/*
   * Copyright (c) 2014
   *
   * This file is licensed under the Affero General Public License version 3
   * or later.
   *
   * See the COPYING-README file.
   *
   */
  (function() {
  	var DELETED_REGEXP = new RegExp(/^(.+)\.d[0-9]+$/);
  
  	/**
  	 * Convert a file name in the format filename.d12345 to the real file name.
  	 * This will use basename.
  	 * The name will not be changed if it has no ".d12345" suffix.
  	 * @param name file name
  	 * @return converted file name
  	 */
  	function getDeletedFileName(name) {
  		name = OC.basename(name);
  		var match = DELETED_REGEXP.exec(name);
  		if (match && match.length > 1) {
  			name = match[1];
  		}
  		return name;

  	}

  
  	var FileList = function($el, options) {
  		this.initialize($el, options);
  	};
  	FileList.prototype = _.extend({}, OCA.Files.FileList.prototype, {
  		id: 'trashbin',
  		appName: t('files_trashbin', 'Deleted files'),
  
  		initialize: function() {
  			var result = OCA.Files.FileList.prototype.initialize.apply(this, arguments);
  			this.$el.find('.undelete').click('click', _.bind(this._onClickRestoreSelected, this));
  
  			this.setSort('mtime', 'desc');
  			/**
  			 * Override crumb making to add "Deleted Files" entry
  			 * and convert files with ".d" extensions to a more
  			 * user friendly name.
  			 */
  			this.breadcrumb._makeCrumbs = function() {
  				var parts = OCA.Files.BreadCrumb.prototype._makeCrumbs.apply(this, arguments);
  				for (var i = 1; i < parts.length; i++) {
  					parts[i].name = getDeletedFileName(parts[i].name);
  				}
  				return parts;
  			};
  
  			return result;
  		},
  
  		/**
  		 * Override to only return read permissions
  		 */
  		getDirectoryPermissions: function() {
  			return OC.PERMISSION_READ | OC.PERMISSION_DELETE;
  		},
  
  		_setCurrentDir: function(targetDir) {
  			OCA.Files.FileList.prototype._setCurrentDir.apply(this, arguments);
  
  			var baseDir = OC.basename(targetDir);
  			if (baseDir !== '') {
  				this.setPageTitle(getDeletedFileName(baseDir));
  			}
  		},
  
  		_createRow: function() {
  			// FIXME: MEGAHACK until we find a better solution
  			var tr = OCA.Files.FileList.prototype._createRow.apply(this, arguments);
  			tr.find('td.filesize').remove();
  			return tr;
  		},
  
  		_renderRow: function(fileData, options) {
  			options = options || {};
  			var dir = this.getCurrentDirectory();
  			var dirListing = dir !== '' && dir !== '/';
  			// show deleted time as mtime
  			if (fileData.mtime) {
  				fileData.mtime = parseInt(fileData.mtime, 10);
  			}
  			if (!dirListing) {
  				fileData.displayName = fileData.name;
  				fileData.name = fileData.name + '.d' + Math.floor(fileData.mtime / 1000);
  			}
  			return OCA.Files.FileList.prototype._renderRow.call(this, fileData, options);
  		},
  
  		getAjaxUrl: function(action, params) {
  			var q = '';
  			if (params) {
  				q = '?' + OC.buildQueryString(params);
  			}
  			return OC.filePath('files_trashbin', 'ajax', action + '.php') + q;
  		},
  
  		setupUploadEvents: function() {
  			// override and do nothing
  		},
  
  		linkTo: function(dir){
  			return OC.linkTo('files', 'index.php')+"?view=trashbin&dir="+ encodeURIComponent(dir).replace(/%2F/g, '/');
  		},
  
  		updateEmptyContent: function(){
  			var exists = this.$fileList.find('tr:first').exists();
  			this.$el.find('#emptycontent').toggleClass('hidden', exists);
  			this.$el.find('#filestable th').toggleClass('hidden', !exists);

  		},

  
  		_removeCallback: function(result) {
  			if (result.status !== 'success') {
  				OC.dialogs.alert(result.data.message, t('files_trashbin', 'Error'));
  			}
  
  			var files = result.data.success;
  			var $el;
  			for (var i = 0; i < files.length; i++) {
  				$el = this.remove(OC.basename(files[i].filename), {updateSummary: false});
  				this.fileSummary.remove({type: $el.attr('data-type'), size: $el.attr('data-size')});
  			}
  			this.fileSummary.update();
  			this.updateEmptyContent();
  			this.enableActions();
  		},
  
  		_onClickRestoreSelected: function(event) {
  			event.preventDefault();
  			var self = this;
  			var allFiles = this.$el.find('.select-all').is(':checked');
  			var files = [];
  			var params = {};
  			this.disableActions();
  			if (allFiles) {
  				this.showMask();
  				params = {
  					allfiles: true,
  					dir: this.getCurrentDirectory()
  				};
  			}
  			else {
  				files = _.pluck(this.getSelectedFiles(), 'name');
  				for (var i = 0; i < files.length; i++) {
  					var deleteAction = this.findFileEl(files[i]).children("td.date").children(".action.delete");
  					deleteAction.removeClass('delete-icon').addClass('progress-icon');
  				}
  				params = {
  					files: JSON.stringify(files),
  					dir: this.getCurrentDirectory()
  				};
  			}
  
  			$.post(OC.filePath('files_trashbin', 'ajax', 'undelete.php'),
  				params,
  				function(result) {
  					if (allFiles) {
  						if (result.status !== 'success') {
  							OC.dialogs.alert(result.data.message, t('files_trashbin', 'Error'));
  						}
  						self.hideMask();
  						// simply remove all files
  						self.setFiles([]);
  						self.enableActions();
  					}
  					else {
  						self._removeCallback(result);
  					}
  				}
  			);
  		},
  
  		_onClickDeleteSelected: function(event) {
  			event.preventDefault();
  			var self = this;
  			var allFiles = this.$el.find('.select-all').is(':checked');
  			var files = [];
  			var params = {};
  			if (allFiles) {
  				params = {
  					allfiles: true,
  					dir: this.getCurrentDirectory()
  				};
  			}
  			else {
  				files = _.pluck(this.getSelectedFiles(), 'name');
  				params = {
  					files: JSON.stringify(files),
  					dir: this.getCurrentDirectory()
  				};
  			}
  
  			this.disableActions();
  			if (allFiles) {
  				this.showMask();
  			}
  			else {
  				for (var i = 0; i < files.length; i++) {
  					var deleteAction = this.findFileEl(files[i]).children("td.date").children(".action.delete");
  					deleteAction.removeClass('delete-icon').addClass('progress-icon');
  				}
  			}
  
  			$.post(OC.filePath('files_trashbin', 'ajax', 'delete.php'),
  					params,
  					function(result) {
  						if (allFiles) {
  							if (result.status !== 'success') {
  								OC.dialogs.alert(result.data.message, t('files_trashbin', 'Error'));
  							}
  							self.hideMask();
  							// simply remove all files
  							self.setFiles([]);
  							self.enableActions();
  						}
  						else {
  							self._removeCallback(result);
  						}
  					}
  			);

  		},

  
  		_onClickFile: function(event) {
  			var mime = $(this).parent().parent().data('mime');
  			if (mime !== 'httpd/unix-directory') {
  				event.preventDefault();
  			}
  			return OCA.Files.FileList.prototype._onClickFile.apply(this, arguments);
  		},
  
  		generatePreviewUrl: function(urlSpec) {
  			return OC.generateUrl('/apps/files_trashbin/ajax/preview.php?') + $.param(urlSpec);
  		},
  
  		getDownloadUrl: function() {
  			// no downloads
  			return '#';
  		},
  
  		enableActions: function() {
  			this.$el.find('.action').css('display', 'inline');
  			this.$el.find(':input:checkbox').css('display', 'inline');
  		},
  
  		disableActions: function() {
  			this.$el.find('.action').css('display', 'none');
  			this.$el.find(':input:checkbox').css('display', 'none');
  		},
  
  		updateStorageStatistics: function() {
  			// no op because the trashbin doesn't have
  			// storage info like free space / used space

  		}

  	});

  
  	OCA.Trashbin.FileList = FileList;
  })();