'use strict';

const https = require('https');
const foldyNames = process.argv[2].split(',');

const results = {};
process.on('exit', function () {
  console.log(JSON.stringify(results));
});

for (let i = 0; i < 10; i += 1) {
  nextJob();
}

function nextJob () {
  if (foldyNames.length === 0) return;
  queueJob(foldyNames.shift());
}

function queueJob (foldyName) {
  getLatestTime(foldyName, function (error, latestTime) {
    if (error) console.error(error);
    results[foldyName] = (new Date(latestTime)).getTime();
    setTimeout(nextJob, 0);
  });
}

function getLatestTime (foldyName, cb) {
  https.get('https://registry.npmjs.org/' + foldyName, function (response) {
    let s = '';
    response.on('data', function (chunk) {
      s += chunk;
    });
    response.on('end', function () {
      const json = JSON.parse(s);
      const distTags = json['dist-tags'];
      if (!distTags) return cb(undefined, Date.now()); // express-with-jade
      const latest = distTags.latest;
      cb(undefined, json.time[latest]);
    });
    response.on('error', function (error) {
      cb(error);
    });
  }).on('error', function (error) {
    cb(error);
  });
}