Improve messaging and dashboard reliability

tests/chat-service-username-persist.test.ts

@@ -6,7 +6,11 @@ import { runMigrations } from '../src/database/client.js';
 import { RedditUsersRepository } from '../src/database/repositories.js';
 import { ChatService } from '../src/services/chat/service.js';
 import { ChatCache } from '../src/services/chat/cache.js';
-import { MatrixAuthError, MatrixClient } from '../src/services/chat/matrix/client.js';
+import {
+  MatrixAuthError,
+  MatrixClient,
+  MatrixFeatureDisabledError,
+} from '../src/services/chat/matrix/client.js';
 import { createMockLogger } from './mockLogger.js';
 import { authenticatedAccountAuth } from './testUtils.js';
 
@@ -232,4 +236,54 @@ describe('ChatService username persistence', () => {
     expect(matrix.getRoomFullState).toHaveBeenCalledOnce();
     expect(matrix.getRoomMessages).not.toHaveBeenCalled();
   });
+
+  it('stops room state lookups after the homeserver reports the feature is disabled', async () => {
+    const logger = createMockLogger();
+    const cache = tmpCache(logger);
+    cache.set(['first', 'second'].map((name) => ({
+      username: 'unknown',
+      roomName: 'unknown',
+      lastMessageTime: Date.now(),
+      lastMessageSnippet: '',
+      isFromUs: false,
+      unread: false,
+      roomId: `!${name}:reddit.com`,
+      messages: [],
+    })));
+
+    const matrix = buildMatrix();
+    matrix.getRoomFullState = vi.fn().mockRejectedValue(
+      new MatrixFeatureDisabledError('disabled by configuration'),
+    );
+    matrix.getRoomMessages = vi.fn().mockImplementation(async (roomId: string) => ({
+      start: 'start',
+      chunk: [{
+        event_id: `$${roomId}`,
+        type: 'm.room.message',
+        sender: `@t2_${roomId.includes('first') ? 'first' : 'second'}:reddit.com`,
+        origin_server_ts: Date.now(),
+        content: { msgtype: 'm.text', body: 'hello' },
+      }],
+    }));
+    const usernameResolver = { resolveT2Ids: vi.fn().mockResolvedValue({}) };
+    const svc = new ChatService(
+      matrix,
+      logger,
+      undefined, undefined, undefined, usernameResolver,
+      cache,
+      undefined,
+      undefined,
+      authenticatedAccountAuth,
+    );
+
+    await svc.enrichUsernames();
+
+    expect(matrix.getRoomFullState).toHaveBeenCalledOnce();
+    expect(matrix.getRoomMessages).toHaveBeenCalledTimes(2);
+    expect(logger.logs.filter((entry) =>
+      entry.message.includes('room state lookup is disabled upstream'),
+    )).toHaveLength(1);
+    expect((await svc.getCachedConversations()).map((chat) => chat.username))
+      .toEqual(['t2_first', 't2_second']);
+  });
 });