Function parseFileInfo

packages/parser/src/index.ts:202–253

(
  filePath: string,
  onProgress?: (progress: ParseProgress) => void
)

 * 用于预览和合并工具
 */
export async function parseFileInfo(
  filePath: string,
  onProgress?: (progress: ParseProgress) => void
): Promise<{
  name: string
  format: string
  platform: string
  messageCount: number
  memberCount: number
  fileSize: number
}> {
  const feature = sniffer.sniff(filePath)
  if (!feature) {
    throw new Error(`无法识别文件格式: ${filePath}`)
  }

  let name = '未知群聊'
  let platform = feature.platform
  let messageCount = 0
  let memberCount = 0

  for await (const event of parseFile({ filePath, onProgress })) {
    switch (event.type) {
      case 'meta':
        name = event.data.name
        platform = event.data.platform
        break
      case 'members':
        memberCount += event.data.length
        break
      case 'messages':
        messageCount += event.data.length
        break
      case 'progress':
        onProgress?.(event.data)
        break
      case 'error':
        throw event.data
    }
  }

  const fileSize = fs.statSync(filePath).size

  return {
    name,
    format: feature.name,
    platform,
    messageCount,
    memberCount,
    fileSize,
  }
}

/**
 * Scan a directory for a recognizable entry file (e.g. manifest.json for chunked formats).