server.js

const express = require("express");
const cors = require("cors");
const mongoose = require('mongoose'); // importuje również mongodb

const employeesRoutes = require("./routes/employees.routes");
const departmentsRoutes = require("./routes/departments.routes");
const productsRoutes = require("./routes/products.routes");

const app = express();

app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: false }));

app.use("/api", employeesRoutes);
app.use("/api", departmentsRoutes);
app.use("/api", productsRoutes);

app.use((req, res) => {
  res.status(404).send({ message: "Not found..." });
});

// connects our backend code with the database
const NODE_ENV = process.env.NODE_ENV;
let dbUri = '';

if(NODE_ENV === 'production') dbUri = 'url to remote db';
else if(NODE_ENV === 'test') dbUri = 'mongodb://0.0.0.0:27017/companyDBtest';
else dbUri = 'mongodb://0.0.0.0:27017/companyDB';

mongoose.connect(dbUri, { useNewUrlParser: true, useUnifiedTopology: true });
const db = mongoose.connection;

db.once('open', () => {
  //console.log('Connected to the database');
});
db.on('error', err => console.log('Error ' + err));

const server = app.listen('8000', () => {
  //console.log('Server is running on port: 8000');
});

module.exports = server;