/**
* Performs the data importation from Moodle core tables (courses, enrolled users, logs). This importation is done only if
* database_helper->has_data_to_be_imported() returns true.
*
* @param int $courseid The current course id for which the data has to be imported.
*/
protected function import_data($courseid)
{
$courseyear = $this->db->get_course_start_week_and_year($courseid)['year'];
$previouscourses = $this->db->find_course_previous_teaching_ids_core_tables($courseid, $courseyear);
foreach ($previouscourses as $previouscourse) {
$this->db->dump_previous_core_info_to_historic_tables($previouscourse);
}
$previouscourses = $this->db->find_course_previous_teachings_ids_historic_tables($courseid, $courseyear);
$this->db->insert_courses_associations($courseid, $previouscourses);
}
/**
* Determines if the course has had the minimum previous teachings in the past years.
* First, looks into Moodle core tables for existing previous courses. If it doesn't find any, it tries luck in
* plugin's historic table. If it doesn't found neither here, means that the course has not previous teachings.
*
* @see find_course_previous_teachings_ids($currentcourseid, $currentyear) in database_helper.php.
* @param int $courseid The course to determine if has had the minimum teachings before.
* @param int $currentyear The year the current course began in.
* @param database_helper $db The object with deals with database.
* @return boolean If the given course has had the minimum teachings before or not.
*/
public static function meets_minimum_previous_courses($courseid, $currentyear, $db)
{
$previouscourses = $db->find_course_previous_teaching_ids_core_tables($courseid, $currentyear);
$minimum = false;
if (count($previouscourses) >= self::MINIMUM_PREVIOUS_COURSES) {
$minimum = true;
}
if (!$minimum) {
$previouscourses = $db->find_course_previous_teachings_ids_historic_tables($courseid, $currentyear);
if (count($previouscourses) >= self::MINIMUM_PREVIOUS_COURSES) {
$minimum = true;
}
}
return $minimum;
}
