isMessageStreaming ? of()

in apps/chat/src/store/conversations/conversations.epics.ts [2153:2194]
38 lines of code
7 McCabe index (conditional complexity)

        isMessageStreaming ? of(ConversationsActions.playbackStop()) : EMPTY,
        ...selectedConversations.map((conv) => {
          if (!conv.playback) {
            return EMPTY;
          }
          const activePlaybackIndex = conv.playback.activePlaybackIndex;
          const activeIndex = isMessageStreaming
            ? activePlaybackIndex - 1
            : activePlaybackIndex - 2;
          const updatedMessages = conv.messages.slice(0, activeIndex);

          const activeAssistantIndex =
            activePlaybackIndex > 2 ? activePlaybackIndex - 3 : 0;

          const assistantMessage: Message | undefined =
            conv.messages[activeAssistantIndex];

          const model = assistantMessage?.model
            ? { ...conv.model, ...assistantMessage.model }
            : conv.model;

          const { prompt, temperature, selectedAddons, assistantModelId } =
            assistantMessage?.settings ? assistantMessage.settings : conv;
          return of(
            ConversationsActions.updateConversation({
              id: conv.id,
              values: {
                messages: updatedMessages,
                isMessageStreaming: false,
                model,
                prompt,
                temperature: temperature,
                selectedAddons: selectedAddons,
                assistantModelId: assistantModelId,
                playback: {
                  ...conv.playback,
                  activePlaybackIndex: activeIndex,
                },
              },
            }),
          );
        }),