from django.contrib.auth.base_user import BaseUserManager
from django.utils.translation import gettext_lazy as _


class CustomUserManager(BaseUserManager):
    """
    Custom user model manager where email is the unique identifiers
    for authentication instead of usernames.
    """
    def create_user(self, username, password, **extra_fields):
        """
        Create and save a User with the given username, branch_name and password.
        """
        if not username:
            raise ValueError(_('The username name must be set'))
        user = self.model(username=username, **extra_fields)
        user.set_password(password)
        user.save()
        return user


    def create_superuser(self, username, password, **extra_fields):
        """
        Create and save a SuperUser with the given branch_name and password.
        """
        extra_fields.setdefault('is_admin', True)
        extra_fields.setdefault('is_superuser', True)
        extra_fields.setdefault('is_active', True)

        if extra_fields.get('is_superuser') is not True:
            raise ValueError(_('Superuser must have is_superuser=True.'))

        if extra_fields.get('is_admin') is not True:
            raise ValueError(_('Superuser must have is_admin=True.'))

        if extra_fields.get('is_active') is not True:
            raise ValueError(_('Superuser must have is_active=True.'))

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