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path: root/frontend/src/main.js
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import 'regenerator-runtime/runtime';
import axios from 'axios';
import $ from 'jquery';
import cookie from 'js-cookie';

const LOGIN_API_URL = process.env.LOGIN_API_URL;
const POSTGREST_API_URL = process.env.POSTGREST_API_URL;
const GOOGLE_OAUTH_ID = process.env.GOOGLE_OAUTH_ID;

$(document).ready(function() {
  const displayName = cookie.get('displayName');
  if (!displayName) {
    // not logged in
    $('button#logout').css('display', 'none');
    $('div#loginWidgets').css('display', 'initial');
    $('span#displayName').text('');
  } else {
    // logged in
    $('button#logout').css('display', 'initial');
    $('span#displayName').text(`Logged in as ${displayName}`);
  }
});

$('button#logout').click(function(event) {
  event.preventDefault();
  logout();
});

// fetch data from postgrest
$('button#fetchTodosBtn').click(async function() {
  $('div#todos').html('');
  const jwt = cookie.get('jwt');
  try {
    const resp = await axios.get(`${POSTGREST_API_URL}/todos`, {
      headers: { Authorization: `Bearer ${jwt}` },
    });
    const todos = resp.data;
    if (todos.length === 0) {
      $('div#todos').html('No TODOs.');
    } else {
      todos.forEach(todo => {
        $('div#todos').append(`<div>id: ${todo.id}, task: ${todo.task}</div>`);
      });
    }
  } catch (err) {
    console.error(err);
    $('div#todos').html(String(err));
  }
});

const finalizeLogin = user => {
  const { jwt, displayName } = user;
  cookie.set('jwt', jwt);
  cookie.set('displayName', displayName);
  window.location.reload();
};

const logout = () => {
  cookie.remove('jwt');
  cookie.remove('displayName');
  window.location.reload();
};

$('form#loginForm').submit(async function(event) {
  event.preventDefault();
  const username = $(this).find('input#username').val();
  const password = $(this).find('input#password').val();
  try {
    const resp = await axios.post(`${LOGIN_API_URL}/login/userpass`, { username, password });
    const user = resp.data;
    finalizeLogin(user);
  } catch (err) {
    logout();
    alert(err);
  }
});

$('button#google-login').click(async function() {
  const GoogleAuth = gapi.auth2.getAuthInstance();
  try {
    const googleUser = await GoogleAuth.signIn();
    const authResponse = googleUser.getAuthResponse(true);
    const resp = await axios.post(`${LOGIN_API_URL}/login/google`, { accessToken: authResponse.access_token });
    const user = resp.data;
    finalizeLogin(user);
  } catch (err) {
    logout();
    alert(err);
  }
});

window.gapiInit = () => {
  console.log('gapiInit');
  gapi.load('auth2', function() {
    gapi.auth2.init({
      client_id: GOOGLE_OAUTH_ID,
    });
  });
};