diff --git a/locale.xml b/locale.xml
index 60aea05db96ce7b81492a1e135a88ac503902878..97509d47494e678be4c426ad46c0fd1a2ad6aead 100644
--- a/locale.xml
+++ b/locale.xml
@@ -244,6 +244,11 @@
<de><![CDATA[Darf Menüs editieren]]></de>
<en><![CDATA[Is allowed to edit menus]]></en>
</locale>
+
+ <locale name="provider.Rest.title">
+ <de><![CDATA[QUIQQER Menüs REST API]]></de>
+ <en><![CDATA[QUIQQER Menus REST API]]></en>
+ </locale>
</groups>
<groups name="quiqqer/menu" datatype="php">
diff --git a/package.xml b/package.xml
index 0f57aa8fc6404e11fbfda2c29a2123173b6c67ac..9483e13c7233237cabe0865c1681dcc452679452 100644
--- a/package.xml
+++ b/package.xml
@@ -23,5 +23,9 @@
<license><![CDATA[PCSG QL-1.0]]></license>
<license><![CDATA[GPL-3.0+]]></license>
</copyright>
+
+ <provider>
+ <rest src="\QUI\Menu\Rest\Provider"/>
+ </provider>
</package>
</quiqqer>
\ No newline at end of file
diff --git a/src/QUI/Menu/Rest/Provider.php b/src/QUI/Menu/Rest/Provider.php
new file mode 100644
index 0000000000000000000000000000000000000000..cb146e9386ac234ceb15b85bc197ca71683ae581
--- /dev/null
+++ b/src/QUI/Menu/Rest/Provider.php
@@ -0,0 +1,341 @@
+<?php
+
+namespace QUI\Menu\Rest;
+
+use QUI;
+use QUI\REST\ProviderInterface;
+use Psr\Http\Message\ServerRequestInterface as RequestInterface;
+use Psr\Http\Message\ResponseInterface as ResponseInterface;
+use Psr\Http\Message\MessageInterface;
+use QUI\REST\Server;
+use QUI\CoreRest\Handler;
+use Slim\Routing\RouteCollectorProxy;
+use QUI\Utils\Security\Orthos;
+use QUI\Menu\Independent\Handler as MenuHandler;
+use QUI\Menu\Independent\Factory as MenuFactory;
+
+/**
+ * Class Provider
+ *
+ * REST API endpoints for QUIQQER Menus.
+ */
+class Provider implements ProviderInterface
+{
+ /**
+ * Provider constructor.
+ */
+ public function __construct()
+ {
+ if (!\defined('SYSTEM_INTERN')) {
+ \define('SYSTEM_INTERN', 1); // Session user = System User
+ }
+ }
+
+ /**
+ * Registered some REST Api Calls
+ *
+ * @param Server $Server
+ */
+ public function register(Server $Server)
+ {
+ $Slim = $Server->getSlim();
+
+ // Register paths
+ $Slim->group('/menus', function (RouteCollectorProxy $RouteCollector) {
+ // CRUD
+ $RouteCollector->post('/create', [$this, 'create']);
+ $RouteCollector->get('/get', [$this, 'get']);
+ $RouteCollector->patch('/update', [$this, 'update']);
+ $RouteCollector->delete('/delete', [$this, 'delete']);
+ });
+ }
+
+ /**
+ * CREATE a new QUIQQER Menu
+ *
+ * @param RequestInterface $Request
+ * @param ResponseInterface $Response
+ * @return MessageInterface
+ */
+ public function create(RequestInterface $Request, ResponseInterface $Response): MessageInterface
+ {
+ $params = $Request->getParsedBody();
+ $menu = [];
+
+ $requiredFields = [
+ 'title',
+ ];
+
+ foreach ($requiredFields as $field) {
+ if (empty($params[$field])) {
+ return Handler::getGenericErrorResponse('Field "'.$field.'" is missing.');
+ }
+
+ $menu[$field] = Orthos::clear($params[$field]);
+ }
+
+ $optionalFields = [
+ 'id',
+ 'workingTitle',
+ 'data'
+ ];
+
+ foreach ($optionalFields as $field) {
+ if (empty($params[$field])) {
+ continue;
+ }
+
+ if (\is_array($params[$field])) {
+ $value = Orthos::clearArray($params[$field]);
+ } else {
+ $value = Orthos::clear($params[$field]);
+ }
+
+ $menu[$field] = $value;
+ }
+
+ try {
+ /*
+ * If the menu has to have a specific ID, we have to make sure that the ID is not taken.
+ */
+ $menuId = false;
+
+ if (!empty($menu['id'])) {
+ $menuId = (int)$menu['id'];
+
+ try {
+ $menu = MenuHandler::getMenu($menuId);
+ } catch (\Exception $Exception) {
+ QUI\System\Log::writeDebugException($Exception);
+ $menu = false;
+ }
+
+ if ($menu) {
+ throw new QUI\Exception(
+ 'Menu with specific id #'.$menuId.' cannot be created, since a menu with this id already'
+ .' exists.'
+ );
+ }
+ }
+
+ $Menu = MenuFactory::createMenu();
+ $newMenuId = $Menu->getId();
+
+ if ($menuId) {
+ QUI::getDataBase()->update(
+ MenuHandler::table(),
+ [
+ 'id' => $menuId,
+ ],
+ [
+ 'id' => $newMenuId
+ ]
+ );
+
+ $newMenuId = $menuId;
+ $Menu = MenuHandler::getMenu($newMenuId);
+ }
+
+ $Menu->setTitle($menu['title']);
+
+ if (!empty($menu['workingTitle'])) {
+ $Menu->setWorkingTitle($menu['workingTitle']);
+ }
+
+ if (!empty($menu['data'])) {
+ $Menu->setData($menu['data']);
+ }
+
+ $Menu->save(QUI::getUsers()->getSystemUser());
+ } catch (\Exception $Exception) {
+ return Handler::getGenericExceptionResponse($Exception);
+ }
+
+ return Handler::getGenericSuccessResponse(
+ 'Menu created.',
+ [
+ 'id' => $newMenuId
+ ]
+ );
+ }
+
+ /**
+ * GET data of a QUIQQER Menu
+ *
+ * @param RequestInterface $Request
+ * @param ResponseInterface $Response
+ * @return MessageInterface
+ */
+ public function get(RequestInterface $Request, ResponseInterface $Response): MessageInterface
+ {
+ $params = $Request->getParsedBody();
+ $menu = [];
+
+ $requiredFields = [
+ 'id'
+ ];
+
+ foreach ($requiredFields as $field) {
+ if (empty($params[$field])) {
+ return Handler::getGenericErrorResponse('Field "'.$field.'" is missing.');
+ }
+
+ $menu[$field] = Orthos::clear($params[$field]);
+ }
+
+ try {
+ $Menu = MenuHandler::getMenu($menu['id']);
+ } catch (\Exception $Exception) {
+ return Handler::getGenericExceptionResponse($Exception);
+ }
+
+ return Handler::getGenericSuccessResponse(
+ null,
+ $Menu->toArray()
+ );
+ }
+
+ /**
+ * UPDATE data of a QUIQQER Menu
+ *
+ * @param RequestInterface $Request
+ * @param ResponseInterface $Response
+ * @return MessageInterface
+ */
+ public function update(RequestInterface $Request, ResponseInterface $Response): MessageInterface
+ {
+ $params = $Request->getParsedBody();
+ $menu = [];
+
+ $requiredFields = [
+ 'id'
+ ];
+
+ foreach ($requiredFields as $field) {
+ if (empty($params[$field])) {
+ return Handler::getGenericErrorResponse('Field "'.$field.'" is missing.');
+ }
+
+ $menu[$field] = Orthos::clear($params[$field]);
+ }
+
+ $optionalFields = [
+ 'title',
+ 'workingTitle',
+ 'data'
+ ];
+
+ foreach ($optionalFields as $field) {
+ if (empty($params[$field])) {
+ continue;
+ }
+
+ if (\is_array($params[$field])) {
+ $value = Orthos::clearArray($params[$field]);
+ } else {
+ $value = Orthos::clear($params[$field]);
+ }
+
+ $menu[$field] = $value;
+ }
+
+ try {
+ $Menu = MenuHandler::getMenu((int)$menu['id']);
+
+ if (!empty($menu['title'])) {
+ $Menu->setTitle($menu['title']);
+ }
+
+ if (!empty($menu['workingTitle'])) {
+ $Menu->setWorkingTitle($menu['workingTitle']);
+ }
+
+ if (!empty($menu['data'])) {
+ $Menu->setData($menu['data']);
+ }
+
+ $Menu->save(QUI::getUsers()->getSystemUser());
+ } catch (\Exception $Exception) {
+ QUI\System\Log::writeException($Exception);
+
+ return Handler::getGenericExceptionResponse($Exception);
+ }
+
+ return Handler::getGenericSuccessResponse(
+ 'Menu #'.$menu['id'].' successfully updated.',
+ $Menu->toArray()
+ );
+ }
+
+ /**
+ * DELETE a QUIQQER Site
+ *
+ * @param RequestInterface $Request
+ * @param ResponseInterface $Response
+ * @return MessageInterface
+ */
+ public function delete(RequestInterface $Request, ResponseInterface $Response): MessageInterface
+ {
+ $params = $Request->getParsedBody();
+ $menu = [];
+
+ $requiredFields = [
+ 'id'
+ ];
+
+ foreach ($requiredFields as $field) {
+ if (empty($params[$field])) {
+ return Handler::getGenericErrorResponse('Field "'.$field.'" is missing.');
+ }
+
+ $menu[$field] = Orthos::clear($params[$field]);
+ }
+
+ try {
+ MenuFactory::deleteMenu((int)$menu['id']);
+ } catch (\Exception $Exception) {
+ return Handler::getGenericExceptionResponse($Exception);
+ }
+
+ return Handler::getGenericSuccessResponse(
+ 'Menu #'.$menu['id'].' successfully deleted.'
+ );
+ }
+
+ /**
+ * Get file containting OpenApi definition for this API.
+ *
+ * @return string|false - Absolute file path or false if no definition exists
+ */
+ public function getOpenApiDefinitionFile()
+ {
+ return false;
+ }
+
+ /**
+ * Get unique internal API name.
+ *
+ * This is required for requesting specific data about an API (i.e. OpenApi definition).
+ *
+ * @return string - Only letters; no other characters!
+ */
+ public function getName(): string
+ {
+ return 'QuiqqerMenus';
+ }
+
+ /**
+ * Get title of this API.
+ *
+ * @param QUI\Locale|null $Locale (optional)
+ * @return string
+ */
+ public function getTitle(QUI\Locale $Locale = null): string
+ {
+ if (empty($Locale)) {
+ $Locale = QUI::getLocale();
+ }
+
+ return $Locale->get('quiqqer/menu', 'provider.Rest.title');
+ }
+}