Add Sites Renderer service to Docker Compose and implement public endpoint for site definitions

- Introduced `igny8_sites` service in `docker-compose.app.yml` for serving deployed public sites.
- Updated `SitesRendererAdapter` to construct deployment URLs dynamically based on environment variables.
- Added `SiteDefinitionView` to provide a public API endpoint for retrieving deployed site definitions.
- Enhanced `loadSiteDefinition` function to prioritize API calls for site definitions over filesystem access.
- Updated frontend to utilize the new API endpoint for loading site definitions.

backend/igny8_core/modules/publisher/urls.py

@@ -9,6 +9,7 @@ from igny8_core.modules.publisher.views import (
     PublishingRecordViewSet,
     DeploymentRecordViewSet,
     PublisherViewSet,
+    SiteDefinitionView,
 )
 
 router = DefaultRouter()
@@ -19,5 +20,7 @@ router.register(r'', PublisherViewSet, basename='publisher')
 
 urlpatterns = [
     path('', include(router.urls)),
+    # Public endpoint for Sites Renderer
+    path('sites/<int:site_id>/definition/', SiteDefinitionView.as_view(), name='site-definition'),
 ]
 

backend/igny8_core/modules/publisher/views.py

@@ -2,9 +2,13 @@
 Publisher ViewSet
 Phase 5: Sites Renderer & Publishing
 """
+import json
+import os
+from pathlib import Path
 from rest_framework import status, viewsets
 from rest_framework.decorators import action
 from rest_framework.response import Response
+from rest_framework.views import APIView
 
 from igny8_core.api.base import SiteSectorModelViewSet
 from igny8_core.api.permissions import IsAuthenticatedAndActive, IsEditorOrAbove
@@ -196,3 +200,76 @@ class PublisherViewSet(viewsets.ViewSet):
                 request
             )
 
+
+class SiteDefinitionView(APIView):
+    """
+    Public endpoint to serve deployed site definitions.
+    Used by Sites Renderer to load site definitions.
+    No authentication required for public sites.
+    """
+    permission_classes = []  # Public endpoint
+    
+    def get(self, request, site_id):
+        """
+        Get deployed site definition.
+        
+        GET /api/v1/publisher/sites/{site_id}/definition/
+        """
+        sites_data_path = os.getenv('SITES_DATA_PATH', '/data/app/sites-data')
+        
+        # Try to find latest deployed version
+        site_dir = Path(sites_data_path) / 'clients' / str(site_id)
+        
+        if not site_dir.exists():
+            return error_response(
+                f'Site {site_id} not found',
+                status.HTTP_404_NOT_FOUND,
+                request
+            )
+        
+        # Look for latest version (check for 'latest' symlink or highest version number)
+        latest_path = site_dir / 'latest' / 'site.json'
+        if latest_path.exists():
+            try:
+                with open(latest_path, 'r', encoding='utf-8') as f:
+                    definition = json.load(f)
+                return Response(definition, status=status.HTTP_200_OK)
+            except Exception as e:
+                return error_response(
+                    f'Failed to load site definition: {str(e)}',
+                    status.HTTP_500_INTERNAL_SERVER_ERROR,
+                    request
+                )
+        
+        # Fallback: find highest version number
+        version_dirs = [d for d in site_dir.iterdir() if d.is_dir() and d.name.startswith('v')]
+        if not version_dirs:
+            return error_response(
+                f'No deployed versions found for site {site_id}',
+                status.HTTP_404_NOT_FOUND,
+                request
+            )
+        
+        # Sort by version number (extract number from 'v1', 'v2', etc.)
+        try:
+            version_dirs.sort(key=lambda d: int(d.name[1:]) if d.name[1:].isdigit() else 0, reverse=True)
+            latest_version_dir = version_dirs[0]
+            site_json_path = latest_version_dir / 'site.json'
+            
+            if site_json_path.exists():
+                with open(site_json_path, 'r', encoding='utf-8') as f:
+                    definition = json.load(f)
+                return Response(definition, status=status.HTTP_200_OK)
+        except Exception as e:
+            return error_response(
+                f'Failed to load site definition: {str(e)}',
+                status.HTTP_500_INTERNAL_SERVER_ERROR,
+                request
+            )
+        
+        return error_response(
+            f'Site definition not found for site {site_id}',
+            status.HTTP_404_NOT_FOUND,
+            request
+        )
+