package com.ycl.platform.service.impl;

import com.ycl.platform.base.BaseSelect;
import com.ycl.platform.domain.entity.Region;
import com.ycl.platform.domain.entity.YwUnit;
import com.ycl.platform.domain.vo.RegionCascaderVO;
import com.ycl.platform.mapper.RegionMapper;
import com.ycl.platform.service.RegionService;
import com.ycl.system.Result;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ycl.platform.domain.form.RegionForm;
import com.ycl.platform.domain.vo.RegionVO;
import com.ycl.platform.domain.query.RegionQuery;

import java.util.Date;
import java.util.List;

import com.ycl.utils.DateUtils;
import enumeration.general.RegionLevelEnum;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.ycl.system.page.PageUtil;
import org.springframework.stereotype.Service;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.beans.BeanUtils;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Assert;
import java.util.ArrayList;
import java.util.Objects;
import java.util.stream.Collectors;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.conditions.query.LambdaQueryChainWrapper;
import lombok.RequiredArgsConstructor;
import org.springframework.util.StringUtils;

/**
 * 地域 服务实现类
 *
 * @author xp
 * @since 2024-03-12
 */
@Service
@RequiredArgsConstructor
public class RegionServiceImpl extends ServiceImpl<RegionMapper, Region> implements RegionService {

    private final RegionMapper regionMapper;

    /**
     * 添加
     * @param form
     * @return
     */
    @Override
    public Result add(RegionForm form) {
        Region entity = RegionForm.getEntityByForm(form, null);
        entity.setRegionLevel(RegionLevelEnum.STREET);
        Date now = new Date();
        entity.setCreateTime(now);
        entity.setUpdateTime(now);
        if(baseMapper.insert(entity) > 0) {
            return Result.ok("添加成功");
        }
        return Result.error("添加失败");
    }

    /**
     * 修改
     * @param form
     * @return
     */
    @Override
    public Result update(RegionForm form) {

        Region entity = baseMapper.selectById(form.getId());
        // 为空抛IllegalArgumentException，做全局异常处理
        Assert.notNull(entity, "记录不存在");
        BeanUtils.copyProperties(form, entity);
        Date now = new Date();
        entity.setUpdateTime(now);
        if (baseMapper.updateById(entity) > 0) {
            return Result.ok("修改成功");
        }
        return Result.error("修改失败");
    }

    /**
     * 批量删除
     * @param ids
     * @return
     */
    @Override
    public Result remove(List<String> ids) {
        if(baseMapper.deleteBatchIds(ids) > 0) {
            return Result.ok("删除成功");
        }
        return Result.error("删除失败");
    }

    /**
     * id删除
     * @param id
     * @return
     */
    @Override
    public Result removeById(String id) {
        if(baseMapper.deleteById(id) > 0) {
            return Result.ok("删除成功");
        }
        return Result.error("删除失败");
    }

    /**
     * 分页查询
     * @param query
     * @return
     */
    @Override
    public Result page(RegionQuery query) {

        IPage<Region> page = new LambdaQueryChainWrapper<>(baseMapper)
                .like(StringUtils.hasText(query.getFullName()), Region::getFullName, query.getFullName())
                .like(StringUtils.hasText(query.getSimpleName()), Region::getSimpleName, query.getSimpleName())
                .eq(Objects.nonNull(query.getParentId()), Region::getParentId, query.getParentId())
                .eq(StringUtils.hasText(query.getRegionLevel()), Region::getRegionLevel, query.getRegionLevel())
                .between(Objects.nonNull(query.getStart()) && Objects.nonNull(query.getEnd()),
                        Region::getCreateTime,
                        DateUtils.getDayStart(query.getStart()),
                        DateUtils.getDayEnd(query.getEnd()))
                .orderByDesc(Region::getCreateTime)
                .page(PageUtil.getPage(query, Region.class));

        List<RegionVO> vos = page.getRecords().stream()
                .map(
                        entity -> RegionVO.getVoByEntity(entity, null)
                )
                .collect(Collectors.toList());
        return Result.ok().data(vos).total(page.getTotal());
    }

    /**
     * 根据id查找
     * @param id
     * @return
     */
    @Override
    public Result detail(String id) {
        Region entity = baseMapper.selectById(id);
        Assert.notNull(entity, "记录不存在");
        RegionVO vo = RegionVO.getVoByEntity(entity, null);
        return Result.ok().data(vo);
    }

    /**
     * 列表
     * @return
     */
    @Override
    public Result all() {
        List<Region> entities = baseMapper.selectList(null);
        List<RegionVO> vos = entities.stream()
                .map(
                        entity -> RegionVO.getVoByEntity(entity, null)
                )
                .collect(Collectors.toList());
        return Result.ok().data(vos);
    }

    @Override
    public Result counties() {
        List<Region> entityList = new LambdaQueryChainWrapper<>(baseMapper)
                .eq(Region::getRegionLevel, RegionLevelEnum.COUNTY)
                .orderByDesc(Region::getCreateTime)
                .list();
        List<BaseSelect> vos = entityList.stream().map(entity -> {
            BaseSelect vo = new BaseSelect();
            vo.setId(entity.getId());
            vo.setValue(entity.getFullName());
            return vo;
        }).collect(Collectors.toList());
        return Result.ok().data(vos);
    }

    @Override
    public Result cascader() {
        List<Region> regionList = new LambdaQueryChainWrapper<>(baseMapper)
                .ne(Region::getRegionLevel, RegionLevelEnum.CITY)
                .list();
        List<RegionCascaderVO> vos = regionList.stream().map(entity -> {
            RegionCascaderVO vo = new RegionCascaderVO();
            vo.setValue(entity.getId());
            vo.setLabel(entity.getSimpleName());
            vo.setRegionLevel(entity.getRegionLevel());
            vo.setParentId(entity.getParentId());
            return vo;
        }).collect(Collectors.toList());
        List<RegionCascaderVO> removeList = new ArrayList<>(12);
        for (RegionCascaderVO region : vos) {
            if (region.getRegionLevel() == RegionLevelEnum.COUNTY) {
                List<RegionCascaderVO> childList = new ArrayList<>(12);
                for (RegionCascaderVO region1 : vos) {
                    if (region1.getParentId() == region.getValue()) {
                        childList.add(region1);
                        removeList.add(region1);
                    }
                }
                region.setChildren(childList);
            }
        }
        vos.removeAll(removeList);
        return Result.ok().data(vos);
    }
}