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/>.

namespace mod_quiz\task;

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

use context_course;

use core_user;

use mod_quiz\quiz_attempt;

use moodle_recordset;

use question_display_options;

use mod_quiz\question\display_options;

require_once($CFG->dirroot . '/mod/quiz/locallib.php');

/**

 * Cron Quiz Notify Attempts Graded Task.

 *

 * @package    mod_quiz

 * @copyright  2021 The Open University

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

 *

 */

class quiz_notify_attempt_manual_grading_completed extends \core\task\scheduled_task {

    /**

     * @var int|null For using in unit testing only. Override the time we consider as now.

     */

    protected $forcedtime = null;

    /**

     * Get name of schedule task.

     *

     * @return string

     */

    public function get_name(): string {

        return get_string('notifyattemptsgradedtask', 'mod_quiz');

    }

    /**

     * To let this class be unit tested, we wrap all accesses to the current time in this method.

     *

     * @return int The current time.

     */

    protected function get_time(): int {

        if (PHPUNIT_TEST && $this->forcedtime !== null) {

            return $this->forcedtime;

        }

        return time();

    }

    /**

     * For testing only, pretend the current time is different.

     *

     * @param int $time The time to set as the current time.

     */

    public function set_time_for_testing(int $time): void {

        if (!PHPUNIT_TEST) {

            throw new \coding_exception('set_time_for_testing should only be used in unit tests.');

        }

        $this->forcedtime = $time;

    }

    /**

     * Execute sending notification for manual graded attempts.

     */

    public function execute() {

        global $DB;

        mtrace('Looking for quiz attempts which may need a graded notification sent...');

        $attempts = $this->get_list_of_attempts();

        $course = null;

        $quiz = null;

        $cm = null;

        foreach ($attempts as $attempt) {

            mtrace('Checking attempt ' . $attempt->id . ' at quiz ' . $attempt->quiz . '.');

            if (!$quiz || $attempt->quiz != $quiz->id) {

                $quiz = $DB->get_record('quiz', ['id' => $attempt->quiz], '*', MUST_EXIST);

                $cm = get_coursemodule_from_instance('quiz', $attempt->quiz);

            }

            if (!$course || $course->id != $quiz->course) {

                $course = get_course($quiz->course);

                $coursecontext = context_course::instance($quiz->course);

            }

            $quiz = quiz_update_effective_access($quiz, $attempt->userid);

            $attemptobj = new quiz_attempt($attempt, $quiz, $cm, $course, false);

            $options = display_options::make_from_quiz($quiz, quiz_attempt_state($quiz, $attempt));

            if ($options->manualcomment == question_display_options::HIDDEN) {

                // User cannot currently see the feedback, so don't message them.

                // However, this may change in future, so leave them on the list.

                continue;

            }

            if (!has_capability('mod/quiz:emailnotifyattemptgraded', $coursecontext, $attempt->userid, false)) {

                // User not eligible to get a notification. Mark them done while doing nothing.

                $DB->set_field('quiz_attempts', 'gradednotificationsenttime', $attempt->timefinish, ['id' => $attempt->id]);

                continue;

            }

            // OK, send notification.

            mtrace('Sending email to user ' . $attempt->userid . '...');

            $ok = quiz_send_notify_manual_graded_message($attemptobj, core_user::get_user($attempt->userid));

            if ($ok) {

                mtrace('Send email successfully!');

                $attempt->gradednotificationsenttime = $this->get_time();

                $DB->set_field('quiz_attempts', 'gradednotificationsenttime', $attempt->gradednotificationsenttime,

                        ['id' => $attempt->id]);

                $attemptobj->fire_attempt_manual_grading_completed_event();

            }

        }

        $attempts->close();

    }

    /**

     * Get a number of records as an array of quiz_attempts using a SQL statement.

     *

     * @return moodle_recordset Of quiz_attempts that need to be processed.

     */

    public function get_list_of_attempts(): moodle_recordset {

        global $DB;

        $delaytime = $this->get_time() - get_config('quiz', 'notifyattemptgradeddelay');

        $sql = "SELECT qa.*

                  FROM {quiz_attempts} qa

                  JOIN {quiz} quiz ON quiz.id = qa.quiz

                 WHERE qa.state = 'finished'

                       AND qa.gradednotificationsenttime IS NULL

                       AND qa.sumgrades IS NOT NULL

                       AND qa.timemodified < :delaytime

              ORDER BY quiz.course, qa.quiz";

        return $DB->get_recordset_sql($sql, ['delaytime' => $delaytime]);

    }

}