Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * @package     report_overviewstats

 * @copyright   2013 David Mudrak <david@moodle.com>

 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/accesslib.php');

/**

 * Reports various users related charts and figures

 */

class report_overviewstats_chart_logins extends report_overviewstats_chart {

    /**

     * @return array

     */

    public function get_content() {

        $this->prepare_data();

        $title = get_string('chart-logins', 'report_overviewstats');

        $titleperday = get_string('chart-logins-perday', 'report_overviewstats');

        return array($title => array(

            $titleperday => html_writer::tag('div', '', array(

                'id' => 'chart_logins_perday',

                'class' => 'chartplaceholder',

                'style' => 'min-height: 300px;',

            )),

        ));

    }

    /**

     * @see parent

     */

    public function inject_page_requirements(moodle_page $page) {

        $this->prepare_data();

        $page->requires->yui_module(

            'moodle-report_overviewstats-charts',

            'M.report_overviewstats.charts.logins.init',

            array($this->data)

        );

    }

    /**

     * Prepares data to report

     */

    protected function prepare_data() {

        global $DB, $CFG;

        if (!is_null($this->data)) {

            return;

        }

        $now = strtotime('today midnight');

        $lastmonth = array();

        for ($i = 30; $i >= 0; $i--) {

            $lastmonth[$now - $i * DAYSECS] = array();

        }

        if ($CFG->branch >= 27) {

            $logmanger = get_log_manager();

            if ($CFG->branch >= 29) {

                $readers = $logmanger->get_readers('\core\log\sql_reader');

            } else {

                $readers = $logmanger->get_readers('\core\log\sql_select_reader');

            }

            $reader = reset($readers);

            $params = array('component' => 'core',

                            'eventname' => '\core\event\user_loggedin',

                            'guestid' => $CFG->siteguest,

                            'timestart' => $now - 30 * DAYSECS);

            $select = "component = :component AND eventname = :eventname AND userid <> :guestid AND timecreated >= :timestart";

            $rs = $reader->get_events_select($select, $params, 'timecreated DESC', 0, 0);

            foreach ($rs as $record) {

                foreach (array_reverse($lastmonth, true) as $timestamp => $loggedin) {

                    $date = usergetdate($timestamp);

                    if ($record->timecreated >= $timestamp) {

                        $lastmonth[$timestamp][$record->userid] = true;

                        break;

                    }

                }

            }

        } else {

            $sql = "SELECT time, userid

                      FROM {log}

                     WHERE time >= :timestart

                       AND userid <> :guestid

                       AND action = 'login'";

            $params = array('timestart' => $now - 30 * DAYSECS, 'guestid' => $CFG->siteguest);

            $rs = $DB->get_recordset_sql($sql, $params);

            foreach ($rs as $record) {

                foreach (array_reverse($lastmonth, true) as $timestamp => $loggedin) {

                    $date = usergetdate($timestamp);

                    if ($record->time >= $timestamp) {

                        $lastmonth[$timestamp][$record->userid] = true;

                        break;

                    }

                }

            }

            $rs->close();

        }

        $this->data = array(

            'perday' => array(),

        );

        $format = get_string('strftimedateshort', 'core_langconfig');

        foreach ($lastmonth as $timestamp => $loggedin) {

            $date = userdate($timestamp, $format);

            $this->data['perday'][] = array('date' => $date, 'loggedin' => count($loggedin));

        }

        // Ignore today's stats (not complete yet).

        array_pop($this->data['perday']);

    }

}