text: /**
   * Copyright 2016 Google Inc. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  'use strict';
  
  const functions = require('firebase-functions');
  const admin = require('firebase-admin');
  admin.initializeApp();
  
  const express = require('express');
  const exphbs = require('express-handlebars');
  const app = express();
  const firebaseUser = require('./firebaseUser');
  
  app.engine('handlebars', exphbs({defaultLayout: 'main'}));
  app.set('view engine', 'handlebars');
  app.use(firebaseUser.validateFirebaseIdToken);
  
  app.get('/', (req, res) => {
    // @ts-ignore
    const user = req.user;
  
    functions.logger.log('Signed-in user:', user);
    return res.render('user', {
      user: user,
    });
  });
  
  // This HTTPS endpoint can only be accessed by your Firebase Users.
  // Requests need to be authorized by providing an `Authorization` HTTP header
  // with value `Bearer <Firebase ID Token>`.
  exports.app = functions.https.onRequest(app);
  