/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

const express = require('express');

// Fire me up!

module.exports = {
    implements: 'routes/downloads',
    inject: ['services/agents', 'services/activities']
};

/**
 * @param _
 * @param express
 * @param {DownloadsService} downloadsService
 * @param {ActivitiesService} activitiesService
 * @returns {Promise}
 */
module.exports.factory = function(downloadsService, activitiesService) {
    return new Promise((resolveFactory) => {
        const router = new express.Router();

        /* Get grid topology. */
        router.get('/agent', (req, res) => {
            activitiesService.merge(req.user._id, {
                group: 'agent',
                action: '/agent/download'
            });

            downloadsService.prepareArchive(req.origin(), req.user.token)
                .then(({fileName, buffer}) => {
                    // Set the archive name.
                    res.attachment(fileName);

                    res.send(buffer);
                })
                .catch(res.api.error);
        });

        resolveFactory(router);
    });
};