api.js

(function($) {

  var Poller = function () {
    this.defaults = {
      type: 'veggies',
      limit: 10
    };

    this.items = {
      veggies: [
        'Adzuki Beans',
        'Asparagus',
        'Black-eyed Peas',
        'Brussels Sprouts',
        'Carrots',
        'Collard Greens',
        'Parsnips',
        'Rhubarb',
        'Yams',
        'Watercress',
		'Apricots',
        'Blackcurrants',
        'Cherimoya',
        'Dates',
        'Elderberry',
        'Guava',
        'Kumquat',
        'Miracle Fruit',
        'Purple Mangosteen',
        'Satsuma'
      ],
      fruits: [
        'Apricots',
        'Blackcurrants',
        'Cherimoya',
        'Dates',
        'Elderberry',
        'Guava',
        'Kumquat',
        'Miracle Fruit',
        'Purple Mangosteen',
        'Satsuma'
      ]
    };
  };
  
  Poller.prototype._getRandomNumber = function (min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
  };

  Poller.prototype._getData = function (type) {
    var item, i, len;
    var list = this.items[type] || [];
    var results = [];

    for (i = 0, len = list.length; i < len; i++) {
      item = list[i];

      results.push({
        name: item,
        count: this._getRandomNumber(0, 200000)
      });
    }
    return results;
  };

  Poller.prototype._processData = function (data, limit) {
    return data.slice(0, limit);
  };

  Poller.prototype.poll = function (options, cb) {
    var self = this;
    var config = $.extend({}, this.defaults, options);
    var dfd = $.Deferred();

    setTimeout(function () {
      var payload = self._processData(self._getData(config.type), config.limit);

      cb && cb(payload);      
      dfd.resolve(payload);
    }, this._getRandomNumber(400, 2000));

    return dfd;
  };

  if (window.spredfast == null) {
    window.spredfast = {
      Poller: Poller
    };
  }
}(jQuery));