///
/// Copyright (c) 2013-2016 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Config.Entities;
using TBF.Resources;

namespace TBF.BenchControl.Output.FileWriters.Basic
{
	public partial class ResultsConfigDlg : Form
	{
		public IList<Results.ItemSpec> AvailableItems;
		public IList<Results.ItemSpec> SelectedItems;

		public bool Compound;			/// false = single meter items, true = combined meter items

		public ResultsConfigDlg()
		{
			InitializeComponent();
		}

		void Localize()
		{
			Text = Strings.Configuration;
			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();
			RedrawAvailable();
			RedrawSelected();
		}

		/// <summary>
		/// Redraw selected items (right hand side)
		/// </summary>
		void RedrawAvailable()
		{
			availableResultsListBox.Items.Clear();
			AvailableItems = new List<Results.ItemSpec>();
			foreach (var item in Results.ItemSpec.AllItems)
			{
				if (!SelectedItems.Contains(item) && (Compound ? item.CanPrintCombined : item.CanPrintSingle))
				{
					AvailableItems.Add(item);
					availableResultsListBox.Items.Add(item.Name);
				}
			}
		}

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

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

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

			SelectedItems.Clear();
			RedrawAvailable();
			RedrawSelected();
		}

		void okButton_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.OK;
			Close();
		}
	}
}