const ACCESS_KEY = "k_photos_token"
const REFRESH_KEY = "k_photos_refresh"

export function getTokens() {
  if (typeof window === "undefined") return { access: null, refresh: null }
  return {
    access: localStorage.getItem(ACCESS_KEY),
    refresh: localStorage.getItem(REFRESH_KEY),
  }
}

export function setTokens(access: string, refresh: string) {
  localStorage.setItem(ACCESS_KEY, access)
  localStorage.setItem(REFRESH_KEY, refresh)
}

export function clearTokens() {
  localStorage.removeItem(ACCESS_KEY)
  localStorage.removeItem(REFRESH_KEY)
}

export function getRoleFromToken(): string | null {
  const { access } = getTokens()
  if (!access) return null
  try {
    const payload = JSON.parse(atob(access.split(".")[1]))
    return payload.role ?? null
  } catch {
    return null
  }
}