using System.Collections.Generic;

// ReSharper disable StyleCop.SA1509
namespace BizHawk.Client.Common
{
	public class Bk2MnemonicConstants
	{
		public char this[string button]
		{
			get
			{
				var key = button.Replace("Key ", "");
				if (key.StartsWith("P"))
				{
					if (key.Length > 2 && key[1] == '1' && key[2] >= '0' && key[1] <= '9') // Hack to support 10-20 controllers, TODO: regex this thing instead
					{
						key = key.Substring(4);
					}
					else if (key.Length > 1 && key[1] >= '0' && key[1] <= '9')
					{
						key = key.Substring(3);
					}
				}
				

				if (_systemOverrides.ContainsKey(Global.Emulator.SystemId) && _systemOverrides[Global.Emulator.SystemId].ContainsKey(key))
				{
					return _systemOverrides[Global.Emulator.SystemId][key];
				}

				if (_baseMnemonicLookupTable.ContainsKey(key))
				{
					return _baseMnemonicLookupTable[key];
				}

				if (key.Length == 1)
				{
					return key[0];
				}

				return '!';
			}
		}

		private readonly Dictionary<string, char> _baseMnemonicLookupTable = new Dictionary<string, char>
		{
			["Power"] = 'P',
			["Reset"] = 'r',
			["Pause"] = 'p',
			["Rotate"] = 'R',

			["Up"] = 'U',
			["Down"] = 'D',
			["Left"] = 'L',
			["Right"] = 'R',

			["A"] = 'A',
			["B"] = 'B',
			["C"] = 'C',

			["X"] = 'X',
			["Y"] = 'Y',
			["Z"] = 'Z',

			["Select"] = 's',
			["Start"] = 'S',
			["Run"] = 'R',

			["L"] = 'l',
			["R"] = 'r',

			["L1"] = 'l',
			["R1"] = 'r',

			["L2"] = 'L',
			["R2"] = 'R',

			["L3"] = '<',
			["R3"] = '>',

			["Button"] = 'B',
			["Button 1"] = '1',
			["Button 2"] = '2',
			["B1"] = '1',
			["B2"] = '2',

			["Trigger"] = '1',
			["Trigger 1"] = '1',
			["Trigger 2"] = '2',

			["Mouse Left"] = 'l',
			["Mouse Right"] = 'r',
			["Mouse Center"] = 'c',
			["Mouse Start"] = 's',

			["Mode"] = 'M',
			["MODE"] = 'M',
			["Mode 1"] = 'M',
			["Mode 2"] = 'm',

			["Fire"] = 'F',
			["Lightgun Trigger"] = 'T',
			["Lightgun Start"] = 'S',
			["Lightgun B"] = 'B',
			["Lightgun C"] = 'C',
			["Microphone"] = 'M',

			["Star"] = '*',
			["Pound"] = '#',

			["X1"] = '1',
			["X2"] = '2',
			["X3"] = '3',
			["X4"] = '4',
				
			["Y1"] = '1',
			["Y2"] = '2',
			["Y3"] = '3',
			["Y4"] = '4',

			["Triangle"] = 'T',
			["Circle"] = 'O',
			["Cross"] = 'X',
			["Square"] = 'Q',

			["Toggle Left Difficulty"] = 'l',
			["Toggle Right Difficulty"] = 'r',

			["Open"] = 'O',
			["Close"] = 'C',
			["Pedal"] = 'P',

			["Next Disk"] = '>',
			["Previous Disk"] = '<'
		};

		private readonly Dictionary<string, Dictionary<string, char>> _systemOverrides = new Dictionary<string, Dictionary<string, char>>
		{
			["NES"] = new Dictionary<string, char>
			{
				["FDS Eject"] = 'E',
				["FDS Insert 0"] = '0',
				["FDS Insert 1"] = '1',
				["Insert Coin P1"] = 'c',
				["Insert Coin P2"] = 'C',
				["Service Switch"] = 'w',

				["PP1"] = '1',
				["PP2"] = '2',
				["PP3"] = '3',
				["PP4"] = '4',

				["PP5"] = '5',
				["PP6"] = '6',
				["PP7"] = '7',
				["PP8"] = '8',

				["PP9"] = '9',
				["PP10"] = 'A',
				["PP11"] = 'B',
				["PP12"] = 'C',
				["Click"] = 'C',
				["Touch"] = 'T',
			},
			["SNES"] = new Dictionary<string, char>
			{
				["Cursor"] = 'c',
				["Turbo"] = 't',
				["Toggle Multitap"] = 't',

				["B0"] = '0',
				["B1"] = '1',
				["B2"] = '2',
				["B3"] = '3',
				["B4"] = '4',
				["B5"] = '5',
				["B6"] = '6',
				["B7"] = '7',
				["B8"] = '8',
				["B9"] = '9',
				["B10"] = 'a',
				["B11"] = 'b',
				["B12"] = 'c',
				["B13"] = 'd',
				["B14"] = 'e',
				["B15"] = 'f',
				["B16"] = 'g',
				["B17"] = 'h',
				["B18"] = 'i',
				["B19"] = 'j',
				["B20"] = 'k',
				["B21"] = 'l',
				["B22"] = 'm',
				["B23"] = 'n',
				["B24"] = 'o',
				["B25"] = 'p',
				["B26"] = 'q',
				["B27"] = 'r',
				["B28"] = 's',
				["B29"] = 't',
				["B30"] = 'u',
				["B31"] = 'v'
			},
			["TI83"] = new Dictionary<string, char>
			{
				["UP"] = 'U',
				["DOWN"] = 'D',
				["LEFT"] = 'L',
				["RIGHT"] = 'R',
				["DOT"] = '`',
				["ON"] = 'O',
				["ENTER"] = '=',
				["PLUS"] = '+',
				["MINUS"] = '_',
				["MULTIPLY"] = '*',
				["DIVIDE"] = '/',
				["CLEAR"] = 'c',
				["EXP"] = '^',
				["DASH"] = '-',
				["PARAOPEN"] = '(',
				["PARACLOSE"] = ')',
				["TAN"] = 'T',
				["VARS"] = 'V',
				["COS"] = 'C',
				["PRGM"] = 'P',
				["STAT"] = 's',
				["MATRIX"] = 'm',
				["X"] = 'X',
				["STO"] = '>',
				["LN"] = 'n',
				["LOG"] = 'L',
				["SQUARED"] = '2',
				["NEG1"] = '1',
				["MATH"] = 'H',
				["ALPHA"] = 'A',
				["GRAPH"] = 'G',
				["TRACE"] = 't',
				["ZOOM"] = 'Z',
				["WINDOW"] = 'W',
				["Y"] = 'Y',
				["2ND"] = '&',
				["MODE"] = 'O',
				["DEL"] = 'D',
				["COMMA"] = ',',
				["SIN"] = 'S'
			},
			["C64"] = new Dictionary<string, char>
			{
				["L"] = 'L',
				["R"] = 'R',
				["F1"] = '1',
				["F3"] = '3',
				["F5"] = '5',
				["F7"] = '7',
				["Left Arrow"] = 'l',
				["Plus"] = '+',
				["Minus"] = '-',
				["Pound"] = 'l',
				["Clear/Home"] = 'c',
				["Insert/Delete"] = 'i',
				["Control"] = 'c',
				["At"] = '@',
				["Asterisk"] = '*',
				["Up Arrow"] = 'u',
				["Restore"] = 'r',
				["Run/Stop"] = 's',
				["Lck"] = 'k',
				["Colon"] = ':',
				["Semicolon"] = ';',
				["Equal"] = '=',
				["Return"] = 'e',
				["Commodore"] = 'o',
				["Left Shift"] = 's',
				["Comma"] = ',',
				["Period"] = '>',
				["Slash"] = '/',
				["Right Shift"] = 's',
				["Cursor Up/Down"] = 'u',
				["Cursor Left/Right"] = 'l',
				["Space"] = '_'
			},
			["N64"] = new Dictionary<string, char>
			{
				["C Up"] = 'u',
				["C Down"] = 'd',
				["C Left"] = 'l',
				["C Right"] = 'r',

				["A Up"] = 'U',
				["A Down"] = 'D',
				["A Left"] = 'L',
				["A Right"] = 'R',

				["DPad U"] = 'U',
				["DPad D"] = 'D',
				["DPad L"] = 'L',
				["DPad R"] = 'R',
			},
			["DGB"] = new Dictionary<string, char>
			{
				["Toggle Cable"] = 'L'
			},
			["Lynx"] = new Dictionary<string, char>
			{
				["Option 1"] = '1',
				["Option 2"] = '2'
			},
			["NGP"] = new Dictionary<string, char>
			{
				["Option"] = 'O'
			},
			["AppleII"] = new Dictionary<string, char>
			{
				["Tab"] = 't' ,
				["Return"] = 'e' ,
				["Escape"] = 'x' ,
				["Delete"] = 'b' ,
				["Space"] = 's' ,
				["Control"] = 'c' ,
				["Shift"] = '^' ,
				["Caps Lock"] = 'C' ,
				["White Apple"] = 'w' ,
				["Black Apple"] = 'b' ,
				["L"] = 'L' ,
				["R"] = 'R'
			},
			["INTV"] = new Dictionary<string, char>
			{
				["Clear"] = 'C' ,
				["Enter"] = 'E' ,
				["Top"] = 'T' ,
				["NNE"] = 'n' ,
				["NE"] = '/' ,
				["ENE"] = 'e' ,
				["ESE"] = 'e' ,
				["SE"] = '\\' ,
				["SSE"] = 's' ,
				["SSW"] = 's' ,
				["SW"] = '/' ,
				["WSW"] = 'w' ,
				["WNW"] = 'w' ,
				["NW"] = '\\' ,
				["NNW"] = 'n'
			},
			["Coleco"] = new Dictionary<string, char>
			{
				["Yellow"] = 'Y',
				["Red"] = 'R',
				["Blue"] = 'B',
				["Purple"] = 'P'
			},
			["VB"] = new Dictionary<string, char>
			{
				["L_Up"] = 'U',
				["L_Down"] = 'D',
				["L_Left"] = 'L',
				["L_Right"] = 'R',
				["R_Up"] = 'u',
				["R_Down"] = 'd',
				["R_Left"] = 'l',
				["R_Right"] = 'r',
			},
			["PCFX"] = new Dictionary<string, char>
			{
				["I"] = '1',
				["II"] = '2',
				["III"] = '3',
				["IV"] = '4',
				["V"] = '5',
				["VI"] = '6',
			}
		};
	}
}