✨(backend) add public endpoint /api/v1.0/config/

Add public endpoint /api/v1.0/config/ to
share some public configuration values
with the frontend.

src/backend/core/api/viewsets.py

@@ -1,5 +1,6 @@
 """API endpoints"""
 
+from django.conf import settings
 from django.contrib.postgres.search import TrigramSimilarity
 from django.db.models import Func, Max, OuterRef, Q, Subquery, Value
 from django.db.models.functions import Coalesce
@@ -12,8 +13,10 @@ from rest_framework import (
     pagination,
     response,
     throttling,
+    views,
     viewsets,
 )
+from rest_framework.permissions import AllowAny
 
 from core import models
 
@@ -491,3 +494,21 @@ class InvitationViewset(
                 .distinct()
             )
         return queryset
+
+
+class ConfigView(views.APIView):
+    """API ViewSet for sharing some public settings."""
+
+    permission_classes = [AllowAny]
+
+    def get(self, request):
+        """
+        GET /api/v1.0/config/
+            Return a dictionary of public settings.
+        """
+        array_settings = ["LANGUAGES", "FEATURES"]
+        dict_settings = {}
+        for setting in array_settings:
+            dict_settings[setting] = getattr(settings, setting)
+
+        return response.Response(dict_settings)

src/backend/core/tests/test_api_config.py

@@ -0,0 +1,39 @@
+"""
+Test users API endpoints in the People core app.
+"""
+
+import pytest
+from rest_framework.status import (
+    HTTP_200_OK,
+)
+from rest_framework.test import APIClient
+
+from core import factories
+
+pytestmark = pytest.mark.django_db
+
+
+def test_api_config_anonymous():
+    """Anonymous users should be allowed to get the configuration."""
+    client = APIClient()
+    response = client.get("/api/v1.0/config/")
+    assert response.status_code == HTTP_200_OK
+    assert response.json() == {
+        "LANGUAGES": [["en-us", "English"], ["fr-fr", "French"]],
+        "FEATURES": {"TEAMS": True},
+    }
+
+
+def test_api_config_authenticated():
+    """Authenticated users should be allowed to get the configuration."""
+    user = factories.UserFactory()
+
+    client = APIClient()
+    client.force_login(user)
+
+    response = client.get("/api/v1.0/config/")
+    assert response.status_code == HTTP_200_OK
+    assert response.json() == {
+        "LANGUAGES": [["en-us", "English"], ["fr-fr", "French"]],
+        "FEATURES": {"TEAMS": True},
+    }

src/backend/people/api_urls.py

@@ -44,4 +44,5 @@ urlpatterns = [
         ),
     ),
     path(f"api/{settings.API_VERSION}/", include("mailbox_manager.urls")),
+    path(f"api/{settings.API_VERSION}/config/", viewsets.ConfigView.as_view()),
 ]

src/backend/people/settings.py

@@ -371,6 +371,12 @@ class Base(Configuration):
         environ_prefix=None,
     )
 
+    FEATURES = {
+        "TEAMS": values.BooleanValue(
+            default=True, environ_name="FEATURE_TEAMS", environ_prefix=None
+        ),
+    }
+
     # pylint: disable=invalid-name
     @property
     def ENVIRONMENT(self):