@enplug/scripts/bin/functions/checkForExistingRelease.js

Enplug scripts

const inquirer = require('inquirer');
const chalk = require('chalk');

function checkForExistingRelease(s3Client, bucket, prefix) {
  return new Promise(function (resolve, reject) {
    var query = s3Client.listObjects({
      s3Params: {
        Bucket: bucket,
        MaxKeys: 2,
        Prefix: prefix
      }
    });
    query.once('error', function (err) {
      console.error('Cannot verify whether this version already exists on S3.');
      console.error(err);
      return promptForContinue(resolve, reject, 'Release anyway (files might be overwritten)?');
    });
    query.on('data', function () {
      if (!query.objectsFound) {
        resolve();
        return;
      }

      query.abort();
      return promptForContinue(resolve, reject, `This version already exists in the ${chalk.default.yellow(bucket)} bucket. Overwrite?`);
    });
  });
}

function promptForContinue(resolve, reject, message) {
  return inquirer.prompt({
    message: message,
    name: 'confirm',
    type: 'confirm',
    default: false
  }).then(function (value) {
    if (value.confirm) {
      console.log(chalk.default.magentaBright('Files without changes will not be uploaded.'));
      resolve();
    }
    else { reject(); }
  });
}

module.exports = checkForExistingRelease;