Request.Twitter = new Class({

  Extends: Request.JSONP,

  options: {
    linkify: true,
    url: 'http://twitter.com/statuses/user_timeline/{term}.json',
    data: {
      count: 5
    }
  },
  
  initialize: function(term, options){
    this.parent(options);
    this.options.url = this.options.url.substitute({term: term});
  },
  
  success: function(data, script){
    if (this.options.linkify) data.each(function(tweet){
      tweet.text = this.linkify(tweet.text);
    }, this);
    
    // keep subsequent calls newer
    if (data[0]) this.options.data.since_id = data[0].id;
    
    this.parent(data, script);
  },
  
  linkify: function(text){
    // modified from TwitterGitter by David Walsh (davidwalsh.name)
    // courtesy of Jeremy Parrish (rrish.org)
    return text.replace(/(https?:\/\/[\w\-:;?&=+.%#\/]+)/gi, '<a href="$1">$1</a>')
               .replace(/(^|\W)@(\w+)/g, '$1<a href="http://twitter.com/$2">@$2</a>')
               .replace(/(^|\W)#(\w+)/g, '$1#<a href="http://search.twitter.com/search?q=%23$2">$2</a>');
  }
  
});