from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
from django.core.validators import RegexValidator

class UserProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    phone_regex = RegexValidator(regex=r'^\+?1?\d{9,16}$',
                                 message="Номер телефона должен быть в формате: '+700112299'. Макс. длинна = 16 знаков")
    phone_number = models.CharField(max_length=16, validators=[phone_regex], blank=True, verbose_name="Телефон")
    email = models.EmailField(blank=True, verbose_name="Email")
    created = models.DateTimeField(auto_now_add=True, db_index=True, blank=True, verbose_name="Создан")
    date_of_birth = models.DateField(blank=True, null=True)
    photo = models.ImageField(upload_to='users/%Y/%m/%d', blank=True)

    def __str__(self):
        return 'Профиль пользователя {}'.format(self.user.name)


@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        UserProfile.objects.create(user=instance)


# @receiver(post_save, sender=User)
# def save_user_profile(sender, instance, **kwargs):
#     instance.profile.save()