How to use google-cloud - 7 common examples

*     4. Verify that latestFetchDate is now the latest.
  *     5. Verify that you see "fetching latest table names" and additional
  *        message for fetching data.
  */

// Author: Eric Bidelman 

'use strict';

const path = require('path');
const fs = require('fs');
const gcloud = require('google-cloud');

const PROJECT_ID = 'lighthouse-viewer';
const CACHE_FILE = '.biqquery_cache.json';
const BigQuery = gcloud.bigquery({projectId: PROJECT_ID});


/**
 * Returns the original object with sorted keys.
 * @param {!Object} obj
 * @return {!Object}
 */
function orderKeys(obj) {
  const ordered = {};
  Object.keys(obj).sort().forEach(key => ordered[key] = obj[key]);
  return ordered;
}

class CacheFile {
  constructor(cacheFilename=CACHE_FILE) {
    this.file = path.join(__dirname, cacheFilename);

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var storage = gcloud.storage({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var bucket = storage.bucket(config.bucketName);

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, callback);
  }

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, (err, books) => callback(err, books, datastore.KEY));
  }

  function getUserBooks(userId, callback) {
    callback(new Error('books.getUserBooks [Not Yet Implemented]'));
  }

  function addBook(title, author, coverImageData, userId, callback) {
    if (coverImageData)
      return callback(new Error("books.addBook image saving Not Yet Implemented"));

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, (err, books) => callback(err, books, datastore.KEY));
  }

  function getUserBooks(userId, callback) {
    callback(new Error('books.getUserBooks [Not Yet Implemented]'));
  }

  function addBook(title, author, coverImageData, userId, callback) {
    if (coverImageData)
      return callback(new Error('books.addBook with image [Not Yet Implemented]'));

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var storage = gcloud.storage({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var bucket = storage.bucket(config.bucketName);

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, callback);
  }

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var storage = gcloud.storage({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var bucket = storage.bucket(config.bucketName);

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, callback);
  }

  function getUserBooks(userId, callback) {
    var query = datastore.createQuery(['Book']).filter('userId', '=', userId);
    datastore.runQuery(query, callback);
  }

module.exports = function(config) {

  var gcloud = require('google-cloud');

  var datastore = gcloud.datastore({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var storage = gcloud.storage({
    projectId: config.projectId,
    keyFilename: config.keyFilename
  });

  var bucket = storage.bucket(config.bucketName);

  function getAllBooks(callback) {
    var query = datastore.createQuery(['Book']);
    datastore.runQuery(query, callback);
  }

  function getUserBooks(userId, callback) {
    callback(new Error('books.getUserBooks [Not Yet Implemented]'));
  }

  function addBook(title, author, coverImageData, userId, callback) {