/* xeslint-disable */
import decode from "jwt-decode";
import initialize from "./initialize";

export function processLogin(response) {
  return new Promise(function(resolve, reject) {
    //check there is a response of some kind
    if (!response) {
      window.$gz.store.commit("logItem", "auth::processLogin -> no response");
      return reject();
    }

    //is there an error?
    if (response.error) {
      return reject(response.error);
    }

    //is token present?
    if (!response.data || !response.data.token) {
      window.$gz.store.commit(
        "logItem",
        "auth::processLogin -> response contains no data"
      );
      return reject();
    }
    const token = decode(response.data.token);

    if (!token || !token.iss) {
      window.$gz.store.commit(
        "logItem",
        "auth::processLogin -> response token empty"
      );
      return reject();
    }

    if (token.iss != "ayanova.com") {
      window.$gz.store.commit(
        "logItem",
        "auth::processLogin -> token invalid (iss): " + token.iss
      );
      return reject();
    }

    //ensure the store is clean first in case we didn't come here from a clean logout
    window.$gz.store.commit("logout");
    sessionStorage.clear(); //clear all temporary session storage data

    //Put app relevant items into vuex store so app can use them
    window.$gz.store.commit("login", {
      apiToken: response.data.token,
      authenticated: true,
      userId: Number(token.id),
      userName: response.data.name,
      roles: response.data.roles,
      userType: response.data.usertype,
      dlt: response.data.dlt
    });

    //Initialize the application
    initialize().then(() => {
      window.$gz.store.commit(
        "logItem",
        "auth::processLogin -> User " + token.id + " logged in"
      );
      resolve(true);
    });
  });
}

export function processLogout() {
  if (window.$gz.store.state.authenticated) {
    window.$gz.store.commit(
      "logItem",
      "auth::processLogout -> User logged out"
    );
  }
  window.$gz.store.commit("logout");
  sessionStorage.clear(); //clear all temporary session storage data
}

export function isLoggedIn() {
  //const token = getToken();
  return (
    !!window.$gz.store.state.apiToken &&
    !isTokenExpired(window.$gz.store.state.apiToken)
  );
}

function getTokenExpirationDate(encodedToken) {
  const token = decode(encodedToken);
  if (!token.exp) {
    return null;
  }

  const date = new Date(0);
  date.setUTCSeconds(token.exp);

  return date;
}

function isTokenExpired(token) {
  const expirationDate = getTokenExpirationDate(token);
  return expirationDate < new Date();
}