// Follow this setup guide to integrate the Deno language server with your editor:
// https://deno.land/manual/getting_started/setup_your_environment
// This enables autocomplete, go to definition, etc.

console.log(`Function "telegram-bot" up and running!`)

import { Bot, webhookCallback } from 'https://deno.land/x/grammy@v1.8.3/mod.ts'

const bot = new Bot(Deno.env.get('TELEGRAM_BOT_TOKEN') || '')

bot.command('start', (ctx) => ctx.reply('Welcome! Up and running.'))

bot.command('ping', (ctx) => ctx.reply(`Pong! ${new Date()} ${Date.now()}`))

const handleUpdate = webhookCallback(bot, 'std/http')

Deno.serve(async (req) => {
  try {
    const url = new URL(req.url)
    if (url.searchParams.get('secret') !== Deno.env.get('FUNCTION_SECRET')) {
      return new Response('not allowed', { status: 405 })
    }

    return await handleUpdate(req)
  } catch (err) {
    console.error(err)
  }
})