Function executeSummary

sum/sum.ts:727–787

(task: SummaryTask)

    // 构建消息文本，包含文件信息
    let textContent = message.message || "";
    const fileName = extractFileName(message);
    if (fileName) {
      textContent = textContent
        ? `${textContent} [文件: ${fileName}]`
        : `[文件: ${fileName}]`;
    }

    if (textContent) {
      messageData.push({
        text: `[${time}] ${sender}: ${textContent}`,
        content: message.message || "",
        telegramLink: link,
        urls,
        fileName: fileName || undefined,
      });
    }
  }

  return messageData.reverse();
}

// 获取群消息（按时间范围）
async function getGroupMessagesByTime(
  chatId: string,
  hours: number,
): Promise<MessageData[]> {
  const client = await getGlobalClient();
  if (!client) throw new Error("Telegram 客户端未初始化");

  const now = Math.floor(Date.now() / 1000);
  const startTime = now - hours * 3600;

  const messages = await safeGetMessages(client, chatId, { limit: 100 });

  // 获取群组 username（如果有）
  let chatUsername: string | undefined;
  try {
    const entity = await client.getEntity(chatId);
    chatUsername = (entity as any).username;
  } catch (e) {
    // 忽略错误，使用私有链接格式
  }

  const messageData: MessageData[] = [];
  for (const msg of messages) {
    const message = msg as any;
    if (message.date < startTime) continue;
    if (!message.message && !message.media) continue;

    const sender =
      message.sender?.firstName || message.sender?.username || "未知用户";
    const time = formatDate(new Date(message.date * 1000));
    const link = buildMessageLink(chatId, message.id, chatUsername);
    const urls = extractUrlsFromEntities(message);

    // 构建消息文本，包含文件信息
    let textContent = message.message || "";
    const fileName = extractFileName(message);