import { clearAuthSession, getAccessToken } from '@/utils/auth-storage'

export const LOGIN_PAGE = '/pages/Login/user-login/index'

let redirectingToLogin = false

export function isLoggedIn() {
  return Boolean(getAccessToken())
}

/** 未登录时跳转登录页，返回是否已登录 */
export function ensureLoggedIn(showToast = true) {
  if (isLoggedIn())
    return true

  if (showToast)
    uni.showToast({ title: '请先登录', icon: 'none' })

  redirectToLogin()
  return false
}

/** 登录态失效（如接口返回 401）时清除会话并跳转登录页 */
export function handleUnauthorized(message = '登录已过期，请重新登录') {
  if (redirectingToLogin)
    return

  redirectingToLogin = true
  clearAuthSession()
  uni.showToast({ title: message, icon: 'none' })
  redirectToLogin()
}

function redirectToLogin() {
  uni.reLaunch({
    url: LOGIN_PAGE,
    complete: () => {
      redirectingToLogin = false
    },
  })
}