class Drawer
{
	#tubeDrawObjects;
	#scale;
	
	constructor(_padding, _scale, _game)
	{
		this.#tubeDrawObjects = []
		this.#scale = _scale;
		
		this.#initializeTubeDrawObjects(_game, _padding);
		this.#computeCanvasSize(_padding);
	}

	applySelectedEffect(index)
	{
		this.#tubeDrawObjects[index].y -= this.#scale;
	}

	removeSelectedEffect(index)
	{
		this.#tubeDrawObjects[index].y += this.#scale;
	}
	
	#initializeTubeDrawObjects(_game, _padding)
	{
		let _tubeX = _padding;
		let _tubeY = _padding + this.#scale;

		for (let tbIndex = 0; tbIndex < _game.tubesNumber(); tbIndex++)
		{
			let tubeDrawObject = new TubeDrawObject(_tubeX, _tubeY, _game.tubeAt(tbIndex), this.#scale);
			this.#tubeDrawObjects.push(tubeDrawObject);

			_tubeX += this.#scale + _padding;
		}
	}

	#computeCanvasSize(_padding)
	{
		let w = this.#tubeDrawObjects.reduce((res, value) => res + value.width + _padding, _padding);
		let h = this.#tubeDrawObjects[0].height + 2 * _padding + this.#scale;

		createCanvas(w, h);
	}
	
	draw()
	{
		clear();
		background('orange');

		this.#tubeDrawObjects.forEach(obj => obj.draw());
	}
	
	getTubeIdAt(x, y)
	{
		for (let i = 0; i < this.#tubeDrawObjects.length; i++)
		{
			if (this.#tubeDrawObjects[i].inbounds(x, y)) return i;
		}

		return -1;
	}
}