-- 首页：根级一级菜单 menu_code=dashboard（id=90），无二级子菜单
-- 兼容旧版「90 目录 + 91 子菜单」；可重复执行

START TRANSACTION;

-- 下线旧首页目录（仅类型为目录且无编码的 id=90）
UPDATE bx_menu SET del_flag = 1, update_time = NOW()
WHERE id = 90 AND parent_id = 0 AND menu_type = 1 AND (menu_code IS NULL OR menu_code = '');

-- 旧子菜单 91 先提升为根级（便于后续把权限迁到 90）
UPDATE bx_menu SET
  parent_id = 0,
  menu_name = '首页',
  menu_code = 'dashboard',
  menu_type = 2,
  path = '/home',
  sort_order = 0,
  del_flag = 0,
  update_time = NOW()
WHERE id = 91 AND menu_code = 'dashboard';

-- 统一主键为 90：插入或覆盖为根级首页
INSERT INTO bx_menu (
  id, parent_id, menu_name, menu_code, menu_type, path, icon, sort_order, visible, status,
  remark, create_by, create_time, update_by, update_time, del_flag
) VALUES (
  90, 0, '首页', 'dashboard', 2, '/home', NULL, 0, 1, 1,
  NULL, 'system', NOW(), 'system', NOW(), 0
)
ON DUPLICATE KEY UPDATE
  parent_id = VALUES(parent_id),
  menu_name = VALUES(menu_name),
  menu_code = VALUES(menu_code),
  menu_type = VALUES(menu_type),
  path = VALUES(path),
  sort_order = VALUES(sort_order),
  del_flag = 0,
  status = 1,
  update_time = NOW();

-- 原只授权了 91 的角色，补授权 90
INSERT IGNORE INTO bx_menu_role (menu_id, role_id, create_time)
SELECT 90, role_id, NOW() FROM bx_menu_role WHERE menu_id = 91;

-- 下线重复的 91
UPDATE bx_menu SET del_flag = 1, update_time = NOW() WHERE id = 91;
DELETE FROM bx_menu_role WHERE menu_id = 91;

-- 已删除的旧目录 90 的无效角色关联
DELETE FROM bx_menu_role WHERE menu_id = 90 AND NOT EXISTS (
  SELECT 1 FROM bx_menu m WHERE m.id = 90 AND m.del_flag = 0
);

-- 所有角色具备首页（若尚未配置）
INSERT IGNORE INTO bx_menu_role (menu_id, role_id, create_time)
SELECT 90, r.id, NOW() FROM bx_role r WHERE r.del_flag = 0;

COMMIT;