function handleTruncation()

in websocket-server/src/sessionManager.ts [211:240]

• 26 lines of code
• 9 McCabe index (conditional complexity)

function handleTruncation() {
  if (
    !session.lastAssistantItem ||
    session.responseStartTimestamp === undefined
  )
    return;

  const elapsedMs =
    (session.latestMediaTimestamp || 0) - (session.responseStartTimestamp || 0);
  const audio_end_ms = elapsedMs > 0 ? elapsedMs : 0;

  if (isOpen(session.modelConn)) {
    jsonSend(session.modelConn, {
      type: "conversation.item.truncate",
      item_id: session.lastAssistantItem,
      content_index: 0,
      audio_end_ms,
    });
  }

  if (session.twilioConn && session.streamSid) {
    jsonSend(session.twilioConn, {
      event: "clear",
      streamSid: session.streamSid,
    });
  }

  session.lastAssistantItem = undefined;
  session.responseStartTimestamp = undefined;
}