파일 업로드 서비스

export async function uploadAvatar(userId: string, file: File) {
  // 검증
  const MAX = 5 * 1024 * 1024  // 5MB
  const ALLOWED = ['image/jpeg', 'image/png', 'image/webp']

  if (file.size > MAX) throw new Error('File too large')
  if (!ALLOWED.includes(file.type)) throw new Error('Invalid type')

  const ext = file.name.split('.').pop()
  const path = `${userId}/avatar.${ext}`

  await supabase.storage.from('avatars').upload(path, file, { upsert: true })
  const { data: { publicUrl } } = supabase.storage.from('avatars').getPublicUrl(path)

  await supabase.from('profiles').update({ avatar_url: publicUrl }).eq('id', userId)
  return publicUrl
}