feat: implement workspace permission checks for member invitations an… (#31202)

api/libs/workspace_permission.py

@@ -0,0 +1,74 @@
+"""
+Workspace permission helper functions.
+
+These helpers check both billing/plan level and workspace-specific policy level permissions.
+Checks are performed at two levels:
+1. Billing/plan level - via FeatureService (e.g., SANDBOX plan restrictions)
+2. Workspace policy level - via EnterpriseService (admin-configured per workspace)
+"""
+
+import logging
+
+from werkzeug.exceptions import Forbidden
+
+from configs import dify_config
+from services.enterprise.enterprise_service import EnterpriseService
+from services.feature_service import FeatureService
+
+logger = logging.getLogger(__name__)
+
+
+def check_workspace_member_invite_permission(workspace_id: str) -> None:
+    """
+    Check if workspace allows member invitations at both billing and policy levels.
+
+    Checks performed:
+    1. Billing/plan level - For future expansion (currently no plan-level restriction)
+    2. Enterprise policy level - Admin-configured workspace permission
+
+    Args:
+        workspace_id: The workspace ID to check permissions for
+
+    Raises:
+        Forbidden: If either billing plan or workspace policy prohibits member invitations
+    """
+    # Check enterprise workspace policy level (only if enterprise enabled)
+    if dify_config.ENTERPRISE_ENABLED:
+        try:
+            permission = EnterpriseService.WorkspacePermissionService.get_permission(workspace_id)
+            if not permission.allow_member_invite:
+                raise Forbidden("Workspace policy prohibits member invitations")
+        except Forbidden:
+            raise
+        except Exception:
+            logger.exception("Failed to check workspace invite permission for %s", workspace_id)
+
+
+def check_workspace_owner_transfer_permission(workspace_id: str) -> None:
+    """
+    Check if workspace allows owner transfer at both billing and policy levels.
+
+    Checks performed:
+    1. Billing/plan level - SANDBOX plan blocks owner transfer
+    2. Enterprise policy level - Admin-configured workspace permission
+
+    Args:
+        workspace_id: The workspace ID to check permissions for
+
+    Raises:
+        Forbidden: If either billing plan or workspace policy prohibits ownership transfer
+    """
+    features = FeatureService.get_features(workspace_id)
+    if not features.is_allow_transfer_workspace:
+        raise Forbidden("Your current plan does not allow workspace ownership transfer")
+
+    # Check enterprise workspace policy level (only if enterprise enabled)
+    if dify_config.ENTERPRISE_ENABLED:
+        try:
+            permission = EnterpriseService.WorkspacePermissionService.get_permission(workspace_id)
+            if not permission.allow_owner_transfer:
+                raise Forbidden("Workspace policy prohibits ownership transfer")
+        except Forbidden:
+            raise
+        except Exception:
+            logger.exception("Failed to check workspace transfer permission for %s", workspace_id)