/*
   * Copyright (c) 2014
   *
   * This file is licensed under the Affero General Public License version 3
   * or later.
   *
   * See the COPYING-README file.
   *
   */

  (function() {
  	if (!OCA.Sharing) {
  		OCA.Sharing = {};
  	}
  	OCA.Sharing.Util = {
  		initialize: function(fileActions) {
  			if (OCA.Files.FileList) {
  				var oldCreateRow = OCA.Files.FileList.prototype._createRow;
  				OCA.Files.FileList.prototype._createRow = function(fileData) {
  					var tr = oldCreateRow.apply(this, arguments);
  					var sharePermissions = fileData.permissions;
  					if (fileData.type === 'file') {
  						// files can't be shared with delete permissions
  						sharePermissions = sharePermissions & ~OC.PERMISSION_DELETE;
  					}
  					tr.attr('data-share-permissions', sharePermissions);
  					if (fileData.shareOwner) {
  						tr.attr('data-share-owner', fileData.shareOwner);
  						// user should always be able to rename a mount point
  						if (fileData.isShareMountPoint) {
  							tr.attr('data-permissions', fileData.permissions | OC.PERMISSION_UPDATE);
  						}
  					}
  					if (fileData.recipientsDisplayName) {
  						tr.attr('data-share-recipients', fileData.recipientsDisplayName);
  					}
  					return tr;
  				};

  			}

  			// use delegate to catch the case with multiple file lists
  			$('#content').delegate('#fileList', 'fileActionsReady', function(ev){
  				var fileList = ev.fileList;
  				var $files = ev.$files;
  
  				function updateIcons($files) {
  					if (!$files) {
  						// if none specified, update all
  						$files = fileList.$fileList.find('tr');
  					}
  					_.each($files, function(file) {
  						OCA.Sharing.Util.updateFileActionIcon($(file));
  					});
  				}
  
  				if (!OCA.Sharing.sharesLoaded){
  					OC.Share.loadIcons('file', fileList, function() {
  						// since we don't know which files are affected, just refresh them all
  						updateIcons();

  					});

  					// assume that we got all shares, so switching directories
  					// will not invalidate that list
  					OCA.Sharing.sharesLoaded = true;
  				}
  				else{
  					updateIcons($files);
  				}
  			});
  
  			fileActions.register(
  					'all',
  					'Share',
  					OC.PERMISSION_SHARE,
  					OC.imagePath('core', 'actions/share'),
  					function(filename, context) {
  
  				var $tr = context.$file;
  				var itemType = 'file';
  				if ($tr.data('type') === 'dir') {
  					itemType = 'folder';
  				}
  				var possiblePermissions = $tr.data('share-permissions');
  				if (_.isUndefined(possiblePermissions)) {
  					possiblePermissions = $tr.data('permissions');
  				}
  
  				var appendTo = $tr.find('td.filename');
  				// Check if drop down is already visible for a different file
  				if (OC.Share.droppedDown) {
  					if ($tr.attr('data-id') !== $('#dropdown').attr('data-item-source')) {
  						OC.Share.hideDropDown(function () {
  							$tr.addClass('mouseOver');
  							OC.Share.showDropDown(itemType, $tr.data('id'), appendTo, true, possiblePermissions, filename);
  						});
  					} else {
  						OC.Share.hideDropDown();
  					}

  				} else {

  					$tr.addClass('mouseOver');
  					OC.Share.showDropDown(itemType, $tr.data('id'), appendTo, true, possiblePermissions, filename);
  				}
  				$('#dropdown').on('sharesChanged', function(ev) {
  					// files app current cannot show recipients on load, so we don't update the
  					// icon when changed for consistency
  					if (context.fileList.$el.closest('#app-content-files').length) {
  						return;
  					}
  					var recipients = _.pluck(ev.shares[OC.Share.SHARE_TYPE_USER], 'share_with_displayname');
  					var groupRecipients = _.pluck(ev.shares[OC.Share.SHARE_TYPE_GROUP], 'share_with_displayname');
  					recipients = recipients.concat(groupRecipients);
  					// note: we only update the data attribute because updateIcon()
  					// is called automatically after this event
  					if (recipients.length) {
  						$tr.attr('data-share-recipients', OCA.Sharing.Util.formatRecipients(recipients));
  					}
  					else {
  						$tr.removeAttr('data-share-recipients');
  					}
  				});
  			});
  		},
  
  		/**
  		 * Update the file action share icon for the given file
  		 *
  		 * @param $tr file element of the file to update
  		 */
  		updateFileActionIcon: function($tr) {
  			// if the statuses are loaded already, use them for the icon
  			// (needed when scrolling to the next page)
  			var shareStatus = OC.Share.statuses[$tr.data('id')];
  			if (shareStatus || $tr.attr('data-share-recipients') || $tr.attr('data-share-owner')) {
  				var permissions = $tr.data('permissions');
  				var hasLink = !!(shareStatus && shareStatus.link);
  				OC.Share.markFileAsShared($tr, true, hasLink);
  				if ((permissions & OC.PERMISSION_SHARE) === 0) {
  					// if no share action exists because the admin disabled sharing for this user
  					// we create a share notification action to inform the user about files
  					// shared with him otherwise we just update the existing share action.
  					// TODO: make this work like/with OC.Share.markFileAsShared()
  					$tr.find('.fileactions .action-share-notification').remove();
  					var shareNotification = '<a class="action action-share-notification permanent"' +
  							' data-action="Share-Notification" href="#" original-title="">' +
  							' <img class="svg" src="' + OC.imagePath('core', 'actions/share') + '"></img>';
  					$tr.find('.fileactions').append(function() {
  						var shareBy = escapeHTML($tr.attr('data-share-owner'));
  						var $result = $(shareNotification + '<span> ' + shareBy + '</span></span>');
  						$result.on('click', function() {
  							return false;
  						});
  						return $result;
  					});

  				}

  			}

  		},
  
  		/**
  		 * Formats a recipients array to be displayed.
  		 * The first four recipients will be shown and the
  		 * other ones will be shown as "+x" where "x" is the number of
  		 * remaining recipients.
  		 *
  		 * @param recipients recipients array
  		 * @param count optional total recipients count (in case the array was shortened)
  		 * @return formatted recipients display text
  		 */
  		formatRecipients: function(recipients, count) {
  			var maxRecipients = 4;
  			var text;
  			if (!_.isNumber(count)) {
  				count = recipients.length;
  			}
  			// TODO: use natural sort
  			recipients = _.first(recipients, maxRecipients).sort();
  			text = recipients.join(', ');
  			if (count > maxRecipients) {
  				text += ', +' + (count - maxRecipients);
  			}
  			return text;
  		}
  	};
  })();
  
  $(document).ready(function() {
  	// FIXME: HACK: do not init when running unit tests, need a better way
  	if (!window.TESTING) {
  		if (!_.isUndefined(OC.Share) && !_.isUndefined(OCA.Files)) {
  			OCA.Sharing.Util.initialize(OCA.Files.fileActions);
  		}

  	}
  });