'use strict'
require('dotenv').config()
const express = require('express')
const app = express()
const PORT = process.env.PORT || 8080

const mailer = require('nodemailer').createTransport({
	host: process.env.MAIL_SERVER,
	port: (process.env.MAIL_USER!=null)?25:587,
	auth: (process.env.MAIL_USER!=null)?null:{
		user: process.env.MAIL_USER,
		pass: process.env.MAIL_PASS,
	},
	tls: (process.env.MAIL_USER!=null)?null:{
		rejectUnauthorized: false,
	},
})

app.use(express.json()).post('/', async (req, res) => {

	// Parse from address		
	let from
	if (req.body['name'] && req.body['email']) from = `${req.body['name']} <${req.body['email']}>`
	else if (req.body['name']) from = req.body['name']
	else if (req.body['email']) from = req.body['email']
	else from = 'Anonymous'

	// Send email
	let mail_res;
	try {
		console.log(`Sending email from ${from} to ${process.env.MAIL_TO}...`)
		mail_res = await mailer.sendMail({
			from: process.env.MAIL_FROM,
			replyTo: from,
			to: process.env.MAIL_TO,
			subject: req.body['subj'],
			text: req.body['msg'],
		})
	} catch (err) {
		console.error(err)
		return res.sendStatus(500)
	}
	console.log(`Sent email ${mail_res.messageId}`)
	return res.sendStatus(200)

}).listen(PORT, () => {
	console.log(`API listening on ${PORT}`)
})