from django.db import models
from django.contrib.auth.models import User
from .track import Track
from django.db.models.signals import post_save
from django.dispatch import receiver

class Background(models.Model):
    def __str__(self):
        return self.name
    name = models.CharField(max_length=128)
    image = models.ImageField(upload_to="wallpapers/", null=True, blank=True)
    repeat = models.BooleanField(default=False)
    color = models.CharField(max_length=32, blank=True)

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    background = models.ForeignKey(Background, null=True, on_delete=models.SET_NULL)
    last_voted = models.ForeignKey(Track, null=True, on_delete=models.SET_NULL)

@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):
    Profile.objects.get_or_create(user=instance)
    instance.profile.save()