class Hand {

	constructor(keyMapper) {
		this.keyMapper = keyMapper;
		this.pressingFinger = KeyButton.NONE_FINGER;
		this.prevFingerSprite = null;

		this.hand = game.add.image(0, Hand.DEFAULT_Y_PX, "hand_palm");
		this.hand.anchor.set(0.5);
		this.hand.scale.set(2);

		this.thumb = game.add.image(0, 0, "hand_thumb");
		this.thumb.alpha = 0.5;
		this.hand.addChild(this.thumb);

		this.index_finger = game.add.image(0, 0, "hand_index_finger");
		this.index_finger.alpha = 0.5;
		this.hand.addChild(this.index_finger);

		this.middle_finger = game.add.image(0, 0, "hand_middle_finger");
		this.middle_finger.alpha = 0.5;
		this.hand.addChild(this.middle_finger);

		this.ring_filger = game.add.image(0, 0, "hand_little_finger");
		this.ring_filger.alpha = 0.5;
		this.hand.addChild(this.ring_filger);

		this.little_finger = game.add.image(0, 0, "hand_ring_finger");
		this.little_finger.alpha = 0.5;
		this.hand.addChild(this.little_finger);

		let mask = game.add.graphics();
		mask.beginFill(0xffffff);
		mask.drawRect(100, 300, 1028, 360);
		this.hand.mask = mask;
	}

	move(sprite, x, y) {
		sprite.x = x;
		sprite.y = y;
	}

	moveTo(key) {
	}

	moveToDefaultPosition() {
		this.moveRow(3, null);
		this.unhighlightOffFinger(KeyButton.NONE_FINGER);
	}


	moveRow(rowNo, key) {
		let rowIndex = rowNo - 1;
		this.hand.y = Hand.DEFAULT_Y_PX + Keyboard.DEFAULT_KEY_SIZE_PX * rowIndex;

		this.moveColumn(rowNo, key);
	}

	moveColumn(rowNo, key) {
	}


	getFingerSprite(fingerNo) {
		let fingerSprite = null;
		switch(fingerNo) {
			case KeyButton.THUMB:
			fingerSprite = this.thumb;
			break;
			case KeyButton.INDEX_FINGER:
			case KeyButton.INDEX_FINGER_BASELINE:
			fingerSprite = this.index_finger;
			break;
			case KeyButton.MIDDLE_FINGER:
			fingerSprite = this.middle_finger;
			break;
			case KeyButton.RING_FINGER:
			fingerSprite = this.ring_filger;
			break;
			case KeyButton.LITTLE_FINGER:
			fingerSprite = this.little_finger;
			break;
		}
		return fingerSprite;
	}

	highlightOnFinger(fingerNo) {
		// console.log(fingerNo);
		let pressingFingerSprite = this.getFingerSprite(fingerNo);
		if(pressingFingerSprite === this.prevFingerSprite)
			return;

		if(this.prevFingerSprite !== null)
			this.unhighlightOffFinger();

		if(pressingFingerSprite !== null) {
			// console.log(pressingFingerSprite);
			pressingFingerSprite.tint = 0xffff00;
			pressingFingerSprite.alpha = 1;
		}

		this.prevFingerSprite = pressingFingerSprite;
	}

	unhighlightOffFinger() {
		if(this.prevFingerSprite === null)
			return;
		this.prevFingerSprite.tint = 0xffffff;
		this.prevFingerSprite.alpha = 0.5;

		this.prevFingerSprite = null;
	}

}

Hand.DEFAULT_Y_PX		= 540;	// 680;



class LeftHand extends Hand {

	constructor(keyMapper) {
		super(keyMapper);

		this.move(this.thumb, 126, -50);
		this.move(this.index_finger, 96, -102);
		this.move(this.middle_finger, 58, -116);
		this.move(this.ring_filger, 32, -110);
		this.move(this.little_finger, 4, -106);
		this.moveToDefaultPosition();
	}

	moveTo(key) {
		if(key === undefined)
			return;

		// console.log(key);
		let keyCode = this.keyMapper.getKeyIDOfText(key.normalText);

		if(keyCode != "Space")
			this.moveRow(key.row, key);
		else
			this.moveRow(3, key);

		switch(key.keyCode) {
			case "Key5":
			case "KeyT":
			case "KeyG":
			case "KeyB":
			this.moveColumn(5, key);
			break;
		}

		this.highlightOnFinger(key.fingerType);
	}

	moveColumn(rowNo, key) {
		let rowIndex = rowNo - 1;
		this.hand.x = LeftHand.DEFAULT_X_PX + (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * rowIndex;

		if(key === null)
			return;

		let keyCode = this.keyMapper.getKeyIDOfText(key.normalText);
		switch(keyCode) {
			case "Key5":
			case "KeyT":
			case "KeyG":
			case "KeyB":
			this.hand.x += Keyboard.DEFAULT_KEY_SIZE_PX;
			break;

			case "ShiftLeft":
			this.hand.x = LeftHand.DEFAULT_X_PX;
			break;
		}
	}

}

LeftHand.DEFAULT_X_PX	= 100;



class RightHand extends Hand {

	constructor(keyMapper) {
		super(keyMapper);

		this.hand.scale.x *= -1;

		this.move(this.thumb, 126, -50);
		this.move(this.index_finger, 96, -102);
		this.move(this.middle_finger, 58, -116);
		this.move(this.ring_filger, 32, -110);
		this.move(this.little_finger, 4, -106);
		this.moveToDefaultPosition();
	}

	moveTo(key) {
		if(key === undefined)
			return;

		// console.log(key);
		let keyCode = this.keyMapper.getKeyIDOfText(key.normalText);

		if(keyCode != "Space")
			this.moveRow(key.row, key);
		else
			this.moveRow(3, key);

		switch(key.keyCode) {
			case "Key5":
			case "KeyT":
			case "KeyG":
			case "KeyB":
			this.moveColumn(5, key);
			break;
		}

		this.highlightOnFinger(key.fingerType);
	}

	moveColumn(rowNo, key) {
		let rowIndex = rowNo - 1;
		this.hand.x = RightHand.DEFAULT_X_PX + (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * rowIndex;

		if(key === null)
			return;

		let keyCode = this.keyMapper.getKeyIDOfText(key.normalText);
		switch(keyCode) {
			case "Key6":
			case "KeyY":
			case "KeyH":
			case "KeyN":
			this.hand.x -= Keyboard.DEFAULT_KEY_SIZE_PX;
			break;

			case "Minus":
			case "BracketLeft":
			case "Quote":
			this.hand.x += (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * 3;
			break;

			case "Equal":
			case "BracketRight":
			this.hand.x += (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * 5;
			break;

			case "Backslash":
			this.hand.x += (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * 7;
			break;

			case "Enter":
			this.hand.x = RightHand.DEFAULT_X_PX + (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * 6;
			break;

			case "ShiftRight":
			this.hand.x = RightHand.DEFAULT_X_PX + (Keyboard.DEFAULT_KEY_SIZE_PX / 2) * 6;
			break;
		}
	}

}

RightHand.DEFAULT_X_PX	= 810;