using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using TBF.Resources;

namespace TBF.Forms
{
	public partial class ResultsConfig : Form
	{
		/// Arrangement of tests
		public enum TestsAre
		{
			Rows,
			Columns,
		}
		public TestsAre TestsArrangement;

		/// Arrangement of meters
		public enum Meters
		{
			Vertically,
			Horizontally,
		}
		public Meters MetersArrangement;

		/// Results items to be selected in the configuration
		public enum ResultsItem
		{
			Abc,
			Def,
			Count
		}
		//
		public IList<ResultsItem> AvailableItems;
		public IList<ResultsItem> SelectedItems;


		public ResultsConfig()
		{
			InitializeComponent();

			SelectedItems = new List<ResultsItem>();
			AvailableItems = GetListOfAvailableItems();
		}

		void Localize()
		{
			Text = Strings.Configuration;
			testsArangementGroupBox.Text = Strings.Arrangement_of_tests;
			metersArangementGroupBox.Text = Strings.Arrangement_of_meters;
			testsRowsRadioButton.Text = Strings.Tests_are_rows;
			testsColumnsRadioButton.Text = Strings.Tests_are_columns;
			horizontallyRadioButton.Text = Strings.Horizontally;
			verticallyRadioButton.Text = Strings.Vertically;
			availableResultsLabel.Text = Strings.Available_results;
			selectedResultsLabel.Text = Strings.Selected_results;
			addButton.Text = Strings.Add;
			removeButton.Text = Strings.Remove;
			removeAllButton.Text = Strings.Remove_all;
			okButton.Text = Strings.OkBtnText;
			cancelButton.Text = Strings.CancelBtnText;
		}

		void ResultsConfig_Load(object sender, EventArgs e)
		{
			Localize();

			testsRowsRadioButton.Checked = (TestsArrangement == TestsAre.Rows);
			testsColumnsRadioButton.Checked = (TestsArrangement == TestsAre.Columns);

			horizontallyRadioButton.Checked = (MetersArrangement == Meters.Horizontally);
			verticallyRadioButton.Checked = (MetersArrangement == Meters.Vertically);

			RedrawAvailable();
			RedrawSelected();
		}

		/// <summary>
		/// Create a list of available items from the complete list from 'auxBrdUpgInfo'
		/// and the list of selected items. In this way the order of items in the created list
		/// is always the same as in the original list in 'auxBrdUpgInfo'.
		/// </summary>
		/// <returns>A list of available items which does not contain the selected items</returns>
		IList<ResultsItem> GetListOfAvailableItems()
		{
			IList<ResultsItem> availableItems = new List<ResultsItem>();
			for (ResultsItem item = 0; item < ResultsItem.Count; item++)
			{
				if (!SelectedItems.Contains(item)) availableItems.Add(item);
			}
			return availableItems;
		}

		/// <summary>
		/// Redraw selected items (right hand side)
		/// </summary>
		void RedrawAvailable()
		{
			availableResultsListBox.Items.Clear();
			foreach (var item in AvailableItems) availableResultsListBox.Items.Add(item.ToString());
		}

		/// <summary>
		/// Redraw selected items (right hand side)
		/// </summary>
		void RedrawSelected()
		{
			selectedResultsListBox.Items.Clear();
			foreach (var item in SelectedItems) selectedResultsListBox.Items.Add(item.ToString());
		}

		void okButton_Click(object sender, EventArgs e)
		{
			if (testsColumnsRadioButton.Checked) TestsArrangement = TestsAre.Columns;
			else TestsArrangement = TestsAre.Rows;

			if (horizontallyRadioButton.Checked) MetersArrangement = Meters.Horizontally;
			else MetersArrangement = Meters.Vertically;

			DialogResult = DialogResult.OK;
			Close();
		}

		private void availableResultsListBox_DoubleClick(object sender, EventArgs e)
		{
			/// Double click works when just one item is selected
			IList<ResultsItem> itemsToRemove = new List<ResultsItem>();
			if (availableResultsListBox.SelectedIndices.Count == 1)
			{
				var item = AvailableItems[availableResultsListBox.SelectedIndices[0]];
				SelectedItems.Add(item);
				AvailableItems.Remove(item);
				RedrawAvailable();
				RedrawSelected();
			}
		}

		void addButton_Click(object sender, EventArgs e)
		{
			/// Append at the end, this code supports multiple selected items,
			/// although ListBox control settings may limit the max.number of selected items to one.

			for (int i = availableResultsListBox.SelectedIndices.Count - 1; i >= 0; i--)
			{
				var item = AvailableItems[availableResultsListBox.SelectedIndices[i]];
				SelectedItems.Add(item);
				AvailableItems.Remove(item);
			}
			RedrawAvailable();
			RedrawSelected();
		}

		private void selectedResultsListBox_DoubleClick(object sender, EventArgs e)
		{
			/// Double click works when just one item is selected

			if (selectedResultsListBox.SelectedIndices.Count == 1)
			{
				SelectedItems.RemoveAt(selectedResultsListBox.SelectedIndices[0]);
				AvailableItems = GetListOfAvailableItems();
				RedrawAvailable();
				RedrawSelected();
			}
		}

		void removeButton_Click(object sender, EventArgs e)
		{
			/// Remove from the list (the last selected item first so that the indexes are not affected)

			for (int i = selectedResultsListBox.SelectedIndices.Count - 1; i >= 0; i--)
			{
				ResultsItem item = SelectedItems[selectedResultsListBox.SelectedIndices[i]];
				SelectedItems.Remove(item);
			}
			AvailableItems = GetListOfAvailableItems();
			RedrawAvailable();
			RedrawSelected();
		}

		void removeAllButton_Click(object sender, EventArgs e)
		{
			/// Remove all items from 'Selected' list

			SelectedItems.Clear();
			AvailableItems = GetListOfAvailableItems();
			RedrawAvailable();
			RedrawSelected();
		}
	}
}