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

using BizHawk.Client.Common;
using BizHawk.Emulation.Common;
using BizHawk.Emulation.Cores.Sony.PSX;

namespace BizHawk.Client.EmuHawk
{
	public partial class VirtualPadDiscManager : UserControl, IVirtualPadControl
	{
		public VirtualPadDiscManager(string[] buttonNames)
		{
			InitializeComponent();
			btnEject.Name = buttonNames[0];
			btnInsert.Name = buttonNames[1];
			_discSelectName = buttonNames[2];
		}

		string _discSelectName;
		public object OwnerEmulator { get; set; }

		object lastCoreOwner;

		void UpdateCoreAssociation()
		{
			if (lastCoreOwner == OwnerEmulator)
				return;

			lastCoreOwner = OwnerEmulator;

			if (!(OwnerEmulator is Octoshock))
				return;

			var psx = OwnerEmulator as Octoshock;
			List<string> buttons = new List<string>();
			buttons.Add("- NONE -");
			buttons.AddRange(psx.HackyDiscButtons);

			lvDiscs.Items.Clear();

			int idx = 0;
			foreach (var button in buttons)
			{
				var lvi = new ListViewItem();
				lvi.Text = idx.ToString();
				lvi.SubItems.Add(button);
				lvDiscs.Items.Add(lvi);
				idx++;
			}
		}


		#region IVirtualPadControl

		public void Clear()
		{
		}

		public void UpdateValues()
		{
			UpdateCoreAssociation();
			if (OwnerEmulator is Octoshock)
			{
				var psx = OwnerEmulator as Octoshock;
				bool eject = psx.CurrentDiscEjected;

				btnEject.Enabled = !eject;
				btnInsert.Enabled = eject;

				if (!btnEject.Enabled) btnEject.Checked = false;
				if (!btnInsert.Enabled) btnInsert.Checked = false;

				//if we're not ejected, then the disc is frozen in the current configuration
				lvDiscs.Enabled = eject;
				if (!eject)
				{
					lvDiscs.SelectedIndices.Clear();
					lvDiscs.SelectedIndices.Add(psx.CurrentDiscIndexMounted);
				}
			}

			//make sure we try to keep something selected here, for clarity.
			//but maybe later we'll just make it so that unselecting means no disc and dont display the disc 0
			if (lvDiscs.SelectedIndices.Count == 0)
				lvDiscs.SelectedIndices.Add(0);
		}

		public void Set(IController controller)
		{
			//controller.GetFloat("Disc Select")
		}

		public bool ReadOnly { get; set; }

		#endregion //IVirtualPadControl

		private void groupBox1_Enter(object sender, EventArgs e)
		{

		}

		private void lvDiscs_SelectedIndexChanged(object sender, EventArgs e)
		{
			//not a valid way to fight unselection, it results in craptons of ping-ponging logic and eventual malfunction
			//if (lvDiscs.SelectedIndices.Count == 0)
			//  lvDiscs.SelectedIndices.Add(0);
			//Global.StickyXORAdapter.SetFloat(_discSelectName, lvDiscs.SelectedIndices[0]);

			//emergency measure: if no selection, set no disc
			if (lvDiscs.SelectedIndices.Count == 0)
			  Global.StickyXORAdapter.SetFloat(_discSelectName, 0);	
			else Global.StickyXORAdapter.SetFloat(_discSelectName, lvDiscs.SelectedIndices[0]);
		}

	



	}
}