package com.xiaopeng.operation.service.impl;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.xiaopeng.api.model.operation.SysMenu;
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import com.xiaopeng.operation.mapper.SysMenuMapper;
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import com.xiaopeng.operation.service.ISysMenuService;
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import org.springframework.stereotype.Service;
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import java.util.*;
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import java.util.stream.Collectors;
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/**
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* <p>
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* 菜单权限表 服务实现类
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* </p>
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*
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* @author mitao
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* @since 2026-02-03
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*/
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@Service
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public class SysMenuServiceImpl extends ServiceImpl<SysMenuMapper, SysMenu> implements ISysMenuService {
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/**
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* 根据菜单ID列表查询菜单列表
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*
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* @param menuIds 菜单ID列表
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* @return 菜单列表
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*/
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@Override
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public List<SysMenu> selectMenusByMenuIds(List<Long> menuIds) {
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if (menuIds == null || menuIds.isEmpty()) {
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return new ArrayList<>();
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}
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// 使用 MyBatis-Plus 的 listByIds 方法批量查询
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return this.listByIds(menuIds);
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}
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@Override
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public List<SysMenu> getMenuTree() {
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List<SysMenu> all = list();
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if (all == null || all.isEmpty()) {
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return Collections.emptyList();
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}
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// 1) 按 parentId 分组(M/C/F 都先放进去,后面再按类型筛)
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Map<Long, List<SysMenu>> childrenMap = all.stream()
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.filter(Objects::nonNull)
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.collect(Collectors.groupingBy(m -> m.getParentId() == null ? 0L : m.getParentId()));
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// 2) 找到根目录:通常 parentId = 0 或 null 的目录(M)
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List<SysMenu> roots = childrenMap.getOrDefault(0L, Collections.emptyList()).stream()
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.filter(m -> "M".equals(m.getMenuType()))
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.sorted(Comparator.comparing(SysMenu::getOrderNum, Comparator.nullsLast(Integer::compareTo)))
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.collect(Collectors.toList());
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// 3) 递归挂载:M 下挂 C;C 下挂 F(也允许 C 下还有 C,或 M 下还有 M,按你的数据结构来)
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for (SysMenu root : roots) {
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fillChildren(root, childrenMap);
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}
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return roots;
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}
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private void fillChildren(SysMenu node, Map<Long, List<SysMenu>> childrenMap) {
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Long id = node.getId();
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if (id == null) {
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node.setChildren(Collections.emptyList());
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return;
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}
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List<SysMenu> rawChildren = childrenMap.getOrDefault(id, Collections.emptyList());
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if (rawChildren.isEmpty()) {
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node.setChildren(Collections.emptyList());
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return;
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}
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// 根据你的层级规则过滤子节点:
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// - M 只能挂 M/C(看你业务,很多系统 M 下是 C)
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// - C 只能挂 F(按钮)或(有些系统 C 下还能挂 C)
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// - F 一般不挂任何子节点
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String type = node.getMenuType();
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List<SysMenu> children = rawChildren.stream()
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.filter(Objects::nonNull)
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.filter(child -> {
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if ("M".equals(type)) {
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return "M".equals(child.getMenuType()) || "C".equals(child.getMenuType());
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}
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if ("C".equals(type)) {
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return "F".equals(child.getMenuType()); // 若允许 C 下还有 C,可改为:return "C".equals(...) || "F".equals(...)
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}
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return false; // F 不再往下挂
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})
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.sorted(Comparator.comparing(SysMenu::getOrderNum, Comparator.nullsLast(Integer::compareTo)))
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.collect(Collectors.toList());
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node.setChildren(children);
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// 继续递归
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for (SysMenu child : children) {
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fillChildren(child, childrenMap);
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}
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}
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@Override
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public List<SysMenu> getPermission() {
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return Collections.emptyList();
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}
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}
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