common/admin.py

@@ -7,8 +7,7 @@ from django.core.exceptions import FieldDoesNotExist
 from django.db import models
 from django.db.models.constants import LOOKUP_SEP
 from django.urls import reverse
-from django.utils.html import escape
+from django.utils.html import escape, format_html
-from django.utils.html import format_html
 
 
 def get_admin_change_path(obj=None, app_label=None, model_name=None, pk=None):
@@ -27,7 +26,7 @@ def get_admin_change_url(obj=None, app_label=None, model_name=None, pk=None, tex
     """Return a link to the admin change page for a given object."""
     url = get_admin_change_path(obj=obj, app_label=app_label, model_name=model_name, pk=pk)
     if url:
-        text = repr(obj) if obj else text
+        text = str(obj) if obj else text
         return format_html(f'<a href="{url}">{text}</a>')
     return ''
 
@@ -57,6 +56,27 @@ def get_related_admin_change_url(obj, related_field):
     return get_admin_change_url(instance)
 
 
+def link_to(field_name, title=None):
+    if not title:
+        title = field_name.replace('_', ' ')
+    related_field_name = None
+    if '.' in field_name:
+        field_name, related_field_name = field_name.split('.')
+
+    @admin.display(description=title, ordering=field_name)
+    def _raw(obj):
+        if related_field_name:
+            target_obj = getattr(getattr(obj, field_name), related_field_name)
+        else:
+            target_obj = getattr(obj, field_name)
+
+        admin_url = get_admin_change_url(target_obj)
+        return admin_url
+
+    _raw.__name__ = field_name
+    return _raw
+
+
 class CommaSearchInAdminMixin:
     def get_search_id_field(self, request):
         """

common/tests/factories/extensions.py

@@ -80,7 +80,7 @@ class VersionFactory(DjangoModelFactory):
         ),
     )
     ratings = factory.RelatedFactoryList(
-        RatingFactory, size=lambda: random.randint(1, 50), factory_related_name='version'
+        RatingFactory, size=lambda: random.randint(0, 5), factory_related_name='version'
     )
 
     @factory.post_generation

extensions/forms.py

@@ -250,6 +250,25 @@ class ExtensionUpdateForm(forms.ModelForm):
 
     def save(self, *args, **kwargs):
         """Save the nested form(set)s, then the main form."""
+        if self.instance.is_listed:
+            updated_fields = set()
+            if 'description' in self.changed_data:
+                updated_fields.add('description')
+            if 'source' in self.featured_image_form.changed_data:
+                updated_fields.add('featured image')
+            if 'source' in self.icon_form.changed_data:
+                updated_fields.add('icon')
+            for form in self.add_preview_formset:
+                if 'source' in form.changed_data:
+                    updated_fields.add('previews')
+            if updated_fields:
+                reviewers.models.ApprovalActivity(
+                    user=self.request.user,
+                    extension=self.instance,
+                    type=reviewers.models.ApprovalActivity.ActivityType.COMMENT,
+                    message='updated ' + ', '.join(sorted(updated_fields)),
+                ).save()
+
         self.edit_preview_formset.save()
         self.add_preview_formset.save()
 
@@ -280,6 +299,7 @@ class ExtensionUpdateForm(forms.ModelForm):
                 type=reviewers.models.ApprovalActivity.ActivityType.AWAITING_REVIEW,
                 message=self.msg_awaiting_review,
             ).save()
+
         return super().save(*args, **kwargs)
 
 

extensions/tests/test_update.py

@@ -626,3 +626,46 @@ class UpdateTest(CheckFilePropertiesMixin, TestCase):
         self.assertEqual(response.status_code, 302, _get_all_form_errors(response))
         extension.refresh_from_db()
         self.assertEqual(extension.team.slug, 'test-team')
+
+    def test_updated_fields_comment_if_listed(self):
+        extension = create_approved_version().extension
+        nr_comments = extension.review_activity.count()
+        author = extension.authors.first()
+        self.client.force_login(author)
+        url = extension.get_manage_url()
+        file_name1 = 'test_preview_image_0001.png'
+        with open(TEST_FILES_DIR / file_name1, 'rb') as fp1:
+            response = self.client.post(
+                url,
+                {
+                    **POST_DATA,
+                    'form-TOTAL_FORMS': ['1'],
+                    'form-0-source': fp1,
+                    'description': 'new description',
+                    'save': '',
+                },
+            )
+            self.assertEqual(response.status_code, 302, _get_all_form_errors(response))
+        self.assertEqual(extension.review_activity.count(), nr_comments + 1)
+        self.assertEqual(extension.review_activity.last().message, 'updated description, previews')
+
+    def test_updated_fields_no_comment_if_not_listed(self):
+        extension = create_version().extension
+        nr_comments = extension.review_activity.count()
+        author = extension.authors.first()
+        self.client.force_login(author)
+        url = extension.get_manage_url()
+        file_name1 = 'test_preview_image_0001.png'
+        with open(TEST_FILES_DIR / file_name1, 'rb') as fp1:
+            response = self.client.post(
+                url,
+                {
+                    **POST_DATA,
+                    'form-TOTAL_FORMS': ['1'],
+                    'form-0-source': fp1,
+                    'description': 'new description',
+                    'save': '',
+                },
+            )
+            self.assertEqual(response.status_code, 302, _get_all_form_errors(response))
+        self.assertEqual(extension.review_activity.count(), nr_comments)

files/admin.py

@@ -3,10 +3,9 @@ import logging
 from django.conf import settings
 from django.contrib import admin
 from django.template.loader import render_to_string
-from django.urls import reverse
-from django.utils.safestring import mark_safe
 
 from .models import File, FileValidation
+from common.admin import link_to
 import files.signals
 
 logger = logging.getLogger(__name__)
@@ -74,18 +73,35 @@ class FileAdmin(admin.ModelAdmin):
         'date_modified',
         'date_status_changed',
         ('extension', admin.EmptyFieldListFilter),
+        ('version', admin.EmptyFieldListFilter),
+        ('icon_of', admin.EmptyFieldListFilter),
+        ('featured_image_of', admin.EmptyFieldListFilter),
+        ('preview', admin.EmptyFieldListFilter),
     )
     list_display = (
         'original_name',
-        'extension_link',
+        link_to('extension'),
-        'user',
+        link_to('user'),
         'date_created',
         'type',
         'status',
+        link_to('version'),
+        link_to('icon_of'),
+        link_to('featured_image_of'),
+        link_to('preview.extension', 'preview of'),
         'is_ok',
     )
 
-    list_select_related = ('version__extension', 'user', 'extension', 'version', 'validation')
+    list_select_related = (
+        'version__extension',
+        'user',
+        'extension',
+        'version',
+        'validation',
+        'icon_of',
+        'featured_image_of',
+        'preview__extension',
+    )
 
     autocomplete_fields = ['user']
     readonly_fields = (
@@ -155,20 +171,6 @@ class FileAdmin(admin.ModelAdmin):
     inlines = [FileValidationInlineAdmin]
     actions = [schedule_scan, make_thumbnails]
 
-    def extension_link(self, obj):
-        return (
-            mark_safe(
-                '<a href="{}" target="_blank">{}</a>'.format(
-                    reverse('admin:extensions_extension_change', args=(obj.extension_id,)),
-                    obj.extension,
-                )
-            )
-            if obj.extension_id
-            else '-'
-        )
-
-    extension_link.short_description = 'Extension'
-
     def is_ok(self, obj):
         return obj.validation.is_ok if hasattr(obj, 'validation') else None
 

files/static/files/admin/file.css

@@ -9,3 +9,11 @@
     padding-right: 0.5rem;
     padding-left: 0.5rem;
 }
+.field-original_name,
+.field-icon_of,
+.field-featured_image_of,
+.field-preview,
+.field-extension,
+.field-version {
+  word-break: break-word;
+}

users/blender_id.py

@@ -75,7 +75,7 @@ class BIDSession:
         return self._badger_api_session
 
     @classmethod
-    def get_oauth_user_info(cls, oauth_user_id: str) -> OAuthUserInfo:
+    def get_oauth_user_info(cls, oauth_user_id: int) -> OAuthUserInfo:
         """Return OAuthUserInfo record for a given Blender ID.
 
         Used primarily to look up our own user ID associated with an external Blender ID,
@@ -88,71 +88,38 @@ class BIDSession:
         )
 
     @classmethod
-    def get_oauth_token(cls, oauth_user_id: str) -> OAuthToken:
+    def get_oauth_token(cls, oauth_user_id: int) -> OAuthToken:
         """Return OAuthToken for a given ID to be used in authenticated requests to Blender ID."""
         return OAuthToken.objects.filter(oauth_user_id=oauth_user_id).last()
 
-    def get_user_info(self, oauth_user_id: str) -> Dict[str, Any]:
+    def get_badges_url(self, oauth_user_id: int) -> str:
-        """Retrieve user info from Blender ID service using a user-specific OAuth2 session.
-
-        User info is returned in the following format:
-        {
-            "id": 2,
-            "full_name": "Jane Doe",
-            "email": "jane@example.com",
-            "nickname": "janedoe",
-            "roles": {"dev_core": True},
-        }
-        """
-        token = self.get_oauth_token(oauth_user_id)
-        if not token:
-            raise BIDMissingAccessToken(f'No access token found for {oauth_user_id}')
-        session = self._make_session(access_token=token.access_token)
-        resp = session.get(self.settings.url_userinfo)
-        resp.raise_for_status()
-        payload = resp.json()
-        assert isinstance(payload, dict)
-
-        return payload
-
-    def get_avatar_url(self, oauth_user_id: str) -> str:
-        """Return a Blender ID URL to the avatar for a given OAuth ID."""
-        return urljoin(self.settings.url_base, f'api/user/{oauth_user_id}/avatar')
-
-    def get_badges_url(self, oauth_user_id: str) -> str:
         """Return a Blender ID URL to the avatar for a given OAuth ID."""
         return urljoin(self.settings.url_base, f'api/badges/{oauth_user_id}')
 
-    def get_user_by_id_url(self, oauth_user_id: str) -> str:
-        """Return a Blender ID URL for the user with a given OAuth ID."""
-        return urljoin(self.settings.url_base, f'api/user/{oauth_user_id}')
-
     def get_check_user_by_email_url(self, email: str) -> str:
         """Return a Blender ID URL for checking existence of a record with a given email."""
         return urljoin(self.settings.url_base, f'api/check-user/{email}')
 
-    def get_badger_api_url(self, action: str, role: str, oauth_user_id: str) -> str:
+    def get_badger_api_url(self, action: str, role: str, oauth_user_id: int) -> str:
         """Return a Blender ID API URL for granting/revoking roles."""
         assert action in ('grant', 'revoke'), f'{action} is not a known Blender ID API action'
         assert role in (
             'cloud_subscriber',
             'cloud_has_subscription',
             'sprite_fright',
+            'charge',
         ), f'{role} is not a known Blender ID badge'
         return urljoin(self.settings.url_base, f'api/badger/{action}/{role}/{oauth_user_id}')
 
-    def get_avatar(self, oauth_user_id: str) -> Tuple[str, io.BytesIO]:
+    def download_avatar_url(self, avatar_url: str) -> Tuple[str, io.BytesIO]:
-        """Retrieve an avatar from Blender ID service using an OAuth2 session.
+        """Download an avatar from a given URL."""
-
+        resp = self.session.get(avatar_url)
-        Return file name and content of an avatar for the given 'oauth_user_id'.
-        """
-        resp = self.session.get(self.get_avatar_url(oauth_user_id))
         resp.raise_for_status()
 
         name = pathlib.Path(urlparse(resp.url).path).name
         return name, io.BytesIO(resp.content)
 
-    def get_badges(self, oauth_user_id: str) -> Dict[str, Any]:
+    def get_badges(self, oauth_user_id: int) -> Dict[str, Any]:
         """Retrieve badges from Blender ID service using a user-specific OAuth2 session."""
         token = self.get_oauth_token(oauth_user_id)
         if not token:
@@ -165,46 +132,22 @@ class BIDSession:
 
         return badges
 
-    def copy_avatar_from_blender_id(self, user):
+    def copy_image_from_avatar_url(self, user, avatar_url):
-        """
+        """Fetch Blender ID avatar and save it to our storage."""
-        Attempt to retrieve an avatar from Blender ID and save it into our storage.
-
-        If either OAuth info or Blender ID service isn't available, log an error and return.
-        """
-        if not hasattr(user, 'oauth_info'):
-            logger.warning(f'Cannot copy avatar from Blender ID: {user} is missing OAuth info')
-            return
-        oauth_info = user.oauth_info
         try:
-            name, content = self.get_avatar(oauth_info.oauth_user_id)
+            clear_existing_image = avatar_url is None
             if user.image:
                 # Delete the previous file
-                user.image.delete(save=False)
+                user.image.delete(save=clear_existing_image)
-            user.image.save(name, content, save=True)
+            if avatar_url:
-            logger.info(f'Profile image updated for {user}')
+                name, content = self.download_avatar_url(avatar_url)
+                user.image.save(name, content, save=True)
+                logger.info('Profile image updated for pk=%s', user.pk)
         except requests.HTTPError:
             logger.warning(f'Failed to retrieve an image for {user} from Blender ID')
         except Exception:
             logger.exception(f'Failed to copy an image for {user}')
 
-    def update_username(self, user, oauth_user_id):
-        """Update username of a given user, fetching it from Blender ID.
-
-        FIXME(anna): webhook payload doesn't include username, hence this separate method.
-        """
-        try:
-            user_info = self.get_user_info(oauth_user_id)
-            if user_info['nickname'] != user.username:
-                # TODO(anna) handle duplicate usernames
-                user.username = user_info['nickname']
-                user.save(update_fields=['username'])
-        except BIDMissingAccessToken:
-            logger.warning(f'Unable to retrieve username for {user}: no access token')
-        except requests.exceptions.HTTPError:
-            logger.warning(f'Unable to update username for {user}: HTTPError')
-        except Exception:
-            logger.exception(f'Unable to update username for {user}')
-
     def copy_badges_from_blender_id(self, user):
         """
         Attempt to retrieve badges from Blender ID and save them in the user record.
@@ -239,13 +182,6 @@ class BIDSession:
         resp = self.badger_api_session.post(url)
         resp.raise_for_status()
 
-    def get_user_by_id(self, oauth_user_id: str) -> Dict[str, str]:
-        """Get Blender ID user info using the API OAuth token."""
-        url = self.get_user_by_id_url(oauth_user_id=oauth_user_id)
-        resp = self.badger_api_session.get(url)
-        resp.raise_for_status()
-        return resp.json()
-
     def check_user_by_email(self, email: str) -> Dict[str, str]:
         """Check if Blender ID with a given email exists."""
         url = self.get_check_user_by_email_url(email=email)

users/management/commands/copy_avatars.py

@@ -1,23 +0,0 @@
-"""Fetch and save profile images from Blender ID."""
-import logging
-
-from django.core.management.base import BaseCommand
-from django.contrib.auth import get_user_model
-
-User = get_user_model()
-logger = logging.getLogger(__name__)
-logger.setLevel(logging.INFO)
-
-
-class Command(BaseCommand):
-    """Command for fetching and saving images for accounts that don't have any."""
-
-    def handle(self, *args, **options):  # noqa: D102
-        query = User.objects.filter(last_login__isnull=False, profile__image__isnull=True).order_by(
-            '-last_login'
-        )
-        logger.info('%s records to update total', query.count())
-        for user in query:
-            if user.image:
-                continue  # already has an image, skipping
-            user.copy_avatar_from_blender_id()

users/models.py

@@ -18,7 +18,9 @@ logger = logging.getLogger(__name__)
 def user_image_upload_to(instance, filename):
     assert instance.pk
     prefix = 'avatars/'
-    _hash = get_sha256_from_value(instance.pk)
+    # Blender ID avatar URL is based on file hash,
+    # so is the filename taken from that URL, so this combination is unique enough
+    _hash = get_sha256_from_value(str(instance.pk) + filename)
     extension = Path(filename).suffix
     path = Path(prefix, _hash[:2], _hash).with_suffix(extension)
     return path
@@ -91,7 +93,14 @@ class User(TrackChangesMixin, AbstractUser):
         )
         self.is_active = False
         self.date_deletion_requested = parse_datetime(date_deletion_requested)
-        self.save(update_fields=['is_active', 'date_deletion_requested'])
+        self.is_subscribed_to_notification_emails = False
+        self.save(
+            update_fields=[
+                'is_active',
+                'date_deletion_requested',
+                'is_subscribed_to_notification_emails',
+            ]
+        )
 
     @transaction.atomic
     def anonymize_or_delete(self):

users/signals.py

@@ -40,7 +40,8 @@ def update_user(
     instance.confirmed_email_at = parse_datetime(oauth_info.get('confirmed_email_at') or '')
     instance.save()
 
-    bid.copy_avatar_from_blender_id(user=instance)
+    if oauth_info.get('avatar_url'):
+        bid.copy_image_from_avatar_url(user=instance, avatar_url=oauth_info['avatar_url'])
     bid.copy_badges_from_blender_id(user=instance)
 
 

users/tests/test_webhooks.py

@@ -44,11 +44,14 @@ class TestBlenderIDWebhook(TestCase):
     fixtures = ['dev']
     webhook_payload = {
         'avatar_changed': False,
+        'avatar_url': None,
         'email': 'newmail@example.com',
         'full_name': 'Иван Васильевич Doe',
         'id': 2,
         'old_email': 'mail@example.com',
         'roles': [],
+        'nickname': 'ivandoe',
+        'old_nickname': 'old_ivandoe',
     }
 
     def setUp(self):
@@ -59,6 +62,7 @@ class TestBlenderIDWebhook(TestCase):
         self.user = OAuthUserFactory(
             email='mail@example.com',
             oauth_info__oauth_user_id='2',
+            username='very-original-username',
             oauth_tokens__oauth_user_id='2',
             oauth_tokens__access_token='testaccesstoken',
             oauth_tokens__refresh_token='testrefreshtoken',
@@ -116,6 +120,7 @@ class TestBlenderIDWebhook(TestCase):
         user = User.objects.get(id=self.user.pk)
         self.assertEqual(user.full_name, 'Иван Васильевич Doe')
         self.assertEqual(user.email, 'newmail@example.com')
+        self.assertEqual(user.username, 'ivandoe')
         self.assertEqual(
             user.badges,
             {
@@ -138,23 +143,10 @@ class TestBlenderIDWebhook(TestCase):
             response = self.client.post(
                 self.url, body, content_type='application/json', **prepare_hmac_header(body)
             )
-            self.assertRegex(logs.output[0], 'Cannot update user: no OAuth info found for ID 999')
+            self.assertRegex(
-
+                logs.output[0],
-        self.assertEqual(response.status_code, 204)
+                'WARNING:users.views.webhooks:Skipping user-modified: no OAuth info found for ID 999',
-
-    @responses.activate
-    def test_user_modified_logs_errors_when_blender_id_user_info_broken(self):
-        body = self.webhook_payload
-        # Mock a "broken" user info response
-        responses.replace(
-            responses.GET, f'{BLENDER_ID_BASE_URL}api/me', status=403, body='Unauthorized'
-        )
-
-        with self.assertLogs('users.blender_id', level='WARNING') as logs:
-            response = self.client.post(
-                self.url, body, content_type='application/json', **prepare_hmac_header(body)
             )
-            self.assertRegex(logs.output[0], 'Unable to update username for ', logs.output[0])
 
         self.assertEqual(response.status_code, 204)
 
@@ -163,6 +155,7 @@ class TestBlenderIDWebhook(TestCase):
         body = {
             **self.webhook_payload,
             'avatar_changed': True,
+            'avatar_url': 'http://id.local:8000/media/avatar/fo/ob/foobar_128x128.jpg',
         }
 
         with self.assertLogs('users.blender_id', level='INFO') as logs:
@@ -228,11 +221,14 @@ class TestIntegrityErrors(TransactionTestCase):
     maxDiff = None
     webhook_payload = {
         'avatar_changed': False,
+        'avatar_url': None,
         'email': 'newmail@example.com',
         'full_name': 'Иван Васильевич Doe',
         'id': 2,
         'old_email': 'mail@example.com',
         'roles': [],
+        'nickname': 'ivandoe',
+        'old_nickname': 'ivandoe',
     }
 
     def setUp(self):
@@ -242,6 +238,7 @@ class TestIntegrityErrors(TransactionTestCase):
         # Prepare a user
         self.user = OAuthUserFactory(
             email='mail@example.com',
+            username='very-original-username',
             oauth_info__oauth_user_id='2',
             oauth_tokens__oauth_user_id='2',
             oauth_tokens__access_token='testaccesstoken',
@@ -268,3 +265,50 @@ class TestIntegrityErrors(TransactionTestCase):
         # Email was not updated
         self.assertEqual(self.user.email, 'mail@example.com')
         self.assertEqual(another_user.email, 'jane@example.com')
+
+    @responses.activate
+    def test_user_modified_does_not_allow_duplicate_username(self):
+        # Same email as in the webhook payload for another user
+        another_user = OAuthUserFactory(email='somename@example.com', username='thejane')
+        body = {
+            **self.webhook_payload,
+            'nickname': 'thejane',
+        }
+
+        with self.assertLogs('users.views.webhooks', level='ERROR') as logs:
+            response = self.client.post(
+                self.url, body, content_type='application/json', **prepare_hmac_header(body)
+            )
+            self.assertRegex(logs.output[0], 'Unable to update username for')
+
+        self.assertEqual(response.status_code, 204)
+        self.assertEqual(response.content, b'')
+        # Username was not updated
+        self.assertEqual(self.user.username, 'very-original-username')
+        self.assertEqual(another_user.username, 'thejane')
+
+    @responses.activate
+    def test_user_modified_does_not_allow_duplicate_email_and_username(self):
+        # Same email as in the webhook payload for another user
+        another_user = OAuthUserFactory(email='jane@example.com', username='thejane')
+        body = {
+            **self.webhook_payload,
+            'email': 'jane@example.com',
+            'nickname': 'thejane',
+        }
+
+        with self.assertLogs('users.views.webhooks', level='ERROR') as logs:
+            response = self.client.post(
+                self.url, body, content_type='application/json', **prepare_hmac_header(body)
+            )
+            self.assertRegex(logs.output[0], 'Unable to update email for')
+            self.assertRegex(logs.output[1], 'Unable to update username for')
+
+        self.assertEqual(response.status_code, 204)
+        self.assertEqual(response.content, b'')
+        # Email was not updated
+        self.assertEqual(self.user.email, 'mail@example.com')
+        self.assertEqual(another_user.email, 'jane@example.com')
+        # Username was not updated
+        self.assertEqual(self.user.username, 'very-original-username')
+        self.assertEqual(another_user.username, 'thejane')

users/tests/util.py

@@ -8,12 +8,6 @@ User = get_user_model()
 def mock_blender_id_responses() -> None:
     """Set up mock responses of Blender ID service."""
     base_url = settings.BLENDER_ID['BASE_URL']
-    responses.add(
-        responses.GET,
-        f'{base_url}api/user/2/avatar',
-        status=302,
-        headers={'Location': f'{base_url}media/cache/1c/da/1cda54d605799b1f4b0dc080.jpg'},
-    )
     responses.add(
         responses.GET,
         f'{base_url}api/badges/2',
@@ -50,7 +44,7 @@ def mock_blender_id_responses() -> None:
     with open('common/static/common/images/blank-profile-pic.png', 'rb') as out:
         responses.add(
             responses.GET,
-            'http://id.local:8000/media/cache/1c/da/1cda54d605799b1f4b0dc080.jpg',
+            f'{base_url}media/avatar/fo/ob/foobar_128x128.jpg',
             body=out,
             stream=True,
         )

users/views/webhooks.py

@@ -32,13 +32,16 @@ def user_modified_webhook(request: HttpRequest) -> HttpResponse:
     Payload is expected to have the following format:
         {
             "avatar_changed": false,
+            "avatar_url": null,
+            "confirmed_email_at": "2022-09-01T13:47:00+00:00",
+            "date_deletion_requested": "2020-01-25T09:51:00+00:00",
             "email": "newmail@example.com",
             "full_name": "John Doe",
             "id": 2,
+            "nickname": "some-nickname",
             "old_email": "mail@example.com",
+            "old_nickname": "some-old-nickname",
             "roles": ["role1", "role2"],
-            "confirmed_email_at": "2022-09-01T13:47:00+00:00",
-            "date_deletion_requested": "2020-01-25T09:51:00+00:00",
         }
     """
     hmac_secret = settings.BLENDER_ID['WEBHOOK_USER_MODIFIED_SECRET']
@@ -74,6 +77,13 @@ def user_modified_webhook(request: HttpRequest) -> HttpResponse:
         logger.exception('Malformed JSON received')
         return HttpResponseBadRequest('Malformed JSON')
 
+    oauth_user_id = payload['id']
+    try:
+        bid.get_oauth_user_info(oauth_user_id)
+    except ObjectDoesNotExist:
+        logger.warning(f'Skipping user-modified: no OAuth info found for ID {oauth_user_id}')
+        return HttpResponse(status=204)
+
     handle_user_modified(payload)
 
     return HttpResponse(status=204)
@@ -82,7 +92,7 @@ def user_modified_webhook(request: HttpRequest) -> HttpResponse:
 @background()
 def handle_user_modified(payload: Dict[Any, Any]) -> None:
     """Handle payload of a user modified webhook, updating User when necessary."""
-    oauth_user_id = str(payload['id'])
+    oauth_user_id = payload['id']
     try:
         oauth_user_info = bid.get_oauth_user_info(oauth_user_id)
     except ObjectDoesNotExist:
@@ -90,17 +100,20 @@ def handle_user_modified(payload: Dict[Any, Any]) -> None:
         return
 
     user = oauth_user_info.user
+    args = [oauth_user_id, user.pk]
 
     if payload.get('date_deletion_requested'):
         user.request_deletion(payload['date_deletion_requested'])
         return
 
-    try:
+    for _from, _to in (('email', 'email'), ('nickname', 'username')):
-        if payload['email'] != user.email:
+        if payload[_from] == getattr(user, _to):
-            user.email = payload['email']
+            continue
-            user.save(update_fields=['email'])
+        try:
-    except IntegrityError:
+            setattr(user, _to, payload[_from])
-        logger.exception(f'Unable to update email for {user}: duplicate email')
+            user.save(update_fields=[_to])
+        except IntegrityError:
+            logger.exception('Unable to update %s for OAuth ID=%s pk=%s', _to, *args)
 
     update_fields = set()
     if payload['full_name'] != user.full_name:
@@ -115,10 +128,7 @@ def handle_user_modified(payload: Dict[Any, Any]) -> None:
         user.save(update_fields=update_fields)
 
     if payload.get('avatar_changed') or not user.image:
-        bid.copy_avatar_from_blender_id(user=user)
+        bid.copy_image_from_avatar_url(user=user, avatar_url=payload['avatar_url'])
-
-    # Attempt to update the username
-    bid.update_username(user, oauth_user_id)
 
     # Attempt to update the badges
     bid.copy_badges_from_blender_id(user=user)