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

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    timezone = models.CharField(max_length=30, blank=True)
    lang = models.CharField(max_length=2, blank=True)

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

@receiver(post_save, sender=User)
def save_user_profile(sender, instance, **kwargs):
    if not Profile.objects.filter(user=instance).exists():
        Profile.objects.create(user=instance)
    instance.profile.save()

class ALog(models.Model):
    name = models.CharField(max_length=100)
    dts = models.DateTimeField()
    counter = models.IntegerField(null=True)
    duration = models.IntegerField(null=True)
