class Game {
	#tubes;
	#selectedTubeIndex;
	
	constructor(nbTubes, tubeLevel)
	{
		this.#tubes = [];
		this.#selectedTubeIndex = -1;

		for (let i = 0; i < nbTubes; i++)
		{
			this.#tubes.push(new Tube(tubeLevel));
		}
	}
	
	tubeAt(tubeIndex)
	{
		if (!this.isInRange(tubeIndex)) return null;
		
		return this.#tubes[tubeIndex];
	}
	
	selectedTubeIndex()
	{
		return this.#selectedTubeIndex;
	}

	selectedTube()
	{
		if (this.#selectedTubeIndex == -1) return null;
		
		return this.#tubes[this.#selectedTubeIndex];
	}
	
	selectTubeAt(index)
	{
		if (this.isInRange(index))
		{
			this.#selectedTubeIndex = index;
		}
	}
	
	removeTube(tube)
	{
		let tubeIndex = this.#tubes.indexOf(tube);
		
		if (tubeIndex != -1)
		{
			this.#tubes.splice(tubeIndex, 1)[0];
			if (tubeIndex == this.#selectedTubeIndex) this.unselectTube();
		}
	}
	
	clean()
	{
		this.#tubes = []
		this.unselectTube();
	}
	
	unselectTube()
	{
		this.#selectedTubeIndex = -1;
	}
	
	tubesNumber()
	{
		return this.#tubes.length;
	}
	
	isInRange(index)
	{
		return index >= 0 && index < this.#tubes.length;
	}

	isComplete()
	{
		return this.#tubes.every(
			tube => tube.isComplete() || tube.isEmpty()
		);
	}
}