68 lines
2 KiB
JavaScript
68 lines
2 KiB
JavaScript
const fs = require('fs');
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const file = fs.readFileSync(__dirname + '/input.txt').toString('utf-8');
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const passports = file.split('\n\n');
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const fieldNames = {
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byr: 'Birth year',
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iyr: 'Issue year',
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eyr: 'Expiration year',
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hgt: 'Height',
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hcl: 'Hair color',
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ecl: 'Eye color',
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pid: 'Passport ID',
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cid: 'Country ID'
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}, passportFields = Object.keys(fieldNames);
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const bypassed = [ 'cid' ]; // These are ignored
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const validationFuncs = {
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byr: value => value >= 1920 && value <= 2002,
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iyr: value => value >= 2010 && value <= 2020,
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eyr: value => value >= 2020 && value <= 2030,
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hgt: value => {
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let end = value.split(/[0-9]+/)[1];
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let num = value.split(end)[0];
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if (!end || !num) return false;
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if (end == 'cm') {
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return (num >= 150 && num <= 193);
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} else if (end == 'in')
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return (num >= 59 && num <= 76);
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else return false;
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},
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hcl: value => value?.match(/#[0-9|a-f]{6}/) ? true : false,
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ecl: value => value?.match(/amb|blu|brn|gry|grn|hzl|oth/) ? true : false,
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pid: value => value?.match(/^[0-9]{9}$/) ? true : false,
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cid: value => true
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}
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let invalid = 0;
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let invalidStats = {}
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passportFields.forEach(field => invalidStats[field] = 0);
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passports.forEach(passport => {
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passport = passport
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.replace(/\n/g, ' ')
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.split(' ');
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let inv = false;
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passportFields.forEach(field => {
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let h = passport.filter(h => h.split(':')[0] == field);
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if (h?.[0]) h = h[0].split(':');
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if (bypassed.indexOf(field) > -1) return;
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if (!(h[1] && validationFuncs[field](h[1]))) {
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inv = true;
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invalidStats[field] += 1;
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}
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});
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if (inv) invalid++;
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});
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let statsStr = ``;
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for (const [key, value] of Object.entries(invalidStats))
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statsStr += `${fieldNames[key]}: ${value}\n`;
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console.log(statsStr);
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console.log(`Invalid passports: ${invalid}`);
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console.log(`Valid passports: ${passports.length - invalid}`);
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console.log(`Total passports: ${passports.length}`); |