///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System;
using System.Drawing;
using System.Windows.Forms;
using TBF.Resources;

namespace TBF.TestWizard
{
	public partial class Roi1 : Form
	{
		RoiData roiData;

		const int StylesCount = 3;
		int styleIdx;		/// 0 .. StylesCount - 1


		public Roi1()
		{
			InitializeComponent();
		}

		public Roi1(bool first, bool last, RoiData roiData)
			: this()
		{
			this.roiData = roiData;

			Text = "Pointer/arrow style";
			teethCount.Text = "Teeth count";

			backButton.Text = Strings.BackBtnText;
			nextButton.Text = Strings.NextBtnText;
			cancelButton.Text = Strings.CancelBtnText;

			if (first) backButton.Visible = false;
			if (last) nextButton.Text = Strings.FinishBtnText;
		}


		private void Roi1_Load(object sender, EventArgs e)
		{
			if (roiData == null) return;

			RefreshWizardPage();
		}

		void RefreshWizardPage()
		{
			teetgCountTextBox.Text = roiData.TeethCount.ToString();
			styleIdx = roiData.StyleIdx;
			LoadImageAndUpdateFwBwBtns();
			nextButton.Enabled = IsFormValid();
		}

		void LoadImageAndUpdateFwBwBtns()
		{
			switch (styleIdx)
			{
				default:
				case 0:
					stylePictureBox.Image = new Bitmap(TBF.Properties.Resources.RoiStyle1);
					break;
				case 1:
					stylePictureBox.Image = new Bitmap(TBF.Properties.Resources.RoiStyle2);
					break;
				case 2:
					stylePictureBox.Image = new Bitmap(TBF.Properties.Resources.RoiStyle3);
					break;
			}

			fwButton.Enabled = styleIdx < StylesCount - 1;
			bwButton.Enabled = styleIdx > 0;
		}

		void UpdateTest()
		{
			roiData.StyleIdx = styleIdx;
			roiData.TeethCount = int.Parse(teetgCountTextBox.Text);
		}

		bool IsFormValid()
		{
			int teethCnt;
			return int.TryParse(teetgCountTextBox.Text, out teethCnt)
					&& teethCnt > 0 && teethCnt <= 20
					&& styleIdx >= 0 && styleIdx < StylesCount
					&& (styleIdx == 2 || teethCnt == 1);
		}

		private void backButton_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Retry;
			Close();
		}

		private void nextButton_Click(object sender, EventArgs e)
		{
			if (roiData != null && IsFormValid())
			{
				UpdateTest();
				DialogResult = DialogResult.OK;
				Close();
			}
			else
			{
				DialogResult = DialogResult.None;
			}
		}

		private void cancelButton_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		private void anyTextBox_TextChanged(object sender, EventArgs e)
		{
			nextButton.Enabled = IsFormValid();
		}

		private void bwButton_Click(object sender, EventArgs e)
		{
			if (styleIdx > 0) styleIdx--;
			LoadImageAndUpdateFwBwBtns();
			nextButton.Enabled = IsFormValid();
		}

		private void fwButton_Click(object sender, EventArgs e)
		{
			if (styleIdx < StylesCount - 1) styleIdx++;
			LoadImageAndUpdateFwBwBtns();
			nextButton.Enabled = IsFormValid();
		}
	}
}