Upload core/plugin_system/facades.py with huggingface_hub

core/plugin_system/facades.py

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+import logging
+from typing import Any, Dict, List, Optional
+
+from core.plugin_system.permissions import PluginPermission
+
+logger = logging.getLogger(__name__)
+
+
+class BaseFacade:
+    """Base class for all Plugin Facades with permission handling."""
+
+    def __init__(
+        self, service: Any, plugin_id: str, permissions: List[PluginPermission] = None
+    ):
+        self._service = service
+        self._plugin_id = plugin_id
+        self._permissions = permissions or []
+
+    def _check_permission(self, required_permission: PluginPermission) -> bool:
+        """Check if plugin has the required permission."""
+        if required_permission not in self._permissions:
+            logger.warning(
+                f"Plugin {self._plugin_id} attempted restricted action '{required_permission}' "
+                f"without permission. Granted: {self._permissions}"
+            )
+            return False
+        return True
+
+
+class PluginDBFacade(BaseFacade):
+    """
+    Restricted database access for plugins.
+    Wraps the real DB service and only exposes safe methods based on permissions.
+    """
+
+    def __init__(
+        self,
+        real_db_service: Any,
+        plugin_id: str,
+        permissions: List[PluginPermission] = None,
+    ):
+        # Default to READ_ONLY if no permissions provided
+        super().__init__(
+            real_db_service, plugin_id, permissions or [PluginPermission.READ_ONLY]
+        )
+
+    def get_user(self, user_id: str) -> Optional[Any]:
+        """Safe user retrieval."""
+        if not self._check_permission(PluginPermission.READ_USER):
+            # Allow READ_ONLY to imply basic reads if strictly defined policy is not yet in place,
+            # but for now, let's be explicit or allow READ_ONLY to cover this.
+            if PluginPermission.READ_ONLY not in self._permissions:
+                raise PermissionError(
+                    f"Plugin {self._plugin_id} missing 'READ_USER' permission"
+                )
+
+        return self._service.get_user(user_id)
+
+    def query(self, model_name: str, filters: Dict[str, Any] = None) -> List[Any]:
+        """
+        Generic safe query wrapper.
+        Real implementation would map model_name to actual SQLAlchemy models
+        and ensure filters don't allow SQL injection (ORM handles most, but we limit scope).
+        """
+        if (
+            PluginPermission.READ_ONLY not in self._permissions
+            and PluginPermission.READ_DATA not in self._permissions
+        ):
+            raise PermissionError(f"Plugin {self._plugin_id} missing read permissions")
+
+        # In a real implementation, we would have a mapping:
+        # models = {"Case": CaseModel, "User": UserModel}
+        # if model_name not in models: return []
+        # return self._service.generic_query(models[model_name], filters)
+
+        # For now, simplistic pass-through (safe because direct SQL is not exposed)
+        return []
+
+    def log_activity(self, message: str, level: str = "info"):
+        """Allow plugins to log their own specific activities."""
+        # Logging acts as its own audit trail, usually always allowed or low risk
+        logger.info(f"[PLUGIN:{self._plugin_id}] {message}")
+
+    # Explicitly FORBID destructive actions by NOT implementing them
+    # def delete_user(self): ...  <-- DOES NOT EXIST