using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using QMAPP.FJC.Entity.EnergyManage;

namespace MeterReadingService.MeterReader
{
    /// <summary>
    /// 智能电表读取类
    /// </summary>
    public class ElectricMeterReader:IMeterReader
    {
        Dictionary<string, System.Net.Sockets.TcpClient> meterDic = new Dictionary<string, System.Net.Sockets.TcpClient>();

        public double Read(Meter meter)
        {
            if (!meterDic.ContainsKey(meter.NET_ADDR)) 
            {
                meterDic.Add(meter.NET_ADDR, new System.Net.Sockets.TcpClient());
            }
            var mclient = meterDic[meter.NET_ADDR];
            if (!mclient.Connected)
            {
                mclient.Connect(meter.NET_ADDR.Split(':')[0], int.Parse(meter.NET_ADDR.Split(':')[0]));
            }
            byte[] readcommand = new byte[] { 0x00, 0xAA, 0xEF, 0x09, 0x09 };
            mclient.Client.Send(readcommand);
            byte[] response =new byte[100];
            mclient.Client.Receive(response);
            int reading = BitConverter.ToInt32(response, 8);
            return reading / 10d;
        }

        public IAsyncResult BeginRead(Meter meter, AsyncCallback readCallback, object state)
        {
            if (!meterDic.ContainsKey(meter.NET_ADDR))
            {
                meterDic.Add(meter.NET_ADDR, new System.Net.Sockets.TcpClient());
            }
            var mclient = meterDic[meter.NET_ADDR];
            if (!mclient.Connected)
            {
                mclient.Connect(meter.NET_ADDR.Split(':')[0], int.Parse(meter.NET_ADDR.Split(':')[0]));
            }
            Action act = new Action(() => {
                this.Read(meter);
            });
            return act.BeginInvoke(readCallback, state);
        }

        public void EndRead(out int result, out double reading, out string error, IAsyncResult Asyncresult)
        {
            if (Asyncresult.IsCompleted)
            {
                byte[] readbuffer = (byte[])Asyncresult.AsyncState;
                result = 1;
                reading = BitConverter.ToInt32(readbuffer, 8) / 10d;
                error = "";
            }
            else
            {
                result = -1;
                reading = -1;
                error = "读取超时！";
            }
        }
    }
}