feat/enh: group export endpoint

backend/open_webui/routers/groups.py

@@ -106,6 +106,32 @@ async def get_group_by_id(id: str, user=Depends(get_admin_user)):
         )
 
 
+############################
+# ExportGroupById
+############################
+
+
+class GroupExportResponse(GroupResponse):
+    user_ids: list[str] = []
+    pass
+
+
+@router.get("/id/{id}/export", response_model=Optional[GroupExportResponse])
+async def export_group_by_id(id: str, user=Depends(get_admin_user)):
+    group = Groups.get_group_by_id(id)
+    if group:
+        return GroupExportResponse(
+            **group.model_dump(),
+            member_count=Groups.get_group_member_count_by_id(group.id),
+            user_ids=Groups.get_group_user_ids_by_id(group.id),
+        )
+    else:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail=ERROR_MESSAGES.NOT_FOUND,
+        )
+
+
 ############################
 # UpdateGroupById
 ############################