class.ilObjMainMenuAccess.php

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<?php

class ilObjMainMenuAccess extends ilObjectAccess
{

    private $http;
    private $user;
    private $rbacsystem;
    private $rbacreview;

    public function __construct()
    {
        global $DIC;
        $this->rbacreview = $DIC->rbac()->review();
        $this->rbacsystem = $DIC->rbac()->system();
        $this->user       = $DIC->user();
        $this->http       = $DIC->http();
    }

    public function checkAccessAndThrowException(string $permission) : void
    {
        if (!$this->hasUserPermissionTo($permission)) {
            throw new ilException('Permission denied');
        }
    }

    public function hasUserPermissionTo(string $permission) : bool
    {
        return (bool) $this->rbacsystem->checkAccess($permission, $this->http->request()->getQueryParams()['ref_id']);
    }


    public function getGlobalRoles(): array {
        $global_roles = $this->rbacreview->getRolesForIDs(
            $this->rbacreview->getGlobalRoles(),false
        );

        $roles = [];
        foreach ($global_roles as $global_role) {
            $roles[$global_role['rol_id']] = $global_role['title'];
        }

        return $roles;
    }

    public function isCurrentUserAllowedToSeeCustomItem(ilMMCustomItemStorage $item) : Closure
    {
        return function () use ($item): bool {
            $roles_of_current_user = $this->rbacreview->assignedGlobalRoles($this->user->getId());
            if (!$item->hasRoleBasedVisibility()) {
                return true;
            }
            if ($item->hasRoleBasedVisibility() && !empty($item->getGlobalRoleIDs())) {
                foreach ($roles_of_current_user as $role_of_current_user) {
                    if (in_array($role_of_current_user, $item->getGlobalRoleIDs())) {
                        return true;
                    }
                }
            }
            return false;
        };
    }
}