const express = require('express')
const app = express()

const fs = require('fs')

const port = 3000
const messages = []
let errorMessage;

app.use(express.urlencoded({ extended: true}))
app.set('view engine', 'ejs')

app.get('/', (request, response) => {
    response.render('index', { messages, errorMessage })
})

app.post('/entry/create', (request, response) => {
    const body = request.body

    const name = body.name
    if (!name) errorMessage = 'The name must be provided.'
    const message = body.message
    if (!message) errorMessage = 'The message must be provided.'
    messages.push({ name, message })

    response.redirect('/')
})

app.listen(port, () => console.log(`The Guestbook server is listening on port ${port}.`))