$(function(){

  	var OCActivity={};

  	OCActivity.Filter = {
  		filter: undefined,
  		currentPage: 0,
  		navigation: $('#app-navigation'),

  		setFilter: function (filter) {
  			if (filter === this.filter) {
  				return;
  			}

  			this.navigation.find('a[data-navigation=' + this.filter + ']').removeClass('active');
  			this.currentPage = 0;
  
  			this.filter = filter;
  			OC.Util.History.pushState('filter=' + filter);
  
  			OCActivity.InfinitScrolling.container.animate({ scrollTop: 0 }, 'slow');
  			OCActivity.InfinitScrolling.container.children().remove();
  			$('#no_activities').addClass('hidden');
  			$('#no_more_activities').addClass('hidden');
  			$('#loading_activities').removeClass('hidden');
  			OCActivity.InfinitScrolling.ignoreScroll = false;
  
  			this.navigation.find('a[data-navigation=' + filter + ']').addClass('active');
  
  			OCActivity.InfinitScrolling.prefill();
  		}
  	};

  	OCActivity.InfinitScrolling = {
  		ignoreScroll: false,
  		container: $('#container'),
  		content: $('#app-content'),
  
  		prefill: function () {
  			if (this.content.scrollTop() + this.content.height() > this.container.height() - 100) {
  				OCActivity.Filter.currentPage++;
  
  				$.get(
  					OC.filePath('activity', 'ajax', 'fetch.php'),
  					'filter=' + OCActivity.Filter.filter + '&page=' + OCActivity.Filter.currentPage,
  					function(data) {
  						if (data.length) {
  							OCActivity.InfinitScrolling.appendContent(data);
  
  							// Continue prefill
  							OCActivity.InfinitScrolling.prefill();
  						}
  						else if (OCActivity.Filter.currentPage == 1) {
  							// First page is empty - No activities :(
  							$('#no_activities').removeClass('hidden');
  							$('#loading_activities').addClass('hidden');
  						}
  						else {
  							// Page is empty - No more activities :(
  							$('#no_more_activities').removeClass('hidden');
  							$('#loading_activities').addClass('hidden');
  						}
  					}
  				);

  			}
  		},

  
  		onScroll: function () {
  			if (!OCActivity.InfinitScrolling.ignoreScroll && OCActivity.InfinitScrolling.content.scrollTop() +
  			 OCActivity.InfinitScrolling.content.height() > OCActivity.InfinitScrolling.container.height() - 100) {
  				OCActivity.Filter.currentPage++;
  
  				OCActivity.InfinitScrolling.ignoreScroll = true;
  				$.get(
  					OC.filePath('activity', 'ajax', 'fetch.php'),
  					'filter=' + OCActivity.Filter.filter + '&page=' + OCActivity.Filter.currentPage,
  					function(data) {
  						OCActivity.InfinitScrolling.appendContent(data);
  						OCActivity.InfinitScrolling.ignoreScroll = false;
  
  						if (!data.length) {
  							// Page is empty - No more activities :(
  							$('#no_more_activities').removeClass('hidden');
  							$('#loading_activities').addClass('hidden');
  							OCActivity.InfinitScrolling.ignoreScroll = true;
  						}
  					}
  				);

  			}

  		},
  
  		appendContent: function (content) {
  			var firstNewGroup = $(content).first(),
  				lastGroup = this.container.children().last();

  			// Is the first new container the same as the last one?
  			if (lastGroup && lastGroup.data('date') === firstNewGroup.data('date')) {
  				var appendedBoxes = firstNewGroup.find('.box'),
  					lastBoxContainer = lastGroup.find('.boxcontainer');

  				// Move content into the last box
  				OCActivity.InfinitScrolling.processElements(appendedBoxes);
  				lastBoxContainer.append(appendedBoxes);
  
  				// Remove the first box, so it's not duplicated
  				content = $(content).slice(1);
  			} else {
  				content = $(content);
  			}
  
  			OCActivity.InfinitScrolling.processElements(content);
  			this.container.append(content);
  		},
  
  		processElements: function (parentElement) {
  			$(parentElement).find('.avatar').each(function() {
  				var element = $(this);
  				element.avatar(element.data('user'), 28);
  			});
  
  			$(parentElement).find('.tooltip').tipsy({
  				gravity:	's',
  				fade:		true

  			});
  		}

  	};
  
  	OCActivity.Filter.setFilter(OCActivity.InfinitScrolling.container.attr('data-activity-filter'));
  	OCActivity.InfinitScrolling.content.on('scroll', OCActivity.InfinitScrolling.onScroll);
  
  	OCActivity.Filter.navigation.find('a[data-navigation]').on('click', function (event) {
  		OCActivity.Filter.setFilter($(this).attr('data-navigation'));
  		event.preventDefault();
  	});
  
  	$('#enable_rss').change(function () {
  		if (this.checked) {
  			$('#rssurl').removeClass('hidden');
  		} else {
  			$('#rssurl').addClass('hidden');
  		}
  		$.post(OC.filePath('activity', 'ajax', 'rssfeed.php'), 'enable=' + this.checked, function(data) {
  			$('#rssurl').val(data.data.rsslink);
  		});
  	});
  
  	$('#rssurl').on('click', function () {
  		$('#rssurl').select();
  	});

  });