#!/bin/node

const fs = require('fs');

fs.readFile('input.txt', (err, data) => {
    const passports = [];
    data.toString()
        .split('\n\n')
        .map(line => line.replaceAll('\n', ' '))
        .map((line, index) => line.split(' ').map(f => {
            if (!passports[index]) passports[index] = {};
            const [key, value] = f.split(':');
            passports[index][key] = value;
        }));

    const requiredFields = [
        ['byr', v => {
            const number = Number(v);
            return v.length === 4 && number >= 1920 && number <= 2002;
        }],
        ['iyr', v => {
            const number = Number(v);
            return v.length === 4 && number >= 2010 && number <= 2020;
        }],
        ['eyr', v => {
            const number = Number(v);
            return v.length === 4 && number >= 2020 && number <= 2030;
        }],
        ['hgt', v => {
            const n = Number(v.substring(0, v.length - 2));
            if (v.endsWith('cm')) return n >= 150 && n <= 193;
            else if (v.endsWith('in')) return n >= 59 && n <= 76;
            else return false;
        }],
        ['hcl', v => /^#[0-9a-f]{6}$/.test(v)],
        ['ecl', v => /^(amb|blu|brn|gry|grn|hzl|oth)$/.test(v)],
        ['pid', v => /^[0-9]{9}$/.test(v)],
    ];

    let q1 = 0, q2 = 0;
    for (const passport of passports) {
        console.log(passport);

        let q1Fields = 0, q2Fields = 0;
        for (const [fieldName, validator] of requiredFields) {
            if (Object.keys(passport).indexOf(fieldName) >= 0) {
                q1Fields++;

                if (validator(passport[fieldName])) q2Fields++;
                console.log('>', fieldName, passport[fieldName], validator(passport[fieldName]));
            }
        }
        console.log('>', q1Fields + '/' + requiredFields.length, q2Fields + '/' + requiredFields.length);

        if (q1Fields === requiredFields.length) q1++;
        if (q2Fields === requiredFields.length) q2++;
    }

    console.log(q1 + '/' + passports.length, q2 + '/' + passports.length);
});