[Fix readthedocs#3182] Better user deletion

readthedocs/core/signals.py

@@ -5,14 +5,19 @@
 import logging
 
 from corsheaders import signals
+from django.contrib.auth import get_user_model
+from django.db.models.signals import pre_delete
 from django.dispatch import Signal
-from django.db.models import Q
+from django.db.models import Q, Count
+from django.dispatch import receiver
 from future.backports.urllib.parse import urlparse
 
+from readthedocs.oauth.tasks import bulk_delete_oauth_remote_organizations
 from readthedocs.projects.models import Project, Domain
-
+from readthedocs.projects.tasks import bulk_delete_projects
 
 log = logging.getLogger(__name__)
+User = get_user_model()
 
 WHITELIST_URLS = ['/api/v2/footer_html', '/api/v2/search', '/api/v2/docsearch']
 
@@ -62,4 +67,25 @@ def decide_if_cors(sender, request, **kwargs):  # pylint: disable=unused-argumen
 
     return False
 
+
+@receiver(pre_delete, sender=User)
+def delete_projects_and_organizations(instance, *args, **kwargs):
+    # Projects id where user is the only owner
+
+    # Here we count the owner list from the projects that the user own
+    # Then exclude the projects where there are more than one owner
+    projects_id = (instance.projects.all().annotate(num_users=Count('users'))
+                                          .exclude(num_users__gt=1)
+                                          .values_list('id', flat=True))
+
+    # Here we count the users list from the organization that the user belong
+    # Then exclude the organizations where there are more than one user
+    oauth_organizations_id = (instance.oauth_organizations.annotate(num_users=Count('users'))
+                                                          .exclude(num_users__gt=1)
+                                                          .values_list('id', flat=True))
+
+    bulk_delete_projects.delay(projects_id)
+    bulk_delete_oauth_remote_organizations.delay(oauth_organizations_id)
+
+
 signals.check_request_enabled.connect(decide_if_cors)

readthedocs/oauth/tasks.py

@@ -1,12 +1,14 @@
 """Tasks for OAuth services"""
 
 from __future__ import absolute_import
+from celery import task
 from django.contrib.auth.models import User
 from djcelery import celery as celery_app
 
 from readthedocs.core.utils.tasks import PublicTask
 from readthedocs.core.utils.tasks import permission_check
 from readthedocs.core.utils.tasks import user_id_matches
+from readthedocs.oauth.models import RemoteOrganization
 from .services import registry
 
 
@@ -21,5 +23,9 @@ def run_public(self, user_id):
             for service in service_cls.for_user(user):
                 service.sync()
 
+@task()
+def bulk_delete_oauth_remote_organizations(organizations_id):
+    RemoteOrganization.objects.filter(id__in=organizations_id).delete()
+
 
 sync_remote_repositories = celery_app.tasks[SyncRemoteRepositories.name]

readthedocs/projects/tasks.py

@@ -984,3 +984,8 @@ def clear_html_artifacts(version):
     if isinstance(version, int):
         version = Version.objects.get(pk=version)
     remove_dir(version.project.rtd_build_path(version=version.slug))
+
+
+@task()
+def bulk_delete_projects(projects_id):
+    Project.objects.filter(id__in=projects_id).delete()

readthedocs/templates/profiles/private/delete_account.html

@@ -12,6 +12,8 @@
   <form method="POST" action=".">
     {% csrf_token %}
     {{ form }}
+    <br>
+    <strong>Be careful! This can not be undone!</strong>
     <input type="submit" name="submit" value="{% trans "Delete Account" %}" id="submit"/>
   </form>
 {% endblock %}