Example of how to host telegram bot on heroky

main.go

package main

import (
	"gopkg.in/telegram-bot-api.v4"
	"log"
	"net/http"
	"os"
)

func main() {
	bot, err := tgbotapi.NewBotAPI(os.Getenv("BOT_TOKEN"))
	if err != nil {
		log.Panic(err)
	}

	bot.Debug = true

	log.Printf("Authorized on account %s", bot.Self.UserName)

	bot.RemoveWebhook()
	_, err = bot.SetWebhook(tgbotapi.NewWebhook("https://name_of_your_app.herokuapp.com/" + bot.Token))
	if err != nil {
		log.Fatal(err)
	}

	updates := bot.ListenForWebhook("/" + bot.Token)
	go http.ListenAndServe("0.0.0.0:"+os.Getenv("PORT"), nil)

	for update := range updates {

		// log.Printf("%+v\n", update)

		if update.Message == nil {
			continue
		}

		log.Printf("[%s] %s", update.Message.From.UserName, update.Message.Text)

		

	}

}