using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO.Ports;
using System.Threading;

namespace TestWizard
{
	public delegate void RfidRead(string id);
	public class RFID
	{
		private SerialPort p;

		private const int baud = 9600;
		private const Parity parity = Parity.None;
		private const int dataBits = 8;
		private const StopBits stopBits = StopBits.One;

		public event RfidRead IncomingRfid;

		private Thread readThread;
		private bool continueReading = false;

		private string Port = "COM3";

		public RFID()
		{
			init();
		}

		public RFID(int port)
		{
			Port = "COM" + port;
			init();
		}

		public RFID(string port)
		{
			Port = port;
			init();
		}

		private void init()
		{
			p = new SerialPort(Port, baud, parity, dataBits, stopBits);
			if (!continueReading)
			{
				continueReading = true;
				readThread = new Thread(Read);
				readThread.Start();
			}
		}

		public void Close()
		{
			continueReading = false;
		}

		private void Read()
		{
			p.Open();

			while (continueReading)
			{
				string result = p.ReadLine();

				// Strip out meta-text
				//result = result.Replace("\u0003", "");
				//result = result.Replace("\u0002", "");
				result = result.Replace("\r", "");
				result = result.Replace("\n", "");
				//result = string.Concat(result.Select(x => ((int)x).ToString("x")));

				IncomingRfid(result);
			}

			p.Close();
		}
	}
}