'use strict';

var oses = [
  {
    name: 'macOS Sierra',
    version: '10.12.6',
    date: '2018-09-26',
    channel: 'beta',
    url: 'https://support.apple.com/en-us/HT208202'
  },
  {
    name: 'OS X El Capitan',
    version: '10.11.6',
    date: '2018-07-09',
    lts: true,
    channel: 'stable',
    url: 'https://support.apple.com/en-us/HT206886'
  },
  {
    name: 'OS X Yosemite',
    version: '10.10.5',
    date: '2017-07-19',
    channel: 'beta',
    url: 'https://support.apple.com/en-us/HT210717'
  }
];

var headers = {
  Connection: 'keep-alive',
  'Cache-Control': 'max-age=0',
  'Upgrade-Insecure-Requests': '1',
  'User-Agent':
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36',
  'Sec-Fetch-Dest': 'document',
  Accept:
    'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
  'Sec-Fetch-Site': 'none',
  'Sec-Fetch-Mode': 'navigate',
  'Sec-Fetch-User': '?1',
  'Accept-Language': 'en-US,en;q=0.9,sq;q=0.8'
};

module.exports = function (request) {
  var all = { download: '', releases: [] };

  return Promise.all(
    oses.map(function (os) {
      return request({
        method: 'GET',
        url: os.url,
        headers: headers
      }).then(function (resp) {
        var m = resp.body.match(/(http[^>]+Install[^>]+.dmg)/);
        var download = m && m[1];
        ['macos', 'linux'].forEach(function (osname) {
          all.releases.push({
            version: os.version,
            lts: os.lts || false,
            channel: os.channel || 'beta',
            date: os.date,
            os: osname,
            arch: 'amd64',
            ext: 'dmg',
            hash: '-',
            download: download
          });
        });
      });
    })
  ).then(function () {
    all.releases.sort(function (a, b) {
      if ('10.11.6' === a.version) {
        return -1;
      }
      if (a.date > b.date) {
        return 1;
      }
      if (a.date < b.date) {
        return -1;
      }
    });
    return all;
  });
};

if (module === require.main) {
  module.exports(require('@root/request')).then(function (all) {
    console.info(JSON.stringify(all, null, 2));
  });
}