const { Glib } = require('../../lib');

const VALUE = {
  '(': 1n,
  ')': -1n,
};

module.exports = {
  '1': (input) =>
    Glib.fromIterable(input)
      .map((char) => VALUE[char] || 0n)
      .sum(),
  '2': (input) =>
    Glib.fromIterable(input).partialReduce(
      ([floor], char, index) => [floor + (VALUE[char] || 0n), index + 1],
      ([floor]) => floor >= 0,
      [0n, 0],
    )[1],
};