Function handleSendChannelMessage

desktop/src/testing/e2eBridge.ts:6916–7063

(
  args: {
    channelId: string;
    content: string;
    parentEventId?: string | null;
    kind?: number | null;
    mentionPubkeys?: string[];
    mediaTags?: string[][] | null;
    emojiTags?: string[][] | null;
  },
  config: E2eConfig | undefined,
)

}

async function handleSendChannelMessage(
  args: {
    channelId: string;
    content: string;
    parentEventId?: string | null;
    kind?: number | null;
    mentionPubkeys?: string[];
    mediaTags?: string[][] | null;
    emojiTags?: string[][] | null;
  },
  config: E2eConfig | undefined,
): Promise<RawSendChannelMessageResponse> {
  const kind = args.kind ?? 9;
  const sendMessageDelayMs = config?.mock?.sendMessageDelayMs ?? 0;
  if (sendMessageDelayMs > 0) {
    await new Promise((resolve) =>
      window.setTimeout(resolve, sendMessageDelayMs),
    );
  }

  // NIP-92 imeta attachments. The real relay echoes these back on the stored
  // event; mirror that here so attachment renderers (FileCard, images, video)
  // have the imeta tags they key on. `null`/empty → no extra tags.
  const mediaTags = args.mediaTags ?? [];
  // NIP-30 custom-emoji tags ride their own validated arg server-side; the
  // relay echoes them back on the stored event too, so mirror that here so the
  // emoji renderer keeps resolving `:shortcode:` after the round-trip.
  const emojiTags = args.emojiTags ?? [];
  // Both kinds end up on the stored event's tag set, just like the real relay.
  const extraTags = [...mediaTags, ...emojiTags];
  const identity = getIdentity(config);
  if (!identity) {
    const createdAt = Math.floor(Date.now() / 1000);
    const mockPubkey = getMockMemberPubkey(config);

    if (!args.parentEventId) {
      const event = createMockEvent(kind, args.content, [
        ...buildTopLevelMessageTags(
          args.channelId,
          args.mentionPubkeys,
          mockPubkey,
        ),
        ...extraTags,
      ]);
      recordMockMessage(args.channelId, event);
      emitMockLiveEvent(args.channelId, event);

      return {
        event_id: event.id,
        parent_event_id: null,
        root_event_id: null,
        depth: 0,
        created_at: createdAt,
      };
    }

    const history = getMockMessageStore(args.channelId);
    const parentEvent = history.find(