-- 本文件是人工执行的 MySQL 前向补丁，未自动执行。
-- 前置条件：必须先成功执行 20260727_promote_business_menus_mysql.sql，将三个业务目录提升为一级菜单。
-- 应用本补丁后禁止逆序重跑旧补丁；所有补丁只允许按日期顺序前向执行。
-- 执行前备份数据库，并在维护窗口使用独立连接运行标准 mysql batch。
-- 旧图标和目标图标状态均可通过写前校验，因此本补丁可幂等重跑。
-- 标准 mysql batch 遇错后必须退出并关闭连接，使未提交事务回滚；禁止使用 mysql --force。

drop temporary table if exists business_menu_icon_expected;
create temporary table business_menu_icon_expected (
  menu_id bigint not null,
  menu_name varchar(50) not null,
  path varchar(200),
  component varchar(255),
  query varchar(255),
  route_name varchar(50),
  is_frame int,
  is_cache int,
  menu_type char(1),
  visible char(1),
  status char(1),
  perms varchar(100),
  parent_id bigint not null,
  order_num int not null,
  old_icon varchar(100) not null,
  new_icon varchar(100) not null,
  primary key (menu_id)
) engine=innodb;

insert into business_menu_icon_expected (
  menu_id, menu_name, path, component, query, route_name,
  is_frame, is_cache, menu_type, visible, status, perms,
  parent_id, order_num, old_icon, new_icon
) values
(121, '基础资料维护', 'businessMaster', null, '', '', 1, 0, 'M', '0', '0', '', 0, 1, '#', 'dict'),
(122, '业务管理', 'businessOperation', null, '', '', 1, 0, 'M', '0', '0', '', 0, 2, '#', 'form'),
(123, '报表查询', 'businessReport', null, '', '', 1, 0, 'M', '0', '0', '', 0, 3, '#', 'chart');

drop temporary table if exists business_menu_icon_guard;
create temporary table business_menu_icon_guard (
  guard_token varchar(64) not null,
  primary key (guard_token)
) engine=innodb;

start transaction;

select menu_id
from sys_menu
where menu_id in (121, 122, 123)
order by menu_id
for update;

-- 写前只接受三行全部使用旧占位图标或全部使用目标图标。
insert into business_menu_icon_guard (guard_token)
select guard_token
from (
  select 'business-menu-icon-precondition-conflict' as guard_token
  union all
  select if(
    count(actual.menu_id) = 3
    and sum(
      (binary actual.menu_name <=> binary expected.menu_name)
      and (binary actual.path <=> binary expected.path)
      and (binary actual.component <=> binary expected.component)
      and (binary actual.query <=> binary expected.query)
      and (binary actual.route_name <=> binary expected.route_name)
      and (actual.is_frame <=> expected.is_frame)
      and (actual.is_cache <=> expected.is_cache)
      and (binary actual.menu_type <=> binary expected.menu_type)
      and (binary actual.visible <=> binary expected.visible)
      and (binary actual.status <=> binary expected.status)
      and (binary actual.perms <=> binary expected.perms)
      and (actual.parent_id <=> expected.parent_id)
      and (actual.order_num <=> expected.order_num)
    ) = 3
    and (
      sum((binary actual.icon <=> binary expected.old_icon)) = 3
      or sum((binary actual.icon <=> binary expected.new_icon)) = 3
    ),
    'business-menu-icon-precondition-verified',
    'business-menu-icon-precondition-conflict'
  ) as guard_token
  from business_menu_icon_expected as expected
  left join sys_menu as actual
    on actual.menu_id = expected.menu_id
) as precondition_guard_rows;

-- 唯一永久 DML：只更新三个业务一级目录的图标。
update sys_menu
set icon = case menu_id
      when 121 then 'dict'
      when 122 then 'form'
      when 123 then 'chart'
      else icon
    end
where menu_id in (121, 122, 123);

-- 提交前再次核对三行稳定身份和目标图标。
insert into business_menu_icon_guard (guard_token)
select guard_token
from (
  select 'business-menu-icon-postcondition-conflict' as guard_token
  union all
  select if(
    count(actual.menu_id) = 3
    and sum(
      (binary actual.menu_name <=> binary expected.menu_name)
      and (binary actual.path <=> binary expected.path)
      and (binary actual.component <=> binary expected.component)
      and (binary actual.query <=> binary expected.query)
      and (binary actual.route_name <=> binary expected.route_name)
      and (actual.is_frame <=> expected.is_frame)
      and (actual.is_cache <=> expected.is_cache)
      and (binary actual.menu_type <=> binary expected.menu_type)
      and (binary actual.visible <=> binary expected.visible)
      and (binary actual.status <=> binary expected.status)
      and (binary actual.perms <=> binary expected.perms)
      and (actual.parent_id <=> expected.parent_id)
      and (actual.order_num <=> expected.order_num)
    ) = 3
    and sum((binary actual.icon <=> binary expected.new_icon)) = 3,
    'business-menu-icon-postcondition-verified',
    'business-menu-icon-postcondition-conflict'
  ) as guard_token
  from business_menu_icon_expected as expected
  left join sys_menu as actual
    on actual.menu_id = expected.menu_id
) as postcondition_guard_rows;

commit;

drop temporary table business_menu_icon_guard;
drop temporary table business_menu_icon_expected;

select menu_id, menu_name, parent_id, order_num, path, icon
from sys_menu
where menu_id in (121, 122, 123)
order by order_num, menu_id;