Taberareloo 用パッチ：CoreOS のリリースをチェックする

patch.check.coreos.release.tbrl.js

// ==Taberareloo==
// {
//   "name"        : "Check CoreOS Releases"
// , "description" : "Check CoreOS Releases"
// , "include"     : ["background"]
// , "version"     : "2.0.0"
// , "downloadURL" : "https://gist.github.com/YungSang/9922467/raw/patch.check.coreos.release.tbrl.js"
// }
// ==/Taberareloo==

(function() {
  var TITLE = 'Check CoreOS Releases';
  var URL   = 'http://storage.core-os.net/coreos/amd64-usr/';
  var KEY   = 'coreos_previous_version';

  var CHANNELS = ['master', 'alpha', 'beta'];

  var PREVIOUS_VERSIONS = localStorage.getItem(KEY);
  try {
    PREVIOUS_VERSIONS = JSON.parse(PREVIOUS_VERSIONS);
    if (!PREVIOUS_VERSIONS) {
      throw 'null';
    }
  }
  catch (e) {
    PREVIOUS_VERSIONS = {};
    CHANNELS.forEach(function (channel) {
      PREVIOUS_VERSIONS[channel] = '0.0.0';
    });
  }

  Menus._register({
    type     : 'separator',
    contexts : ['all']
  });
  Menus._register({
    title    : TITLE,
    contexts : ['all'],
    onclick  : function(info, tab) {
      CHANNELS.forEach(function (channel) {
        check(channel);
      });
    }
  });
  Menus.create();

  function check(channel) {
    request(URL + channel + '/version.txt?_=' + (new Date()).getTime()).then(function (res) {
      var version = res.responseText;

      var current_version = version.extract(/COREOS_VERSION=([\d.+-]+)/);

      if (semver.gt(current_version, PREVIOUS_VERSIONS[channel])) {
        TBRL.Notification.notify({
          title   : TITLE,
          message : 'New ' + channel + ' Version ' + current_version + ' Released!',
          onclick : function () {
            window.open(URL + channel);
            this.close();
          }
        });
      } else {
        TBRL.Notification.notify({
          title   : TITLE,
          message : 'No New ' + channel + ' Version Released Yet',
          timeout : 3,
          onclick : function () {
            this.close();
          }
        });
      }
      PREVIOUS_VERSIONS[channel] = current_version;
      localStorage.setItem(KEY, JSON.stringify(PREVIOUS_VERSIONS));
    });
  }

  CHANNELS.forEach(function (channel) {
    check(channel);
  });
})();