/**
* Check succession rules for user
*
* This function checks the user's eligibility for the course lessons,
* based on the course rules and the user's completed lessons, as well as
* the dates that each lesson is available on.
* <br/>Eaample:
* <code>
* $course = new EfrontCourse(23);
* $eligibility = $course -> checkRules('jdoe');
* </code>
* In the above example, let's suppose that the course 23 has 3 lessons, with ids 1,2 and 3. Let's suppose that in order to access
* lesson 2, the user must have completed lesson 1, and for accessing lesson 3, the user must have completed both lessons 1 and 2.
* Then, if the user has completed lesson 1, the above example will return:
* <code>array(2 => 1, 3 => 0);</code>
* where if he has completed both 2 and 3 it will return:
* <code>array(2 => 1, 3 => 1);</code>
*
* @param mixed $user A user login or an EfrontUser object
* @return array The eligibility array, holding lessons ids as keys and true/false (or 0/1) as values
* @since 3.5.0
* @access public
*/
public function checkRules($user, $courseLessons = false)
{
if ($courseLessons == false) {
if (!$user instanceof EfrontUser) {
$user = EfrontUserFactory::factory($user);
}
$courseLessons = $user->getUserStatusInCourseLessons($this);
}
$user = EfrontUser::convertArgumentToUserLogin($user);
$roles = EfrontLessonUser::getLessonsRoles();
$courseLessons = EfrontCourse::convertLessonObjectsToArrays($courseLessons);
if (!empty($courseLessons)) {
$allowed = array_combine(array_keys($courseLessons), array_fill(0, sizeof($courseLessons), 1));
//By default, all lessons are accessible
} else {
$allowed = array();
}
if ($this->course['depends_on']) {
try {
$dependsOn = new EfrontCourse($this->course['depends_on']);
if ($dependsOn->course['active'] && !$dependsOn->course['archive']) {
$result = eF_getTableData("users_to_courses", "completed, user_type", "users_LOGIN='******' and courses_ID=" . $dependsOn->course['id']);
if (!$result[0]['completed'] && $roles[$result[0]['user_type']] == 'student') {
foreach ($allowed as $key => $value) {
$allowed[$key] = 0;
}
return $allowed;
}
}
} catch (Exception $e) {
}
}
$completedLessons = array();
foreach ($courseLessons as $key => $value) {
!isset($value['start_date']) or $dates[$key]['from_timestamp'] = $value['start_date'];
!isset($value['end_date']) or $dates[$key]['to_timestamp'] = $value['end_date'];
if (isset($value['start_period']) && isset($value['end_period'])) {
//$dates[$key]['from_timestamp'] = $this -> course['start_date'] + 24 * 60 * 60 * $value['start_period'];
//$dates[$key]['to_timestamp'] = $dates[$key]['from_timestamp'] + 24 * 60 * 60 * $value['end_period'];
$dates[$key]['from_timestamp'] = $value['active_in_lesson'] + 24 * 60 * 60 * $value['start_period'];
$dates[$key]['to_timestamp'] = $dates[$key]['from_timestamp'] + 24 * 60 * 60 * $value['end_period'];
} elseif (isset($value['start_date']) && isset($value['end_date'])) {
$dates[$key]['from_timestamp'] = $value['start_date'];
$dates[$key]['to_timestamp'] = $value['end_date'];
}
if ($roles[$value['user_type']] == 'student') {
$completedLessons[$key] = $value['completed'];
}
}
foreach ($this->rules as $lessonId => $lessonRules) {
if (eF_checkParameter($lessonId, 'id')) {
$evalString = '';
for ($i = 1; $i < sizeof($lessonRules['lesson']); $i++) {
$evalString .= $completedLessons[$lessonRules['lesson'][$i]] . ' ' . ($lessonRules['condition'][$i + 1] == 'and' ? '&' : '|');
}
$evalString = $evalString . ' ' . $completedLessons[$lessonRules['lesson'][$i]];
if (!empty($completedLessons) && isset($completedLessons[$lessonRules['lesson'][$i]])) {
if (trim($evalString) == '') {
$evalString = 'false';
}
eval("\$allowed[{$lessonId}] = {$evalString};");
}
}
}
foreach ($allowed as $id => $allow) {
if (isset($dates[$id]['from_timestamp']) && $dates[$id]['from_timestamp'] > time()) {
$allowed[$id] = 0;
}
if (isset($dates[$id]['to_timestamp']) && $dates[$id]['to_timestamp'] < time()) {
$allowed[$id] = 0;
}
}
return $allowed;
}
}
}
}
}
} catch (Exception $e) {
handleAjaxExceptions($e);
}
$days_after_enrollment = array();
for ($k = 0; $k <= 360; $k++) {
$days_after_enrollment[$k] = $k;
if ($k >= 100) {
$k += 5;
}
}
$smarty->assign("T_DAYS_AFTER_ENROLLMENT", $days_after_enrollment);
$smarty->assign("T_COURSE_LESSONS", EfrontCourse::convertLessonObjectsToArrays($courseLessons));
//pr($courseLessons);
} else {
if ($_GET['op'] == 'export_course') {
if (isset($currentUser->coreAccess['content']) && $currentUser->coreAccess['content'] != 'change') {
eF_redirect("" . basename($_SERVER['PHP_SELF']) . "?ctg=control_panel&message=" . urlencode(_UNAUTHORIZEDACCESS) . "&message_type=failure");
}
/* Export part */
$form = new HTML_QuickForm("export_course_form", "post", basename($_SERVER['PHP_SELF']) . '?' . $baseUrl . '&op=export_course', "", null, true);
$form->addElement('submit', 'submit_export_course', _EXPORT, 'class = "flatButton"');
try {
$currentExportedFile = new EfrontFile($currentUser->user['directory'] . '/temp/' . EfrontFile::encode($currentCourse->course['name']) . '.zip');
$smarty->assign("T_EXPORTED_FILE", $currentExportedFile);
} catch (Exception $e) {
}
if ($form->isSubmitted() && $form->validate()) {
echo "<status>error</status>";
echo "<message>Incomplete arguments</message>";
echo "</xml>";
}
} else {
echo "<xml>";
echo "<status>error</status>";
echo "<message>Invalid token</message>";
echo "</xml>";
}
break;
case 'course_lessons':
if (isset($_GET['token']) && checkToken($_GET['token'])) {
if (isset($_GET['course'])) {
$course = new EfrontCourse($_GET['course']);
$lessons = EfrontCourse::convertLessonObjectsToArrays($course->getCourseLessons());
echo "<xml>";
echo "\n\t";
echo "<lessons>";
echo "\n\t\t";
foreach ($lessons as $key => $values) {
echo "<lesson>";
echo "\n\t\t\t";
echo "<id>" . $lessons[$key]['id'] . "</id>";
echo "\n\t\t\t";
echo "<name>" . $lessons[$key]['name'] . "</name>";
echo "\n\t\t\t";
echo "<previous_lessons_ID>" . $lessons[$key]['previous_lessons_ID'] . "</previous_lessons_ID>";
echo "\n\t\t";
echo "</lesson>";
}
