export function parseYencMeta(buffer: Buffer): { header: Record<string, any>; crc32?: string } {
  const text = buffer.toString('latin1')
  const lines = text.split(/\\r?\\n/)

  const header: Record<string, any> = {}
  let crc32: string | undefined

  for (const line of lines) {
    if (line.startsWith('=ybegin')) {
      const parts = line.split(' ')
      parts.forEach((part) => {
        if (part.includes('=')) {
          const [key, value] = part.split('=')
          if (key === 'name') {
            header[key] = value.trim()
          } else {
            header[key] = parseInt(value, 10)
          }
        }
      })
    } else if (line.startsWith('=ypart')) {
      const match = /begin=(\d+)/.exec(line)
      if (match) {
        header.partBegin = parseInt(match[1], 10)
      }
    } else if (line.startsWith('=yend')) {
      const match = /crc32=([a-fA-F0-9]+)/.exec(line)
      if (match) {
        crc32 = match[1]
      }
      break // End of yenc data
    }
  }

  return { header, crc32 }
}