package cc.mrbird.febs.mall.service.impl;

import cc.mrbird.febs.common.entity.FebsResponse;
import cc.mrbird.febs.common.entity.QueryRequest;
import cc.mrbird.febs.mall.entity.MallGoods;
import cc.mrbird.febs.mall.entity.MallGoodsCategory;
import cc.mrbird.febs.mall.mapper.MallGoodsCategoryMapper;
import cc.mrbird.febs.mall.mapper.MallGoodsMapper;
import cc.mrbird.febs.mall.service.IAdminMallGoodsCategoryService;
import cc.mrbird.febs.mall.vo.AdminMallGoodsCategoryTreeVo;
import cc.mrbird.febs.mall.vo.AdminMallGoodsCategoryVo;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.util.List;

@Slf4j
@Service
@RequiredArgsConstructor
public class AdminMallGoodsCategoryService extends ServiceImpl<MallGoodsCategoryMapper, MallGoodsCategory> implements IAdminMallGoodsCategoryService {

    private final MallGoodsCategoryMapper mallGoodsCategoryMapper;

    private final MallGoodsMapper mallGoodsMapper;

    @Override
    public IPage<MallGoodsCategory> getCategoryList(MallGoodsCategory mallGoodsCategory, QueryRequest request) {
        Page<MallGoodsCategory> page = new Page<>(request.getPageNum(), request.getPageSize());
        IPage<MallGoodsCategory> mallGoodsCategorys = this.baseMapper.selectCategoryListInPage(page, mallGoodsCategory);
        return mallGoodsCategorys;
    }

    @Override
    public FebsResponse addCategory(MallGoodsCategory mallGoodsCategory) {
        String name = mallGoodsCategory.getName();
        if(StrUtil.isEmpty(name)){
            return new FebsResponse().fail().message("分类名称不能为空");
        }
        List<MallGoodsCategory> categorys = mallGoodsCategoryMapper.selectCategoryByName(name);
        if(CollUtil.isNotEmpty(categorys)){
            return new FebsResponse().fail().message("分类名称不能重复");
        }
        Long parentIdParam = mallGoodsCategory.getParentId() == null ? 0L:mallGoodsCategory.getParentId();
        Integer isRecommendParam = mallGoodsCategory.getIsRecommend();
        if(parentIdParam > 0 && isRecommendParam == 1){
            return new FebsResponse().fail().message("子分类不能选择【是否推荐】为【是】");
        }

        MallGoodsCategory goodsCategory = new MallGoodsCategory();
        goodsCategory.setName(name);
        goodsCategory.setImage(mallGoodsCategory.getImage());
        if(ObjectUtil.isNotEmpty(mallGoodsCategory.getParentId())){
            Long parentId = mallGoodsCategory.getParentId();
            MallGoodsCategory mallGoodsCategoryParent = mallGoodsCategoryMapper.selectById(parentId);
            goodsCategory.setParentId(mallGoodsCategory.getParentId());
            if(StrUtil.isNotEmpty(mallGoodsCategoryParent.getParentIds())){
                goodsCategory.setParentIds(mallGoodsCategoryParent.getParentIds()+","+mallGoodsCategory.getParentId()+",");
            }else{
                goodsCategory.setParentIds(mallGoodsCategory.getParentId()+",");
            }
            goodsCategory.setIsRecommend(0);
        }else{
            goodsCategory.setParentId(0L);
            goodsCategory.setIsRecommend(mallGoodsCategory.getIsRecommend());
        }
        mallGoodsCategoryMapper.insert(goodsCategory);
        return new FebsResponse().success();
    }

    @Override
    public List<MallGoodsCategory> getCategorys(MallGoodsCategory mallGoodsCategory) {
        List<MallGoodsCategory> mallGoodsCategorys = mallGoodsCategoryMapper.getCategorys();
        return mallGoodsCategorys;
    }

    @Override
    public AdminMallGoodsCategoryVo getMallGoodsCategoryInfoById(long id) {
        return mallGoodsCategoryMapper.getMallGoodsCategoryInfoById(id);
    }

    @Override
    public List<AdminMallGoodsCategoryTreeVo> getParentCategorys() {
        List<AdminMallGoodsCategoryTreeVo> adminMallGoodsCategoryTreeVos = mallGoodsCategoryMapper.getParentCategorys();
        return adminMallGoodsCategoryTreeVos;
    }

    @Override
    public FebsResponse updateCategory(MallGoodsCategory mallGoodsCategoryParam) {
        String name = mallGoodsCategoryParam.getName();
        if(StrUtil.isEmpty(name)){
            return new FebsResponse().fail().message("名称不能为空");
        }
        Long parentIdParam = mallGoodsCategoryParam.getParentId() == null ? 0L:mallGoodsCategoryParam.getParentId();
        Integer isRecommendParam = mallGoodsCategoryParam.getIsRecommend();
        if(parentIdParam > 0 && isRecommendParam == 1){
            return new FebsResponse().fail().message("子分类不能选择【是否推荐】为【是】");
        }

        Long id = mallGoodsCategoryParam.getId();
        MallGoodsCategory mallGoodsCategory = mallGoodsCategoryMapper.selectById(id);
        mallGoodsCategory.setName(mallGoodsCategoryParam.getName());
        mallGoodsCategory.setImage(mallGoodsCategoryParam.getImage());
        if(ObjectUtil.isNotEmpty(mallGoodsCategoryParam.getParentId())){
            Long parentId = mallGoodsCategoryParam.getParentId();
            MallGoodsCategory mallGoodsCategoryParent = mallGoodsCategoryMapper.selectById(parentId);
            mallGoodsCategory.setParentId(mallGoodsCategoryParam.getParentId());
            if(StrUtil.isNotEmpty(mallGoodsCategoryParent.getParentIds())){
                mallGoodsCategory.setParentIds(mallGoodsCategoryParent.getParentIds()+","+mallGoodsCategory.getParentId()+",");
            }else{
                mallGoodsCategory.setParentIds(mallGoodsCategory.getParentId()+",");
            }
            mallGoodsCategory.setIsRecommend(0);
        }else{
            mallGoodsCategory.setParentId(0L);
            mallGoodsCategory.setIsRecommend(mallGoodsCategoryParam.getIsRecommend());
        }
        mallGoodsCategoryMapper.updateById(mallGoodsCategory);

        return new FebsResponse().success();
    }

    @Override
    public FebsResponse delCategary(Long id) {
        MallGoodsCategory mallGoodsCategory = mallGoodsCategoryMapper.selectById(id);
        if(ObjectUtil.isEmpty(mallGoodsCategory)){
            return new FebsResponse().fail().message("系统繁忙，请刷新页面重试");
        }
        List<MallGoodsCategory> childCategarys = mallGoodsCategoryMapper.selectChildCategaryById(id);
        if(CollUtil.isNotEmpty(childCategarys)){
            for(MallGoodsCategory childCategary : childCategarys){
                Long childCategaryId = childCategary.getId();
                List<MallGoods> mallChildGoods = mallGoodsMapper.selectMallGoodsByCategaryId(childCategaryId);
                if(CollUtil.isNotEmpty(mallChildGoods)){
                    return new FebsResponse().fail().message("该分类下的子类【"+childCategary.getName()+"】还有商品，请先删除商品或者修改商品分类");
                }
            }
        }

        if(CollUtil.isNotEmpty(childCategarys)){
            return new FebsResponse().fail().message("该分类下还有子类，请先删除子类");
        }

        List<MallGoods> mallGoods = mallGoodsMapper.selectMallGoodsByCategaryId(id);
        if(CollUtil.isNotEmpty(mallGoods)){
            return new FebsResponse().fail().message("该分类下还有商品，请先删除商品或者修改商品分类");
        }
        mallGoodsCategoryMapper.deleteById(mallGoodsCategory);
        return new FebsResponse().success();
    }

}