beelzebub/examples/api/gulp.js

One Hell of a Task Master!

'use strict';
// !-- FOR TESTS
let wrapper = function (options) {
// --!

// =====================================================
// <EXAMPLE>
  let Beelzebub = require('../../');
  let bz = Beelzebub(options || { verbose: true });

  const gulp  = require('gulp');
  const del   = require('del');
  const shell = require('shelljs');

  class MyTasks extends Beelzebub.Tasks {
    constructor (config) {
      super(config);
      this.$setName('MyTasks');

      this._src = './static-files/src';
      this._dest = './static-files/dest';
    }

    CopyFile () {
      this.logger.log('MyTasks - Coping Files');
      return gulp.src(this._src + '/*', {base: this._src})
                .pipe(gulp.dest(this._dest));
    }

    NumberOfDestFiles () {
      return new Promise((resolve, reject) => {
        shell.exec(
                    `cd ${this._dest}; ls -d -- * | wc -l`,
          {
            silent: true,
            async:  true
          },
                    (code, stdout, stderr) => {
                      if (stderr) {
                        return reject(stderr);
                      }

                      let count = parseInt(stdout);
                      this.logger.log(`MyTasks - Number of Dest Files: ${count}`);
                      resolve();
                    }
                );
      });
    }

    DeleteFiles () {
      this.logger.log('MyTasks - Delete Files');
      return del(this._dest + '/*.txt');
    }
  }

  bz.add(MyTasks);

  let p = bz.run(
    'MyTasks.NumberOfDestFiles',
    'MyTasks.CopyFile',
    'MyTasks.NumberOfDestFiles',
    'MyTasks.DeleteFiles',
    'MyTasks.NumberOfDestFiles'
  );
/* Output:
MyTasks - Number of Dest Files: 1
MyTasks - Coping Files
MyTasks - Number of Dest Files: 3
MyTasks - Delete Files
MyTasks - Number of Dest Files: 1
*/
// </EXAMPLE>
// =====================================================

// !-- FOR TESTS
  return p.then(() => { return bz; });
};
module.exports = wrapper;
// if not running in test, then run wrapper
if (typeof global.it !== 'function') wrapper();
// --!