C:/xampp/htdocs/moodle/lib/completion/completion_criteria_date.php

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<?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/>.

class completion_criteria_date extends completion_criteria {

    public $criteriatype = COMPLETION_CRITERIA_TYPE_DATE;

    public static function fetch($params) {
        $params['criteriatype'] = COMPLETION_CRITERIA_TYPE_DATE;
        return self::fetch_helper('course_completion_criteria', __CLASS__, $params);
    }

    public function config_form_display(&$mform, $data = null)
    {
        $mform->addElement('checkbox', 'criteria_date', get_string('enable'));
        $mform->addElement('date_selector', 'criteria_date_value', get_string('afterspecifieddate', 'completion'));

        // If instance of criteria exists
        if ($this->id) {
            $mform->setDefault('criteria_date', 1);
            $mform->setDefault('criteria_date_value', $this->timeend);
        } else {
            $mform->setDefault('criteria_date_value', time() + 3600 * 24);
        }
    }

    public function update_config(&$data) {

        if (!empty($data->criteria_date)) {
            $this->course = $data->id;
            $this->timeend = $data->criteria_date_value;
            $this->insert();
        }
    }

    public function review($completion, $mark = true)
    {
        // If current time is past timeend
        if ($this->timeend && $this->timeend < time()) {
            if ($mark) {
                $completion->mark_complete();
            }

            return true;
        }

        return false;
    }

    public function get_title() {
        return get_string('date');
    }

    public function get_title_detailed() {
        return userdate($this->timeend, '%d-%h-%y');
    }

    public function get_type_title() {
        return get_string('date');
    }


    public function get_status($completion) {
        return $completion->is_complete() ? get_string('yes') : userdate($this->timeend, '%d-%h-%y');
    }

    public function cron() {
        global $DB;

        // Get all users who match meet this criteria
        $sql = '
            SELECT DISTINCT
                c.id AS course,
                cr.timeend AS timeend,
                cr.id AS criteriaid,
                ra.userid AS userid
            FROM
                {course_completion_criteria} cr
            INNER JOIN
                {course} c
             ON cr.course = c.id
            INNER JOIN
                {context} con
             ON con.instanceid = c.id
            INNER JOIN
                {role_assignments} ra
             ON ra.contextid = con.id
            LEFT JOIN
                {course_completion_crit_compl} cc
             ON cc.criteriaid = cr.id
            AND cc.userid = ra.userid
            WHERE
                cr.criteriatype = '.COMPLETION_CRITERIA_TYPE_DATE.'
            AND con.contextlevel = '.CONTEXT_COURSE.'
            AND c.enablecompletion = 1
            AND cc.id IS NULL
            AND cr.timeend < ?
        ';

        // Loop through completions, and mark as complete
        $rs = $DB->get_recordset_sql($sql, array(time()));
        foreach ($rs as $record) {
            $completion = new completion_criteria_completion((array)$record);
            $completion->mark_complete($record->timeend);
        }
        $rs->close();
    }

    public function get_details($completion) {
        $details = array();
        $details['type'] = get_string('datepassed', 'completion');
        $details['criteria'] = get_string('remainingenroleduntildate', 'completion');
        $details['requirement'] = userdate($this->timeend, '%d %B %Y');
        $details['status'] = '';

        return $details;
    }
}