///
/// Copyright (c) 2015 Sensus Metering Systems
///
using System;
using System.Windows.Forms;
using System.IO.Ports;
using log4net;
using TBF.BenchControl.Generic;
using TBF.Resources;

namespace TBF.BenchControl.Modbus.Common
{
	public partial class ModbusCfgCtrl : UserControl, IComponentCfgCtrl
	{
		static readonly ILog log = LogManager.GetLogger(typeof(ModbusCfgCtrl));

		public bool ShowMore { get { return false; } }

		ModbusCfg config;
		public IComponentCfg Config
		{
			get { return config as IComponentCfg; }
			set
			{
				config = value as ModbusCfg;
				Redraw();
			}
		}

		public ModbusCfgCtrl()
		{
			InitializeComponent();

			parityComboBox.Items.Add(Parity.None.ToString());
			parityComboBox.Items.Add(Parity.Even.ToString());
			parityComboBox.Items.Add(Parity.Odd.ToString());

			stopBitsComboBox.Items.Add(StopBits.None.ToString());
			stopBitsComboBox.Items.Add(StopBits.One.ToString());
			stopBitsComboBox.Items.Add(StopBits.OnePointFive.ToString());
			stopBitsComboBox.Items.Add(StopBits.Two.ToString());

			handshakeComboBox.Items.Add(Handshake.None.ToString());
			handshakeComboBox.Items.Add(Handshake.RequestToSend.ToString());
			handshakeComboBox.Items.Add(Handshake.XOnXOff.ToString());
		}

		int GetParityIx(Parity par)
		{
			if (par == Parity.None) return 0;
			if (par == Parity.Even) return 0;
			if (par == Parity.Odd) return 0;
			return -1;
		}
		Parity GetParity(string str)
		{
			if (str.Equals(Parity.None.ToString())) return Parity.None;
			if (str.Equals(Parity.Even.ToString())) return Parity.Even;
			if (str.Equals(Parity.Odd.ToString())) return Parity.Odd;
			return (Parity)(-1);
		}

		int GetStopBitsIx(StopBits sb)
		{
			if (sb == StopBits.None) return 0;
			if (sb == StopBits.One) return 1;
			if (sb == StopBits.OnePointFive) return 2;
			if (sb == StopBits.Two) return 3;
			return -1;
		}
		StopBits GetStopBits(string str)
		{
			if (str.Equals(StopBits.None.ToString())) return StopBits.None;
			if (str.Equals(StopBits.One.ToString())) return StopBits.One;
			if (str.Equals(StopBits.OnePointFive.ToString())) return StopBits.OnePointFive;
			if (str.Equals(StopBits.Two.ToString())) return StopBits.Two;
			return (StopBits)(-1);
		}

		int GetHandshakeIx(Handshake par)
		{
			if (par == Handshake.None) return 0;
			if (par == Handshake.RequestToSend) return 0;
			if (par == Handshake.XOnXOff) return 0;
			return -1;
		}
		Handshake GetHandshake(string str)
		{
			if (str.Equals(Handshake.None.ToString())) return Handshake.None;
			if (str.Equals(Handshake.RequestToSend.ToString())) return Handshake.RequestToSend;
			if (str.Equals(Handshake.XOnXOff.ToString())) return Handshake.XOnXOff;
			return (Handshake)(-1);
		}

		private void ModbusCfgCtrl_Load(object sender, EventArgs e)
		{
			nameLabel.Text = Strings.Name;
			Redraw();
		}

		public void Closing()
		{
		}

		void Redraw()
		{
			if (config == null) return;			/// Control was not loaded, settings were not changed

			classNameLabel.Text = config.Factory.ClassName;
			nameTextBox.Text = config.Name;
			comPortNrTextBox.Text = config.ComPortNr.ToString();
			baudRateTextBox.Text = config.BaudRate.ToString();
			parityComboBox.Text = config.Parity.ToString();
			dataBitsTextBox.Text = config.DataBits.ToString();
			stopBitsComboBox.Text = config.StopBits.ToString();
			handshakeComboBox.Text = config.Handshake.ToString();
		}

		public void Unlock()
		{
			nameTextBox.Enabled = true;
			comPortNrTextBox.Enabled = true;
			baudRateTextBox.Enabled = true;
			parityComboBox.Enabled = true;
			dataBitsTextBox.Enabled = true;
			stopBitsComboBox.Enabled = true;
			handshakeComboBox.Enabled = true;
		}

		public CfgUpdateFlags UpdateCfg()
		{
			CfgUpdateFlags flags = CfgUpdateFlags.RestartRqrd;

			if (config == null) return CfgUpdateFlags.Error;	/// Control was not loaded, settings were not changed

			config.Name = nameTextBox.Text;
			config.ComPortNr = int.Parse(comPortNrTextBox.Text);
			config.BaudRate = int.Parse(baudRateTextBox.Text);
			config.Parity = GetParity(parityComboBox.SelectedItem.ToString());
			config.DataBits = int.Parse(dataBitsTextBox.Text);
			config.StopBits = GetStopBits(stopBitsComboBox.SelectedItem.ToString());
			config.Handshake = GetHandshake(handshakeComboBox.SelectedItem.ToString());

			return flags;
		}

		public CfgUpdateFlags VerifyCfg(ref string message)
		{
            CfgUpdateFlags flags = CfgUpdateFlags.None;

			int dummy;
			if (!int.TryParse(comPortNrTextBox.Text, out dummy) || dummy < 1 || dummy > 999)
			{
				flags |= CfgUpdateFlags.Error;
				message += Environment.NewLine + "'Serial Port Number' is not valid";
			}

			if (!int.TryParse(baudRateTextBox.Text, out dummy) || dummy < 150 || dummy > 115200)
			{
				flags |= CfgUpdateFlags.Error;
				message += Environment.NewLine + "'Baud Rate' is not valid";
			}

			if (!int.TryParse(dataBitsTextBox.Text, out dummy) || dummy < 7 || dummy > 8)
			{
				flags |= CfgUpdateFlags.Error;
				message += Environment.NewLine + "'Data Bits' is not valid";
			}

			return flags;
		}
	}
}