class.SkillTreeManager.php

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<?php

declare(strict_types=1);

namespace ILIAS\Skill\Tree;

use ILIAS\Skill\Access\SkillTreeAccess;
use ILIAS\Skill\Access\SkillManagementAccess;
use ILIAS\Skill\Service\SkillAdminGUIRequest;

class SkillTreeManager
{
    protected \ilCtrl $ctrl;
    protected \ilErrorHandling $error;
    protected \ilLanguage $lng;
    protected int $skmg_ref_id;
    protected \ilTree $repository_tree;
    protected SkillTreeFactory $tree_factory;
    protected SkillTreeAccess $tree_access_manager;
    protected SkillManagementAccess $management_access_manager;
    protected SkillAdminGUIRequest $admin_gui_request;
    protected int $requested_ref_id = 0;

    public function __construct(
        \ilTree $repository_tree,
        SkillTreeFactory $tree_factory
    ) {
        global $DIC;
        $this->ctrl = $DIC->ctrl();
        $this->error = $DIC["ilErr"];
        $this->lng = $DIC->language();
        $this->repository_tree = $repository_tree;
        $this->tree_factory = $tree_factory;
        $this->admin_gui_request = $DIC->skills()->internal()->gui()->admin_request();

        // TODO: Find a different way for the ref_id, because this is no GUI class
        $this->requested_ref_id = $this->admin_gui_request->getRefId();

        $this->tree_access_manager = $DIC->skills()->internal()->manager()->getTreeAccessManager($this->requested_ref_id);
        $this->management_access_manager = $DIC->skills()->internal()->manager()->getManagementAccessManager($this->requested_ref_id);
    }

    public function createTree(string $title, string $description): void
    {
        if (!$this->management_access_manager->hasCreateTreePermission()) {
            $this->error->raiseError($this->lng->txt('no_permission'), $this->error->WARNING);
        }
        $tree_obj = new \ilObjSkillTree();
        $tree_obj->setTitle($title);
        $tree_obj->setDescription($description);
        $tree_obj->create();
        $tree_obj->createReference();
        $tree_obj->putInTree($this->getSkillManagementRefId());
        $tree_obj->setPermissions($this->getSkillManagementRefId());

        $tree = $this->tree_factory->getTreeById($tree_obj->getId());
        $root_node = new \ilSkillRoot();
        $root_node->setTitle("Skill Tree Root Node");
        $root_node->create();
        $tree->addTree($tree_obj->getId(), $root_node->getId());
        $this->ctrl->setParameterByClass("ilobjskilltreegui", "ref_id", $tree_obj->getRefId());
        $this->ctrl->setParameterByClass("ilobjskilltreegui", "node_id", $tree->readRootId());
    }

    public function updateTree(\ilObjSkillTree $tree_obj, string $title, string $description): void
    {
        if (!$this->tree_access_manager->hasEditTreeSettingsPermission()) {
            $this->error->raiseError($this->lng->txt('no_permission'), $this->error->WARNING);
        }
        $tree_obj->setTitle($title);
        $tree_obj->setDescription($description);
        $tree_obj->update();
    }

    public function deleteTree(\ilObjSkillTree $tree_obj): void
    {
        if (!$this->management_access_manager->hasCreateTreePermission()) {
            $this->error->raiseError($this->lng->txt('no_permission'), $this->error->WARNING);
        }
        $tree_obj->delete();
    }

    public function getTrees(): \Generator
    {
        foreach ($this->repository_tree->getChilds($this->getSkillManagementRefId()) as $c) {
            if ($c["type"] == "skee") {
                yield new \ilObjSkillTree((int) $c["child"]);
            }
        }
    }

    public function getTree(int $tree_id): \ilObjSkillTree
    {
        $ref_id = (int) current(\ilObject::_getAllReferences($tree_id));
        return new \ilObjSkillTree($ref_id);
    }

    public function getSkillManagementRefId(): int
    {
        if (isset($this->skmg_ref_id)) {
            return $this->skmg_ref_id;
        }
        $skmg_obj = current(\ilObject::_getObjectsByType("skmg"));
        if ($skmg_obj) {
            $this->skmg_ref_id = (int) current(\ilObject::_getAllReferences((int) $skmg_obj["obj_id"]));
        }
        return $this->skmg_ref_id;
    }
}