index.js

const express = require("express")
const mongoose = require("mongoose")
const dotenv = require("dotenv")
const path = require("path")
const PORT = process.env.PORT || 5000
dotenv.config()
const app = express()

const mongoString = `mongodb+srv://${process.env.DB_USERNAME}:${process.env.DB_PASSWORD}@cluster0.j4amt.mongodb.net/CyberSecWebsiteDB?retryWrites=true&w=majority`

mongoose.connect(mongoString, { useNewUrlParser: true, useUnifiedTopology: true })

mongoose.connection.on("error", function (error) {
    if (process.env.NODE_ENV === "development") {
        console.log(error)
    }
})

mongoose.connection.on("open", function () {
    console.log("Connected to MongoDB database.")
})

app.use(require("./routes/index.js"))
app.use("/assets", express.static(path.join(__dirname, "..", "..", "assets")))
app.listen(PORT, function () {
    console.log(`Express app listening on port ${PORT}`)
})