from django.contrib.auth.models import BaseUserManager

class CustomUserManager(BaseUserManager):
    """
    Custom manager za User model gdje koristimo email kao identifikator.
    """
    def create_user(self, email, password=None, **extra_fields):
        if not email:
            raise ValueError('Email adresa mora biti zadana.')

        extra_fields.pop('username', None)
        
        email = self.normalize_email(email)
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, password=None, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)
        extra_fields.setdefault('is_active', True)
        extra_fields.setdefault('is_serviser', True)

        if extra_fields.get('is_staff') is not True:
            raise ValueError('Superuser mora imati is_staff=True.')
        if extra_fields.get('is_superuser') is not True:
            raise ValueError('Superuser mora imati is_superuser=True.')

        return self.create_user(email, password, **extra_fields)