-- Galaxy Object Hierarchy for OPC UA Server
-- Returns the parent-child hierarchy with both browse names (contained_name) and tag names.
-- Use browse_name for OPC UA browse tree display.
-- Use tag_name for runtime read/write tag references.
--
-- Derived from internal_automation_object_model_hierarchy_view2 logic:
--   - gobject: provides hierarchy (contained_by_gobject_id, area_gobject_id) and names
--   - template_definition: category_id filters to automation-relevant objects
--
-- Category IDs:
--   1  = $WinPlatform    (platform objects)
--   3  = $AppEngine       (application engines)
--   4  = $InTouchViewApp  (InTouch view apps)
--   10 = $UserDefined     (user-defined automation objects)
--   11 = $FieldReference  (field reference objects)
--   13 = $Area            (areas / folders)
--   17 = $DIObject        (DI objects)
--   24 = $DDESuiteLinkClient
--   26 = $OPCClient

SELECT DISTINCT
    g.gobject_id,
    g.tag_name,
    g.contained_name,
    CASE WHEN g.contained_name IS NULL OR g.contained_name = ''
         THEN g.tag_name
         ELSE g.contained_name
    END AS browse_name,
    CASE WHEN g.contained_by_gobject_id = 0
         THEN g.area_gobject_id
         ELSE g.contained_by_gobject_id
    END AS parent_gobject_id,
    CASE WHEN td.category_id = 13
         THEN 1
         ELSE 0
    END AS is_area
FROM gobject g
INNER JOIN template_definition td
    ON g.template_definition_id = td.template_definition_id
WHERE td.category_id IN (1, 3, 4, 10, 11, 13, 17, 24, 26)
    AND g.is_template = 0
    AND g.deployed_package_id <> 0
ORDER BY parent_gobject_id, g.tag_name;
