Function findUserInChannelParticipants

admin_board/admin_board.ts:1156–1215

(
  target: TargetChat,
  identifier: string,
)

  if (username) {
    try {
      const users = await client.getParticipants(target.entity, {
        search: username,
        showTotal: false,
      });
      const matched = users.find((user): user is Api.User => {
        return (
          user instanceof Api.User &&
          (user.username || "").toLowerCase() === username
        );
      });
      if (matched) return matched;
    } catch {
      // Ignore and continue to other fallbacks.
    }
  }

  if (!isNumeric) return undefined;

  const inputChannel = await client.getInputEntity(target.entity as any);
  let offset = 0;
  const limit = 200;

  for (let index = 0; index < 5; index++) {
    const result: any = await client.invoke(
      new Api.channels.GetParticipants({
        channel: inputChannel as any,
        filter: new Api.ChannelParticipantsRecent(),
        offset,
        limit,
        hash: 0 as any,
      }),
    );

    const users: Api.User[] = (result?.users || []).filter(
      (user: any): user is Api.User => user instanceof Api.User,
    );
    const matched = users.find(
      (user) => String(user.id) === String(Number(identifier)),
    );
    if (matched) return matched;

    const participants: any[] = result?.participants || [];
    if (!participants.length) break;
    offset += participants.length;
  }

  return undefined;
}

async function resolveUserForSeatAction(
  target: TargetChat,
  identifier: string,
): Promise<Api.User | undefined> {
  const client = await getGlobalClient();
  if (!client) throw new Error("Telegram 客户端未初始化");

  const trimmed = identifier.trim();
  if (!trimmed) return undefined;