From f117312b0253f4826d8ccc269ca7f4dc2b46d782 Mon Sep 17 00:00:00 2001
From: Benjamin Dauvergne <bdauvergne@entrouvert.com>
Date: Thu, 4 Oct 2018 23:33:09 +0200
Subject: [PATCH 2/6] users: add cronjob to delete users (#24430)

---
 tests/test_users.py | 39 +++++++++++++++++++++++++++++++++++++
 wcs/users.py        | 47 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+)

diff --git a/tests/test_users.py b/tests/test_users.py
index ca039e19..6f6f2a29 100644
--- a/tests/test_users.py
+++ b/tests/test_users.py
@@ -77,3 +77,42 @@ def test_user_formdef_getattr():
 
     with pytest.raises(AttributeError):
         user.xxx
+
+
+def test_clean_deleted_users():
+    from wcs.formdef import FormDef
+    from wcs.qommon import storage as st
+
+    User = pub.user_class
+
+    User.wipe()
+    FormDef.wipe()
+
+    formdef = FormDef()
+    formdef.name = 'foobar'
+    formdef.url_name = 'foobar'
+    formdef.fields = []
+    formdef.store()
+    data_class = formdef.data_class()
+
+    user1 = User()
+    user1.name = 'Pierre'
+    user1.deleted = True
+    user1.store()
+
+    user2 = User()
+    user2.name = 'Jean'
+    user2.deleted = True
+    user2.store()
+
+    formdata1 = data_class()
+    formdata1.user_id = user1.id
+    formdata1.store()
+
+    assert User.count() == 2
+
+    User.clean_deleted_users()
+
+    assert User.count() == 1
+    assert len(User.select([st.Equal('name', 'Pierre')])) == 1
+    assert len(User.select([st.Equal('name', 'Jean')])) == 0
diff --git a/wcs/users.py b/wcs/users.py
index c769ff60..04fab6d8 100644
--- a/wcs/users.py
+++ b/wcs/users.py
@@ -14,13 +14,18 @@
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, see <http://www.gnu.org/licenses/>.
 
+from quixote import get_publisher
+
 from qommon import _
 from qommon.misc import simplify
 from qommon.storage import StorableObject
 from qommon import get_cfg
+from qommon.cron import CronJob
 import wcs.qommon.storage as st
 
 from qommon.substitution import Substitutions, invalidate_substitution_cache
+from qommon.publisher import get_publisher_class
+
 
 class User(StorableObject):
     _names = 'users'
@@ -221,7 +226,49 @@ class User(StorableObject):
     def get_full_name(self):
         return self.display_name
 
+    @classmethod
+    def clean_deleted_users(cls):
+        # really delete users without any form
+        if get_publisher().is_using_postgresql():
+            cls.clean_deleted_users_sql()
+        else:
+            cls.clean_deleted_users_pickle()
+
+    @classmethod
+    def clean_deleted_users_sql(cls):
+        from wcs.sql import AnyFormData
+        from wcs.formdef import FormDef
+
+        deleted = cls.select([st.Equal('deleted', True)])
+        deleted_ids = set(str(u.id) for u in deleted)
+        active_ids = set()
+        if FormDef.count():
+            # without any FormDef global views are not created.
+            active_ids = set(f.user_id for f in AnyFormData.select(
+                [st.Contains('user_id', deleted_ids)], iterator=True))
+        to_delete_ids = deleted_ids - active_ids
+        for user_id in to_delete_ids:
+            cls.remove_object(user_id)
+
+    @classmethod
+    def clean_deleted_users_pickle(cls):
+        from wcs.formdef import FormDef
+
+        deleted = cls.select([st.Equal('deleted', True)])
+        deleted_ids = set(str(u.id) for u in deleted)
+        active_ids = set()
+        for formdef in FormDef.select():
+            for formdata in formdef.data_class().select([st.Contains('user_id', deleted_ids)], iterator=True):
+                active_ids.add(str(formdata.user_id))
+        to_delete_ids = deleted_ids - active_ids
+        for user_id in to_delete_ids:
+            cls.remove_object(user_id)
+
 
 Substitutions.register('session_user_display_name', category=N_('User'), comment=N_('Session User Display Name'))
 Substitutions.register('session_user_email', category=N_('User'), comment=N_('Session User Email'))
 Substitutions.register_dynamic_source(User)
+
+if get_publisher_class():
+    # clean deleted users hourly
+    get_publisher_class().register_cronjob(CronJob(User.clean_deleted_users, minutes=[20], hours=[6]))
-- 
2.18.0