using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using BizHawk.Client.EmuHawk.Properties;
using BizHawk.Common.ReflectionExtensions;
using BizHawk.Emulation.Common;
using BizHawk.Emulation.Cores.Intellivision;

namespace BizHawk.Client.EmuHawk
{
	[Schema("INTV")]
	// ReSharper disable once UnusedMember.Global
	public class IntvSchema : IVirtualPadSchema
	{
		private string StandardControllerName => typeof(StandardController).DisplayName();
		private string AnalogControllerName => typeof(FakeAnalogController).DisplayName();

		public IEnumerable<PadSchema> GetPadSchemas(IEmulator core)
		{
			var intvSyncSettings = ((Intellivision)core).GetSyncSettings().Clone();
			var port1 = intvSyncSettings.Port1;
			var port2 = intvSyncSettings.Port2;

			if (port1 == StandardControllerName)
			{
				yield return StandardController(1);
			}
			else if (port1 == AnalogControllerName)
			{
				yield return AnalogController(1);
			}

			if (port2 == StandardControllerName)
			{
				yield return StandardController(2);
			}
			else if (port2 == AnalogControllerName)
			{
				yield return AnalogController(2);
			}
		}

		private static PadSchema StandardController(int controller)
		{
			return new PadSchema
			{
				DisplayName = $"Player {controller}",
				Size = new Size(148, 332),
				Buttons = StandardButtons(controller).Concat(new[]
				{
					new ButtonSchema(51, 124, controller, "N") { Icon = Resources.BlueUp },
					new ButtonSchema(63, 145, controller, "NNE") { Icon = Resources.NNE },
					new ButtonSchema(39, 145, controller, "NNW") { Icon = Resources.NNW },
					new ButtonSchema(75, 166, controller, "NE") { Icon = Resources.NE },
					new ButtonSchema(27, 166, controller, "NW") { Icon = Resources.NW },
					new ButtonSchema(87, 187, controller, "ENE") { Icon = Resources.ENE },
					new ButtonSchema(15, 187, controller, "WNW") { Icon = Resources.WNW },
					new ButtonSchema(99, 208, controller, "E") { Icon = Resources.Forward },
					new ButtonSchema(3, 208, controller, "W") { Icon = Resources.Back },
					new ButtonSchema(87, 229, controller, "ESE") { Icon = Resources.ESE },
					new ButtonSchema(15, 229, controller, "WSW") { Icon = Resources.WSW },
					new ButtonSchema(75, 250, controller, "SE") { Icon = Resources.SE },
					new ButtonSchema(27, 250, controller, "SW") { Icon = Resources.SW },
					new ButtonSchema(63, 271, controller, "SSE") { Icon = Resources.SSE },
					new ButtonSchema(39, 271, controller, "SSW") { Icon = Resources.SSW },
					new ButtonSchema(51, 292, controller, "S") { Icon = Resources.BlueDown }
				})
			};
		}

		private static PadSchema AnalogController(int controller)
		{
			var controllerDefRanges = new FakeAnalogController(controller).Definition.AxisRanges;
			return new PadSchema
			{
				DisplayName = $"Player {controller}",
				Size = new Size(280, 332),
				Buttons = StandardButtons(controller).Concat(new PadSchemaControl[]
				{
					new AnalogSchema(1, 121, $"P{controller} Disc X")
					{
						AxisRange = controllerDefRanges[0],
						SecondaryAxisRange = controllerDefRanges[1]
					}
				})
			};
		}

		private static IEnumerable<ButtonSchema> StandardButtons(int controller)
		{
			return new[]
			{
				Key(25, 15, controller , 1),
				Key(51, 15, controller, 2),
				Key(77, 15, controller, 3),
				Key(25, 41, controller, 4),
				Key(51, 41, controller, 5),
				Key(77, 41, controller, 6),
				Key(25, 67, controller, 7),
				Key(51, 67, controller, 8),
				Key(77, 67, controller, 9),
				new ButtonSchema(25, 93, controller, "Clear") { DisplayName = "C" },
				Key(51, 93, controller, 0),
				new ButtonSchema(77, 93, controller, "Enter") { DisplayName = "E" },
				new ButtonSchema(2, 41, controller, "Top") { DisplayName = "T" },
				new ButtonSchema(100, 41, controller, "Top") { DisplayName = "T" },
				new ButtonSchema(2, 67, controller, "L") { DisplayName = "L" },
				new ButtonSchema(100, 67, controller, "R") { DisplayName = "R" }
			};
		}

		private static ButtonSchema Key(int x, int y, int controller, int button)
		{
			return new ButtonSchema(x, y, controller, $"Key {button}")
			{
				DisplayName = button.ToString()
			};
		}
	}
}