$(document).ready(function(){
  
  	if ($('#isPublic').val()){
  		// no versions actions in public mode
  		// beware of https://github.com/owncloud/core/issues/4545
  		// as enabling this might hang Chrome
  		return;
  	}
  
  	if (typeof FileActions !== 'undefined') {
  		// Add versions button to 'files/index.php'
  		FileActions.register(
  			'file'
  			, t('files_versions', 'Versions')
  			, OC.PERMISSION_UPDATE
  			, function() {
  				// Specify icon for hitory button
  				return OC.imagePath('core','actions/history');
  			}
  			,function(filename){
  				// Action to perform when clicked
  				if (scanFiles.scanning){return;}//workaround to prevent additional http request block scanning feedback
  
  				var file = $('#dir').val()+'/'+filename;
  				// Check if drop down is already visible for a different file
  				if (($('#dropdown').length > 0) && $('#dropdown').hasClass('drop-versions') ) {
  					if (file != $('#dropdown').data('file')) {
  						$('#dropdown').hide('blind', function() {
  							$('#dropdown').remove();
  							$('tr').removeClass('mouseOver');
  							createVersionsDropdown(filename, file);
  						});
  					}
  				} else {
  					createVersionsDropdown(filename, file);
  				}
  			}
  		);
  	}
  });
  
  function goToVersionPage(url){
  	window.location.assign(url);
  }
  
  function createVersionsDropdown(filename, files) {
  
  	var historyUrl = OC.linkTo('files_versions', 'history.php') + '?path='+encodeURIComponent( $( '#dir' ).val() ).replace( /%2F/g, '/' )+'/'+encodeURIComponent( filename );
  
  	$.ajax({
  		type: 'GET',
  		url: OC.filePath('files_versions', 'ajax', 'getVersions.php'),
  		dataType: 'json',
  		data: { source: files },
  		async: false,
  		success: function( versions ) {
  
  			// first decide which kind of dialog we need
  			if (versions) {
  
  				var html = '<div id="dropdown" class="drop drop-versions" data-file="'+escapeHTML(files)+'">';
  				html += '<div id="private">';
  				html += '<select data-placeholder="Saved versions" id="found_versions" class="chzen-select" style="width:16em;">';
  				html += '<option value=""></option>';
  				html += '</select>';
  				html += '</div>';
  				html += '<input type="button" value="All versions..." name="makelink" id="makelink" />';
  				html += '<input id="link" style="display:none; width:90%;" />';
  
  			} else {
  				var html = '<div id="dropdown" class="drop drop-versions" data-file="'+escapeHTML(files)+'">';
  				html += '<div style="text-align:center;">No other versions available</div></div>';
  			}
  
  			if (filename) {
  				$('tr').filterAttr('data-file',filename).addClass('mouseOver');
  				$(html).appendTo($('tr').filterAttr('data-file',filename).find('td.filename'));
  			} else {
  				$(html).appendTo($('thead .share'));
  			}
  
  			$("#makelink").click(function() {
  				goToVersionPage(historyUrl);
  			});
  
  			// if versions are available populate the dialog
  			if (versions) {
  				$.each( versions, function(index, row ) {
  					addVersion( row );
  				});
  			}
  
  			$('#found_versions').change(function(){
  				var revision=parseInt($(this).val());
  				revertFile(files,revision);
  			});
  		}
  	});
  
  	function revertFile(file, revision) {
  
  		$.ajax({
  			type: 'GET',
  			url: OC.linkTo('files_versions', 'ajax/rollbackVersion.php'),
  			dataType: 'json',
  			data: {file: file, revision: revision},
  			async: false,
  			success: function(response) {
  				if (response.status=='error') {
  					OC.dialogs.alert('Failed to revert '+file+' to revision '+formatDate(revision*1000)+'.','Failed to revert');
  				} else {
  					$('#dropdown').hide('blind', function() {
  						$('#dropdown').remove();
  						$('tr').removeClass('mouseOver');
  						// TODO also update the modified time in the web ui
  					});
  				}
  			}
  		});
  
  	}
  
  	function addVersion( revision ) {
  		name=formatDate(revision.version*1000);
  		var version=$('<option/>');
  		version.attr('value',revision.version);
  		version.text(name);
  
  // 		} else {
  // 			var checked = ((permissions > 0) ? 'checked="checked"' : 'style="display:none;"');
  // 			var style = ((permissions == 0) ? 'style="display:none;"' : '');
  // 			var user = '<li data-uid_shared_with="'+uid_shared_with+'">';
  // 			user += '<a href="" class="unshare" style="display:none;"><img class="svg" alt="Unshare" src="'+OC.imagePath('core','actions/delete')+'"/></a>';
  // 			user += uid_shared_with;
  // 			user += '<input type="checkbox" name="permissions" id="'+uid_shared_with+'" class="permissions" '+checked+' />';
  // 			user += '<label for="'+uid_shared_with+'" '+style+'>can edit</label>';
  // 			user += '</li>';
  // 		}
  
  		version.appendTo('#found_versions');
  	}
  
  	$('tr').filterAttr('data-file',filename).addClass('mouseOver');
  	$('#dropdown').show('blind');
  
  
  }
  
  $(this).click(
  	function(event) {
  	if ($('#dropdown').has(event.target).length === 0 && $('#dropdown').hasClass('drop-versions')) {
  		$('#dropdown').hide('blind', function() {
  			$('#dropdown').remove();
  			$('tr').removeClass('mouseOver');
  		});
  	}
  
  
  	}
  );