import logging
import traceback
from typing import Any

from django.db.models.signals import post_save
from django.dispatch import receiver

from payments.models import Balance, Transaction
from payments.utils.emailing import balance_deposit_email
from vibes_auth.models import User

logger = logging.getLogger("django")


# noinspection PyUnusedLocal
@receiver(post_save, sender=User)
def create_balance_on_user_creation_signal(instance: User, created: bool, **kwargs: dict[Any, Any]) -> None:
    if created:
        Balance.objects.create(user=instance)


# noinspection PyUnusedLocal
@receiver(post_save, sender=Transaction)
def process_transaction_changes(instance: Transaction, created: bool, **kwargs: dict[Any, Any]) -> None:
    if created:
        if not instance.gateway:
            raise ValueError("gateway is required to process a transaction")
        try:
            gateway = instance.gateway.get_integration_class_object()
            gateway.process_transaction(instance)
        except Exception as e:
            instance.process = {"status": "ERRORED", "error": str(e)}
            logger.error(f"Error processing transaction {instance.uuid}: {e}\n{traceback.format_exc()}")
    if not created:
        status = str(instance.process.get("status", "")).lower()
        success = instance.process.get("success", False)

        if ("success" in status or success) and (instance.process.get("notify", False)):
            balance_deposit_email.delay(instance.uuid)  # type: ignore [attr-defined]