LIL-125 Fix FB auth and use FB account photo

apps/auth/views.py

@@ -5,6 +5,7 @@ from facepy.exceptions import FacepyError
 
 from django.contrib.auth import get_user_model, logout, login, views
 from django.contrib.auth.forms import AuthenticationForm
+from django.core.files.base import ContentFile
 from django.http import JsonResponse
 from django.urls import reverse_lazy
 from django.utils.decorators import method_decorator
@@ -135,27 +136,34 @@ class FacebookLoginOrRegistration(View):
         graph = GraphAPI(access_token)
         try:
             data = graph.get('/me?fields=email, first_name, last_name')
+            photo_data = graph.get('/me/picture?height=120')
         except FacepyError:
             return JsonResponse({"success": False})
 
         fb_id = data.get('id')
 
-        lilcity_user_settings = User.objects.filter(fb_id=fb_id)
-        if lilcity_user_settings.count():
-            login(requests, user=lilcity_user_settings[0])
-            return JsonResponse({"success": True})
-
-        email = requests.POST.get('email') or data.get('email')
-        if not email:
-            return JsonResponse({"success": False,
-                                 "errors": {"email": 'is field required'}
-                                 })
+        try:
+            user = User.objects.get(fb_id=fb_id)
+        except User.DoesNotExist:
+            email = requests.POST.get('email') or data.get('email')
+            if not email:
+                return JsonResponse({"success": False,
+                                     "errors": {"email": 'is field required'}
+                                     })
+            else:
+                first_name = data.get('first_name', '')
+                last_name = data.get('last_name', '')
+
+                user = User.objects.create_user(username=email, email=email, first_name=first_name, last_name=last_name, password=uuid4().hex)
+                user.is_email_proved = True
+                user.fb_id = fb_id
+                if photo_data:
+                    photo = ContentFile(photo_data)
+                    fname = str(fb_id) + '.jpg'
+                    user.photo.save(fname, photo, save=True)
+                user.save()
+                login(requests, user=user)
+                return JsonResponse({"success": True})
         else:
-            first_name = data.get('first_name', '')
-            last_name = data.get('last_name', '')
-
-            user = User.objects.create_user(username=email, email=email, first_name=first_name, last_name=last_name, password=uuid4().hex)
-            user.is_email_proved = True
-            user.fb_id = fb_id
-            user.save()
+            login(requests, user=user)
             return JsonResponse({"success": True})