const { Glib, Sets, Vector, twodee } = require('../../lib');

const parse = (input) =>
  Glib.fromLines(input).map((line) => {
    const [id, at, offset, size] = line.split(' ');
    const offsetPoint = Vector.fromString(`(${offset.slice(0, -1)})`);
    const sizeVector = Vector.fromString(`(${size.replace('x', ',')})`);
    const rectangle = new twodee.Rectangle(offsetPoint, sizeVector);
    return {
      id: id.slice(1),
      rectangle,
    };
  });

module.exports = {
  '1': (input) => {
    return parse(input)
      .flatMap(({ rectangle }) => rectangle.allPoints().map((pt) => pt.string))
      .frequency()
      .glibValues.filter((v) => v >= 2n).length;
  },
  '2': (input) => {
    const claimed = parse(input)
      .flatMap(({ rectangle }) => rectangle.allPoints().map((pt) => pt.string))
      .frequency();
    return parse(input)
      .filter(({ rectangle }) =>
        rectangle.allPoints().every((pt) => claimed.get(pt.string) === 1n),
      )
      .map((i) => i.id)
      .join();
  },
};