app.js

const express = require("express")
const bodyParser = require("body-parser")
const request = require("request")
const https = require("https")

const app = express()

app.use(express.static("public"))
app.use(bodyParser.urlencoded({extended: true}))
app.get("/", function (req,res){
    res.sendFile(__dirname + "/signup.html")
})

app.post("/", function (req, res){
    const firstName = req.body.fName
    const lastName = req.body.lName
    const email = req.body.email

    const data = {
        members: [
            {
                email_address: email,
                status: "subscribed",
                merge_fields: {
                    FNAME: firstName,
                    LNAME: lastName
                }
            }
        ]
    }

    const jsonData = JSON.stringify(data)

    const url = "https://us20.api.mailchimp.com/3.0/lists/52db0fa65b"

    const options = {
        method: "post",
        auth: "angela:a9fc74c5e69861bcfc149e7e6c1e442d-us20"
    }

    const request = https.request(url, options, function(response){

        if (response.statusCode == 200){
            res.sendFile(__dirname + '/success.html')
        }else{
            res.sendFile(__dirname + '/failure.html')
        }

        response.on("data", function (data){
            console.log(JSON.parse(data))
        })

    })

    request.write(jsonData)
    request.end()
})

app.post("/failure", function (req,  res){
    res.redirect("/")
})
app.listen(process.env.PORT || 3000, function(){
    console.log("Server is running on port 3000")
})