attempt.php

<?php

require_once '../../config.php';
require_once 'lib.php';
require_once __DIR__ . '/locallib.php';

$id = optional_param('id', 0, PARAM_INT); // Course_module ID
$n = optional_param('n', 0, PARAM_INT); // GeoGebra instance ID
$f = optional_param('f', 1, PARAM_INT); // Finished
$vars = optional_param('appletInformation', '', PARAM_RAW); // Applet variables

if ($id) {
    $cm = get_coursemodule_from_id('geogebra', $id, 0, false, MUST_EXIST);
    $course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);
    $geogebra = $DB->get_record('geogebra', ['id' => $cm->instance], '*', MUST_EXIST);
} elseif ($n) {
    $geogebra = $DB->get_record('geogebra', ['id' => $n], '*', MUST_EXIST);
    $course = $DB->get_record('course', ['id' => $geogebra->course], '*', MUST_EXIST);
    $cm = get_coursemodule_from_instance('geogebra', $geogebra->id, $course->id, false, MUST_EXIST);
} else {
    throw new \moodle_exception('You must specify a course_module ID or an instance ID');
}

$context = context_module::instance($cm->id);

// Activity was sent before the applet was fully loaded.
parse_str($vars, $parsedVars);
if (empty($vars)) {
    throw new \moodle_exception('The applet has not sent correct data');
}

require_login($course, true, $cm);

$attempt = geogebra_get_unfinished_attempt($geogebra->id, $USER->id);

if ((int)$geogebra->autograde === 0) {
    // If geogebra is not autograding, change grade from 0 to undefined or get the one specified by the teacher.
    $grade = '-1';

    if ($attempt) {
        parse_str($attempt->vars, $attemptVars);
        $grade = $attemptVars['grade'];
    }

    $vars = http_build_query([
        'grade' => $grade,
        'duration' => $parsedVars['duration'],
        'attempts' => $parsedVars['attempts'],
        'state' => $parsedVars['state'],
    ], '', '&');
} else {
    $vars = http_build_query([
        'grade' => round($parsedVars['grade'], 2),
        'duration' => $parsedVars['duration'],
        'attempts' => $parsedVars['attempts'],
        'state' => $parsedVars['state'],
    ], '', '&');
}

parse_str($vars, $parsedVars);

if ($attempt) { // Exists an unfishined attempt.
    if (!(geogebra_update_attempt($attempt->id, $vars, GEOGEBRA_UPDATE_STUDENT, $attempt->gradecomment, $f))) {
        throw new \moodle_exception(get_string('errorattempt', 'geogebra'));
    }
} else if (!(geogebra_add_attempt($geogebra->id, $USER->id, $vars, $f))) {
    throw new \moodle_exception(get_string('errorattempt', 'geogebra'));
}

// TODO: Show saved information message
// echo '<div class="mod-geogebra-redirect">' . get_string("redirecttocourse", "geogebra") . '</div>';

redirect(new moodle_url('view.php', ['id' => $id]));

return;