import threading

import factory

from django.conf import settings
from factory.django import DjangoModelFactory

settings.configure()


class Factory(DjangoModelFactory):
    class Meta:
        strategy = factory.CREATE_STRATEGY
        model = None
        abstract = True

    _SEQUENCE = 1
    _SEQUENCE_LOCK = threading.Lock()

    @classmethod
    def _setup_next_sequence(cls):
        with cls._SEQUENCE_LOCK:
            cls._SEQUENCE += 1
        return cls._SEQUENCE


class UserFactory(Factory):
    class Meta:
        model = settings.AUTH_USER_MODEL
        strategy = factory.CREATE_STRATEGY

    username = factory.Sequence(lambda n: f"user{n}")
    email = factory.LazyAttribute(lambda obj: f'{obj.username}@email.com')
    password = factory.PostGeneration(lambda obj, *args, **kwargs: obj.set_password(obj.username))