index.js

const express = require("express");
const mongoose = require("mongoose");
const productRoutes = require("./routes/product.route.js");
const dotenv = require("dotenv")
const swaggerUI = require('swagger-ui-express')
const YAML = require('yamljs')
const swaggerDocument = YAML.load('./swagger.yaml')

const app = express();

// config
dotenv.config()


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

// routes
app.use('/api-docs', swaggerUI.serve, swaggerUI.setup(swaggerDocument, {explorer: true}));
app.use("/api/products", productRoutes);

app.get("/", (req, res) => {
  res.send("Hello from Node API");
});

// db and server connect
const PORT = process.env.NODE_ENV === 'production' ? process.env.PROD_PORT : process.env.DEV_PORT;
const dbConnectionString = `mongodb+srv://${process.env.DB_USERNAME}:${process.env.DB_PASSWORD}@backenddb.tihcy.mongodb.net/${process.env.DB_NAME}?retryWrites=true&w=majority&appName=${process.env.DB_CLUSTER_NAME}`

mongoose
  .connect(
    dbConnectionString
  )
  .then(() => {
    console.log("Connected to the Database!");
    app.listen(PORT, () => {
      console.log(`Server running on port ${PORT} in ${process.env.NODE_ENV} mode`);
    });
  })
  .catch(() => {
    console.log("Connection failed");
  });