import type { ApiRequest, ApiResponse } from '../_lib/types.js'

// Telegram webhook endpoint
// In production, the bot process handles updates via grammY's built-in webhook support
// This endpoint serves as a passthrough for webhook mode

async function handler(req: ApiRequest, res: ApiResponse) {
  if (req.method !== 'POST') {
    return res.status(405).json({ error: 'Method not allowed' })
  }

  // Verify webhook secret
  const secret = req.headers['x-telegram-bot-api-secret-token']
  if (secret !== process.env.BOT_WEBHOOK_SECRET) {
    return res.status(401).json({ error: 'Invalid secret' })
  }

  // The bot process will handle updates directly in webhook mode
  // This is a placeholder for when we integrate webhook into the server
  console.log('Received Telegram webhook update')
  return res.status(200).json({ ok: true })
}

export default handler