/*
 * grunt-contrib-watch
 * http://gruntjs.com/
 *
 * Copyright (c) 2013 "Cowboy" Ben Alman, contributors
 * Licensed under the MIT license.
 */

module.exports = function(grunt) {
  'use strict';
  grunt.registerMultiTask('echo', 'A task that echos a message.', function() {
    var msg = this.data.message || 'I do absolutely nothing.';
    var wait = this.data.wait || grunt.option('wait') || 0;
    var fail = this.data.fail || false;
    var done = this.async();

    // After a given time print a message or fail
    setTimeout(function() {
      if (fail) {
        grunt.fail.fatal(msg, fail);
      } else {
        grunt.log.writeln(msg);
        done();
      }
    }, wait);

    // Keep the process alive
    setInterval(function() {}, 250);
  });
};