// (C) Copyright 2015 Martin Dougiamas
//
// Licensed 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.

import { Injectable } from '@angular/core';
import { CoreCronHandler } from '@providers/cron';
import { CoreSitesProvider } from '@providers/sites';
import { CoreCourseProvider } from '@core/course/providers/course';

/**
 * Log cron handler. It will update last access of the user while app is open.
 */
@Injectable()
export class CoreCourseLogCronHandler implements CoreCronHandler {
    name = 'CoreCourseLogCronHandler';

    constructor(private courseProvider: CoreCourseProvider, private sitesProvider: CoreSitesProvider) {}

    /**
     * Execute the process.
     * Receives the ID of the site affected, undefined for the current site.
     *
     * @param  {string} [siteId] ID of the site affected, undefined for the current site.
     * @return {Promise<any>}         Promise resolved when done, rejected if failure.
     */
    execute(siteId?: string): Promise<any> {
        return this.sitesProvider.getSite(siteId).then((site) => {
           return this.courseProvider.logView(site.getSiteHomeId(), undefined, site.getId());
        });
    }

    /**
     * Check whether it's a synchronization process or not.
     *
     * @return {boolean} Whether it's a synchronization process or not.
     */
    isSync(): boolean {
        return false;
    }

    /**
     * Get the time between consecutive executions.
     *
     * @return {number} Time between consecutive executions (in ms).
     */
    getInterval(): number {
        return 240000; // 4 minutes. By default platform will see the user as online if lastaccess is less than 5 minutes.
    }
}
