using System;
using System.Windows.Forms;
using BizHawk.Emulation.Cores.Nintendo.SNES;
using BizHawk.Client.Common;

namespace BizHawk.Client.EmuHawk
{
	public partial class SNESOptions : Form
	{
		private SNESOptions()
		{
			InitializeComponent();
		}

		private bool _suppressDoubleSize;
		private bool _userDoubleSizeOption;

		public static void DoSettingsDialog(IWin32Window owner)
		{
			var s = ((LibsnesCore)Global.Emulator).GetSettings();
			var ss = ((LibsnesCore)Global.Emulator).GetSyncSettings();
			var dlg = new SNESOptions
			{
				AlwaysDoubleSize = s.AlwaysDoubleSize,
				ForceDeterminism = s.ForceDeterminism,
				CropSGBFrame = s.CropSGBFrame,
				Profile = ss.Profile
			};

			var result = dlg.ShowDialog(owner);
			if (result == DialogResult.OK)
			{
				s.AlwaysDoubleSize = dlg.AlwaysDoubleSize;
				s.ForceDeterminism = dlg.ForceDeterminism;
				s.CropSGBFrame = dlg.CropSGBFrame;
				ss.Profile = dlg.Profile;
				GlobalWin.MainForm.PutCoreSettings(s);
				GlobalWin.MainForm.PutCoreSyncSettings(ss);
			}
		}

		private void SNESOptions_Load(object sender, EventArgs e)
		{
			rbAccuracy.Visible = label2.Visible = VersionInfo.DeveloperBuild;
		}

		private string Profile
		{
			get
			{
				if (rbCompatibility.Checked)
				{
					return "Compatibility";
				}

				if (rbPerformance.Checked)
				{
					return "Performance";
				}

				if (rbAccuracy.Checked)
				{
					return "Accuracy";
				}

				throw new InvalidOperationException();
			}

			set
			{
				rbCompatibility.Checked = value == "Compatibility";
				rbPerformance.Checked = value == "Performance";
				rbAccuracy.Checked = value == "Accuracy";
			}
		}

		private bool AlwaysDoubleSize
		{
			get
			{
				return _userDoubleSizeOption;
			}

			set
			{
				_userDoubleSizeOption = value;
				RefreshDoubleSizeOption();
			}
		}

		private bool ForceDeterminism
		{
			get { return cbForceDeterminism.Checked; }
			set { cbForceDeterminism.Checked = value; }
		}

		private bool CropSGBFrame
		{
			get { return cbCropSGBFrame.Checked; }
			set { cbCropSGBFrame.Checked = value; }
		}

		void RefreshDoubleSizeOption()
		{
			_suppressDoubleSize = true;
			cbDoubleSize.Checked = !cbDoubleSize.Enabled || _userDoubleSizeOption;
			_suppressDoubleSize = false;
		}

		private void RbAccuracy_CheckedChanged(object sender, EventArgs e)
		{
			cbDoubleSize.Enabled = !rbAccuracy.Checked;
			lblDoubleSize.ForeColor = cbDoubleSize.Enabled ? System.Drawing.SystemColors.ControlText : System.Drawing.SystemColors.GrayText;
			RefreshDoubleSizeOption();
		}

		private void CbDoubleSize_CheckedChanged(object sender, EventArgs e)
		{
			if (_suppressDoubleSize)
			{
				return;
			}

			_userDoubleSizeOption = cbDoubleSize.Checked;
		}

		private void CbForceDeterminism_CheckedChanged(object sender, EventArgs e)
		{
		}

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

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

	}
}