┌─────────────────────────────────────────────────────────────┐
│                      权限体系架构                            │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  用户 (sys_user)                                            │
│    │                                                        │
│    └── 拥有多个 ──→ 角色 (sys_role)                          │
│                      │                                      │
│                      ├── 拥有多个 ──→ 菜单权限 (sys_menu)     │
│                      │                 ├─ 目录 (type=0)     │
│                      │                 ├─ 菜单 (type=1)     │
│                      │                 └─ 按钮 (type=2)     │
│                      │                                      │
│                      └── 数据权限 (data_scope)               │
│                           ├─ 全部数据 (1)                   │
│                           ├─ 本部门 (2)                     │
│                           ├─ 本部门及下级 (3)               │
│                           ├─ 仅本人 (4)                     │
│                           └─ 自定义部门 (5)                 │
│                                                             │
└─────────────────────────────────────────────────────────────┘

{模块}:{实体}:{操作}

# 系统管理模块
sys:user:list        # 用户列表
sys:user:add         # 新增用户
sys:role:assign      # 分配角色权限

# 业务模块示例
emergency:event:list     # 应急事件列表
emergency:event:handle   # 处理事件
emergency:plan:approve   # 审批预案

V{版本号}__{描述}.sql

示例:
V4__add_emergency_module_menu.sql
V5__add_monitor_module_menu.sql

-- V{N}__add_{module}_menu.sql
-- 作者: CX
-- 日期: {日期}
-- 描述: 添加{模块名}模块菜单和权限

-- =============================================
-- 获取当前最大菜单ID
-- =============================================
SET @max_menu_id = (SELECT COALESCE(MAX(id), 100) FROM sys_menu);

-- =============================================
-- 添加{模块名}目录
-- =============================================
INSERT INTO sys_menu (id, parent_id, menu_name, menu_type, path, component, permission, icon, sort, visible, status) VALUES
(@max_menu_id + 1, 0, '{模块中文名}', 0, '/{module}', NULL, NULL, '{icon}', {sort}, 1, 1);

-- =============================================
-- 添加{功能名}菜单
-- =============================================
INSERT INTO sys_menu (id, parent_id, menu_name, menu_type, path, component, permission, icon, sort, visible, status) VALUES
(@max_menu_id + 2, @max_menu_id + 1, '{功能中文名}', 1, '/{module}/{entity}', '/{module}/{entity}/index', '{module}:{entity}:list', '{icon}', 1, 1, 1),
(@max_menu_id + 3, @max_menu_id + 2, '{功能}新增', 2, NULL, NULL, '{module}:{entity}:add', NULL, 1, 1, 1),
(@max_menu_id + 4, @max_menu_id + 2, '{功能}编辑', 2, NULL, NULL, '{module}:{entity}:edit', NULL, 2, 1, 1),
(@max_menu_id + 5, @max_menu_id + 2, '{功能}删除', 2, NULL, NULL, '{module}:{entity}:delete', NULL, 3, 1, 1);

-- =============================================
-- 为超级管理员分配新菜单权限
-- =============================================
INSERT INTO sys_role_menu (role_id, menu_id)
SELECT 1, id FROM sys_menu WHERE id > @max_menu_id;

-- V4__add_emergency_event_menu.sql
-- 作者: CX
-- 日期: 2026-01-13
-- 描述: 添加应急事件管理模块菜单和权限

-- =============================================
-- 获取当前最大菜单ID (避免ID冲突)
-- =============================================
SET @max_menu_id = (SELECT COALESCE(MAX(id), 100) FROM sys_menu);

-- =============================================
-- 添加应急管理目录
-- =============================================
INSERT INTO sys_menu (id, parent_id, menu_name, menu_type, path, component, permission, icon, sort, visible, status) VALUES
(@max_menu_id + 1, 0, '应急管理', 0, '/emergency', NULL, NULL, 'ant-design:alert-outlined', 10, 1, 1);

-- =============================================
-- 添加事件管理菜单及按钮
-- =============================================
INSERT INTO sys_menu (id, parent_id, menu_name, menu_type, path, component, permission, icon, sort, visible, status) VALUES
-- 事件管理菜单
(@max_menu_id + 2, @max_menu_id + 1, '事件管理', 1, '/emergency/event', '/emergency/event/index', 'emergency:event:list', 'ant-design:file-exclamation-outlined', 1, 1, 1),
-- 事件管理按钮
(@max_menu_id + 3, @max_menu_id + 2, '事件新增', 2, NULL, NULL, 'emergency:event:add', NULL, 1, 1, 1),
(@max_menu_id + 4, @max_menu_id + 2, '事件编辑', 2, NULL, NULL, 'emergency:event:edit', NULL, 2, 1, 1),
(@max_menu_id + 5, @max_menu_id + 2, '事件删除', 2, NULL, NULL, 'emergency:event:delete', NULL, 3, 1, 1),
(@max_menu_id + 6, @max_menu_id + 2, '事件处理', 2, NULL, NULL, 'emergency:event:handle', NULL, 4, 1, 1),
(@max_menu_id + 7, @max_menu_id + 2, '事件导出', 2, NULL, NULL, 'emergency:event:export', NULL, 5, 1, 1);

-- =============================================
-- 添加预案管理菜单及按钮
-- =============================================
INSERT INTO sys_menu (id, parent_id, menu_name, menu_type, path, component, permission, icon, sort, visible, status) VALUES
-- 预案管理菜单
(@max_menu_id + 8, @max_menu_id + 1, '预案管理', 1, '/emergency/plan', '/emergency/plan/index', 'emergency:plan:list', 'ant-design:solution-outlined', 2, 1, 1),
-- 预案管理按钮
(@max_menu_id + 9, @max_menu_id + 8, '预案新增', 2, NULL, NULL, 'emergency:plan:add', NULL, 1, 1, 1),
(@max_menu_id + 10, @max_menu_id + 8, '预案编辑', 2, NULL, NULL, 'emergency:plan:edit', NULL, 2, 1, 1),
(@max_menu_id + 11, @max_menu_id + 8, '预案删除', 2, NULL, NULL, 'emergency:plan:delete', NULL, 3, 1, 1),
(@max_menu_id + 12, @max_menu_id + 8, '预案审批', 2, NULL, NULL, 'emergency:plan:approve', NULL, 4, 1, 1);

-- =============================================
-- 为超级管理员角色分配新菜单权限
-- =============================================
INSERT INTO sys_role_menu (role_id, menu_id)
SELECT 1, id FROM sys_menu WHERE id > @max_menu_id;

@RestController
@RequestMapping("/api/emergency/event")
@RequiredArgsConstructor
@Tag(name = "应急事件管理")
public class EmergencyEventController {

    private final EmergencyEventService eventService;

    @GetMapping
    @SaCheckPermission("emergency:event:list")
    @Operation(summary = "事件列表")
    public ApiResponse<Page<EventVO>> list(EventQueryDTO query) {
        return ApiResponse.success(eventService.findPage(query));
    }

    @PostMapping
    @SaCheckPermission("emergency:event:add")
    @Operation(summary = "新增事件")
    public ApiResponse<EventVO> create(@Valid @RequestBody EventCreateDTO dto) {
        return ApiResponse.success(eventService.create(dto));
    }

    @PutMapping("/{id}")
    @SaCheckPermission("emergency:event:edit")
    @Operation(summary = "编辑事件")
    public ApiResponse<EventVO> update(@PathVariable Long id, @Valid @RequestBody EventUpdateDTO dto) {
        return ApiResponse.success(eventService.update(id, dto));
    }

    @DeleteMapping("/{id}")
    @SaCheckPermission("emergency:event:delete")
    @Operation(summary = "删除事件")
    public ApiResponse<Void> delete(@PathVariable Long id) {
        eventService.delete(id);
        return ApiResponse.success();
    }

    @PutMapping("/{id}/handle")
    @SaCheckPermission("emergency:event:handle")
    @Operation(summary = "处理事件")
    public ApiResponse<EventVO> handle(@PathVariable Long id, @Valid @RequestBody EventHandleDTO dto) {
        return ApiResponse.success(eventService.handle(id, dto));
    }
}

@Service
@RequiredArgsConstructor
public class EmergencyEventServiceImpl implements EmergencyEventService {

    private final EmergencyEventRepository eventRepository;
    private final DataScopeHelper dataScopeHelper;

    @Override
    @DataScope(deptAlias = "", userAlias = "")
    public Page<EventVO> findPage(EventQueryDTO query) {
        Specification<EmergencyEvent> spec = (root, criteriaQuery, cb) -> {
            List<Predicate> predicates = new ArrayList<>();

            // 业务查询条件...

            // 数据权限过滤 (必须添加)
            Predicate dataScopePredicate = dataScopeHelper.buildDataScopePredicate(
                root, cb, "deptId", "createBy");
            if (dataScopePredicate != null) {
                predicates.add(dataScopePredicate);
            }

            return cb.and(predicates.toArray(new Predicate[0]));
        };

        return eventRepository.findAll(spec, pageRequest).map(this::convertToVO);
    }
}