// 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 = "/login";
}

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,
};