feat: add snackbar notification upon channels query pagination failure

src/components/ChannelList/__tests__/ChannelList.test.tsx

@@ -314,6 +314,42 @@ describe('ChannelList', () => {
     expect(results).toHaveNoViolations();
   });
 
+  it('should add a notification when the first page of channels fails to load', async () => {
+    useMockedApis(chatClient, [erroredPostApi()]);
+    const addNotificationSpy = vi.spyOn(chatClient.notifications, 'add');
+    vi.spyOn(console, 'warn').mockImplementation(() => null);
+
+    render(
+      <Chat client={chatClient}>
+        <WithComponents
+          overrides={{
+            ChannelListItemUI: ChannelPreviewComponent,
+            ChannelListUI: ChannelListComponent,
+          }}
+        >
+          <ChannelList
+            filters={{}}
+            options={{ presence: true, state: true, watch: true }}
+          />
+        </WithComponents>
+      </Chat>,
+    );
+
+    await waitFor(() => {
+      expect(addNotificationSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Failed to load channels',
+          options: expect.objectContaining({
+            severity: 'error',
+            tags: expect.arrayContaining(['target:channel-list']),
+            type: 'api:channel-list:load:failed',
+          }),
+          origin: { emitter: 'ChannelList' },
+        }),
+      );
+    });
+  });
+
   it('provides the error object to LoadingErrorIndicator', async () => {
     useMockedApis(chatClient, [erroredPostApi()]);
     vi.spyOn(console, 'warn').mockImplementationOnce(() => null);
@@ -341,6 +377,54 @@ describe('ChannelList', () => {
     expect(screen.getByText('StreamChat error HTTP code: 500')).toBeInTheDocument();
   });
 
+  it('should keep loaded channels visible and add a notification when loading more fails', async () => {
+    useMockedApis(chatClient, [queryChannelsApi([testChannel1, testChannel2])]);
+    const addNotificationSpy = vi.spyOn(chatClient.notifications, 'add');
+    vi.spyOn(console, 'warn').mockImplementation(() => null);
+
+    render(
+      <Chat client={chatClient}>
+        <WithComponents
+          overrides={{
+            ChannelListItemUI: ChannelPreviewComponent,
+            ChannelListUI: ChannelListComponent,
+          }}
+        >
+          <ChannelList filters={{}} options={{ limit: 2 }} />
+        </WithComponents>
+      </Chat>,
+    );
+
+    await waitFor(() => {
+      expect(screen.getByTestId(testChannel1.channel.id)).toBeInTheDocument();
+      expect(screen.getByTestId(testChannel2.channel.id)).toBeInTheDocument();
+    });
+
+    useMockedApis(chatClient, [erroredPostApi()]);
+
+    await act(() => {
+      fireEvent.click(screen.getByTestId('load-more-button'));
+    });
+
+    await waitFor(() => {
+      expect(addNotificationSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Failed to load more channels',
+          options: expect.objectContaining({
+            severity: 'error',
+            tags: expect.arrayContaining(['target:channel-list']),
+            type: 'api:channel-list:load-more:failed',
+          }),
+          origin: { emitter: 'ChannelList' },
+        }),
+      );
+    });
+
+    expect(screen.getByTestId(testChannel1.channel.id)).toBeInTheDocument();
+    expect(screen.getByTestId(testChannel2.channel.id)).toBeInTheDocument();
+    expect(screen.queryByTestId('error-indicator')).not.toBeInTheDocument();
+  });
+
   it('should render loading indicator before the first channel list load and on reload', async () => {
     const channelsQueryStatesHistory = [];
     const channelListMessengerLoadingHistory = [];

src/components/ChannelList/hooks/usePaginatedChannels.ts

@@ -12,6 +12,8 @@ import type {
 } from 'stream-chat';
 
 import { useChatContext } from '../../../context/ChatContext';
+import { useTranslationContext } from '../../../context/TranslationContext';
+import { useNotificationApi } from '../../Notifications';
 
 import type { ChannelsQueryState } from '../../Chat/hooks/useChannelsQueryState';
 
@@ -44,9 +46,11 @@ export const usePaginatedChannels = (
   recoveryThrottleIntervalMs: number = RECOVER_LOADED_CHANNELS_THROTTLE_INTERVAL_IN_MS,
   customQueryChannels?: CustomQueryChannelsFn,
 ) => {
+  const { addNotification } = useNotificationApi();
   const {
     channelsQueryState: { error, setError, setQueryInProgress },
   } = useChatContext('usePaginatedChannels');
+  const { t } = useTranslationContext();
   const [channels, setChannels] = useState<Array<Channel>>([]);
   const [hasNextPage, setHasNextPage] = useState(true);
   const lastRecoveryTimestamp = useRef<number | undefined>(undefined);
@@ -62,6 +66,8 @@ export const usePaginatedChannels = (
   // eslint-disable-next-line react-hooks/exhaustive-deps
   const queryChannels = async (queryType = 'load-more') => {
     setError(null);
+    const offset = queryType === 'reload' ? 0 : channels.length;
+    const isFirstPage = offset === 0;
 
     if (queryType === 'reload') {
       setChannels([]);
@@ -77,8 +83,6 @@ export const usePaginatedChannels = (
           setHasNextPage,
         });
       } else {
-        const offset = queryType === 'reload' ? 0 : channels.length;
-
         const newOptions = {
           offset,
           ...options,
@@ -105,7 +109,22 @@ export const usePaginatedChannels = (
       }
     } catch (error) {
       console.warn(error);
-      setError(error as ErrorFromResponse<APIErrorResponse>);
+      addNotification({
+        emitter: 'ChannelList',
+        error: error instanceof Error ? error : undefined,
+        message: isFirstPage
+          ? t('Failed to load channels')
+          : t('Failed to load more channels'),
+        severity: 'error',
+        targetPanels: ['channel-list'],
+        type: isFirstPage
+          ? 'api:channel-list:load:failed'
+          : 'api:channel-list:load-more:failed',
+      });
+
+      if (isFirstPage) {
+        setError(error as ErrorFromResponse<APIErrorResponse>);
+      }
     }
 
     setQueryInProgress(null);

src/i18n/de.json

@@ -96,10 +96,10 @@
   "aria/Mark Message Unread": "Als ungelesen markieren",
   "aria/Mark messages as read": "Nachrichten als gelesen markieren",
   "aria/Menu": "Menü",
-  "aria/Message,": "Nachricht,",
   "aria/Message Actions": "Nachrichtenaktionen",
   "aria/Message from {{ user }},": "Nachricht von {{ user }},",
   "aria/Message Options": "Nachrichtenoptionen",
+  "aria/Message,": "Nachricht,",
   "aria/Mute User": "Benutzer stummschalten",
   "aria/Notifications": "Benachrichtigungen",
   "aria/Open Attachment Selector": "Anhang-Auswahl öffnen",
@@ -229,6 +229,8 @@
   "Failed to end the poll due to {{reason}}": "Umfrage konnte aufgrund von {{reason}} nicht beendet werden",
   "Failed to jump to the first unread message": "Fehler beim Springen zur ersten ungelesenen Nachricht",
   "Failed to leave channel": "Kanal konnte nicht verlassen werden",
+  "Failed to load channels": "Kanäle konnten nicht geladen werden",
+  "Failed to load more channels": "Weitere Kanäle konnten nicht geladen werden",
   "Failed to mark channel as read": "Fehler beim Markieren des Kanals als gelesen",
   "Failed to play the recording": "Wiedergabe der Aufnahme fehlgeschlagen",
   "Failed to retrieve location": "Standort konnte nicht abgerufen werden",

src/i18n/en.json

@@ -96,10 +96,10 @@
   "aria/Mark Message Unread": "Mark Message Unread",
   "aria/Mark messages as read": "Mark messages as read",
   "aria/Menu": "Menu",
-  "aria/Message,": "Message,",
   "aria/Message Actions": "Message Actions",
   "aria/Message from {{ user }},": "Message from {{ user }},",
   "aria/Message Options": "Message Options",
+  "aria/Message,": "Message,",
   "aria/Mute User": "Mute User",
   "aria/Notifications": "Notifications",
   "aria/Open Attachment Selector": "Open Attachment Selector",
@@ -229,6 +229,8 @@
   "Failed to end the poll due to {{reason}}": "Failed to end the poll due to {{reason}}",
   "Failed to jump to the first unread message": "Failed to jump to the first unread message",
   "Failed to leave channel": "Failed to leave channel",
+  "Failed to load channels": "Failed to load channels",
+  "Failed to load more channels": "Failed to load more channels",
   "Failed to mark channel as read": "Failed to mark channel as read",
   "Failed to play the recording": "Failed to play the recording",
   "Failed to retrieve location": "Failed to retrieve location",

src/i18n/es.json

@@ -104,10 +104,10 @@
   "aria/Mark Message Unread": "Marcar como no leído",
   "aria/Mark messages as read": "Marcar mensajes como leídos",
   "aria/Menu": "Menú",
-  "aria/Message,": "Mensaje,",
   "aria/Message Actions": "Acciones del mensaje",
   "aria/Message from {{ user }},": "Mensaje de {{ user }},",
   "aria/Message Options": "Opciones de mensaje",
+  "aria/Message,": "Mensaje,",
   "aria/Mute User": "Silenciar usuario",
   "aria/Notifications": "Notificaciones",
   "aria/Open Attachment Selector": "Abrir selector de adjuntos",
@@ -237,6 +237,8 @@
   "Failed to end the poll due to {{reason}}": "No se pudo terminar la encuesta debido a {{reason}}",
   "Failed to jump to the first unread message": "Error al saltar al primer mensaje no leído",
   "Failed to leave channel": "No se pudo salir del canal",
+  "Failed to load channels": "No se pudieron cargar los canales",
+  "Failed to load more channels": "No se pudieron cargar más canales",
   "Failed to mark channel as read": "Error al marcar el canal como leído",
   "Failed to play the recording": "No se pudo reproducir la grabación",
   "Failed to retrieve location": "No se pudo obtener la ubicación",

src/i18n/fr.json

@@ -104,10 +104,10 @@
   "aria/Mark Message Unread": "Marquer comme non lu",
   "aria/Mark messages as read": "Marquer les messages comme lus",
   "aria/Menu": "Menu",
-  "aria/Message,": "Message,",
   "aria/Message Actions": "Actions du message",
   "aria/Message from {{ user }},": "Message de {{ user }},",
   "aria/Message Options": "Options du message",
+  "aria/Message,": "Message,",
   "aria/Mute User": "Mettre en sourdine",
   "aria/Notifications": "Notifications",
   "aria/Open Attachment Selector": "Ouvrir le sélecteur de pièces jointes",
@@ -237,6 +237,8 @@
   "Failed to end the poll due to {{reason}}": "Impossible de terminer le sondage en raison de {{reason}}",
   "Failed to jump to the first unread message": "Échec du saut vers le premier message non lu",
   "Failed to leave channel": "Impossible de quitter le canal",
+  "Failed to load channels": "Impossible de charger les canaux",
+  "Failed to load more channels": "Impossible de charger davantage de canaux",
   "Failed to mark channel as read": "Échec du marquage du canal comme lu",
   "Failed to play the recording": "Impossible de lire l'enregistrement",
   "Failed to retrieve location": "Impossible de récupérer l'emplacement",

src/i18n/hi.json

@@ -96,10 +96,10 @@
   "aria/Mark Message Unread": "अपठित चिह्नित करें",
   "aria/Mark messages as read": "संदेशों को पढ़ा हुआ चिह्नित करें",
   "aria/Menu": "मेन्यू",
-  "aria/Message,": "संदेश,",
   "aria/Message Actions": "संदेश कार्रवाइयाँ",
   "aria/Message from {{ user }},": "{{ user }} का संदेश,",
   "aria/Message Options": "संदेश विकल्प",
+  "aria/Message,": "संदेश,",
   "aria/Mute User": "उपयोगकर्ता म्यूट करें",
   "aria/Notifications": "सूचनाएं",
   "aria/Open Attachment Selector": "अटैचमेंट चयनकर्ता खोलें",
@@ -230,6 +230,8 @@
   "Failed to end the poll due to {{reason}}": "{{reason}} के कारण पोल समाप्त करने में विफल",
   "Failed to jump to the first unread message": "पहले अपठित संदेश पर जाने में विफल",
   "Failed to leave channel": "चैनल छोड़ने में विफल",
+  "Failed to load channels": "चैनल लोड करने में विफल",
+  "Failed to load more channels": "और चैनल लोड करने में विफल",
   "Failed to mark channel as read": "चैनल को पढ़ा हुआ चिह्नित करने में विफल।",
   "Failed to play the recording": "रेकॉर्डिंग प्ले करने में विफल",
   "Failed to retrieve location": "स्थान प्राप्त करने में विफल",

src/i18n/it.json

@@ -104,10 +104,10 @@
   "aria/Mark Message Unread": "Contrassegna come non letto",
   "aria/Mark messages as read": "Segna i messaggi come letti",
   "aria/Menu": "Menu",
-  "aria/Message,": "Messaggio,",
   "aria/Message Actions": "Azioni del messaggio",
   "aria/Message from {{ user }},": "Messaggio di {{ user }},",
   "aria/Message Options": "Opzioni di messaggio",
+  "aria/Message,": "Messaggio,",
   "aria/Mute User": "Mute utente",
   "aria/Notifications": "Notifiche",
   "aria/Open Attachment Selector": "Apri selettore allegati",
@@ -237,6 +237,8 @@
   "Failed to end the poll due to {{reason}}": "Impossibile terminare il sondaggio a causa di {{reason}}",
   "Failed to jump to the first unread message": "Impossibile passare al primo messaggio non letto",
   "Failed to leave channel": "Impossibile lasciare il canale",
+  "Failed to load channels": "Impossibile caricare i canali",
+  "Failed to load more channels": "Impossibile caricare altri canali",
   "Failed to mark channel as read": "Impossibile contrassegnare il canale come letto",
   "Failed to play the recording": "Impossibile riprodurre la registrazione",
   "Failed to retrieve location": "Impossibile recuperare la posizione",

src/i18n/ja.json

@@ -95,10 +95,10 @@
   "aria/Mark Message Unread": "未読としてマーク",
   "aria/Mark messages as read": "メッセージを既読にする",
   "aria/Menu": "メニュー",
-  "aria/Message,": "メッセージ,",
   "aria/Message Actions": "メッセージ操作",
   "aria/Message from {{ user }},": "{{ user }}さんからのメッセージ,",
   "aria/Message Options": "メッセージオプション",
+  "aria/Message,": "メッセージ,",
   "aria/Mute User": "ユーザーをミュート",
   "aria/Notifications": "通知",
   "aria/Open Attachment Selector": "添付ファイル選択を開く",
@@ -228,6 +228,8 @@
   "Failed to end the poll due to {{reason}}": "{{reason}}のためアンケートの終了に失敗しました",
   "Failed to jump to the first unread message": "最初の未読メッセージにジャンプできませんでした",
   "Failed to leave channel": "チャンネルの退出に失敗しました",
+  "Failed to load channels": "チャンネルの読み込みに失敗しました",
+  "Failed to load more channels": "さらにチャンネルを読み込めませんでした",
   "Failed to mark channel as read": "チャンネルを既読にすることができませんでした",
   "Failed to play the recording": "録音の再生に失敗しました",
   "Failed to retrieve location": "位置情報の取得に失敗しました",

src/i18n/ko.json

@@ -95,10 +95,10 @@
   "aria/Mark Message Unread": "읽지 않음으로 표시",
   "aria/Mark messages as read": "메시지를 읽음으로 표시",
   "aria/Menu": "메뉴",
-  "aria/Message,": "메시지,",
   "aria/Message Actions": "메시지 작업",
   "aria/Message from {{ user }},": "{{ user }}의 메시지,",
   "aria/Message Options": "메시지 옵션",
+  "aria/Message,": "메시지,",
   "aria/Mute User": "사용자 음소거",
   "aria/Notifications": "알림",
   "aria/Open Attachment Selector": "첨부 파일 선택기 열기",
@@ -228,6 +228,8 @@
   "Failed to end the poll due to {{reason}}": "{{reason}}(으)로 인해 투표 종료에 실패했습니다",
   "Failed to jump to the first unread message": "첫 번째 읽지 않은 메시지로 이동하지 못했습니다",
   "Failed to leave channel": "채널 나가기에 실패했습니다",
+  "Failed to load channels": "채널을 불러오지 못했습니다",
+  "Failed to load more channels": "채널을 더 불러오지 못했습니다",
   "Failed to mark channel as read": "채널을 읽음으로 표시하는 데 실패했습니다",
   "Failed to play the recording": "녹음을 재생하지 못했습니다",
   "Failed to retrieve location": "위치를 가져오지 못했습니다",

src/i18n/nl.json

@@ -96,10 +96,10 @@
   "aria/Mark Message Unread": "Markeren als ongelezen",
   "aria/Mark messages as read": "Markeer berichten als gelezen",
   "aria/Menu": "Menu",
-  "aria/Message,": "Bericht,",
   "aria/Message Actions": "Berichtacties",
   "aria/Message from {{ user }},": "Bericht van {{ user }},",
   "aria/Message Options": "Berichtopties",
+  "aria/Message,": "Bericht,",
   "aria/Mute User": "Gebruiker dempen",
   "aria/Notifications": "Meldingen",
   "aria/Open Attachment Selector": "Open bijlage selector",
@@ -229,6 +229,8 @@
   "Failed to end the poll due to {{reason}}": "Peiling kon niet worden beëindigd vanwege {{reason}}",
   "Failed to jump to the first unread message": "Niet gelukt om naar het eerste ongelezen bericht te springen",
   "Failed to leave channel": "Kanaal verlaten mislukt",
+  "Failed to load channels": "Kanalen konden niet worden geladen",
+  "Failed to load more channels": "Meer kanalen konden niet worden geladen",
   "Failed to mark channel as read": "Kanaal kon niet als gelezen worden gemarkeerd",
   "Failed to play the recording": "Kan de opname niet afspelen",
   "Failed to retrieve location": "Locatie kon niet worden opgehaald",

src/i18n/pt.json

@@ -104,10 +104,10 @@
   "aria/Mark Message Unread": "Marcar como não lida",
   "aria/Mark messages as read": "Marcar mensagens como lidas",
   "aria/Menu": "Menu",
-  "aria/Message,": "Mensagem,",
   "aria/Message Actions": "Ações da mensagem",
   "aria/Message from {{ user }},": "Mensagem de {{ user }},",
   "aria/Message Options": "Opções de mensagem",
+  "aria/Message,": "Mensagem,",
   "aria/Mute User": "Silenciar usuário",
   "aria/Notifications": "Notificações",
   "aria/Open Attachment Selector": "Abrir seletor de anexos",
@@ -237,6 +237,8 @@
   "Failed to end the poll due to {{reason}}": "Falha ao encerrar a enquete devido a {{reason}}",
   "Failed to jump to the first unread message": "Falha ao pular para a primeira mensagem não lida",
   "Failed to leave channel": "Falha ao sair do canal",
+  "Failed to load channels": "Falha ao carregar os canais",
+  "Failed to load more channels": "Falha ao carregar mais canais",
   "Failed to mark channel as read": "Falha ao marcar o canal como lido",
   "Failed to play the recording": "Falha ao reproduzir a gravação",
   "Failed to retrieve location": "Falha ao obter localização",

src/i18n/ru.json

@@ -113,10 +113,10 @@
   "aria/Mark Message Unread": "Отметить как непрочитанное",
   "aria/Mark messages as read": "Отметить сообщения как прочитанные",
   "aria/Menu": "Меню",
-  "aria/Message,": "Сообщение,",
   "aria/Message Actions": "Действия с сообщением",
   "aria/Message from {{ user }},": "Сообщение от {{ user }},",
   "aria/Message Options": "Параметры сообщения",
+  "aria/Message,": "Сообщение,",
   "aria/Mute User": "Отключить уведомления",
   "aria/Notifications": "Уведомления",
   "aria/Open Attachment Selector": "Открыть выбор вложений",
@@ -246,6 +246,8 @@
   "Failed to end the poll due to {{reason}}": "Не удалось завершить опрос из-за {{reason}}",
   "Failed to jump to the first unread message": "Не удалось перейти к первому непрочитанному сообщению",
   "Failed to leave channel": "Не удалось покинуть канал",
+  "Failed to load channels": "Не удалось загрузить каналы",
+  "Failed to load more channels": "Не удалось загрузить больше каналов",
   "Failed to mark channel as read": "Не удалось пометить канал как прочитанный",
   "Failed to play the recording": "Не удалось воспроизвести запись",
   "Failed to retrieve location": "Не удалось получить местоположение",