index.js

require('dotenv').load();
const request = require('request');
const arenas = require('./data/arenas.json');
const cards = require('./data/cards.json');
const players = require('./data/players.json');
const chests = require('./data/chests.json');
const leagues = require('./data/leagues.json');
const user = { username: process.env.ADMIN_USERNAME || 'admin', password: process.env.ADMIN_PASSWORD || 'admin' };
const uri = 'http://localhost:8085/';

request.post({
    url: uri + 'api/authenticate',
    headers: {
      'Accept': 'application/json'
    },
    form: user
  }, (err, httpResponse, body) => {
    const token = body;
    // save(token, 'api/cards', cards);
    // save(token, 'api/chests', chests);
    // save(token, 'api/players', players);
    // save(token, 'api/leagues', leagues);
    save(token, 'api/arenas', arenas);
  });

const save = (token, endpoint, objects) => {
  objects.forEach((o) => {
    request.post({
      url: uri + endpoint,
      headers: {
        'Authorization': token,
        'Accept': 'application/json'
      },
      form: o
    }, (err, httpResponse, body) => {
      console.log(o);
    });
  });
}