package com.ruoyi.system.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.system.mapper.TRegionMapper;
import com.ruoyi.system.model.TRegion;
import com.ruoyi.system.service.TRegionService;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 * 省市管理 服务实现类
 * </p>
 *
 * @author xiaochen
 * @since 2024-02-29
 */
@Service
public class TRegionServiceImpl extends ServiceImpl<TRegionMapper, TRegion> implements TRegionService {

    @Override
    public List<TRegion> getRegion() {
        List<TRegion> tRegions = this.baseMapper.selectList(Wrappers.lambdaQuery(TRegion.class));
        List<TRegion> parent = tRegions.stream().filter(e -> e.getParentId().equals(0L)).collect(Collectors.toList());
        for (TRegion region : parent) {
            List<TRegion> children = tRegions.stream().filter(e -> e.getParentId().equals(region.getId())).collect(Collectors.toList());
            region.setChildren(children);
        }
        return parent;
    }
}