namespace Dashboard.Events
{
    [Flags]
    public enum ModifierKeys
    {
        None = 0,
        LeftBitPos  = 8,
        RightBitPos = 16,

        Shift   = (1 << 0),
        Control = (1 << 1),
        Alt     = (1 << 2),
        Meta    = (1 << 3),

        NumLock    = (1 << 4),
        CapsLock   = (1 << 5),
        ScrollLock = (1 << 6),

        LeftShift    = (Shift   << LeftBitPos),
        LeftControl  = (Control << LeftBitPos),
        LeftAlt      = (Alt     << LeftBitPos),
        LeftMeta     = (Meta    << LeftBitPos),

        RightShift   = (Shift   << RightBitPos),
        RightControl = (Control << RightBitPos),
        RightAlt     = (Alt     << RightBitPos),
        RightMeta    = (Meta    << RightBitPos),
    }

    public enum KeyCode
    {
        // TODO:
    }

    public enum ScanCode
    {
        // This scan code table is based on the Win32 scan code table.
        // See https://learn.microsoft.com/en-us/windows/win32/inputdev/about-keyboard-input
        Error = 0xFF,
        SystemPowerDown = 0xE05E,
        SystemSleep = 0xE05F,
        SystemWakeUp = 0xE063,

        A = 0x1E,
        B = 0x30,
        C = 0x2E,
        D = 0x20,
        E = 0x12,
        F = 0x21,
        G = 0x22,
        H = 0x23,
        I = 0x17,
        J = 0x24,
        K = 0x25,
        L = 0x26,
        M = 0x32,
        N = 0x31,
        O = 0x18,
        P = 0x19,
        Q = 0x10,
        R = 0x13,
        S = 0x1F,
        T = 0x14,
        U = 0x16,
        V = 0x2F,
        W = 0x11,
        X = 0x2D,
        Y = 0x15,
        Z = 0x2C,

        D1 = 0x02,
        D2 = 0x03,
        D3 = 0x04,
        D4 = 0x05,
        D5 = 0x06,
        D6 = 0x07,
        D7 = 0x08,
        D8 = 0x09,
        D9 = 0x0A,
        D0 = 0x0B,

        Return = 0x1C,
        Esc = 0x01,
        Delete = 0x0E,
        Tab = 0x0F,
        Space = 0x39,
        Dash = 0x0C,
        Equals = 0x0D,
        LBracket = 0x1A,
        RBracket = 0x1B,
        Backslash = 0x2B,
        Semicolon = 0x27,
        Apostrophe = 0x28,
        Grave = 0x29,
        Comma = 0x33,
        Period = 0x34,
        ForwardSlash = 0x35,
        CapsLock = 0x3A,
        F1 = 0x3B,
        F2 = 0x3C,
        F3 = 0x3D,
        F4 = 0x3E,
        F5 = 0x3F,
        F6 = 0x40,
        F7 = 0x41,
        F8 = 0x42,
        F9 = 0x43,
        F10 = 0x44,
        F11 = 0x45,
        F12 = 0x46,
        PrintScr = 0xE037,
        ScrollLock = 0x46,
        Pause = 0xE046,
        Insert = 0xE052,
        Home = 0xE047,
        PageUp = 0xE049,
        Backspace = 0xE053,
        End = 0xE04F,
        PageDown = 0xE051,
        RightArrow = 0xE04D,
        LeftArrow = 0xE04B,
        DownArrow = 0xE050,
        UpArrow = 0xE048,
        NumLock = 0xE045,
        NumDiv = 0xE035,
        NumMul = 0x37,
        NumSub = 0x4A,
        NumAdd = 0x4E,
        NumEnter = 0xE01C,
        Num1 = 0x4F,
        Num2 = 0x50,
        Num3 = 0x51,
        Num4 = 0x4B,
        Num5 = 0x4C,
        Num6 = 0x4D,
        Num7 = 0x47,
        Num8 = 0x48,
        Num9 = 0x49,
        Num0 = 0x52,
        NumDecimal = 0x53,
        NumBackslash = 0x56,
        NumEquals = 0x59,
        Application = 0xE05D,
        F13 = 0x64,
        F14 = 0x65,
        F15 = 0x66,
        F16 = 0x67,
        F17 = 0x68,
        F18 = 0x69,
        F19 = 0x6A,
        F20 = 0x6B,
        F21 = 0x6C,
        F22 = 0x6D,
        F23 = 0x6E,
        F24 = 0x76,
        NumComma = 0x7E,
        International1 = 0x73,
        International2 = 0x70,
        International3 = 0x7D,
        International4 = 0x79,
        International5 = 0x7B,
        International6 = 0x5C,
        Lang1 = 0x72,
        Lang2 = 0x71,
        Lang3 = 0x78,
        Lang4 = 0x77,
        LCtrl = 0x1D,
        LShift = 0x2A,
        LWin = 0xE05B,
        LAlt = 0x38,
        RAlt = 0xE038,
        RWin = 0xE05C,
        RCtrl = 0xE01D,
        RShift = 0x36,
        NextTrack = 0xE019,
        PrevTrack = 0xE010,
        Stop = 0xE024,
        PlayPause = 0xE022,
        VolUp = 0xE030,
        VolDown = 0xE029,
        Configuration = 0xE06D,
        Email = 0xE06C,
        Calculator = 0xE021,
        Browser = 0xE06B,
        Search = 0xE065,
        HomePage = 0xE032,
        Back = 0xE06A,
        Forward = 0xE69,
        Halt = 0xE068,
        Refresh = 0xE67,
        Bookmarks = 0xE066,
    }

    public class KeyboardButtonEventArgs(KeyCode keyCode, ScanCode scanCode, ModifierKeys modifierKeys, bool up)
        : UiEventArgs(up ? UiEventType.KeyUp : UiEventType.KeyDown)
    {
        public KeyCode KeyCode { get; } = keyCode;
        public ScanCode ScanCode { get; } = scanCode;
        public ModifierKeys ModifierKeys { get; } = modifierKeys;
    }

    public class TextInputEventArgs(string text) : UiEventArgs(UiEventType.TextEdit)
    {
        public string Text { get; } = text;
    }

    public class TextEditEventArgs(string candidate, int cursor, int length) : UiEventArgs(UiEventType.TextEdit)
    {
        public string Candidate { get; } = candidate;
        public int Cursor { get; } = cursor;
        public int Length { get; } = length;
    }
}