const authKey = 'Authorization'
const expireAt = 'Authorization-Expire-At'

function setExpire(expire) {
  sessionStorage.setItem(expireAt, new Date().getTime() + expire * 1000)
}

// 是否过期
function isExpire() {
  const expire = sessionStorage.getItem(expireAt)
  if (expire) {
    return Number(expire) <= new Date().getTime()
  }
  return true
}

export function getToken() {
  if (isExpire()) {
    sessionStorage.removeItem(expireAt)
    sessionStorage.removeItem(authKey)
    return null
  }
  return sessionStorage.getItem(authKey)
}

export function setToken(token, expire) {
  setExpire(expire)
  return sessionStorage.setItem(authKey, token)
}

export function removeToken() {
  return sessionStorage.removeItem(authKey)
}