// authen with keycloak client
import Keycloak from 'keycloak-js'

const ACCESS_TOKEN = 'BMAHRIS_KEYCLOAK_IDENTITY'
const REFRESH_TOKEN = 'BMAHRIS_KEYCLOAK_REFRESH'
const keycloakConfig = {
  url: import.meta.env.VITE_URL_KEYCLOAK,
  realm: import.meta.env.VITE_REALM_KEYCLOAK,
  clientId: import.meta.env.VITE_CLIENTID_KEYCLOAK,
  clientSecret: import.meta.env.VITE_CLIENTSECRET_KEYCLOAK,
}

const keycloak = new Keycloak(keycloakConfig)

async function kcAuthen(access_token: string, refresh_token: string) {
  await setCookie(ACCESS_TOKEN, access_token, 1)
  await setCookie(REFRESH_TOKEN, refresh_token, 1)
  window.location.href = '/'
}

async function kcLogout() {
  await deleteCookie(ACCESS_TOKEN)
  await deleteCookie(REFRESH_TOKEN)
  if (keycloak.authenticated !== undefined) {
    keycloak.logout()
  }
  window.location.href = '/login'
}

async function getToken() {
  return {
    token: getCookie(ACCESS_TOKEN),
    refresh_token: getCookie(REFRESH_TOKEN),
  }
}

function setCookie(name: string, value: any, days: number) {
  let expires = ''
  if (days) {
    const date = new Date()
    date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000)
    expires = '; expires=' + date.toUTCString()
  }
  document.cookie = name + '=' + (value || '') + expires + '; path=/'
}

function getCookie(name: string) {
  const nameEQ = name + '='
  const ca = document.cookie.split(';')
  for (let i = 0; i < ca.length; i++) {
    let c = ca[i]
    while (c.charAt(0) == ' ') c = c.substring(1, c.length)
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length)
  }
  return null
}

function deleteCookie(name: string) {
  document.cookie = `${name}=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;`
}

export default keycloak
export {
  keycloakConfig,
  getToken,
  kcAuthen,
  kcLogout,
  ACCESS_TOKEN,
  REFRESH_TOKEN,
}