/// <reference path="../../Game.ts" />
/// <reference path="Input.ts" />

class Keyboard {

    constructor(game: Game) {

        this._game = game;
        this.start();

    }

    private _game: Game;

    private _keys = {};

    public start() {

        document.body.addEventListener('keydown', (event: KeyboardEvent) => this.onKeyDown(event), false);
        document.body.addEventListener('keyup', (event: KeyboardEvent) => this.onKeyUp(event), false);

    }

    public onKeyDown(event: KeyboardEvent) {

        if (!this._keys[event.keyCode])
        {
            this._keys[event.keyCode] = { isDown: true, timeDown: this._game.time.now, timeUp: 0 };
        }
        else
        {
            this._keys[event.keyCode].isDown = true;
            this._keys[event.keyCode].timeDown = this._game.time.now;
        }

    }

    public onKeyUp(event: KeyboardEvent) {

        if (!this._keys[event.keyCode])
        {
            this._keys[event.keyCode] = { isDown: false, timeDown: 0, timeUp: this._game.time.now };
        }
        else
        {
            this._keys[event.keyCode].isDown = false;
            this._keys[event.keyCode].timeUp = this._game.time.now;
        }

    }

    public reset() {

        for (var key in this._keys)
        {
            this._keys[key].isDown = false;
        }

    }

    public justPressed(keycode: number, duration?: number = 250): bool {

        if (this._keys[keycode] && this._keys[keycode].isDown === true && (this._game.time.now - this._keys[keycode].timeDown < duration))
        {
            return true;
        }
        else
        {
            return false;
        }

    }

    public justReleased(keycode: number, duration?: number = 250): bool {

        if (this._keys[keycode] && this._keys[keycode].isDown === false && (this._game.time.now - this._keys[keycode].timeUp < duration))
        {
            return true;
        }
        else
        {
            return false;
        }

    }

    public isDown(keycode: number): bool {

        if (this._keys[keycode])
        {
            return this._keys[keycode].isDown;
        }
        else
        {
            return false;
        }

    }

    // Letters
    public static A: number = "A".charCodeAt(0);
    public static B: number = "B".charCodeAt(0);
    public static C: number = "C".charCodeAt(0);
    public static D: number = "D".charCodeAt(0);
    public static E: number = "E".charCodeAt(0);
    public static F: number = "F".charCodeAt(0);
    public static G: number = "G".charCodeAt(0);
    public static H: number = "H".charCodeAt(0);
    public static I: number = "I".charCodeAt(0);
    public static J: number = "J".charCodeAt(0);
    public static K: number = "K".charCodeAt(0);
    public static L: number = "L".charCodeAt(0);
    public static M: number = "M".charCodeAt(0);
    public static N: number = "N".charCodeAt(0);
    public static O: number = "O".charCodeAt(0);
    public static P: number = "P".charCodeAt(0);
    public static Q: number = "Q".charCodeAt(0);
    public static R: number = "R".charCodeAt(0);
    public static S: number = "S".charCodeAt(0);
    public static T: number = "T".charCodeAt(0);
    public static U: number = "U".charCodeAt(0);
    public static V: number = "V".charCodeAt(0);
    public static W: number = "W".charCodeAt(0);
    public static X: number = "X".charCodeAt(0);
    public static Y: number = "Y".charCodeAt(0);
    public static Z: number = "Z".charCodeAt(0);

    // Numbers
    public static ZERO: number = "0".charCodeAt(0);
    public static ONE: number = "1".charCodeAt(0);
    public static TWO: number = "2".charCodeAt(0);
    public static THREE: number = "3".charCodeAt(0);
    public static FOUR: number = "4".charCodeAt(0);
    public static FIVE: number = "5".charCodeAt(0);
    public static SIX: number = "6".charCodeAt(0);
    public static SEVEN: number = "7".charCodeAt(0);
    public static EIGHT: number = "8".charCodeAt(0);
    public static NINE: number = "9".charCodeAt(0);

    // Numpad
    public static NUMPAD_0: number = 96;
    public static NUMPAD_1: number = 97;
    public static NUMPAD_2: number = 98;
    public static NUMPAD_3: number = 99;
    public static NUMPAD_4: number = 100;
    public static NUMPAD_5: number = 101;
    public static NUMPAD_6: number = 102;
    public static NUMPAD_7: number = 103;
    public static NUMPAD_8: number = 104;
    public static NUMPAD_9: number = 105;
    public static NUMPAD_MULTIPLY: number = 106;
    public static NUMPAD_ADD: number = 107;
    public static NUMPAD_ENTER: number = 108;
    public static NUMPAD_SUBTRACT: number = 109;
    public static NUMPAD_DECIMAL: number = 110;
    public static NUMPAD_DIVIDE: number = 111;

    // Function Keys
    public static F1: number = 112;
    public static F2: number = 113;
    public static F3: number = 114;
    public static F4: number = 115;
    public static F5: number = 116;
    public static F6: number = 117;
    public static F7: number = 118;
    public static F8: number = 119;
    public static F9: number = 120;
    public static F10: number = 121;
    public static F11: number = 122;
    public static F12: number = 123;
    public static F13: number = 124;
    public static F14: number = 125;
    public static F15: number = 126;

    // Symbol Keys
    public static COLON: number = 186;
    public static EQUALS: number = 187;
    public static UNDERSCORE: number = 189;
    public static QUESTION_MARK: number = 191;
    public static TILDE: number = 192;
    public static OPEN_BRACKET: number = 219;
    public static BACKWARD_SLASH: number = 220;
    public static CLOSED_BRACKET: number = 221;
    public static QUOTES: number = 222;

    // Other Keys
    public static BACKSPACE: number = 8;
    public static TAB: number = 9;
    public static CLEAR: number = 12;
    public static ENTER: number = 13;
    public static SHIFT: number = 16;
    public static CONTROL: number = 17;
    public static ALT: number = 18;
    public static CAPS_LOCK: number = 20;
    public static ESC: number = 27;
    public static SPACEBAR: number = 32;
    public static PAGE_UP: number = 33;
    public static PAGE_DOWN: number = 34;
    public static END: number = 35;
    public static HOME: number = 36;
    public static LEFT: number = 37;
    public static UP: number = 38;
    public static RIGHT: number = 39;
    public static DOWN: number = 40;
    public static INSERT: number = 45;
    public static DELETE: number = 46;
    public static HELP: number = 47;
    public static NUM_LOCK: number = 144;

}