Function buildMockChannelThreadSummary

desktop/src/testing/e2eBridge.ts:3769–3813

(
  channelId: string,
  root: RelayEvent,
  events: RelayEvent[],
)

}

function buildMockChannelThreadSummary(
  channelId: string,
  root: RelayEvent,
  events: RelayEvent[],
): RelayEvent | null {
  const replies = events.filter((event) => {
    const thread = getThreadReferenceFromTags(event.tags);
    return thread.rootEventId === root.id;
  });
  if (replies.length === 0) return null;

  const directReplies = replies.filter(
    (event) => getThreadReferenceFromTags(event.tags).parentEventId === root.id,
  );
  const participants = [
    ...new Set(
      replies
        .sort(
          (left, right) =>
            right.created_at - left.created_at ||
            left.id.localeCompare(right.id),
        )
        .map((event) => event.pubkey),
    ),
  ].slice(0, 10);
  const lastReplyAt = Math.max(...replies.map((event) => event.created_at));
  return {
    id: `mock-window-summary-${root.id}`,
    pubkey: DEFAULT_MOCK_IDENTITY.pubkey,
    created_at: Math.floor(Date.now() / 1000),
    kind: KIND_CHANNEL_THREAD_SUMMARY,
    tags: [
      ["e", root.id],
      ["d", root.id],
      ["h", channelId],
    ],
    content: JSON.stringify({
      reply_count: directReplies.length,
      descendant_count: replies.length,
      last_reply_at: lastReplyAt,
      participants,
    }),
    sig: "mocksig".repeat(20).slice(0, 128),
  };
}

/**
 * Build the single kind-39006 bounds event a channel window response must carry.