module.exports = function(config,grunt) {
  'use strict';

  grunt.registerTask('phantomjs', 'Copy phantomjs binary to vendor/', function() {
    var dest = './tools/phantomjs/phantomjs';
    var confDir = './node_modules/phantomjs-prebuilt/lib/';

    if (process.platform === "win32") {
      dest += ".exe";
    }

    var src = config.phjs;
    if (!src) {
      var m = grunt.file.read(confDir+"location.js");
      src = /= \"([^\"]*)\"/.exec(m)[1];
      if (!grunt.file.isPathAbsolute(src)) {
        src = confDir+src;
      }
    }

    try {
      grunt.config('copy.phantom_bin', {
        src: src,
        dest: dest,
        options: { mode: true},
      });
      grunt.task.run('copy:phantom_bin');
    } catch (err) {
      grunt.verbose.writeln(err);
      grunt.fail.warn('No working Phantomjs binary available')
    }
  });
};