Skip offering selection if there is only one

closes #258

src/servala/frontend/views/service.py

@@ -66,14 +66,33 @@ class ServiceDetailView(OrganizationViewMixin, DetailView):
     def get_queryset(self):
         return self.request.organization.get_visible_services()
 
-    def get_context_data(self, **kwargs):
+    @cached_property
-        context = super().get_context_data(**kwargs)
+    def visible_offerings(self):
-        offerings = context["service"].offerings.all()
+        offerings = self.object.offerings.all()
         if self.request.organization.limit_cloudproviders.exists():
             offerings = offerings.filter(
                 provider__in=self.request.organization.limit_cloudproviders.all()
             )
-        context["visible_offerings"] = offerings.select_related("provider")
+        return offerings
+
+    def get(self, request, *args, **kwargs):
+        self.object = self.get_object()
+
+        # If there's exactly one offering, skip provider selection and go directly to it
+        if self.visible_offerings.count() == 1:
+            offering = self.visible_offerings.first()
+            return redirect(
+                "frontend:organization.offering",
+                organization=self.request.organization.slug,
+                slug=self.object.slug,
+                pk=offering.pk,
+            )
+
+        return super().get(request, *args, **kwargs)
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["visible_offerings"] = self.visible_offerings.select_related("provider")
         return context
 
 

src/tests/test_views.py

@@ -1,5 +1,6 @@
 import pytest
 
+from servala.core.models.service import CloudProvider, ServiceOffering
 
 @pytest.mark.parametrize(
     "url,redirect",
@@ -45,3 +46,103 @@ def test_organization_linked_in_sidebar(
     assert response.status_code == 200
     assert organization.name in response.content.decode()
     assert other_organization.name not in response.content.decode()
+
+
+@pytest.mark.django_db
+def test_service_detail_redirects_with_single_offering(
+    client, org_owner, organization, test_service, test_service_offering
+):
+    client.force_login(org_owner)
+    url = f"/org/{organization.slug}/services/{test_service.slug}/"
+    response = client.get(url)
+
+    assert response.status_code == 302
+    expected_url = f"/org/{organization.slug}/services/{test_service.slug}/offering/{test_service_offering.pk}/"
+    assert response.url == expected_url
+
+
+@pytest.mark.django_db
+def test_service_detail_shows_multiple_offerings(
+    client, org_owner, organization, test_service, test_service_offering
+):
+    second_provider = CloudProvider.objects.create(
+        name="AWS", description="Amazon Web Services"
+    )
+    second_offering = ServiceOffering.objects.create(
+        service=test_service,
+        provider=second_provider,
+        description="Redis on AWS",
+        osb_plan_id="test-plan-456",
+    )
+
+    client.force_login(org_owner)
+    url = f"/org/{organization.slug}/services/{test_service.slug}/"
+    response = client.get(url)
+
+    assert response.status_code == 200
+    content = response.content.decode()
+
+    assert test_service_offering.provider.name in content
+    assert second_offering.provider.name in content
+    assert "Create Instance" in content
+
+
+@pytest.mark.django_db
+def test_service_detail_respects_cloud_provider_restrictions(
+    client, org_owner, organization, test_service, test_service_offering
+):
+    second_provider = CloudProvider.objects.create(
+        name="AWS", description="Amazon Web Services"
+    )
+    ServiceOffering.objects.create(
+        service=test_service,
+        provider=second_provider,
+        description="Redis on AWS",
+        osb_plan_id="test-plan-456",
+    )
+    organization.origin.limit_cloudproviders.add(test_service_offering.provider)
+
+    client.force_login(org_owner)
+    url = f"/org/{organization.slug}/services/{test_service.slug}/"
+    response = client.get(url)
+
+    assert response.status_code == 302
+    expected_url = f"/org/{organization.slug}/services/{test_service.slug}/offering/{test_service_offering.pk}/"
+    assert response.url == expected_url
+
+
+@pytest.mark.django_db
+def test_service_detail_no_redirect_with_restricted_multiple_offerings(
+    client, org_owner, organization, test_service, test_service_offering
+):
+    second_provider = CloudProvider.objects.create(
+        name="AWS", description="Amazon Web Services"
+    )
+    second_offering = ServiceOffering.objects.create(
+        service=test_service,
+        provider=second_provider,
+        description="Redis on AWS",
+        osb_plan_id="test-plan-456",
+    )
+    third_provider = CloudProvider.objects.create(
+        name="Azure", description="Microsoft Azure"
+    )
+    third_offering = ServiceOffering.objects.create(
+        service=test_service,
+        provider=third_provider,
+        description="Redis on Azure",
+        osb_plan_id="test-plan-789",
+    )
+    organization.origin.limit_cloudproviders.add(
+        test_service_offering.provider, second_provider
+    )
+
+    client.force_login(org_owner)
+    url = f"/org/{organization.slug}/services/{test_service.slug}/"
+    response = client.get(url)
+
+    assert response.status_code == 200
+    content = response.content.decode()
+    assert test_service_offering.provider.name in content
+    assert second_offering.provider.name in content
+    assert third_offering.provider.name not in content