class.ilLPStatusCourseReference.php

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<?php

declare(strict_types=0);
class ilLPStatusCourseReference extends ilLPStatus
{
    private static $instances = [];

    private int $target_obj_id = 0;
    private array $status_info = [];

    public function __construct(int $a_obj_id)
    {
        global $DIC;

        parent::__construct($a_obj_id);
        $this->readTargetObjId($a_obj_id);
        $this->readStatusInfo($a_obj_id);
    }

    public static function _getCountNotAttempted(int $a_obj_id): int
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return count($self->getNotAttempted());
    }

    public static function _getNotAttempted(int $a_obj_id): array
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return $self->getNotAttempted();
    }

    public function getNotAttempted()
    {
        return $this->status_info[\ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM];
    }

    public static function _getCountInProgress(int $a_obj_id): int
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return count($self->getInProgress());
    }

    public static function _getInProgress(int $a_obj_id): array
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return $self->getInProgress();
    }

    public function getInProgress()
    {
        return $this->status_info[\ilLPStatus::LP_STATUS_IN_PROGRESS_NUM];
    }

    public static function _getCountCompleted(int $a_obj_id): int
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return count($self->getCompleted());
    }

    public static function _getCompleted(int $a_obj_id): array
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return $self->getCompleted();
    }

    public function getCompleted()
    {
        return $this->status_info[\ilLPStatus::LP_STATUS_COMPLETED_NUM];
    }

    public static function _getStatusInfo(int $a_obj_id): array
    {
        $self = self::getInstanceByObjId($a_obj_id);
        return $self->getStatusInfo();
    }

    public function getStatusInfo()
    {
        return $this->status_info;
    }

    public function readStatusInfo(int $a_obj_id): void
    {
        global $DIC;

        $database = $DIC->database();
        $query = 'select status,usr_id from ut_lp_marks ' .
            'where obj_id = ' . $database->quote(
                $this->target_obj_id,
                \ilDBConstants::T_INTEGER
            );
        $res = $database->query($query);

        $info = [
            \ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM => [],
            \ilLPStatus::LP_STATUS_IN_PROGRESS_NUM => [],
            \ilLPStatus::LP_STATUS_COMPLETED_NUM => [],
            \ilLPStatus::LP_STATUS_FAILED_NUM => []
        ];
        while ($row = $res->fetchRow(\ilDBConstants::FETCHMODE_OBJECT)) {
            if (array_key_exists((int) $row->status, $info)) {
                $info[(int) $row->status][] = (int) $row->usr_id;
            }
        }
        $this->status_info = $info;
    }

    public function determineStatus(
        int $a_obj_id,
        int $a_usr_id,
        ?object $a_obj = null
    ): int {
        $status = \ilLPStatus::_lookupStatus(
            $this->target_obj_id,
            $a_usr_id,
            false
        );
        if ($status) {
            return $status;
        }
        return \ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM;
    }

    private static function getInstanceByObjId(
        int $a_reference_obj_id
    ): ilLPStatusCourseReference {
        if (!isset(self::$instances[$a_reference_obj_id])) {
            self::$instances[$a_reference_obj_id] = new self(
                $a_reference_obj_id
            );
        }
        return self::$instances[$a_reference_obj_id];
    }

    private function readTargetObjId(int $a_obj_id): void
    {
        $this->target_obj_id = ilObject::_lookupObjId(
            (int) ilObjCourseReference::_lookupTargetRefId($a_obj_id)
        );
    }
}