class MyCustomUser(AbstractBaseUser):
     email = models.EmailField(max_length=50, verbose_name='email', unique=True)
     first_name    = models.CharField( max_length=15,blank=False)
     last_name     = models.CharField( max_length=15,blank=True)
     slug          = models.SlugField(null=True, unique=True)
     is_staff      = models.BooleanField()
     is_active     = models.BooleanField(default=True)
     is_admin      = models.BooleanField(default=False)

     objects = UserManager()

     USERNAME_FIELD = 'email'
     REQUIRED_FIELDS = []


     def get_full_name(self):
         full_name = '{0} {1}'.format(self.first_name, self.last_name)
         return full_name.strip()

     def get_short_name(self):
         return self.first_name


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

     def has_module_perms(self, app_label):
         return True

     @property
     def is_staff(self):
         return self.is_admin


     def __str__(self):
         return self.first_name

class SignUpForm(UserCreationForm):
     first_name  = forms.CharField(widget=forms.TextInput(
                    attrs={'class':'form-control', 'placeholder':'First Name'}))

     last_name   = forms.CharField(widget=forms.TextInput(
                    attrs={'class':'form-control','placeholder':'Last Name'}))

     email       = forms.EmailField(widget=forms.EmailInput(
                    attrs={'class':'form-control', 'placeholder':'Email'}))

     password1   = forms.CharField(widget=forms.PasswordInput(
                    attrs={'class':'form-control', 'placeholder':'Password'}))

     password2   = forms.CharField(widget=forms.PasswordInput(
                    attrs={'class':'form-control', 'placeholder':'Repeat the password'}))



     class Meta:
         model = MyCustomUser
         fields = ['first_name','last_name','email', 'password1', 'password2']

def sign_up(request):
     form = SignUpForm()
     if request.method == 'POST':
         form = SignUpForm(request.POST)

         if form.is_valid():

             user = form.save(commit=False)

             #create instance of first_name an last_name
             full_name = '{0} {1}' .format(user.first_name, user.last_name)

             #create user slug with full_name
             user.slug = slugify(full_name)
             user.is_active = True
             user.save()

             email = form.cleaned_data.get('email')
             raw_password = form.cleaned_data.get('password1')

             site = get_current_site(request)
             message = render_to_string('jogos/acc_active.html',{
               'user':user,
               'domain': site.domain,
               'uid': urlsafe_base64_encode(force_bytes(user.pk)),
               'token':  default_token_generator.make_token(user),
               })

             mail_subject = 'Activate your account'
             to_email = form.cleaned_data.get('email')
             email = EmailMessage(mail_subject, message, to=[to_email])
             email.send()


             user = authenticate(email=email, password=raw_password)
             if user is not None:

                 login(request, user)

                 if request.user.is_authenticated():

                     return HttpResponseRedirect(reverse_lazy('jogos:question-list'))

    else:
        form = SignUpForm()
    return render(request, 'jogos/sign_up.html', {'form':form})

class MyCustomBackend(object):

     def authenticate(self, request, email=None, password=None, **kwargs):

         try:
             user = MyCustomUser.objects.get(email=email)

             if user.check_password(user.password):
                 return user
             else:
                 return None

         except MyCustomUser.DoesNotExist:
             return None


     def get_user(self, user_id):
         try:
             return MyCustomUser.objects.get(pk=user_id)

         except MyCustomUser.DoesNotExist:
             return None