89 lines
3.9 KiB
Python
89 lines
3.9 KiB
Python
import json
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from telegram import Update, Bot
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from django.http import JsonResponse
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from django.views.decorators.csrf import csrf_exempt
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from asgiref.sync import sync_to_async
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from .models import TelegramBot
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from pxy_langchain.services import LangchainAIService
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from .handlers import dream_city_command, start, help_command, handle_location
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import logging
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from .models import TelegramConversation, TelegramMessage, TelegramBot
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from django.utils import timezone
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logger = logging.getLogger(__name__)
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@csrf_exempt
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async def telegram_webhook(request, bot_name):
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"""
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Webhook view that handles Telegram updates asynchronously and only uses LangChain.
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"""
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try:
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logger.info(f"Webhook called for bot: {bot_name}")
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# Step 1: Fetch the bot instance asynchronously
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try:
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bot_instance = await sync_to_async(TelegramBot.objects.get)(name=bot_name, is_active=True)
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# Step 1.5: get_or_create de la conversación
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user_id = str(update.effective_user.id)
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conv, _ = await sync_to_async(TelegramConversation.objects.get_or_create)(
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bot=bot_instance,
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user_id=user_id,
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defaults={'started_at': timezone.now()}
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)
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# Step 1.6: guardar mensaje entrante
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incoming_text = update.message.text or ""
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await sync_to_async(TelegramMessage.objects.create)(
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conversation=conv,
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direction=TelegramMessage.IN,
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content=incoming_text
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)
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logger.info(f"Loaded bot configuration: {bot_instance}")
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except TelegramBot.DoesNotExist:
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logger.error(f"Bot '{bot_name}' not found or inactive.")
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return JsonResponse({"error": f"Bot '{bot_name}' not found."}, status=400)
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# Step 2: Ensure the bot has a LangChain assistant
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if not bot_instance.assistant:
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logger.error(f"No assistant configured for bot '{bot_name}'.")
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return JsonResponse({"error": "Assistant not configured."}, status=400)
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# Step 3: Process POST request from Telegram
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if request.method == "POST":
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try:
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request_body = json.loads(request.body.decode("utf-8"))
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update = Update.de_json(request_body, Bot(token=bot_instance.token))
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logger.info(f"Update received: {update}")
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except json.JSONDecodeError as e:
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logger.error(f"Failed to decode JSON: {e}")
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return JsonResponse({"error": "Invalid JSON payload"}, status=400)
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# Step 4: Route commands to the appropriate handlers
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if update.message:
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if update.message.text == "/start":
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await start(update)
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elif update.message.text == "/help":
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await help_command(update)
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elif update.message.text == "/dream_city":
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await dream_city_command(update)
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elif update.message.location:
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await handle_location(update)
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else:
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# Step 5: Process AI-generated response using LangChain
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assistant_instance = await sync_to_async(LangchainAIService)(bot_instance.assistant)
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bot_response = await sync_to_async(assistant_instance.generate_response)(update.message.text)
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# Step 6: Send the response back to Telegram
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await update.message.reply_text(bot_response)
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return JsonResponse({"status": "ok"})
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logger.warning("Received non-POST request")
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return JsonResponse({"error": "Invalid request method"}, status=400)
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except Exception as e:
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logger.error(f"Error in webhook: {e}")
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return JsonResponse({"error": f"Unexpected error: {str(e)}"}, status=500)
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