class.ilObjEmployeeTalkAccess.php

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<?php

declare(strict_types=1);

use ILIAS\EmployeeTalk\UI\ControlFlowCommand;
use ILIAS\DI\Container;
use ILIAS\EmployeeTalk\Talk\EmployeeTalkPositionAccessLevel;
use ILIAS\EmployeeTalk\TalkSeries\Repository\IliasDBEmployeeTalkSeriesRepository;
use ILIAS\MyStaff\ilMyStaffAccess;
use OrgUnit\User\ilOrgUnitUser;

final class ilObjEmployeeTalkAccess extends ilObjectAccess
{
    private static ?self $instance = null;
    private ilOrgUnitUserAssignmentQueries $ua;
    private ilOrgUnitGlobalSettings $set;
    private IlOrgUnitPositionAccess $orgUnitAccess;
    private Container $container;
    private ilOrgUnitObjectTypePositionSetting $talkPositionSettings;
    private IliasDBEmployeeTalkSeriesRepository $seriesSettingsRepository;

    public static function getInstance(): self
    {
        if (is_null(self::$instance)) {
            self::$instance = new ilObjEmployeeTalkAccess();
        }

        return self::$instance;
    }

    public function __construct()
    {
        $this->container = $GLOBALS['DIC'];

        $this->set = ilOrgUnitGlobalSettings::getInstance();
        $this->ua = ilOrgUnitUserAssignmentQueries::getInstance();
        $this->orgUnitAccess = new ilOrgUnitPositionAccess($this->container->access());
        $this->talkPositionSettings = $this->set->getObjectPositionSettingsByType(ilObjEmployeeTalk::TYPE);
        $this->seriesSettingsRepository = new IliasDBEmployeeTalkSeriesRepository($this->container->user(), $this->container->database());
    }

    public static function _getCommands(): array
    {
        $commands = [
            [
                'permission' => 'read',
                'cmd' => ControlFlowCommand::DEFAULT,
                'lang_var' => 'show',
                'default' => true,
            ]
        ];

        return $commands;
    }

    public static function _isOffline($obj_id): bool
    {
        return false;
    }

    public static function _checkGoto($target): bool
    {
        $access = new self();

        $t_arr = explode('_', $target);
        if ($t_arr[0] !== 'etal' || ((int) $t_arr[1]) <= 0) {
            return false;
        }
        if ($access->canRead(intval($t_arr[1]))) {
            return true;
        }

        return false;
    }

    public function canCreate(?ilObjUser $talkParticipant = null): bool
    {
        try {
            $currentUserId = $this->getCurrentUsersId();

            // Root has always full access
            if ($currentUserId === 6) {
                return true;
            }

            // Talks are never editable if the position rights are not active, because the talks don't use RBAC
            if (!$this->talkPositionSettings->isActive()) {
                return false;
            }

            $positions = $this->ua->getPositionsOfUserId($currentUserId);

            // If we don't have a user just check if the current user has the right in any position to create a new talk
            if ($talkParticipant === null) {
                foreach ($positions as $position) {
                    // Check if the position has any relevant position rights
                    $permissionSet = ilOrgUnitPermissionQueries::getTemplateSetForContextName(ilObjEmployeeTalk::TYPE, strval($position->getId() ?? 0));
                    $isAbleToExecuteOperation = array_reduce($permissionSet->getOperations(), function (bool $prev, ilOrgUnitOperation $it) {
                        return $prev || $it->getOperationString() === EmployeeTalkPositionAccessLevel::CREATE;
                    }, false);

                    // If the position has no rights check the next one
                    if (!$isAbleToExecuteOperation) {
                        continue;
                    }

                    return true;
                }

                // The current user was not in a position with create etal position rights
                return false;
            }

            // Validate authority and position rights over the given participant
            return $this->hasAuthorityAndOperationPermissionOverUser($talkParticipant, EmployeeTalkPositionAccessLevel::CREATE);
        } catch (\Exception $ex) {
            return false;
        }
    }

    public function hasPermissionToReadUnownedTalksOfUser(int $userId): bool
    {
        try {
            return $this->hasAuthorityAndOperationPermissionOverUser(new ilObjUser($userId), EmployeeTalkPositionAccessLevel::VIEW);
        } catch (\Exception $ex) {
            return false;
        }
    }

    public function canRead(int $refId): bool
    {
        return $this->isPermittedToExecuteOperation($refId, EmployeeTalkPositionAccessLevel::VIEW);
    }

    public function canEditTalkLockStatus(int $refId): bool
    {
        $currentUserId = $this->getCurrentUsersId();

        // Root has always full access
        if ($currentUserId === 6) {
            return true;
        }

        $talk = new ilObjEmployeeTalk($refId);
        return $talk->getOwner() === $currentUserId;
    }

    public function canEdit(int $refId): bool
    {
        return $this->isPermittedToExecuteOperation($refId, EmployeeTalkPositionAccessLevel::EDIT);
    }

    public function canDelete(int $refId): bool
    {
        $talk = new ilObjEmployeeTalk($refId);
        $user = $this->getCurrentUsersId();
        if ($user === $talk->getOwner()) {
            return true;
        }
        // global admins can delete
        if ($this->container->rbac()->review()->isAssigned(
            $user,
            SYSTEM_ROLE_ID
        )) {
            return true;
        }
        return false;
    }

    private function isPermittedToExecuteOperation(int $refId, string $operation): bool
    {
        $currentUserId = $this->getCurrentUsersId();

        // Root has always full access
        if ($currentUserId === 6) {
            return true;
        }

        // Talks are never editable if the position rights are not active, because the talks don't use RBAC
        if (!$this->talkPositionSettings->isActive()) {
            return false;
        }

        $talk = new ilObjEmployeeTalk($refId);
        $series = $talk->getParent();
        $hasAuthority = $this->hasAuthorityAndOperationPermissionOverUser(new ilObjUser($talk->getData()->getEmployee()), $operation);
        $data = $talk->getData();
        $seriesSettings = $this->seriesSettingsRepository->readEmployeeTalkSerieSettings($series->getId());
        $canExecuteOperation = $this->orgUnitAccess->checkPositionAccess($operation, $refId);
        $isOwner = $talk->getOwner() === $currentUserId;

        if ($isOwner) {
            return true;
        }

        if ($currentUserId === $data->getEmployee()) {
            // The Employee can never edit their own talks
            if ($operation !== EmployeeTalkPositionAccessLevel::VIEW) {
                return false;
            }

            // The Employee can always read their own talks
            return true;
        }

        //Only owner can edit talks with enabled write lock
        if ($seriesSettings->isLockedEditing() && $operation === EmployeeTalkPositionAccessLevel::EDIT) {
            return false;
        }

        // Has no authority over the employee
        if (!$hasAuthority) {
            return false;
        }

        // Has Authority and is permitted to execute the given permission
        if ($canExecuteOperation) {
            return true;
        }

        // Has authority but no permission
        return false;
    }

    public function isTalkReadonlyByCurrentUser(int $ref_id): bool
    {
        return !$this->canEdit($ref_id);
    }

    private function getCurrentUsersId(): int
    {
        return $this->container->user()->getId();
    }

    private function hasAuthorityAndOperationPermissionOverUser(ilObjUser $user, string $operation): bool
    {
        $myStaffAccess = ilMyStaffAccess::getInstance();
        $currentUserId = $this->getCurrentUsersId();
        $userId = $user->getId();

        $managedOrgUnitUsersOfUserByPosition = $myStaffAccess->getUsersForUserPerPosition($currentUserId);

        foreach ($managedOrgUnitUsersOfUserByPosition as $position => $managedOrgUnitUserByPosition) {
            // Check if the position has any relevant position rights
            $permissionSet = ilOrgUnitPermissionQueries::getTemplateSetForContextName(ilObjEmployeeTalk::TYPE, strval($position));
            $isAbleToExecuteOperation = array_reduce($permissionSet->getOperations(), function (bool $prev, ilOrgUnitOperation $it) use ($operation) {
                return $prev || $it->getOperationString() === $operation;
            }, false);

            if (!$isAbleToExecuteOperation) {
                continue;
            }

            foreach ($managedOrgUnitUserByPosition as $managedOrgUnitUser) {
                if (intval($managedOrgUnitUser) === $userId) {
                    return true;
                }
            }
        }

        return false;
    }
}