class.ilAppointmentPresentationGroupGUI.php

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<?php

declare(strict_types=1);

class ilAppointmentPresentationGroupGUI extends ilAppointmentPresentationGUI implements ilCalendarAppointmentPresentation
{
    public function collectPropertiesAndActions(): void
    {
        $settings = ilCalendarSettings::_getInstance();
        $app = $this->appointment;

        $this->lng->loadLanguageModule("grp");

        $cat_info = $this->getCatInfo();
        $grp = new ilObjGroup($cat_info['obj_id'], false);

        $refs = ilObject::_getAllReferences($cat_info['obj_id']);
        $grp_ref_id = current($refs);

        // add common section (title, description, object/calendar, location)
        $this->addCommonSection($app, $cat_info['obj_id']);

        if ($app['event']->isAutogenerated() && $grp->getInformation()) {
            $this->addInfoSection($this->lng->txt("cal_grp_info"));
            $this->addInfoProperty(
                $this->lng->txt("grp_information"),
                ilUtil::makeClickable(nl2br($grp->getInformation()))
            );
        }

        // last edited
        $this->addLastUpdate($app);

        $this->addAction($this->lng->txt("grp_grp_open"), ilLink::_getStaticLink($grp_ref_id, "grp"));

        // register/unregister to appointment
        if ($settings->isCGRegistrationEnabled()) {
            if (!$app['event']->isAutoGenerated()) {
                $reg = new ilCalendarRegistration($app['event']->getEntryId());

                if ($reg->isRegistered(
                    $this->user->getId(),
                    new ilDateTime($app['dstart'], IL_CAL_UNIX),
                    new ilDateTime($app['dend'], IL_CAL_UNIX)
                )) {
                    //$this->ctrl->setParameterByClass('ilcalendarappointmentgui','seed',$this->getSeed()->get(IL_CAL_DATE));
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $app['event']->getEntryId());
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dstart', $app['dstart']);
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dend', $app['dend']);

                    $this->addAction(
                        $this->lng->txt('cal_reg_unregister'),
                        $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'confirmUnregister')
                    );
                } else {
                    //$this->ctrl->setParameterByClass('ilcalendarappointmentgui','seed',$this->getSeed()->get(IL_CAL_DATE));
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'app_id', $app['event']->getEntryId());
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dstart', $app['dstart']);
                    $this->ctrl->setParameterByClass('ilcalendarappointmentgui', 'dend', $app['dend']);

                    $this->addAction(
                        $this->lng->txt('cal_reg_register'),
                        $this->ctrl->getLinkTargetByClass('ilcalendarappointmentgui', 'confirmRegister')
                    );
                }
                $registered = $reg->getRegisteredUsers(
                    new \ilDateTime($app['dstart'], IL_CAL_UNIX),
                    new \ilDateTime($app['dend'], IL_CAL_UNIX)
                );

                $users = "";
                foreach ($registered as $user) {
                    $users .= $this->getUserName($user) . '<br />';
                }
                if ($users != "") {
                    $this->addInfoProperty($this->lng->txt("cal_reg_registered_users"), $users);
                }
            }
        }
    }
}