class.ilECSUserConsents.php

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<?php

declare(strict_types=1);

class ilECSUserConsents
{
    private static array $instances = [];

    private int $usr_id;
    private array $consents = [];

    protected ilDBInterface $db;

    protected function __construct(int $a_usr_id)
    {
        global $DIC;

        $this->db = $DIC->database();
        $this->usr_id = $a_usr_id;
        if ($a_usr_id > 0) {
            $this->read();
        }
    }

    public static function getInstanceByUserId(int $a_usr_id): self
    {
        if (!isset(self::$instances[$a_usr_id])) {
            self::$instances[$a_usr_id] = new self($a_usr_id);
        }
        return self::$instances[$a_usr_id];
    }

    public function getUserId(): int
    {
        return $this->usr_id;
    }

    public function hasConsented(int $server_id, int $a_mid): bool
    {
        return array_key_exists("{$server_id}:{$a_mid}", $this->consents);
    }

    public function delete(): void
    {
        foreach ($this->consents as $mid => $consent) {
            $consent->delete();
        }
        $this->consents = [];
    }

    public function add(int $server_id, int $a_mid): void
    {
        if (!$this->hasConsented($server_id, $a_mid)) {
            $consent = new ilECSUserConsent($this->getUserId(), $server_id, $a_mid);
            $consent->save();
            $this->consents["{$server_id}:{$a_mid}"] = $consent;
        }
    }

    protected function read(): void
    {
        $query = 'SELECT * FROM ecs_user_consent ' .
            'WHERE usr_id = ' . $this->db->quote(
                $this->getUserId(),
                ilDBConstants::T_INTEGER
            );
        $res = $this->db->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $this->consents["{$row->server_id}:{$row->mid}"] = new ilECSUserConsent(
                (int) $row->usr_id,
                (int) $row->server_id,
                (int) $row->mid
            );
        }
    }
}