export function statusMessageId(payload) {
  return `status-${payload.turnId || payload.sessionId || 'current'}`;
}

export function larkCliActivityLabel(value) {
  const text = String(value || '').replace(/\s+/g, ' ').trim();
  const lower = text.toLowerCase();
  if (!lower.includes('lark-cli')) {
    return '';
  }

  if (/\bauth\b/.test(lower)) {
    return '确认飞书授权';
  }

  if (/\bsheets?\b/.test(lower)) {
    if (/\+create|\bcreate\b/.test(lower)) {
      return '创建表格';
    }
    if (/\+append|\bappend\b/.test(lower)) {
      return '追加表格数据';
    }
    if (/\+write|\bwrite\b/.test(lower)) {
      return '写入表格数据';
    }
    if (/\+find|\bfind\b/.test(lower)) {
      return '查找表格内容';
    }
    if (/\+replace|\breplace\b/.test(lower)) {
      return '替换表格内容';
    }
    if (/\+export|\bexport\b/.test(lower)) {
      return '导出表格';
    }
    if (/title|rename|\bpatch\b|\bupdate\b|spreadsheet\.meta/.test(lower)) {
      return '修改表名';
    }
    if (/\+read|\bread\b|\bget\b|\bmeta\b/.test(lower)) {
      return '读取表格信息';
    }
    return '操作表格';
  }

  if (/\bslides?\b/.test(lower)) {
    if (/\+create|\bcreate\b/.test(lower)) {
      return '创建 PPT';
    }
    if (/\+update|\bupdate\b|\breplace\b|\bpatch\b/.test(lower)) {
      return '修改 PPT';
    }
    if (/\+read|\bread\b|\bget\b|\bxml_presentations\b/.test(lower)) {
      return '读取 PPT';
    }
    return '操作 PPT';
  }

  if (/\bdocs?\b/.test(lower)) {
    if (/\+create|\bcreate\b/.test(lower)) {
      return '创建文档';
    }
    if (/\+update|\bupdate\b|\bappend\b|\breplace\b|\bpatch\b/.test(lower)) {
      return '修改文档';
    }
    if (/\+search|\bsearch\b/.test(lower)) {
      return '搜索文档';
    }
    if (/\+fetch|\bread\b|\bget\b|\bfetch\b/.test(lower)) {
      return '读取文档';
    }
    return '操作文档';
  }

  if (/\bdrive\b/.test(lower)) {
    if (/\+import|\bimport\b/.test(lower)) {
      return '导入文件';
    }
    if (/\+upload|\bupload\b/.test(lower)) {
      return '上传文件';
    }
    if (/\+download|\bdownload\b/.test(lower)) {
      return '下载文件';
    }
    if (/\+delete|\bdelete\b|\btrash\b/.test(lower)) {
      return '删除文件';
    }
    if (/\+move|\bmove\b/.test(lower)) {
      return '移动文件';
    }
    if (/title|rename|\bpatch\b|\bupdate\b/.test(lower)) {
      return '修改文件名';
    }
    if (/\+search|\bsearch\b/.test(lower)) {
      return '搜索云空间';
    }
    return '操作云空间';
  }

  return '';
}

export function shellCommandActivityLabel(value) {
  const text = String(value || '').replace(/\s+/g, ' ').trim();
  const lower = text.toLowerCase();
  if (!text) {
    return '';
  }
  if (/\b(npm|pnpm|yarn|bun)\s+(run\s+)?build\b|\bvite\s+build\b|\bwebpack\b|\brollup\b/.test(lower)) {
    return '构建前端';
  }
  if (/\b(npm|pnpm|yarn|bun)\s+(run\s+)?smoke\b|\bsmoke\.mjs\b/.test(lower)) {
    return '运行冒烟检查';
  }
  if (/\b(npm|pnpm|yarn|bun)\s+(run\s+)?test\b|\bpytest\b|\bvitest\b|\bjest\b|\bmvn\b.*\btest\b|\bcargo\s+test\b/.test(lower)) {
    return '运行测试';
  }
  if (/\bnode\s+--check\b|\btsc\b|\beslint\b|\bbiome\b|\bprettier\b|\bflake8\b|\bmypy\b/.test(lower)) {
    return '检查代码';
  }
  if (/\bgit\s+(status|diff|show|log|ls-files)\b/.test(lower)) {
    return '检查改动';
  }
  if (/\b(get-content|select-string|rg|findstr|grep)\b/.test(lower)) {
    return /\b(select-string|rg|findstr|grep)\b/.test(lower) ? '搜索代码' : '读取文件';
  }
  if (/\b(get-childitem|ls|dir)\b/.test(lower)) {
    return '查看文件';
  }
  if (/\b(start-process|node\s+server\/index\.js|node\s+server\\index\.js)\b/.test(lower)) {
    return '启动服务';
  }
  return '';
}

export function meaningfulActivityLabel(payload, rawLabel, detail) {
  const source = [payload.command, detail, rawLabel, payload.output]
    .filter(Boolean)
    .join(' ');
  const larkLabel = larkCliActivityLabel(source);
  if (larkLabel) {
    return larkLabel;
  }
  const commandLabel = shellCommandActivityLabel(payload.command || detail);
  if (commandLabel) {
    return commandLabel;
  }

  if (payload.kind === 'agent_message' || payload.kind === 'message' || payload.kind === 'reasoning') {
    return briefActivityLabel(rawLabel || payload.content || detail);
  }

  if (isGenericActivityLabel(rawLabel)) {
    return '';
  }

  return rawLabel && rawLabel.length <= 18 ? rawLabel : '';
}

export function isGenericActivityLabel(value) {
  const text = String(value || '').replace(/\s+/g, ' ').trim();
  if (!text) {
    return true;
  }
  return /^(正在思考中?|思考完成|正在处理|正在回复|正在整理回复|正在准备任务|正在修改并验证|正在执行命令|命令已完成|命令完成|命令执行完成|执行完成|工具调用完成|正在调用工具|工具调用失败|工具已完成|计划已更新|正在规划|任务已完成|已完成|完成|失败)$/i.test(text);
}

export function activityStepFromPayload(payload, fallbackKind = 'status') {
  const rawLabel = String(payload.label || payload.content || '').replace(/\s+/g, ' ').trim();
  const detail = String(payload.detail || payload.error || '').replace(/\s+/g, ' ').trim();
  const label = meaningfulActivityLabel(payload, rawLabel, detail);
  if (!label) {
    return null;
  }
  return {
    id: payload.messageId || `${statusMessageId(payload)}-${payload.kind || fallbackKind}-${label || payload.status || 'step'}`,
    kind: payload.kind || fallbackKind,
    label,
    status: payload.status || 'running',
    detail,
    command: payload.command || '',
    output: payload.output || '',
    error: payload.error || '',
    fileChanges: payload.fileChanges || [],
    timestamp: payload.timestamp || new Date().toISOString()
  };
}

export function briefActivityLabel(value, fallback = '正在处理') {
  const text = String(value || '').replace(/\s+/g, ' ').trim();
  if (!text) {
    return '';
  }
  if (/授权|登录|连接/.test(text)) {
    return '确认授权';
  }
  if (/记忆|skill|技能|能力|scope|权限/i.test(text)) {
    return '';
  }
  if (/搜索|查找|定位/.test(text)) {
    return '查找文件';
  }
  if (/创建|新建|生成/.test(text)) {
    return '创建文件';
  }
  if (/改名|重命名|修改标题|rename/i.test(text) && /验证|确认|检查|读取/.test(text)) {
    return '修改并验证';
  }
  if (/改名|重命名|修改标题|rename/i.test(text)) {
    return '修改标题';
  }
  if (/读取|获取|标题|内容/.test(text)) {
    return '读取内容';
  }
  if (/修改|更新|写入|追加|替换|编辑/.test(text)) {
    return '修改内容';
  }
  if (/上传|导入/.test(text)) {
    return '上传文件';
  }
  if (/下载|导出/.test(text)) {
    return '导出文件';
  }
  if (/删除|移除/.test(text)) {
    return '删除文件';
  }
  if (/验证|确认|检查/.test(text)) {
    return '验证结果';
  }
  if (/命令|lark-cli|PowerShell|shell|执行/i.test(text)) {
    return '';
  }
  return text.length > 18 ? '' : text;
}