public function render()
{
if (isset($this->config['course_id'])) {
$course = new Course();
$course->include_related('period');
$course->get_by_id((int) $this->config['course_id']);
$this->parser->assign('course', $course);
if ($course->exists()) {
$task_sets = new Task_set();
$task_sets->where_related($course);
$task_sets->where('published', 1);
$task_sets->where('content_type', 'task_set');
$task_sets_count = $task_sets->count();
$this->parser->assign('task_sets_count', $task_sets_count);
$task_sets->where_related($course);
$task_sets->where('published', 1);
$task_sets->where('content_type', 'project');
$projects_count = $task_sets->count();
$this->parser->assign('projects_count', $projects_count);
$groups = new Group();
$groups->where_related($course);
$groups_count = $groups->count();
$this->parser->assign('groups_count', $groups_count);
$students = new Student();
$students->where_related('participant/course', 'id', $course->id);
$students->where_related('participant', 'allowed', 1);
$students_count = $students->count();
$this->parser->assign('students_count', $students_count);
$task_set_permissions = new Task_set_permission();
$task_set_permissions->select_func('COUNT', '*', 'count');
$task_set_permissions->where('enabled', 1);
$task_set_permissions->where_related('task_set', 'id', '${parent}.id');
$now = date('Y-m-d H:i:s');
$plus_two_weeks = date('Y-m-d H:i:s', strtotime($now . ' + 2 weeks'));
$minus_one_week = date('Y-m-d H:i:s', strtotime($now . ' - 1 week'));
$task_sets->select('id, name, upload_end_time AS min_upload_end_time, upload_end_time AS max_upload_end_time');
$task_sets->where_related($course);
$task_sets->where('published', 1);
$task_sets->where_subquery('0', $task_set_permissions);
$task_sets->where('upload_end_time >=', $minus_one_week);
$task_sets->where('upload_end_time <=', $plus_two_weeks);
$task_sets_2 = new Task_set();
$task_sets_2->select('id, name');
$task_sets_2->where_related($course);
$task_sets_2->where('published', 1);
$task_sets_2->select_min('task_set_permissions.upload_end_time', 'min_upload_end_time');
$task_sets_2->select_max('task_set_permissions.upload_end_time', 'max_upload_end_time');
$task_sets_2->where_related('task_set_permission', 'enabled', 1);
$task_sets_2->having('(MAX(`task_set_permissions`.`upload_end_time`) >= ' . $this->db->escape($minus_one_week) . ' AND MAX(`task_set_permissions`.`upload_end_time`) <= ' . $this->db->escape($plus_two_weeks) . ')');
$task_sets_2->or_having('(MIN(`task_set_permissions`.`upload_end_time`) >= ' . $this->db->escape($minus_one_week) . ' AND MIN(`task_set_permissions`.`upload_end_time`) <= ' . $this->db->escape($plus_two_weeks) . ')');
$task_sets_2->group_by('id');
$task_sets->union_iterated($task_sets_2, FALSE, 'min_upload_end_time DESC, max_upload_end_time DESC', isset($this->config['number_of_task_sets']) ? (int) $this->config['number_of_task_sets'] : 5);
$this->parser->assign('task_sets', $task_sets);
}
}
$this->parser->parse('widgets/admin/course_overview/main.tpl');
}
