using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Mesen.GUI.Config;
using Mesen.GUI.Controls;

namespace Mesen.GUI.Forms.Config
{
	public partial class ctrlStandardController : BaseControl
	{
		public event EventHandler OnChange;

		public enum MappedKeyType
		{
			None,
			Keyboard,
			Controller
		}

		public ctrlStandardController()
		{
			InitializeComponent();
			if(LicenseManager.UsageMode != LicenseUsageMode.Designtime) {
				Initialize(new KeyMappings());
			}
		}

		private void InitButton(Button btn, UInt32 scanCode)
		{
			btn.Text = InteropEmu.GetKeyName(scanCode);
			btn.Tag = scanCode;
		}

		public void Initialize(KeyMappings mappings)
		{
			InitButton(btnA, mappings.A);
			InitButton(btnB, mappings.B);
			InitButton(btnStart, mappings.Start);
			InitButton(btnSelect, mappings.Select);
			InitButton(btnUp, mappings.Up);
			InitButton(btnDown, mappings.Down);
			InitButton(btnLeft, mappings.Left);
			InitButton(btnRight, mappings.Right);
			InitButton(btnTurboA, mappings.TurboA);
			InitButton(btnTurboB, mappings.TurboB);

			this.OnChange?.Invoke(this, null);
		}

		public MappedKeyType GetKeyType()
		{
			KeyMappings mappings = GetKeyMappings();
			MappedKeyType keyType = MappedKeyType.None;
			if(mappings.A > 0xFFFF || mappings.B > 0xFFFF || mappings.Down > 0xFFFF || mappings.Left > 0xFFFF || mappings.Right > 0xFFFF || mappings.Select > 0xFFFF ||
				mappings.Start > 0xFFFF || mappings.TurboA > 0xFFFF || mappings.TurboB > 0xFFFF || mappings.TurboSelect > 0xFFFF || mappings.TurboStart > 0xFFFF || mappings.Up > 0xFFFF) {
				keyType = MappedKeyType.Controller;
			} else if(mappings.A > 0 || mappings.B > 0 || mappings.Down > 0 || mappings.Left > 0 || mappings.Right > 0 || mappings.Select > 0 ||
				mappings.Start > 0 || mappings.TurboA > 0 || mappings.TurboB > 0 || mappings.TurboSelect > 0 || mappings.TurboStart > 0 || mappings.Up > 0) {
				keyType = MappedKeyType.Keyboard;
			}
			return keyType;
		}

		public void ClearKeys()
		{
			InitButton(btnA, 0);
			InitButton(btnB, 0);
			InitButton(btnStart, 0);
			InitButton(btnSelect, 0);
			InitButton(btnUp, 0);
			InitButton(btnDown, 0);
			InitButton(btnLeft, 0);
			InitButton(btnRight, 0);
			InitButton(btnTurboA, 0);
			InitButton(btnTurboB, 0);

			this.OnChange?.Invoke(this, null);
		}

		private void btnMapping_Click(object sender, EventArgs e)
		{
			frmGetKey frm = new frmGetKey();
			frm.ShowDialog();
			((Button)sender).Text = frm.BindedKeyName;
			((Button)sender).Tag = frm.BindedKeyCode;

			this.OnChange?.Invoke(this, null);
		}

		public KeyMappings GetKeyMappings()
		{
			KeyMappings mappings = new KeyMappings() {
				A = (UInt32)btnA.Tag,
				B = (UInt32)btnB.Tag,
				Start = (UInt32)btnStart.Tag,
				Select = (UInt32)btnSelect.Tag,
				Up = (UInt32)btnUp.Tag,
				Down = (UInt32)btnDown.Tag,
				Left = (UInt32)btnLeft.Tag,
				Right = (UInt32)btnRight.Tag,
				TurboA = (UInt32)btnTurboA.Tag,
				TurboB = (UInt32)btnTurboB.Tag,
				TurboSelect = 0,
				TurboStart = 0,
			};
			return mappings;
		}
	}
}