update nextcloud handling

backend/src/controllers/nextcloud.controller.ts

@@ -113,7 +113,18 @@ class NextcloudController {
         res.status(400).json({ success: false, message: 'Room token fehlt' });
         return;
       }
-      const messages = await nextcloudService.getMessages(token, credentials.loginName, credentials.appPassword);
+      const lookIntoFuture = req.query.lookIntoFuture === '1';
+      const lastKnownMessageId = req.query.lastKnownMessageId
+        ? parseInt(req.query.lastKnownMessageId as string, 10)
+        : undefined;
+      const timeout = req.query.timeout
+        ? Math.min(parseInt(req.query.timeout as string, 10), 25)
+        : 25;
+      const messages = await nextcloudService.getMessages(token, credentials.loginName, credentials.appPassword, {
+        lookIntoFuture,
+        lastKnownMessageId,
+        timeout,
+      });
       res.status(200).json({ success: true, data: messages });
     } catch (error: any) {
       if (error?.code === 'NEXTCLOUD_AUTH_INVALID') {

backend/src/services/nextcloud.service.ts

@@ -195,25 +195,53 @@ async function getAllConversations(loginName: string, appPassword: string): Prom
   }
 }
 
-async function getMessages(token: string, loginName: string, appPassword: string): Promise<NextcloudChatMessage[]> {
+interface GetMessagesOptions {
+  lookIntoFuture?: boolean;
+  lastKnownMessageId?: number;
+  timeout?: number;
+}
+
+async function getMessages(token: string, loginName: string, appPassword: string, options?: GetMessagesOptions): Promise<NextcloudChatMessage[]> {
   const baseUrl = environment.nextcloudUrl;
   if (!baseUrl || !isValidServiceUrl(baseUrl)) {
     throw new Error('NEXTCLOUD_URL is not configured or is not a valid service URL');
   }
 
+  const lookIntoFuture = options?.lookIntoFuture ?? false;
+  const ncTimeout = options?.timeout ?? 25;
+
+  const params: Record<string, any> = {
+    lookIntoFuture: lookIntoFuture ? 1 : 0,
+    limit: lookIntoFuture ? 100 : 50,
+    setReadMarker: 0,
+  };
+
+  if (lookIntoFuture) {
+    params.lastKnownMessageId = options?.lastKnownMessageId ?? 0;
+    params.timeout = ncTimeout;
+  }
+
   try {
     const response = await httpClient.get(
       `${baseUrl}/ocs/v2.php/apps/spreed/api/v1/chat/${encodeURIComponent(token)}`,
       {
-        params: { lookIntoFuture: 0, limit: 50, setReadMarker: 0 },
+        params,
         headers: {
           'Authorization': `Basic ${Buffer.from(loginName + ':' + appPassword).toString('base64')}`,
           'OCS-APIRequest': 'true',
           'Accept': 'application/json',
         },
+        ...(lookIntoFuture && {
+          timeout: (ncTimeout + 5) * 1000,
+          validateStatus: (s: number) => (s >= 200 && s < 300) || s === 304,
+        }),
       },
     );
 
+    if (response.status === 304) {
+      return [];
+    }
+
     const messages: any[] = response.data?.ocs?.data ?? [];
     return messages.map((m: any) => ({
       id: m.id,
@@ -384,5 +412,5 @@ async function getConversations(loginName: string, appPassword: string): Promise
   }
 }
 
-export type { NextcloudChatMessage };
+export type { NextcloudChatMessage, GetMessagesOptions };
 export default { initiateLoginFlow, pollLoginFlow, getConversations, getAllConversations, getMessages, sendMessage, markAsRead };