-- 计量器具 - 导入按钮权限（父菜单：计量器具 id=5380）
-- 动态 id（MAX(id)+1），避免与既有菜单撞车；可重复执行（幂等）。
SET @perm_exists := (SELECT COUNT(*) FROM system_menu WHERE permission = 'mes:dv-metering:import');
SET @import_menu_id := IFNULL((SELECT MAX(id) FROM system_menu), 0) + 1;

INSERT INTO system_menu (id, name, permission, type, sort, parent_id, path, icon, component,
                         component_name, status, visible, keep_alive, always_show,
                         creator, create_time, updater, update_time, deleted)
SELECT @import_menu_id, '计量器具导入', 'mes:dv-metering:import', 3, 8, 5380, '', '#', '', NULL,
       0, 1, 0, 1, '1', NOW(), '1', NOW(), 0
FROM DUAL
WHERE @perm_exists = 0;

SET @menu_id := (SELECT id FROM system_menu WHERE permission = 'mes:dv-metering:import');
SET @grant_exists := (SELECT COUNT(*) FROM system_role_menu WHERE role_id = 1 AND menu_id = @menu_id);

INSERT INTO system_role_menu (role_id, menu_id, creator, create_time, updater, update_time, deleted)
SELECT 1, @menu_id, '1', NOW(), '1', NOW(), 0
FROM DUAL
WHERE @menu_id IS NOT NULL AND @grant_exists = 0;