package com.klp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.klp.common.core.page.TableDataInfo;
import com.klp.common.core.domain.PageQuery;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.klp.common.utils.StringUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.klp.domain.bo.WmsStockIoDetailBo;
import com.klp.domain.vo.WmsStockIoDetailVo;
import com.klp.domain.WmsStockIoDetail;
import com.klp.domain.WmsStockIo;
import com.klp.mapper.WmsStockIoDetailMapper;
import com.klp.mapper.WmsStockIoMapper;
import com.klp.service.IWmsStockIoDetailService;

import java.util.List;
import java.util.Map;
import java.util.Collection;
import java.util.Date;
import com.klp.common.exception.ServiceException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

/**
 * 出入库单明细Service业务层处理
 *
 * @author Joshi
 * @date 2025-07-18
 */
@RequiredArgsConstructor
@Service
public class WmsStockIoDetailServiceImpl implements IWmsStockIoDetailService {

    private final WmsStockIoDetailMapper baseMapper;
    private final WmsStockIoMapper stockIoMapper;

    /**
     * 查询出入库单明细
     */
    @Override
    public WmsStockIoDetailVo queryById(Long detailId){
        return baseMapper.selectVoById(detailId);
    }

    /**
     * 查询出入库单明细列表
     */
    @Override
    public TableDataInfo<WmsStockIoDetailVo> queryPageList(WmsStockIoDetailBo bo, PageQuery pageQuery) {
        QueryWrapper<WmsStockIoDetail> qw = buildQueryWrapperPlus(bo);
        Page<WmsStockIoDetailVo> result = baseMapper.selectVoPagePlus(pageQuery.build(), qw);
        return TableDataInfo.build(result);
    }

    /**
     * 查询出入库单明细列表
     */
    @Override
    public List<WmsStockIoDetailVo> queryList(WmsStockIoDetailBo bo) {
        LambdaQueryWrapper<WmsStockIoDetail> qw = buildQueryWrapper(bo);
        return baseMapper.selectVoList(qw);
    }
    private LambdaQueryWrapper<WmsStockIoDetail> buildQueryWrapper(WmsStockIoDetailBo bo) {
        Map<String, Object> params = bo.getParams();
        LambdaQueryWrapper<WmsStockIoDetail> lqw = new LambdaQueryWrapper<>();
        lqw.eq(bo.getStockIoId() != null, WmsStockIoDetail::getStockIoId, bo.getStockIoId());
        lqw.eq(bo.getWarehouseId() != null, WmsStockIoDetail::getWarehouseId, bo.getWarehouseId());
        lqw.eq(StringUtils.isNotBlank(bo.getItemType()), WmsStockIoDetail::getItemType, bo.getItemType());
        lqw.eq(bo.getItemId() != null, WmsStockIoDetail::getItemId, bo.getItemId());
        lqw.eq(bo.getQuantity() != null, WmsStockIoDetail::getQuantity, bo.getQuantity());
        lqw.eq(StringUtils.isNotBlank(bo.getUnit()), WmsStockIoDetail::getUnit, bo.getUnit());
        lqw.eq(StringUtils.isNotBlank(bo.getBatchNo()), WmsStockIoDetail::getBatchNo, bo.getBatchNo());
        return lqw;
    }

    private QueryWrapper<WmsStockIoDetail> buildQueryWrapperPlus(WmsStockIoDetailBo bo) {
        Map<String, Object> params = bo.getParams();
        QueryWrapper<WmsStockIoDetail> qw = new QueryWrapper<>();
        qw.eq("d.del_flag", 0); // 手动添加逻辑删除条件
        qw.eq(bo.getStockIoId() != null, "d.stock_io_id", bo.getStockIoId());
        qw.eq(bo.getWarehouseId() != null, "d.warehouse_id", bo.getWarehouseId());
        qw.eq(StringUtils.isNotBlank(bo.getItemType()), "d.item_type", bo.getItemType());
        qw.eq(bo.getItemId() != null, "d.item_id", bo.getItemId());
        qw.eq(bo.getQuantity() != null, "d.quantity", bo.getQuantity());
        qw.eq(StringUtils.isNotBlank(bo.getUnit()), "d.unit", bo.getUnit());
        qw.eq(StringUtils.isNotBlank(bo.getBatchNo()), "d.batch_no", bo.getBatchNo());
        return qw;
    }

    /**
     * 新增出入库单明细
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean insertByBo(WmsStockIoDetailBo bo) {
        // 检查主表状态，已审核的单据不能添加明细
        WmsStockIo stockIo = stockIoMapper.selectById(bo.getStockIoId());
        if (stockIo != null && stockIo.getStatus() >= 2) {
            throw new ServiceException("已审核的单据不能修改明细");
        }

        WmsStockIoDetail add = BeanUtil.toBean(bo, WmsStockIoDetail.class);
        validEntityBeforeSave(add);
        boolean flag = baseMapper.insert(add) > 0;
        if (flag) {
            bo.setDetailId(add.getDetailId());

            // 检查主表状态，如果有明细且状态为草稿，则自动变为待审核
            if (stockIo != null && stockIo.getStatus() == 0) {
                // 检查是否有明细
                Long detailCount = baseMapper.selectCount(
                    new LambdaQueryWrapper<WmsStockIoDetail>()
                        .eq(WmsStockIoDetail::getStockIoId, bo.getStockIoId())
                );

                if (detailCount > 0) {
                    // 自动更新状态为待审核
                    stockIo.setStatus(1);
                    stockIo.setUpdateTime(new Date());
                    stockIoMapper.updateById(stockIo);
                }
            }
        }
        return flag;
    }

    /**
     * 修改出入库单明细
     */
    @Override
    public Boolean updateByBo(WmsStockIoDetailBo bo) {
        // 检查主表状态，已审核的单据不能修改明细
        WmsStockIo stockIo = stockIoMapper.selectById(bo.getStockIoId());
        if (stockIo != null && stockIo.getStatus() >= 2) {
            throw new ServiceException("已审核的单据不能修改明细");
        }

        WmsStockIoDetail update = BeanUtil.toBean(bo, WmsStockIoDetail.class);
        validEntityBeforeSave(update);
        return baseMapper.updateById(update) > 0;
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(WmsStockIoDetail entity){
        //TODO 做一些数据校验,如唯一约束
    }

    /**
     * 批量删除出入库单明细
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
        if(isValid){
            //TODO 做一些业务上的校验,判断是否需要校验
        }

        // 获取要删除的明细对应的主表ID，检查状态
        List<WmsStockIoDetail> details = baseMapper.selectBatchIds(ids);
        if (details != null && !details.isEmpty()) {
            // 检查主表状态，已审核的单据不能删除明细
            for (WmsStockIoDetail detail : details) {
                WmsStockIo stockIo = stockIoMapper.selectById(detail.getStockIoId());
                if (stockIo != null && stockIo.getStatus() >= 2) {
                    throw new ServiceException("已审核的单据不能修改明细");
                }
            }
            // 按主表ID分组
            Map<Long, List<WmsStockIoDetail>> stockIoIdMap = details.stream()
                .collect(java.util.stream.Collectors.groupingBy(WmsStockIoDetail::getStockIoId));

            boolean flag = baseMapper.deleteBatchIds(ids) > 0;

            if (flag) {
                // 检查每个主表是否还有其他明细
                for (Long stockIoId : stockIoIdMap.keySet()) {
                    Long remainingCount = baseMapper.selectCount(
                        new LambdaQueryWrapper<WmsStockIoDetail>()
                            .eq(WmsStockIoDetail::getStockIoId, stockIoId)
                    );

                    // 如果没有明细了，状态回退为草稿
                    if (remainingCount == 0) {
                        WmsStockIo stockIo = stockIoMapper.selectById(stockIoId);
                        if (stockIo != null && stockIo.getStatus() == 1) {
                            stockIo.setStatus(0);
                            stockIo.setUpdateTime(new Date());
                            stockIoMapper.updateById(stockIo);
                        }
                    }
                }
            }

            return flag;
        }

        return baseMapper.deleteBatchIds(ids) > 0;
    }
}