class.ilObjLearningSequenceLearnerGUI.php

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<?php

declare(strict_types=1);

use ILIAS\HTTP\Wrapper\RequestWrapper;

class ilObjLearningSequenceLearnerGUI
{
    public const CMD_STANDARD = 'learnerView';
    public const CMD_EXTRO = 'learnerViewFinished';
    public const CMD_UNSUBSCRIBE = 'unsubscribe';
    public const CMD_VIEW = 'view';
    public const CMD_START = 'start';
    public const PARAM_LSO_NEXT_ITEM = 'lsoni';
    public const LSO_CMD_NEXT = 'lson';
    public const LSO_CMD_PREV = 'lsop';

    public function __construct(
        protected int $usr_id,
        protected ilAccess $access,
        protected ilCtrl $ctrl,
        protected ilLanguage $lng,
        protected ilGlobalTemplateInterface $tpl,
        protected ilToolbarGUI $toolbar,
        protected ILIAS\UI\Factory $ui_factory,
        protected ILIAS\UI\Renderer $renderer,
        protected ilLearningSequenceRoles $roles,
        protected ilLearningSequenceSettings $settings,
        protected ilLSCurriculumBuilder $curriculum_builder,
        protected ilLSLaunchlinksBuilder $launchlinks_builder,
        protected ilLSPlayer $player,
        protected string $intro,
        protected string $extro,
        protected RequestWrapper $get
    ) {
    }

    public function executeCommand(): void
    {
        $cmd = $this->ctrl->getCmd();
        switch ($cmd) {
            case self::CMD_STANDARD:
            case self::CMD_EXTRO:
                $this->view($cmd);
                break;
            case self::CMD_START:
                $this->addMember($this->usr_id);
                $this->ctrl->redirect($this, self::CMD_VIEW);
                break;
            case self::CMD_UNSUBSCRIBE:
                if ($this->launchlinks_builder->currentUserMayUnparticipate()) {
                    $this->roles->leave($this->usr_id);
                }
                $this->ctrl->redirect($this, self::CMD_STANDARD);
                break;
            case self::CMD_VIEW:
                $this->play();
                break;

            default:
                throw new ilException(
                    "ilObjLearningSequenceLearnerGUI: " .
                    "Command not supported: $cmd"
                );
        }
    }

    protected function view(string $cmd): void
    {
        $content = $this->getWrappedHTML(
            $this->getMainContent($cmd)
        );

        $this->tpl->setContent($content);

        $element = '<' . ilPCLauncher::PCELEMENT . '>';
        if (!str_contains($content, $element)) {
            $this->initToolbar($cmd);
        }

        $element = '<' . ilPCCurriculum::PCELEMENT . '>';
        if (!str_contains($content, $element)) {
            $curriculum = $this->curriculum_builder->getLearnerCurriculum();
            $this->tpl->setRightContent(
                $this->getWrappedHTML([$curriculum])
            );
        }
    }

    protected function addMember(int $usr_id): void
    {
        $admins = $this->roles->getLearningSequenceAdminIds();
        if (!in_array($usr_id, $admins)) {
            $this->roles->join($usr_id);
        }
    }

    protected function initToolbar(string $cmd)
    {
        foreach ($this->launchlinks_builder->getLinks() as $entry) {
            list($label, $link, $primary) = $entry;

            if ($primary) {
                $btn = $this->ui_factory->button()->primary($label, $link);
            } else {
                $btn = $this->ui_factory->button()->standard($label, $link);
            }
            $this->toolbar->addComponent($btn);
        }
    }

    private function getWrappedHTML(array $components): string
    {
        array_unshift(
            $components,
            $this->ui_factory->legacy()->content('<div class="ilLSOLearnerView">')
        );
        $components[] = $this->ui_factory->legacy()->content('</div>');

        return $this->renderer->render($components);
    }

    private function getMainContent(string $cmd): array
    {
        $img = null;
        $contents = [];

        if ($cmd === self::CMD_STANDARD) {
            if ($this->intro === '') {
                $contents[] = $this->ui_factory->legacy()->content($this->settings->getAbstract());
                $img = $this->settings->getAbstractImage();
                if ($img) {
                    $contents[] = $this->ui_factory->image()->responsive($img, '');
                }
            } else {
                $contents[] = $this->ui_factory->legacy()->content($this->intro);
            }
        }

        if ($cmd === self::CMD_EXTRO) {
            if ($this->extro === '') {
                $contents[] = $this->ui_factory->legacy()->content($this->settings->getExtro());
                $img = $this->settings->getExtroImage();
                if ($img) {
                    $contents[] = $this->ui_factory->image()->responsive($img, '');
                }
            } else {
                $contents[] = $this->ui_factory->legacy()->content($this->extro);
            }
        }
        return $contents;
    }

    protected function play(): void
    {
        $response = $this->player->play($this->get);

        switch ($response) {
            case null:
                //render the page
                $this->tpl->setContent('THIS SHOULD NOT SHOW');
                return;

            case 'EXIT::' . $this->player::LSO_CMD_FINISH:
                $cmd = self::CMD_EXTRO;
                break;

            case 'EXIT::' . $this->player::LSO_CMD_SUSPEND:
            default:
                $cmd = self::CMD_STANDARD;
                break;
        }
        $href = $this->ctrl->getLinkTarget($this, $cmd, '', false, false);
        \ilUtil::redirect($href);
    }
}