInfo> instructionInfoList = new List<InstructionInfo>();

        #region 单例实现
        private static readonly Lazy<HandleBusiness> _lazy = new Lazy<HandleBusiness>(() => new HandleBusiness());

        public static HandleBusiness Instance
        {
            get
            {
                return _lazy.Value;
            }
        }
        #endregion

        #region 委托事件

        /// <summary>
        /// 刷新标签解析
        /// </summary>
        public delegate void RefreshInstructionInfoDataGrid(InstructionInfo instructionInfo);
        public event RefreshInstructionInfoDataGrid InstructionInfoDataGridEvent;

        /// <summary>
        /// 刷新日志内容
        /// </summary>
        public delegate void RefreshLogMessage(string message);
        public event RefreshLogMessage RefreshLogMessageEvent;

        #endregion

        private HandleBusiness() { }



        /// <summary>
        /// 标签处理
        /// </summary>
        /// <param name="buffer"></param>
        /// <exception cref="ArgumentException"></exception>
        public void LabelHandle(byte[] buffer)
        {
            //功能码判断
            if (buffer[4] == 0x31)
            {
                try
                {
                    InstructionInfo info = adapter.ParseInstruction(buffer);

                    if (info != null)
                    {
                        if (FilterTags(info))
                        {
                            instructionInfoList.Add(info);
                            RefreshLogMessageEvent?.Invoke($"标签解析数据：{_jsonChange.ModeToJson(info)}");

                            InstructionInfoDataGridEvent?.Invoke(info);
                        }
                        else
                        {
                            RefreshLogMessageEvent?.Invoke($"标签：{info.data};与前次读取间隔小于1分钟，不进行逻辑处理");
                        }
                    }
                }
                catch (Exception e)
                {
                    RefreshLogMessageEvent?.Invoke($"标签解析异常:{e.Message}");
                }

            }
        }

        /// <summary>
        /// 粘包处理
        /// </summary>
        /// <param name="receivedData"></param>
        /// <returns></returns>
        public List<byte[]> SplitPackets(byte[] receivedData)
        {
            List<byte[]> packets = new List<byte[]>();
            int index = 0;
            while (index < receivedData.Length)
            {
                if (receivedData[index] == 0xAA && receivedData[index + 1] == 0x55)
                {
                    int packetLength = (receivedData[index + 2] << 8) | receivedData[index + 3];
                    if (packetLength <= receivedData.Length - index)
                    {
                        byte[] packet = new byte[packetLength];
                        Array.Copy(receivedData, index, packet, 0, packetLength);
                        packets.Add(packet);
                        index += packetLength;
                    }
                    else
                    {
                        break;
                    }
                }
                else
                {
                    index++;
                }
            }
            return packets;
        }

        public void apiTest(string url)
        {
            //WebApiClientApp api = new WebApiClientApp();
            _webApiClientApp.Upload(url);
        }

        /// <summary>
        /// 标签过滤：同一标签1分钟内不进行逻辑处理
        /// </summary>
        /// <param name="instructionInfo"></param>
        /// <returns></returns>
        private bool FilterTags(InstructionInfo instructionInfo)
        {

            InstructionInfo lastInstructionInfo = instructionInfoList.Where(x => x.data == instructionInfo.data).FirstOrDefault();

            if(lastInstructionInfo == null)
            {
                return true;
            }
            else
            {
                TimeSpan timeDifference = instructionInfo.recordtime.Subtract(lastInstructionInfo.recordtime);
                double minutesDifference = timeDifference.TotalMinutes;

                if (string.IsNullOrEmpty(appConfig.filterInterval))
                {
                    appConfig.filterInterval = "1";
                }

                int filterInterval = Convert.ToInt32(appConfig.filterInterval);

                if (minutesDifference < filterInterval)
                {
                    return false;
                }
                else
                {
                    instructionInfoList.Remove(lastInstructionInfo);
                    return true;
                }
            }

        }
    }
}