some queries results

MongoDBSeeding.js

const fake = require('faker');
const now = require('performance-now');
const fs = require('fs');
const { Book } = require('./index');

let fakeData;

const CreateFakeDocument = function CreateFakeDocument(i) {
  const book = {};

  // initiate a bunch of new book info
  book.id = i;
  book.title = fake.random.words(3);
  book.author = fake.name.findName();
  book.description = fake.lorem.paragraphs();
  book.ratings = {
    five: fake.random.number(),
    four: fake.random.number(),
    three: fake.random.number(),
    two: fake.random.number(),
    one: fake.random.number(),
  };
  book.reviews = fake.random.number();
  book.links = {
    kindle: fake.internet.url(),
    amazon: fake.internet.url(),
    stores: {
      audible: fake.internet.url(),
      barnesAndNoble: fake.internet.url(),
      walmart: fake.internet.url(),
      apple: fake.internet.url(),
      google: fake.internet.url(),
      abebooks: fake.internet.url(),
      bookDepository: fake.internet.url(),
      indigo: fake.internet.url(),
      alibris: fake.internet.url(),
      betterWorldBooks: fake.internet.url(),
      indieBound: fake.internet.url(),
    },
  };
  book.type = fake.random.word();
  book.pages = fake.random.number({ max: 3000 });
  book.publishDate = fake.date.past();
  book.publisher = fake.company.companyName();
  book.metadata = {
    originalTitle: book.title,
    isbn: fake.random.number(),
    isbn13: fake.random.number(),
    language: 'English',
  };
  book.image = 'http://lorempixel.com/480/640/abstract/';
  if (i % 2 === 0) {
    book.metadata.series = {
      name: fake.random.words(2),
      url: fake.internet.url(),
    };
  }
  return book;
};

const start = now();
const wstream = fs.createWriteStream('./books.json');


// Write the data to the supplied writable stream one million times.
// Be attentive to back-pressure.
const writeOneMillionTimes = function writeOneMillionTimes(writer, encoding, callback) {
  let i = -1;
  function write() {
    let ok = true;
    do {
      i += 1;
      if (i === 9999999) {
        // last time!
        writer.write(JSON.stringify(CreateFakeDocument(i)), encoding, callback);
      } else {
        // See if we should continue, or wait.
        // Don't pass the callback, because we're not done yet.
        if (i % 10000 === 0) {
          console.log(`we have generated ${i} documents`);
        }

        ok = writer.write(JSON.stringify(CreateFakeDocument(i)), encoding);
      }
    } while (i < 9999999 && ok);
    if (i < 9999999) {
      // had to stop early!
      // write some more once it drains
      writer.once('drain', write);
    }
  }
  write();
};

writeOneMillionTimes(wstream, 'utf-8', () => {
  console.log(`the whole process took ${Math.floor((now() - start).toFixed(0) / 1000)} seconds`);
});

module.exports = {
  fakeData,
  CreateFakeDocument,
};