opt-cc/server/test/content-tool/user-db-item-creator.js

const config = require('../../config/config');
const mongoose = require('mongoose');
mongoose.connect(config.database.uri + config.database.db);
const UserModel = require('../../models/user');

const squads = ['590dd702b899f8050691f09a', '59101b6366d61c085a9f57df',
  '591025e266d61c085a9f57e1', '591025cf66d61c085a9f57e0', '590d2cf5bd08480bd4ecc128'];


/**
 * provide number of users to create as argument
 */
const quantity = process.argv[2];


// CONNECTION EVENTS
// When successfully connected
mongoose.connection.on('connected', () => {
  console.log('Mongoose default connection open');
});

const createString = (possible, length) => {
  let text = '';

  for (let i = 0; i < length; i++) {
    text += possible.charAt(Math.floor(Math.random() * possible.length));
  }

  return text;
};

for (let i = 0; i < quantity; i++) {
  const squadId = squads[Math.floor(Math.random() * squads.length)];

  UserModel.create({
    username: createString('abcdefghijklmnopqrstuvwxyz0123456789', 10),
    squadId: squadId,
    rankLvl: Math.floor(Math.random() * 22),
  }, (err, user) => {
    if (err) {
      console.log(err);
    } else {
      console.log('User created: ' + user);
    }
  });
}

// If the Node process ends, close the Mongoose connection
process.on('SIGINT', () => {
  mongoose.connection.close(() => {
    console.log('Mongoose default connection disconnected through app termination');
    process.exit(0);
  });
});

// process.exit();