const MailListener = require("mail-listener2")
const ImapSimple = require('imap-simple')
const mailparser = require('mailparser')
const fs = require('fs')
if (!fs.existsSync('./credentials.json')) fs.copyFileSync('./credentials.default.json', './credentials.json')
let $ImapConnection


const config = require('./config.json')
const credentials = require('./credentials.json')

const nodemailer = require("nodemailer")
config.smtp = Object.assign({}, credentials, credentials.smtp)
let smtpTransporter = nodemailer.createTransport({
    host: config.smtp.host,
    port: config.smtp.port,
    secure: config.smtp.tls,
    auth: {
      user: config.smtp.user, // generated ethereal user
      pass: config.smtp.password, // generated ethereal password
    },
})

config.imap = Object.assign({}, credentials, credentials.imap)

config.imap.username = config.imap.user
//config.onmail = () => ScanUnread()
const io = require("socket.io-client")
const axios = require('axios')
const socket = io(new URL(config.pager.url).origin)

const mailListener = new MailListener({
    ...config.imap,
    connTimeout: 10000,
    authTimeout: 10000,
    //debug: console.log,
    tlsOptions: { rejectUnauthorized: false },
    mailbox: "INBOX",
    searchFilter: ["UNSEEN"],
    markSeen: true,
    fetchUnreadOnStart: true,
})


const searchCriteria = ['UNSEEN']
const fetchOptions = {
	bodies: ['HEADER', 'TEXT', ''],
	markSeen: true,
	struct: true,
}
const ignoreImapIDs = []
function main() {
/*	ImapSimple
		.connect(config)
		.then((connection) => {
			$ImapConnection = connection
		})
		.then(ScanUnread)
*/
}

const ingressMap = {}
socket.on('msgmgr:event', async (eventType, eventData) => {
    console.log(eventType, eventData)
    switch (eventType) {
        case 'status': {
            const [msgId, uuid, status] = eventData
			if (!!ingressMap[msgId]) ingressMap[ msgId ][2].push(`${ uuid } is ${ status }`)
		} break;
        case 'read':
			if (!!ingressMap[ eventData ]) ingressMap[ eventData ][2].push('read')
			break;
        case 'response': {
            const [msgId, response] = eventData
			if (!!ingressMap[msgId]) {
				ingressMap[ msgId ][2].push(`response ${ response }`)
				//const [ replyTo, subject, logArray ] = ingressMap[msgId]
				let info = await smtpTransporter.sendMail({
					from: `"msg-email--smartpager 👻" <${ config.smtp.user }>`,
					to: ingressMap[msgId][ 0 ],
					subject: `Response [${ ingressMap[msgId][ 1 ] }] ${ response.toString() }`,
					text: `Response: ${ response.toString() }\n${ ingressMap[msgId][ 2 ].join('\n') }`,
					inReplyTo: ingressMap[msgId][ 3 ]
				  });
				
				  console.log("Message sent: %s", info.messageId, ingressMap[ msgId ]);
			}
        } break;
    }
})


async function sendPage(payload) {
	console.log(payload)
	return (await axios.post(config.pager.url, Object.assign({ ...config.pager.params }, { payload })))
}
function checkMatch(mail, cmd) {
	if (!!cmd.subjectContains && !(mail.subject.indexOf(cmd.subjectContains) > -1)) return 0 // subjectContains does not match
	if (!!cmd.mxdomainExact && !(mail.from.value[0].address)) return 0
	if (!!cmd.mxdomainContains && !(mail.from.value[0].address.indexOf(cmd.mxdomainContains) > -1)) return 0 // mxdomainContains does not match

	return !!cmd.ignore ? 1 : 2 // if ignore is set, lets break with 1, otherwise send page with 2
}
async function processMail(mail) {
	for (processCommand of config.handling.processing) {
		let res = checkMatch(mail, processCommand)
		if (res) {
			if (!!processCommand.format && !processCommand.ignore) {
				console.log(mail)
				let payload = processCommand.format
				payload = payload.replace("[subject]", mail.subject)
				payload = payload.replace("[from]", mail.from.text)
				payload = payload.replace("[fromName]", mail.from[0].name || mail.from[0].address)
				payload = payload.replace("[fromAddress]", mail.from[0].address)
				sendPage(payload)
				.then(result => {
					if (!!processCommand.duplexReply) {
						ingressMap[ result.data ] = [
							mail.from[0].address,
							mail.subject,
							[],
							mail.messageId
						]
						console.log('Duplex Handling Active', result.data, mail.from[0].address)
						return 
					}
				})
			}
		}
	}
}
/*
function ScanUnread() {
	return $ImapConnection.openBox('INBOX')
		.then(() => $ImapConnection.search(searchCriteria, fetchOptions))
		.then((emails) => {
			console.log('unreadCount:', emails.length)
			if (emails.length > 0 && config.handling.onlySimpleCounter === true) {
				sendPage(config.handling.onlySimpleCounterFormat.replace("[unreadCount]", emails.length))
			} else {
				for (let mail of emails) {
					const all = mail.parts.filter(x => x.which == '')[ 0 ]
					const idHeader = `Imap-Id: ${mail.attributes.uid}\r\n`
					if (ignoreImapIDs.indexOf(mail.attributes.uid) > -1) continue // Skip already notified mails
					ignoreImapIDs.push(mail.attributes.uid)
					mailparser.simpleParser(idHeader + all.body).then(processMail)
				}
			}
		})
}
*/
mailListener.on("server:connected", () => {
        console.log("imapConnected")
})
mailListener.on("server:disconnected", () => {
        console.log("imapDisconnected")
	require('process').exit()
})
mailListener.on("error", (err) => {
        console.log(err)
})

mailListener.on("mail", async (mail, seqno, attributes) => {
	//if (mail.headers.from == "eBay Kleinanzeigen <noreply@ebay-kleinanzeigen.de>" && mail.headers.subject == "Aktiviere jetzt dein eBay Kleinanzeigen Konto") {
	console.log("emailParsed", mail.headers.subject, mail.headers.to)
	processMail(mail)
	//await fuckEcho(mail.html, mail.headers.to)
	//      await registrator.handleMail(mail.html, mail.headers.to)
	//}
})

mailListener.start()
main()








const express = require('express')
const appConfig = express()
appConfig.use(express.json())
appConfig.use(express.static('html'))

/** CONFIG Routes */

appConfig.get('/config', async (req, res) => {
    return res.json(JSON.parse(fs.readFileSync('config.json')))
})
appConfig.post('/config', async (req, res) => {
    if (!(!!req.body.pager)) return res.status(403).json(false)
    if (!(!!req.body.handling)) return res.status(403).json(false)
    console.log(req.body)
    fs.writeFileSync('config.json', JSON.stringify(req.body, null, "\t"))
    return res.json(true)
})
appConfig.get('/credentials', async (req, res) => {
    return res.json(JSON.parse(fs.readFileSync('credentials.json')))
})
appConfig.post('/credentials', async (req, res) => {
    fs.writeFileSync('credentials.json', JSON.stringify(req.body, null, "\t"))
    return res.json(true)
})
appConfig.post('/restart', (req, res) => {
    process.exit(1)
})

appConfig.listen(3010, '0.0.0.0' || config.host || '127.0.0.1')