webdev-setup-tools-gems/lib/installGems.js

Set up required gems for development

/**
 * Created by CDejarl1 on 8/30/2017.
 */
const setup = require('webdev-setup-tools');
const os = require('os');

const operatingSystem = os.platform().trim();
const windows = (operatingSystem === 'win32');

const gemGlobals = setup.getProjectGlobals('ruby') || {};
const globalGems = gemGlobals.gems || {};
const formatOutput = setup.getOutputOptions();

let installGems = () => {
  let gemVersionPattern = /([a-z-A-Z0-9]+) \(([0-9]+(?:\.[0-9]+)+)/g;
  let getGlobals = modules => setup.getAllUserGlobals(modules, gemVersionPattern);
  let findVersion = (dependency, projectGlobals) => {
    //powershell.exe -command "gem list `\"^^sass`$`\" -r -a"
    let searchPattern = (windows) ? '`\\"^^' + dependency + '`$`\\"' : '^' + dependency + '$';
    let gemListRemote = setup.getSystemCommand('gem list ' + searchPattern + ' -r -a');
    return setup.findHighestCompatibleVersion(dependency, projectGlobals, gemListRemote);
  };
  let localGems;
  let remoteGems;
  let gemUpdates;
  let gemListLocal = setup.getSystemCommand('gem list');
  console.log('getting installed gems.');
  return setup.findUserGlobals(gemListLocal, getGlobals)
    .then(globals => {
      localGems = globals;
      return setup.runListOfPromises(globalGems, findVersion);
    })
    .then(gems => {
      remoteGems = gems;
      gemUpdates = setup.findRequiredAndOptionalUpdates(localGems, globalGems, remoteGems);
      if (gemUpdates.required.length > 0) {
        let gemInstall = setup.getSystemCommand(setup.getInstallationCommand(gemUpdates.required, 'gem install', ':'));
        return setup.executeSystemCommand(gemInstall, formatOutput);
      }
    })
    .then(() => {
      if (gemUpdates.optional.length > 0) {
        console.log('gem updates exist for the following packages: ');
        setup.listOptionals(gemUpdates.optional);
        return setup.confirmOptionalInstallation('do you want to install these optional gem updates now (y/n)?  ', () => {
          let gemInstall = setup.getSystemCommand(setup.getInstallationCommand(gemUpdates.optional, 'gem install', ':'));
          return setup.executeSystemCommand(gemInstall, formatOutput);
        });
      }
    })
    .then(() => {
      console.log('all gem packages are up to date.');
    })
    .catch(error => {
      console.log('failed to install required gems with the following message:\n' + error);
      process.exit(0);
    });
};

module.exports = {
  installGems: installGems
};