// 新消息使用结构化 attachment_refs；这里只解析旧客户端与存量消息的正文标记。
const USER_ATTACHMENT_RE = /^\[(用户上传的参考图|用户上传的文件)\]\s+(.+?)\s*$/;

export function parseUserAttachments(content) {
  const attachments = [];
  const bodyLines = [];
  for (const line of String(content || "").split("\n")) {
    const match = line.match(USER_ATTACHMENT_RE);
    if (!match) {
      bodyLines.push(line);
      continue;
    }
    attachments.push({
      path: match[2],
      kind: match[1] === "用户上传的参考图" ? "image" : "file",
    });
  }
  return { content: bodyLines.join("\n").trim(), attachments };
}