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


class RadioUserManager(BaseUserManager):
    '''
    Custom user model manager where email is the unique identifier for
    authentication instead of the username.

    Credit for assistance goes to Michael Herman:
    https://testdriven.io/blog/django-custom-user-model/
    '''

    def create_user(self, email, password=None, **extra_fields):
        '''
        Create and save a user.
        '''
        if not email:
            raise ValueError(_('You must provide an email.'))
        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):
        '''
        Create and save a superuser.
        '''
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)
        extra_fields.setdefault('is_active', True)
        extra_fields.setdefault('is_dj', False)

        if extra_fields.get('is_staff') is not True:
            raise ValueError(
                _('A superuser must have "is_staff" set to True.')
            )
        if extra_fields.get('is_superuser') is not True:
            raise ValueError(
                _('A superuser must have "is_supervisor" set to True.')
            )
        return self.create_user(email, password, **extra_fields)