import { Vec2 } from '@alexaegis/advent-of-code-lib/model';

export enum FieldType {
	EMPTY = '.',
	ASTEROID = '#',
}

export const parseLines = (input: string): Map<string, Vec2> => {
	const matrix = input
		.split(/\r?\n/)
		.filter((line) => !!line)
		.map((line) => [...line].filter((c) => /^(\.|#)$/.test(c)).map((a) => a as FieldType));

	const map = new Map<string, Vec2>();
	for (let i = 0; i < matrix.length; i++) {
		const row = matrix[i];
		if (row) {
			for (let j = 0; j < row.length; j++) {
				const coord = new Vec2(j, i);
				if (row[j] === FieldType.ASTEROID) {
					map.set(coord.toString(), coord);
				}
			}
		}
	}
	return map;
};