import TelegramBot from 'node-telegram-bot-api'
import debug from 'debug'
var log = debug('durov')
import config from 'config'


import { formatQuote, formatTitle } from './common/MessageUtils'
import { format } from '../src/utils/embed'

let sender
let demouser
let bot_token
const durov_token_key = 'service.durov.token'

if (config.has(durov_token_key)) {
    bot_token = config.get(durov_token_key)
    sender = new TelegramBot(bot_token)
    demouser = config.get('service.durov.demouser')
    sender.setWebHook(`${config.get('service.baseURL')}/api/${bot_token}`).then(() => {
        log('Webhook is set')
    }).catch(console.log)
    sender.on('message', msg => {
        log(`MESSAGE: ${JSON.stringify(msg)}`)
    })
}

export const webhookPath = () => {
    return bot_token
}

export const webhook = (req, res) => {
    sender.processUpdate(JSON.parse(req.body))
    res.sendStatus(200)
}

/**
 * @param {import('../src/api').Message} msg
 * @param {string[]} subscribers
 */
export const sendTelegramNotification = (msg, subscribers) => {
    log(`Telegram event: ${JSON.stringify(msg)}, ${subscribers} ${subscribers.length}`)
    if (!msg.service) {
        if (subscribers && subscribers.includes(demouser)) {
            const message = `${formatTitle(msg)}\n${formatQuote(msg)}\n${format(msg.body, msg.uid, false)}`
            log(message)
            sender.sendMessage(demouser, message, {
                parse_mode: 'HTML',
                disable_web_page_preview: true
            }).then(log).catch(log)
        }
    }
}