Enhance API documentation and schema management by implementing explicit tag configurations for Swagger and ReDoc. Introduce postprocessing hooks to filter auto-generated tags, ensuring only defined tags are used. Update viewsets across various modules to utilize the new tagging system, improving clarity and organization in API documentation.

backend/igny8_core/api/schema_extensions.py

@@ -7,6 +7,52 @@ from drf_spectacular.plumbing import build_bearer_security_scheme_object
 from drf_spectacular.utils import extend_schema, OpenApiResponse
 from rest_framework import status
 
+# Explicit tags we want to keep (from SPECTACULAR_SETTINGS)
+EXPLICIT_TAGS = {'Authentication', 'Planner', 'Writer', 'System', 'Billing'}
+
+
+def postprocess_schema_filter_tags(result, generator, request, public):
+    """
+    Postprocessing hook to remove auto-generated tags and keep only explicit tags.
+    This prevents duplicate tags from URL patterns (auth, planner, etc.)
+    """
+    # First, filter tags from all paths (operations)
+    if 'paths' in result:
+        for path, methods in result['paths'].items():
+            for method, operation in methods.items():
+                if isinstance(operation, dict) and 'tags' in operation:
+                    # Keep only explicit tags from the operation
+                    filtered_tags = [
+                        tag for tag in operation['tags']
+                        if tag in EXPLICIT_TAGS
+                    ]
+                    
+                    # If no explicit tags found, infer from path
+                    if not filtered_tags:
+                        if '/auth/' in path or '/api/v1/auth/' in path:
+                            filtered_tags = ['Authentication']
+                        elif '/planner/' in path or '/api/v1/planner/' in path:
+                            filtered_tags = ['Planner']
+                        elif '/writer/' in path or '/api/v1/writer/' in path:
+                            filtered_tags = ['Writer']
+                        elif '/system/' in path or '/api/v1/system/' in path:
+                            filtered_tags = ['System']
+                        elif '/billing/' in path or '/api/v1/billing/' in path:
+                            filtered_tags = ['Billing']
+                    
+                    operation['tags'] = filtered_tags
+    
+    # Now filter the tags list - keep only explicit tag definitions
+    # The tags list contains tag definitions with 'name' and 'description'
+    if 'tags' in result and isinstance(result['tags'], list):
+        # Keep only tags that match our explicit tag names
+        result['tags'] = [
+            tag for tag in result['tags']
+            if isinstance(tag, dict) and tag.get('name') in EXPLICIT_TAGS
+        ]
+    
+    return result
+
 
 class JWTAuthenticationExtension(OpenApiAuthenticationExtension):
     """