Gruntfile.js

module.exports = function(grunt) {
  /*Grab the configuration file (which is gitignored) to set the appropriate environmental variables and API Keys
      Please Make Sure:
                    1)env.config.js is a javascript file or module.exports won't work
                    2)env.config.js is gitignored or our API keys will be publicly visible
  */
  var localConfig;
  try {
    localConfig = require('./env.config');
  } catch(e) {
    localConfig = {};
  }

  grunt.initConfig({
    karma: {
      options: {
        // point all tasks to karma config file
        configFile: 'karma.conf.js'
      },
      unit: {
        singleRun: true
      },
      continuous: {
        // keep karma running in the background
        background: true
      },
      travis: {
        configFile: 'karma.conf.js',
        singleRun: true,
        browsers: ['PhantomJS']
      }
    },
    nodemon: {
      dev: {
        script: 'server/server.js'
      }
    },
    shell: {
      mongo: {
          command: 'sudo mongod',
          options: {
              async: true
          }
      }
    },
    open : {
        dev : {
          path: 'http://localhost:3000/',
          app: 'Google Chrome'
        }
    },
    watch: {
      karma: {
        // run the continuous karma task when on file change
        files: ['client/app/app.js','client/app/home/homeCtrl.js', 'Spec/unit/auth.js'],
        tasks: ['karma:continuous:run'] 
      }
    },
    env : {
      dev : {
        options: {},
        NODE_ENV : 'development',
        DEST     : 'builds/dev'
      },
      build : {
        NODE_ENV : 'production',
        DEST     : 'builds/production'
      },
      all: localConfig
    }
  });
 
  // load the Grunt task
  grunt.loadNpmTasks('grunt-shell-spawn');
  grunt.loadNpmTasks('grunt-express-server');
  grunt.loadNpmTasks('grunt-env');
  grunt.loadNpmTasks('grunt-karma');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-nodemon');
  grunt.loadNpmTasks('grunt-open');
  //Server development
  grunt.registerTask('server-dev', function (target) {
      // Running nodejs in a different process and displaying output on the main console
      var nodemon = grunt.util.spawn({
           cmd: 'grunt',
           grunt: true,
           args: 'nodemon'
      });
      nodemon.stdout.pipe(process.stdout);
      nodemon.stderr.pipe(process.stderr);

    });

  //will run our unit tests once and report the results in Karma
  grunt.registerTask('unit-test', ['karma:unit']);

  //Use development mode while working on our codebae, it will watch for any file changes and run karma continuously
  grunt.registerTask('devmode', ['env:all','env:dev','printEnv','shell:mongo','server-dev','open:dev', 'karma:continuous:start', 'watch:karma']);

  //Test is what Travis uses to run our test suite, it is initiated in the 'scripts' section in package.json
  grunt.registerTask('test', ['karma:travis']);

 //Task to check what current env variables are (useful for debugging)
  grunt.registerTask('printEnv', 'prints a message with an env var', function() { 
    console.log('Gruntfile.js Environmental variables being set: ' + process.env.DEST, process.env);
  });

  /*These tasks will eventually be what we run for development and production, at the moment they are 
    just placeholders that print out the Node environmental variables 
  */
  grunt.registerTask('prod', ['env:all', 'env:build', 'printEnv']);
  grunt.registerTask('dev',  ['env:all', 'env:dev', 'printEnv']);
};