export default class Tile {
	constructor(x, y, name) {
		this.x = x;
		this.y = y;
		this.name = name;
	}
}

function realNames(base, override = {}) {
	return {
		topLeft: override.topLeft || base+"-top-l",
		top: override.top || base+"-top",
		topRight: override.topRight || base+"-top-r",
		topBoth: override.topBoth || base+"-top-lr",

		left: override.left || base+"-l",
		mid: override.mid || base,
		right: override.right || base+"-r",
		both: override.both || base+"-lr",

		bottomLeft: override.bottomLeft || base+"-bottom-l",
		bottom: override.bottom || base+"-bottom",
		bottomRight: override.bottomRight || base+"-bottom-r",
		bottomBoth: override.bottomBoth || base+"-bottom-lr",
	};
}

function getName(x, y, size, names) {
	let name = null;

	if (size.x <= 1) {
		if (y === 0)
			name = names.topBoth;
		else if (y === size.y - 1)
			name = names.bottomBoth;
		else
			name = names.both;
	} else {
		if (y === 0) {
			if (x === 0)
				name = names.topLeft;
			else if (x === size.x - 1)
				name = names.topRight;
			else
				name = names.top;
		} else if (y === size.y - 1) {
			if (x === 0)
				name = names.bottomLeft;
			else if (x === size.x - 1)
				name = names.bottomRight;
			else
				name = names.bottom;
		} else {
			if (x === 0)
				name = names.left;
			else if (x === size.x - 1)
				name = names.right;
			else
				name = names.mid;
		}
	}

	if (!name)
		name = "--invalid-"+x+"-"+y+"--";

	return name;
}

Tile.createBox = function(pos, size, base, names) {
	names = realNames(base, names);
	let arr = [];

	for (let x = 0; x < size.x; ++x) {
		for (let y = 0; y < size.y; ++y) {
			arr.push(new Tile(
				pos.x + x, pos.y + y, getName(x, y, size, names)));
		}
	}

	return arr;
}

function getNameLine(x, width, names) {
	if (width === 1)
		return names.both;
	else if (x === 0)
		return names.left;
	else if (x === width - 1)
		return names.right;
	else
		return names.mid;
}

Tile.createLine = function(pos, width, base, names) {
	names = realNames(base, names);
	let arr = [];

	for (let x = 0; x < width; ++x) {
		arr.push(new Tile(
			pos.x + x, pos.y, getNameLine(x, width, names)));
	}

	return arr;
}