using ModbusDemo.Uitls;
using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ModbusDemo.VIewModel
{
    
    class SettingsUCViewModel : BindableBase
    {
        public DelegateCommand DisConnectionCmm {  get; set; }
        //链接窗口的命令
        public DelegateCommand ConnectionCmm {  get; set; }

        //获取串口
        private SerialPort _serialPort;
        //设置串口名字
        private string _portName = "COM1";

        public string PortName
        {
            get { return _portName; }
            set
            {
                _portName = value;
                RaisePropertyChanged();
            }
        }

        //设置波特率
        private string _baudRate = "19200";

        public string BaudRate
        {
            get { return _baudRate; }
            set
            {
                _baudRate = value;
                RaisePropertyChanged();
            }
        }

        //设置数据位
        private string _dataBits = "8";

        public string DataBits
        {
            get { return _dataBits; }
            set
            {
                _dataBits = value;

                RaisePropertyChanged();
            }
        }
        //设置校验位
        private Parity _parity = Parity.Even;

        public Parity Parity
        {
            get { return _parity; }
            set
            {
                _parity = value;
                RaisePropertyChanged();
            }
        }

        //设置停止位
        private StopBits _stopBits = StopBits.One;

        public StopBits StopBits
        {
            get { return _stopBits; }
            set
            {
                _stopBits = value;
                RaisePropertyChanged();
            }
        }

        public SettingsUCViewModel()
        {
            
        }
        /// <summary>
        /// 从容器中获取创建的窗口
        /// </summary>
        /// <param name="serialPort"></param>
        public SettingsUCViewModel(SerialPort serialPort)
        {
            _serialPort = serialPort;
            ConnectionCmm = new DelegateCommand(Connection);
            DisConnectionCmm = new DelegateCommand(DisConnection);
        }

        private void DisConnection()
        {
            if (_serialPort.IsOpen)
            {
                _serialPort.Close();
            }
        }

        /// <summary>
        /// 串口参数设置
        /// </summary>
        private void Connection()
        {
            //todo,做数据的判空处理
            if (!_serialPort.IsOpen)
            {
                _serialPort.PortName = GetComboBoxItemValue(this.PortName);
                _serialPort.BaudRate = int.Parse(GetComboBoxItemValue(this.BaudRate));
                _serialPort.Parity = this.Parity;
                _serialPort.StopBits = this.StopBits;
                _serialPort.DataBits = int.Parse(GetComboBoxItemValue(this.DataBits));
                _serialPort.Open();
            }
            




            List<byte> bytes = new List<byte>();
            bytes.Add(0x01);
            bytes.Add(0x05);


            bytes.Add(BitConverter.GetBytes(301)[1]);
            bytes.Add(BitConverter.GetBytes(301)[0]);


            bytes.Add(0xFF);
            bytes.Add(0x00);

            byte[] bytes1 = CRCUitl.CalculateCRC(bytes.ToArray(), bytes.Count);

            bytes.Add(bytes1[0]);
            bytes.Add(bytes1[1]);
            byte[] bytes2 = bytes.ToArray();
            System.Threading.Thread.Sleep(200); // 等待200毫秒

            byte[] response = new byte[_serialPort.BytesToRead];
            //int bytesRead = serialPort.Read(response, 0, response.Length);

            //string hexResponse = BitConverter.ToString(response, 0, bytesRead);
            _serialPort.Write(bytes2, 0, bytes2.Length);
        }
        /// <summary>
        /// 处理下拉框的选择信息
        /// </summary>
        /// <param name="ComboBoxItem"></param>
        /// <returns></returns>
        private string GetComboBoxItemValue(string ComboBoxItem)
        {

            string displayText = ComboBoxItem.ToString();
            string cleanText = displayText.Replace("System.Windows.Controls.ComboBoxItem: ", "");
            return cleanText;
        }
       

    }
}