owncloud/core

/*
 * Copyright (c) 2014 Vincent Petry <pvince81@owncloud.com>
 *
 * This file is licensed under the Affero General Public License version 3
 * or later.
 *
 * See the COPYING-README file.
 *
 */
(function() {

    /**
     * @class OCA.External.FileList
     * @augments OCA.Files.FileList
     *
     * @classdesc External storage file list.
     *
     * Displays a list of mount points visible
     * for the current user.
     *
     * @param $el container element with existing markup for the #controls
     * and a table
     * @param [options] map of options, see other parameters
     **/
    var FileList = function($el, options) {
        this.initialize($el, options);
    };

    FileList.prototype = _.extend({}, OCA.Files.FileList.prototype,
        /** @lends OCA.External.FileList.prototype */ {
        appName: 'External storage',

        /**
         * @private
         */
        initialize: function($el, options) {
            OCA.Files.FileList.prototype.initialize.apply(this, arguments);
            if (this.initialized) {
                return;
            }
        },

        /**
         * @param {OCA.External.MountPointInfo} fileData
         */
        _createRow: function(fileData) {
            // TODO: hook earlier and render the whole row here
            var $tr = OCA.Files.FileList.prototype._createRow.apply(this, arguments);
            var $scopeColumn = $('<td class="column-scope column-last"><span></span></td>');
            var $backendColumn = $('<td class="column-backend"></td>');
            var scopeText = t('files_external', 'Personal');
            if (fileData.scope === 'system') {
                scopeText = t('files_external', 'System');
            }
            $tr.find('.filesize,.date').remove();
            $scopeColumn.find('span').text(scopeText);
            $backendColumn.text(fileData.backend);
            $tr.find('td.filename').after($scopeColumn).after($backendColumn);
            $tr.find('td.filename input:checkbox').remove();
            return $tr;
        },

        updateEmptyContent: function() {
            var dir = this.getCurrentDirectory();
            if (dir === '/') {
                // root has special permissions
                this.$el.find('#emptycontent').toggleClass('hidden', !this.isEmpty);
                this.$el.find('#filestable thead th').toggleClass('hidden', this.isEmpty);
            }
            else {
                OCA.Files.FileList.prototype.updateEmptyContent.apply(this, arguments);
            }
        },

        getDirectoryPermissions: function() {
            return OC.PERMISSION_READ | OC.PERMISSION_DELETE;
        },

        updateStorageStatistics: function() {
            // no op because it doesn't have
            // storage info like free space / used space
        },

        reload: function() {
            this.showMask();
            if (this._reloadCall) {
                this._reloadCall.abort();
            }

            // there is only root
            this._setCurrentDir('/', false);

            this._reloadCall = $.ajax({
                url: OC.linkToOCS('apps/files_external/api/v1') + 'mounts',
                data: {
                    format: 'json'
                },
                type: 'GET',
                beforeSend: function(xhr) {
                    xhr.setRequestHeader('OCS-APIREQUEST', 'true');
                }
            });
            var callBack = this.reloadCallback.bind(this);
            return this._reloadCall.then(callBack, callBack);
        },

        reloadCallback: function(result) {
            delete this._reloadCall;
            this.hideMask();

            if (result.ocs && result.ocs.data) {
                this.setFiles(this._makeFiles(result.ocs.data));
                return true;
            }
            return false;
        },

        /**
         * Converts the OCS API  response data to a file info
         * list
         * @param OCS API mounts array
         * @return array of file info maps
         */
        _makeFiles: function(data) {
            var files = _.map(data, function(fileData) {
                fileData.icon = OC.imagePath('core', 'filetypes/folder-external');
                fileData.mountType = 'external';
                return fileData;
            });

            files.sort(this._sortComparator);

            return files;
        }
    });

    /**
     * Mount point info attributes.
     *
     * @typedef {Object} OCA.External.MountPointInfo
     *
     * @property {String} name mount point name
     * @property {String} scope mount point scope "personal" or "system"
     * @property {String} backend external storage backend name
     */

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