/*   Copyright (c) 2010, Diaspora Inc.  This file is
*   licensed under the Affero General Public License version 3 or later.  See
*   the COPYRIGHT file.
*/

(function() {
  var InfiniteScroll = function() { };
  InfiniteScroll.prototype.options =
    {
      navSelector  : "#pagination",
      nextSelector : ".paginate",
      itemSelector : ".stream_element",
      pathParse    : function( pathStr, nextPage ){
        var newPath = pathStr.replace("?", "?only_posts=true&");
        var last_time = $('#main_stream .stream_element').last().find('.time').attr('integer');
        return newPath.replace( /max_time=\d+/, 'max_time=' + last_time);
      },
      bufferPx: 500,
      debug: false,
      donetext: Diaspora.widgets.i18n.t("infinite_scroll.no_more"),
      loadingText: "",
      loadingImg: '/images/ajax-loader.gif'
    };

  InfiniteScroll.prototype.reInitialize = function(){
    this.clear();
    this.initialize();
  };

  InfiniteScroll.prototype.initialize = function(){
    if($('#main_stream').length !== 0){
      $('#main_stream').infinitescroll(this.options, function() {
        Diaspora.widgets.publish("stream/scrolled");
      });

    } else if($('#people_stream.contacts').length !== 0){
      $("#people_stream.contacts").infinitescroll({
        navSelector  : ".pagination",
        nextSelector : ".next_page",
        itemSelector : ".stream_element",
        loadingText: "",
        loadingImg: '/images/ajax-loader.gif',
        bufferPx: 400
      }, function(){
        Diaspora.widgets.publish("stream/scrolled");
      });
    }
  };

  InfiniteScroll.prototype.start = function() {
    Diaspora.widgets.subscribe("stream/reloaded", this.reInitialize, this);
    this.initialize();
  };

  InfiniteScroll.prototype.clear = function() {
    $('#main_stream').infinitescroll('destroy');
  };

  Diaspora.widgets.add("infinitescroll", InfiniteScroll);
})();