reseed.js

/* eslint-disable camelcase */
const faker = require('faker');
const fs = require('fs');

const pictures = [
  'https://bit.ly/3l356cA',
  'https://bit.ly/3iqXxuO',
  'https://bit.ly/3l0pong',
  'https://bit.ly/3ipLE8n',
  'https://bit.ly/33ozWXh',
  'https://bit.ly/3jqOuLG',
  'https://bit.ly/3nbbbWo',
  'https://bit.ly/2SoZQ6M',
  'https://bit.ly/3iy13DP',
  'https://bit.ly/34ijEyy',
  'https://bit.ly/34nOiGA',
  'https://bit.ly/30tsFU8',
  'https://bit.ly/2GiWgc0',
  'https://bit.ly/33m9UnE',
  'https://bit.ly/2SjUcTN',
  'https://bit.ly/36qiN1d',
  'https://bit.ly/3nee0WQ',
  'https://bit.ly/34hEXjz',
  'https://bit.ly/2GpZr1n',
  'https://bit.ly/30p92ww',
  'https://bit.ly/36qThZO',
  'https://bit.ly/3nctXg9',
  'https://bit.ly/3lcl8kL',
  'https://bit.ly/2SnzPoF',
  'https://bit.ly/36qTg8c',
  'https://bit.ly/30r5V7g',
  'https://bit.ly/33pBvEh',
  'https://bit.ly/3jta4is',
  'https://bit.ly/36r6mlP',
  'https://bit.ly/30tcFla',
  'https://bit.ly/2EUQVXT',
  'https://bit.ly/3jqISkr',
  'https://bit.ly/3l8JOul',
  'https://bit.ly/3l84thZ',
  'https://bit.ly/3iqWgE2',
  'https://bit.ly/3cWeBb0',
  'https://bit.ly/2HSScQn',
  'https://bit.ly/34cX1LC',
  'https://bit.ly/2SirBy7',
  'https://bit.ly/34iYQHd',
  'https://bit.ly/33mYRKM',
  'https://bit.ly/30u7qSf',
  'https://bit.ly/3jr73zc',
  'https://bit.ly/2GbS0LG',
  'https://bit.ly/3cQNWw2',
  'https://bit.ly/2SrCwoZ',
  'https://bit.ly/2Gk6ZTH',
  'https://bit.ly/3cPOG4G',
  'https://bit.ly/3irGVD7',
  'https://bit.ly/3ncCTC7',
  'https://bit.ly/34m5EDM',
  'https://bit.ly/3itHX1o',
  'https://bit.ly/3iq23tl',
  'https://bit.ly/3cS6SdI',
  'https://bit.ly/3jt9a5y',
  'https://bit.ly/33qfZiR',
  'https://bit.ly/3im8xJX',
  'https://bit.ly/2HV0RBX',
  'https://bit.ly/3lcyInV',
  'https://bit.ly/34jxW1F',
  'https://bit.ly/2Ge3f6i',
  'https://bit.ly/3jreoia',
  'https://bit.ly/2F063mU',
  'https://bit.ly/3jqXXmf',
  'https://bit.ly/30v4tAP',
  'https://bit.ly/33m9v4z',
  'https://bit.ly/3jolkgg',
  'https://bit.ly/2Snynmd',
  'https://bit.ly/3cWduYS',
  'https://bit.ly/30pxxJR',
  'https://bit.ly/2Gx0LiS',
  'https://bit.ly/30sHqqa',
  'https://bit.ly/34o7RP0',
  'https://bit.ly/2Syne29',
  'https://bit.ly/2GbRfSQ',
  'https://bit.ly/33ozcS5',
  'https://bit.ly/3jqMAe0',
  'https://bit.ly/30u6A83',
  'https://bit.ly/3cQ9vNp',
  'https://bit.ly/3nfLnIy',
  'https://bit.ly/34n5dJx',
  'https://bit.ly/33osRWI',
  'https://bit.ly/3ireG7o',
  'https://bit.ly/2Sm86EI',
  'https://bit.ly/3imDKwp',
  'https://bit.ly/2SkDMuf',
  'https://bit.ly/3cTab4t',
  'https://bit.ly/30w97ia',
  'https://bit.ly/3cUiehx',
  'https://bit.ly/3cUidtZ',
  'https://bit.ly/33lhP4y',
  'https://bit.ly/36F8lDt',
  'https://bit.ly/34jwSLd',
  'https://bit.ly/33oYzTR',
  'https://bit.ly/2SipvOL',
  'https://bit.ly/2Ge23Qm',
  'https://bit.ly/3irEKiV',
  'https://bit.ly/2HR0p7E',
  'https://bit.ly/3l4Xzu3',
  'https://bit.ly/30srEvE',
];

const country = ['United States', 'China', 'Canada', 'Cambodia', 'Vietnam', 'Mexico', 'Hawaii', 'South Africa', 'Australia'];
const writeSellers = fs.createWriteStream('sellers.csv');
writeSellers.write('id,first_name,last_name,seller_image,store_id\n', 'utf8');


const writeStores = fs.createWriteStream('stores.csv');
writeStores.write('id,store_name,sales,year_started,based_in,store_image\n', 'utf8');

const writeProducts = fs.createWriteStream('products.csv');
writeProducts.write('id,product_name,product_price,is_free_shipping,product_image,store_id\n', 'utf8');

function writeTenMillionSellers(writer, encoding, callback) {
  let i = 10000000;
  let id = 0;
  function write() {
    let ok = true;
    do {
      i -= 1;
      id += 1;
      const first_name = faker.name.firstName();
      const last_name = faker.name.lastName();
      const seller_image = `${pictures[Math.floor(Math.random() * Math.floor(pictures.length))]}`;
      const data = `${id},${first_name},${last_name},${seller_image},${id}\n`;
      if (i === 0) {
        writer.write(data, encoding, callback);
      } else {
        // see if we should continue, or wait
        // don't pass the callback, because we're not done yet.
        ok = writer.write(data, encoding);
      }
    } while (i > 0 && ok);
    if (i > 0) {
      // had to stop early!
      // write some more once it drains
      writer.once('drain', write);
    }
  }
  write();
}

function writeTenMillionStores(writer, encoding, callback) {
  let i = 10000000;
  let id = 0;
  function write() {
    let ok = true;
    do {
      i -= 1;
      id += 1;
      const store_name = faker.name.lastName();
      const sales = parseFloat(Math.ceil(Math.random() * Math.ceil(1000)));
      const year_started = Math.floor(Math.random() * (2020 - 2010 + 1)) + 2010;
      const based_in = `${country[Math.floor(Math.random() * Math.floor(country.length))]}`;
      const store_image = `${pictures[Math.floor(Math.random() * Math.floor(pictures.length))]}`;

      const data = `${id},${store_name},${sales},${year_started},${based_in},${store_image}\n`;
      if (i === 0) {
        writer.write(data, encoding, callback);
      } else {
        // see if we should continue, or wait
        // don't pass the callback, because we're not done yet.
        ok = writer.write(data, encoding);
      }
    } while (i > 0 && ok);
    if (i > 0) {
      // had to stop early!
      // write some more once it drains
      writer.once('drain', write);
    }
  }
  write()
}

function write10MillionProducts(writer, encoding, callback) {
  let i = 30000000;
  let id = 0;
  let items = 0;
  let storeid = 1;
  function write() {
    let ok = true;
    do {
      i -= 1;
      id += 1;
      if (items <= 3) {
        items += 1;
      } else {
        items = 0;
        storeid += 1;
      }

      const product_name = faker.commerce.productName();
      const product_price = parseFloat(Math.ceil(Math.random() * Math.ceil(99.99)));
      const is_free_shipping = Math.floor(Math.random() * (1 - 0 + 1));
      const product_image = `${pictures[Math.floor(Math.random() * Math.floor(pictures.length))]}`;
      const store_id = `${storeid}`;

      const data = `${id},${product_name},${product_price},${is_free_shipping},${product_image},${storeid}\n`;
      if (i === 0) {
        writer.write(data, encoding, callback);
      } else {
        // see if we should continue, or wait
        // don't pass the callback, because we're not done yet.
        ok = writer.write(data, encoding);
      }
    } while (i > 0 && ok);
    if (i > 0) {
      // had to stop early!
      // write some more once it drains
      writer.once('drain', write);
    }
  }
  write()
}

writeTenMillionSellers(writeSellers, 'utf-8', () => {
  writeSellers.end();
});
writeTenMillionStores(writeStores, 'utf-8', () => {
  writeStores.end();
});
write10MillionProducts(writeProducts, 'utf-8', () => {
  writeProducts.end();
});