Add room creation options endpoint and integrate with chat UI: Implement getRoomCreateOptions in ChatController and ChatService, add corresponding API route, and enhance MultiChatDialog for room creation with localized labels and validation. Update i18n files for new room creation features.

backend/controllers/chatController.js

@@ -13,6 +13,7 @@ class ChatController {
     this.sendOneToOneMessage = this.sendOneToOneMessage.bind(this);
     this.getOneToOneMessageHistory = this.getOneToOneMessageHistory.bind(this);
     this.getRoomList = this.getRoomList.bind(this);
+    this.getRoomCreateOptions = this.getRoomCreateOptions.bind(this);
   }
 
   async getMessages(req, res) {
@@ -175,6 +176,15 @@ class ChatController {
       res.status(500).json({ error: error.message });
     }
   }
+
+  async getRoomCreateOptions(req, res) {
+    try {
+      const options = await chatService.getRoomCreateOptions();
+      res.status(200).json(options);
+    } catch (error) {
+      res.status(500).json({ error: error.message });
+    }
+  }
 }
 
 export default ChatController;

backend/routers/chatRouter.js

@@ -15,5 +15,6 @@ router.post('/initOneToOne', authenticate, chatController.initOneToOne);
 router.post('/oneToOne/sendMessage', authenticate, chatController.sendOneToOneMessage); // Neue Route zum Senden einer Nachricht
 router.get('/oneToOne/messageHistory', authenticate, chatController.getOneToOneMessageHistory); // Neue Route zum Abrufen der Nachrichtengeschichte
 router.get('/rooms', chatController.getRoomList);
+router.get('/room-create-options', authenticate, chatController.getRoomCreateOptions);
 
 export default router;

backend/services/chatService.js

@@ -148,6 +148,27 @@ class ChatService {
       ]
     });
   }
+
+  async getRoomCreateOptions() {
+    const { default: UserRightType } = await import('../models/type/user_right.js');
+    const { default: InterestType } = await import('../models/type/interest.js');
+
+    const [rights, interests] = await Promise.all([
+      UserRightType.findAll({
+        attributes: ['id', 'title'],
+        order: [['id', 'ASC']]
+      }),
+      InterestType.findAll({
+        attributes: ['id', 'name'],
+        order: [['id', 'ASC']]
+      })
+    ]);
+
+    return {
+      rights: rights.map((r) => ({ id: r.id, title: r.title })),
+      roomTypes: interests.map((i) => ({ id: i.id, name: i.name }))
+    };
+  }
 }
 
 export default new ChatService();