// https://www.reddit.com/r/ifttt/comments/3qhste/correct_way_to_escape_text/
// https://runkit.com/docs/endpoint
// https://birdie0.github.io/discord-webhooks-guide/services/ifttt.html
/**
{"text": "<<<{{Text}}>>>", "username": "<<<{{UserName}}>>>", "link": "<<<{{LinkToTweet}}>>>", "created_at": "<<<{{CreatedAt}}>>>", "embed": "<<<{{TweetEmbedCode}}>>>" }
**/
const runkitExpress = require("@runkit/runkit/express-endpoint/1.0.0");
const app = runkitExpress(module.exports);
const bodyParser = require('body-parser');
app.use(bodyParser.json());
const got = require('got')
const Telegram = require('telegraf/telegram')
const bot = new Telegram(process.env.TELEGRAM_BOT_TOKEN)
const channelID = '@ButNothingHappened'
// Utils
//const addSpaceAfterNextline = (str) => str.replace(/\n/g, "\n ")
const filterLinksAndRevert = async (str, twitterLink) => {
const twitterLinkList = [/twimg.com/, /twitter.com/, twitterLink]
const twitterLinkRegex = /https:\/\/t\.co\/[a-zA-Z0-9]{10}/g
const links = str.match(twitterLinkRegex) || []
const originalLinksPromise = await Promise.allSettled(links.map(e => got(e, { followRedirect: false }).then(res => res.headers.location)))
const originalLinks = originalLinksPromise.map(e => {
if (e.status === 'fulfilled' && e.value) {
// It should not be an twitter image: telegram preview will handle that
const isMatched = !twitterLinkList.every((reg) => e.value.match(reg) === null)
if (isMatched)
return ""
return e.value
} else {
console.log(e.reason)
return null
}
}) // null for not resolved, "" for empty, others for replace
let formatted = str
for (let i = 0; i < links.length; i++) {
if (originalLinks[i] !== null) {
formatted = formatted.replace(links[i], originalLinks[i])
}
}
return formatted
}
// Hide your path with some secret string
app.post(`/${process.env.SECRET_PATH}`, async (request, response, next) => {
const { text, link } = request.body
console.log(text, link)
// Example
// 第一行\n“第二行”\n抱怨一下 ifttt 的的开发者套装要199刀\n一个链接和😈\nhttps://t.co/jOGikF2wUE
let formatted = text
// formatted = addSpaceAfterNextline(text)
formatted = await filterLinksAndRevert(formatted, link)
const template = `${formatted}
<a href="${link}">参与讨论</a> powered by #Twitter`
console.log(template)
bot.sendMessage(channelID, template, {
parse_mode: 'html'
}).then(res => {
// Always close up connection
response.status(204).end()
}).catch(e => {
// Let ifttt knows we are in trouble
console.log(e)
response.status(500).end()
})
})
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