server.js

import express from 'express'
import cors from 'cors'
import swaggerJSDoc from 'swagger-jsdoc'
import swaggerUI from 'swagger-ui-express'

import { ConnectDB } from './Config/SSEContext.js'
import { AdminRouter } from './Web/Routes/Api/AdminRouter.js'

import { CartRouter } from './Web/Routes/Api/CartRouter.js'
import { ChatRouter } from './Web/Routes/Api/ChatRouter.js'
import { ProductRouter } from './Web/Routes/Api/ProductRouter.js'
import { UserRouter } from './Web/Routes/Api/UserRouter.js'
import { WalletRouter } from './Web/Routes/Api/WalletRouter.js'

const app = express()
const router = express.Router()

var corsOptions = {
    origin: 'http://localhost:3000',
    optionsSuccessStatus: 200 //* some legacy browsers (IE11, various SmartTVs) choke on 204
}

// * Swagger Configuration  
const options = {
    definition: {
        openapi: "3.0.0",
        info: {
            title: "OnlineShopping Server",
            version: "0.3.0",
            description: "APIs for online shoping"
        },
        servers: [
            {
                url: "http://192.168.10.10:6900"
            },
            {
                url: "https://sseserver1.herokuapp.com"
            },
            {
                url: "https://online-shopping-server.herokuapp.com"
            },
            {
                url: "http://localhost:6900"
            },
        ],
    },
    apis: ["./Web/Routes/Api/*.js"]
}
const specs = swaggerJSDoc(options);
// app.options('*', cors({ credentials: true, origin: true })) // include before other routes
app.use('/api-docs', swaggerUI.serve, swaggerUI.setup(specs));
// router.use('/api-docs', swaggerUI.serve);
// router.get('/api-docs', swaggerUI.setup(swaggerDocs));

// * Connect to DB
ConnectDB()

// * Init Middleware
app.use(cors()) //* only this working
app.use(express.json({ extended: false }))
app.get(
    '/',
    // cors(corsOptions),
    (req, res) => {
        var hostname = req.headers.host;
        res.writeHead(302, {
            'Location': `/api-docs`
            //add other headers here...
        });
        res.end();
    })

// * Define Routes

app.use('/Api/Cart', CartRouter)
app.use('/Api/Chat', ChatRouter)
app.use('/Api/Product', ProductRouter)
app.use('/Api/User', UserRouter)
app.use('/Api/Wallet', WalletRouter)
app.use('/Api/Admin', AdminRouter)

const PORT = process.env.PORT || 6900
app.listen(
    PORT,
    // `192.168.10.8`, //todo: home PTCL1
    // `192.168.10.6`, //todo: home PTCL2
    // `192.168.10.4`, //todo: home PTCL3
    // `192.168.10.9`, //todo: home PTCL4
    // `192.168.10.7`, //todo: home PTCL5
    // `192.168.43.249`, //todo: home Zong4G 
    () => console.info(`Server is running on port ${PORT}`)
)