from django.contrib.auth.models import PermissionsMixin
from django.db import models
from django.utils.http import urlquote
from django.utils.translation import ugettext_lazy as _


class CustomUserManager(BaseUserManager):
    """
    Custom user model manager where email is the identifier for authentication
    instead of usernames.
    """
    def create_user(self, email, password, name, **extra_fields):
        """
        Creates and saves a User with the given email and password.
        """
        if not email:
            raise ValueError('The given email must be set')
        email = self.normalize_email(email)
        user = self.model(email=email,
                          name=fname,
                          **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, name, password, **extra_fields):
        """
        Create and save a SuperUser with the given email and password.
        Function needed to run <createsuperuser> django command.
        """
        user = self.model(email=email,
                          name=name,
                          **extra_fields)
        user.set_password(password)
        user.is_admin = True
        user.save(using=self._db)
        return user


class User(AbstractBaseUser, PermissionsMixin):
    username = None # ←- Here disables a field from AbstractBaseUser
    email = models.EmailField('Email address',
                              unique = True,
                              error_messages = {
                                'unique': 'This email already exists.'
                              })
    name = models.CharField('First name',
                            blank = False,
                            max_length = 50)
    is_admin = models.BooleanField('Admin status',
                                    default = False)
    USERNAME_FIELD = 'email' # ←- Here you told Django that this is the login param
    REQUIRED_FIELDS = ['name']

    objects = CustomUserManager() # ←- Here you told Django that this is the manager
    
    def __str__(self):
        return self.email

    def has_perm(self, perm, obj=None):
        return self.is_admin

    @property
    def is_staff(self):
        "Is the user a member of staff?"
        # Simplest possible answer: All admins are staff
        return self.is_admin