facebookconnect middleware

middleware.py

from django.conf import settings
from django.contrib.auth import authenticate, login as auth_login
from django.core.urlresolvers import reverse

from facebookconnect.models import FacebookProfile
from facebookconnect.utils import facebook_login_check


class LazyFacebookLoginCheck(object):

    def __get__(self, request, obj_type=None):
        if not hasattr(request, '_facebook_login_check'):
            facebook_check = facebook_login_check(request.COOKIES)
            if facebook_check and not request.user.is_authenticated() and request.path != reverse('auth_logout'):
                user = authenticate(request=request)
                if user:
                    auth_login(request, user)
            request._facebook_login_check = facebook_check
            
        return request._facebook_check


class LazyFacebookProfile(object):

    def __get__(self, request, obj_type=None):
        if not hasattr(request, '_facebook_profile'):
            try:
                facebook_profile = FacebookProfile.objects.get(user=request.user)
                request._facebook_profile = facebook_profile
            except FacebookProfile.DoesNotExist:
                request._facebook_profile = None

        return request._facebook_profile


class FacebookConnectMiddleware(object):
    
    def process_request(self, request):
        request.__class__.facebook_login_check = LazyFacebookLoginCheck()
        request.__class__.facebook_profile = LazyFacebookProfile()
        return None