Organizer-level plugins (#5305)

* Add version notes to the docs

* Adapt signal handling

* Add UI

* Add API

* API and tests

* Fix registry

* Update doc/development/api/plugins.rst

Co-authored-by: Felix Rindt <felix@rindt.me>

* Fix failing tests

* Apply suggestions from code review

Co-authored-by: Richard Schreiber <schreiber@rami.io>

* Update src/pretix/control/templates/pretixcontrol/organizers/plugin_events.html

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/control/templates/pretixcontrol/organizers/plugins.html

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/control/templates/pretixcontrol/organizers/plugins.html

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/control/navigation.py

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/control/urls.py

Co-authored-by: luelista <weller@rami.io>

* Apply suggestion from @wiffbi

* REbase migration

* Fix review note

* Fix test cases

* Remove plugin from all events if disabled on org level

* Update doc/development/api/plugins.rst

* Unify registries

* Rebase migration

---------

Co-authored-by: Felix Rindt <felix@rindt.me>
Co-authored-by: Richard Schreiber <schreiber@rami.io>
Co-authored-by: luelista <weller@rami.io>

src/tests/api/test_organizers.py

@@ -19,14 +19,19 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
+import zoneinfo
+from datetime import datetime
+
 import pytest
 from django.core.files.base import ContentFile
+from django_scopes import scopes_disabled
 from tests.const import SAMPLE_PNG
 
 TEST_ORGANIZER_RES = {
     "name": "Dummy",
     "slug": "dummy",
-    "public_url": "http://example.com/dummy/"
+    "public_url": "http://example.com/dummy/",
+    "plugins": [],
 }
 
 
@@ -45,24 +50,57 @@ def test_organizer_detail(token_client, organizer):
 
 
 @pytest.mark.django_db
-def test_get_settings(token_client, organizer):
-    organizer.settings.event_list_type = "week"
-    resp = token_client.get(
-        '/api/v1/organizers/{}/settings/'.format(organizer.slug,),
+def test_organizer_patch(token_client, organizer):
+    with scopes_disabled():
+        # An event needs to exist for the backwards-compatibility mechanism in get_all_plugins to trigger
+        event = organizer.events.create(
+            name="Event", slug="e2", live=True,
+            date_from=datetime(2020, 1, 10, 16, 0, tzinfo=zoneinfo.ZoneInfo("UTC")),
+            date_to=datetime(2020, 1, 10, 17, 0, tzinfo=zoneinfo.ZoneInfo("UTC")),
+        )
+    resp = token_client.patch(
+        '/api/v1/organizers/{}/'.format(organizer.slug),
+        {
+            'slug': 'willbeignored',
+            'name': 'Willbeignored',
+            'plugins': ['tests.testdummyorga', 'tests.testdummyhybrid']
+        },
+        format='json',
     )
     assert resp.status_code == 200
-    assert resp.data['event_list_type'] == "week"
+    assert resp.data['slug'] == 'dummy'
+    assert resp.data['name'] == 'Dummy'
+    assert set(resp.data['plugins']) == {'tests.testdummyorga', 'tests.testdummyhybrid'}
 
-    resp = token_client.get(
-        '/api/v1/organizers/{}/settings/?explain=true'.format(organizer.slug),
+    resp = token_client.patch(
+        '/api/v1/organizers/{}/'.format(organizer.slug),
+        {
+            'slug': 'willbeignored',
+            'name': 'Willbeignored',
+            'plugins': ['pretix.plugins.statistics']
+        },
+        format='json',
+    )
+    assert resp.status_code == 400
+    assert resp.data == {
+        "plugins": ["Plugin cannot be enabled on this level: 'pretix.plugins.statistics'."]
+    }
+
+    event.plugins = "tests.testdummyhybrid,tests.testdummy"
+    event.save()
+    resp = token_client.patch(
+        '/api/v1/organizers/{}/'.format(organizer.slug),
+        {
+            'slug': 'willbeignored',
+            'name': 'Willbeignored',
+            'plugins': ['tests.testdummyorga']
+        },
+        format='json',
     )
     assert resp.status_code == 200
-    assert resp.data['event_list_type'] == {
-        "value": "week",
-        "label": "Default overview style",
-        "help_text": "If your event series has more than 50 dates in the future, only the month or week calendar can be used.",
-        "readonly": False,
-    }
+
+    event.refresh_from_db()
+    assert event.plugins == "tests.testdummy"
 
 
 @pytest.mark.django_db