using CommunityToolkit.Mvvm.ComponentModel;
using Mesen.Config;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Mesen.ViewModels
{
	public partial class ControllerConfigViewModel : ViewModelBase
	{
		public ControllerConfig Config { get; }
		public ControllerConfig OriginalConfig { get; }
		public ControllerType Type { get; }

		[ObservableProperty] public partial KeyMappingViewModel KeyMapping1 { get; set; }
		[ObservableProperty] public partial KeyMappingViewModel KeyMapping2 { get; set; }
		[ObservableProperty] public partial KeyMappingViewModel KeyMapping3 { get; set; }
		[ObservableProperty] public partial KeyMappingViewModel KeyMapping4 { get; set; }

		[ObservableProperty] public partial bool ShowPresets { get; set; } = false;
		[ObservableProperty] public partial bool IsTwoButtonController { get; set; } = false;
		[ObservableProperty] public partial bool ShowTurbo { get; set; } = false;

		[Obsolete("For designer only")]
		public ControllerConfigViewModel() : this(ControllerType.SnesController, new ControllerConfig(), new ControllerConfig(), 0) { }

		public ControllerConfigViewModel(ControllerType type, ControllerConfig config, ControllerConfig originalConfig, int port)
		{
			Config = config;
			OriginalConfig = originalConfig;
			Type = type;

			KeyMapping1 = new KeyMappingViewModel(type, config.Mapping1, 0, port);
			KeyMapping2 = new KeyMappingViewModel(type, config.Mapping2, 1, port);
			KeyMapping3 = new KeyMappingViewModel(type, config.Mapping3, 2, port);
			KeyMapping4 = new KeyMappingViewModel(type, config.Mapping4, 3, port);

			ShowPresets = type.HasPresets();
			IsTwoButtonController = type.IsTwoButtonController();
			ShowTurbo = type.HasTurbo();
		}
	}

	public partial class KeyMappingViewModel : ViewModelBase
	{
		[ObservableProperty] public partial ControllerType Type { get; set; }
		[ObservableProperty] public partial KeyMapping Mapping { get; set; }
		[ObservableProperty] public partial int Port { get; set; }
		[ObservableProperty] public partial List<CustomKeyMapping> CustomKeys { get; set; } = new();

		private int _mappingIndex = 0;

		[Obsolete("For designer only")]
		public KeyMappingViewModel() : this(ControllerType.None, new(), 0, 0) { }

		public KeyMappingViewModel(ControllerType type, KeyMapping mapping, int mappingIndex, int port)
		{
			Type = type;
			Mapping = mapping;
			Port = port;
			_mappingIndex = mappingIndex;

			CustomKeys = Mapping.ToCustomKeys(type, _mappingIndex);
		}

		public void RefreshCustomKeys()
		{
			CustomKeys = Mapping.ToCustomKeys(Type, _mappingIndex);
		}
	}

	public partial class CustomKeyMapping : ViewModelBase
	{
		public string Name { get; set; }
		public UInt16[] Mappings { get; set; }
		public int Index { get; set; }
		[ObservableProperty] public partial UInt16 KeyMapping { get; set; }

		public CustomKeyMapping(string name, UInt16[] mappings, int index)
		{
			Name = name;
			Mappings = mappings;
			Index = index;
			KeyMapping = mappings[index];
		}

		partial void OnKeyMappingChanged(ushort value)
		{
			Mappings[Index] = value;
		}
	}
}