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

from .models import Token

@receiver(post_save, sender=settings.AUTH_USER_MODEL)
def create_user_token(sender, instance=None, created=False, **kwargs):
    """
    When a new user is created, this signal will also create a new API token for this user. So every user will have an API token.

    Arguments
    ----------
    sender : sender
        The model that has triggered the signal

    instance: :attr:`~django.contrib.auth.models.User`
        The newly created user model data

    created : Boolean
        Wether the object was created (True) or updated (False).
    """
    if created:
        Token.objects.create(user=instance)