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

const REQUIRED_FIELDS = [
  'byr',
  'iyr',
  'eyr',
  'hgt',
  'hcl',
  'ecl',
  'pid',
  // 'cid',
];

const VALIDATORS = [
  ({ byr }) => {
    if (byr.length !== 4) {
      return false;
    }
    const p = parseInt(byr, 10);
    if (byr !== p.toString()) {
      return false;
    }
    return p >= 1920 && p <= 2002;
  },
  ({ iyr }) => {
    if (iyr.length !== 4) {
      return false;
    }
    const p = parseInt(iyr, 10);
    if (iyr !== p.toString()) {
      return false;
    }
    return p >= 2010 && p <= 2020;
  },
  ({ eyr }) => {
    if (eyr.length !== 4) {
      return false;
    }
    const p = parseInt(eyr, 10);
    if (eyr !== p.toString()) {
      return false;
    }
    return p >= 2020 && p <= 2030;
  },
  ({ hgt }) => {
    const p = parseInt(hgt, 10);
    if (hgt.endsWith('cm')) {
      if (hgt !== p.toString() + 'cm') {
        return false;
      }
      return p >= 150 && p <= 193;
    } else if (hgt.endsWith('in')) {
      if (hgt !== p.toString() + 'in') {
        return false;
      }
      return p >= 59 && p <= 76;
    }
    return false;
  },
  ({ hcl }) => {
    return hcl.replace(/#[0-9a-f]{6}/, '') === '';
  },
  ({ ecl }) => {
    // console.log(`${hcl} ${hcl.replace(/#[0-9a-f]{6}/, '')}`);
    return ecl.replace(/(amb|blu|brn|gry|grn|hzl|oth)/, '') === '';
  },
  ({ pid }) => {
    return pid.replace(/\d{9}/, '') === '';
  },
];

const parse = (input) =>
  Glib.fromSplit(input, '\n\n').map((l) =>
    Object.fromEntries(
      Glib.fromSplit(l.trim().replace(/\s+/g, ' '), ' ').map((pair) =>
        pair.split(':'),
      ),
    ),
  );

module.exports = {
  '1': (input) =>
    parse(input).filter((i) =>
      REQUIRED_FIELDS.glib.every((field) => i.hasOwnProperty(field)),
    ).length,
  '2': (input) =>
    parse(input)
      .filter((i) =>
        REQUIRED_FIELDS.glib.every((field) => i.hasOwnProperty(field)),
      )
      .filter((i) => VALIDATORS.glib.every((vf) => vf(i))).length,
};