server.js

const express = require("express");
const bodyParser = require("body-parser");
const mongoose = require("mongoose");
const cors = require("cors");
const cookieSession = require("cookie-session");
const cookieParser = require("cookie-parser");
const router = require("./router/index");
const errorMiddleware = require("./middlewares/error-middleware");
const config = require("./config");

const app = express();

const PORT = config.PORT || 5000;

app.use(cors());
app.use(express.json());
app.use(cookieParser());
app.use(bodyParser.json());
app.use("/api", router);
app.use(errorMiddleware); // middleware должен всегда быть подключен в конце

app.use(
  cookieSession({
    name: "session",
    keys: ["this's my secret"],

    // Cookie Options
    maxAge: 24 * 60 * 60 * 1000, // 24 hours
  })
);

const start = async () => {
  try {
    app.listen(PORT, () =>
      console.log(`server was running on PORT = ${config.PORT}`)
    );
  } catch (e) {
    console.log(e);
  }
};

start();

mongoose.connect(config.DB_URL, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
});

mongoose.connection.on("connected", () => {
  console.log("Connect to DB");
});
mongoose.connection.on("error", (err) => {
  console.log("Not succesfull conection to database" + err);
});