package com.ruoyi.sales.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.approve.pojo.ApproveProcess;
import com.ruoyi.approve.service.impl.ApproveProcessServiceImpl;
import com.ruoyi.common.enums.FileNameType;
import com.ruoyi.common.enums.StockOutQualifiedRecordTypeEnum;
import com.ruoyi.other.service.impl.TempFileServiceImpl;
import com.ruoyi.procurementrecord.mapper.ReturnManagementMapper;
import com.ruoyi.procurementrecord.mapper.ReturnSaleProductMapper;
import com.ruoyi.procurementrecord.pojo.ReturnManagement;
import com.ruoyi.procurementrecord.pojo.ReturnSaleProduct;
import com.ruoyi.procurementrecord.service.impl.ReturnManagementServiceImpl;
import com.ruoyi.procurementrecord.utils.StockUtils;
import com.ruoyi.sales.dto.SalesLedgerProductDto;
import com.ruoyi.sales.dto.ShippingInfoDto;
import com.ruoyi.sales.mapper.SalesLedgerProductMapper;
import com.ruoyi.sales.mapper.ShippingInfoDetailMapper;
import com.ruoyi.sales.mapper.ShippingInfoMapper;
import com.ruoyi.sales.pojo.SalesLedgerProduct;
import com.ruoyi.sales.pojo.ShippingInfo;
import com.ruoyi.sales.pojo.ShippingInfoDetail;
import com.ruoyi.sales.service.ShippingInfoDetailService;
import com.ruoyi.sales.service.ShippingInfoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

/**
 * @author :yys
 * @date : 2025/10/22 9:33
 */
@Service
@Slf4j
public class ShippingInfoServiceImpl extends ServiceImpl<ShippingInfoMapper, ShippingInfo> implements ShippingInfoService {

    @Autowired
    private ShippingInfoMapper shippingInfoMapper;

    @Autowired
    private SalesLedgerProductMapper salesLedgerProductMapper;
    @Autowired
    private StockUtils stockUtils;
    @Autowired
    private CommonFileServiceImpl commonFileService;

    @Autowired
    private ApproveProcessServiceImpl approveProcessService;

    @Autowired
    private ShippingInfoDetailMapper shippingInfoDetailMapper;

    @Autowired
    private ShippingInfoDetailService shippingInfoDetailService;

    @Autowired
    private ReturnManagementMapper returnManagementMapper;

    @Autowired
    private ReturnSaleProductMapper returnSaleProductMapper;

    @Autowired
    private ReturnManagementServiceImpl returnManagementService;

    @Override
    public List<SalesLedgerProductDto> getReturnManagementDtoById(Long shippingId) {
        return shippingInfoMapper.getReturnManagementDtoById(shippingId );

    }

    /**
     * 获取销售产品单的已发货数量
     */
    @Override
    public Map<String, BigDecimal> getNumberOfSalesLedgerProduct(Long salesLedgerProductId) {
        Map<String, BigDecimal> map = new HashMap<>();
        map.put("shippingNum",BigDecimal.ZERO); // 发货数量
        map.put("returnNum",BigDecimal.ZERO); // 退货数量
        List<ShippingInfo> shippingInfos = shippingInfoMapper.selectList(new LambdaQueryWrapper<ShippingInfo>()
                .eq(ShippingInfo::getSalesLedgerProductId, salesLedgerProductId)
                // 只筛选“发货中”和“已发货”两种状态
                .in(ShippingInfo::getStatus, "发货中", "已发货"));
        if(CollectionUtils.isEmpty(shippingInfos)){
            return map;
        }
        List<ShippingInfoDetail> shippingInfoDetails = shippingInfoDetailMapper.selectList(new LambdaQueryWrapper<ShippingInfoDetail>()
                .in(ShippingInfoDetail::getShippingInfoId, shippingInfos.stream().map(ShippingInfo::getId).collect(Collectors.toList())));
        if(CollectionUtils.isEmpty(shippingInfoDetails)){
            return map;
        }
        // 获取发货数量
        map.put("shippingNum",shippingInfoDetails.stream().map(ShippingInfoDetail::getShippingNum).reduce(BigDecimal.ZERO, BigDecimal::add));
        // 获取退货数量
        List<ReturnSaleProduct> returnSaleProducts = returnSaleProductMapper.selectList(new LambdaQueryWrapper<ReturnSaleProduct>()
                .eq(ReturnSaleProduct::getReturnSaleLedgerProductId, salesLedgerProductId)
                .eq(ReturnSaleProduct::getStatus,1));
        if(CollectionUtils.isEmpty(returnSaleProducts)){
            return map;
        }
        map.put("returnNum",returnSaleProducts.stream().map(ReturnSaleProduct::getNum).reduce(BigDecimal.ZERO, BigDecimal::add));
        return map;
    }

    @Override
    public ShippingInfoDto getDateil(Long id) {
        ShippingInfoDto shippingInfoDto =  shippingInfoMapper.getDateil(id);
        if(shippingInfoDto != null){
            assembleDetails(shippingInfoDto);
        }
        return shippingInfoDto;
    }

    @Override
    public List<ShippingInfo> getShippingInfoByCustomerName(String customerName) {
        return shippingInfoMapper.getShippingInfoByCustomerName(customerName);
    }

    @Override
    public IPage<ShippingInfoDto> listPage(Page page, ShippingInfo req) {
        IPage<ShippingInfoDto> listPage = shippingInfoMapper.listPage(page, req);
        listPage.getRecords().forEach(this::assembleDetails);
        return listPage;
    }


    /**
     * 封装详情
     * @param item
     */
    public void assembleDetails(ShippingInfoDto item) {
        item.setCommonFileList(commonFileService.getFileListByBusinessId(item.getId(), FileNameType.SHIP.getValue()));
        List<ShippingInfoDetail> shippingInfoDetails = shippingInfoDetailMapper.selectList(new LambdaQueryWrapper<ShippingInfoDetail>()
                .eq(ShippingInfoDetail::getShippingInfoId, item.getId()));
        // 核心优化：层层防护空指针 + 处理空集合场景
        item.setShippingSuccessTotal(Optional.ofNullable(shippingInfoDetails)
                .orElse(Collections.emptyList())
                .stream()
                .filter(Objects::nonNull)
                .map(ShippingInfoDetail::getShippingNum)
                .filter(Objects::nonNull)
                .reduce(BigDecimal.ZERO, BigDecimal::add)); // 用Lambda替代方法引用
        item.setWaitShippingTotal(item.getShippingTotal().subtract(item.getShippingSuccessTotal()));
        // 查询退货数量
        if(CollectionUtils.isNotEmpty(shippingInfoDetails)){
            item.setReturnTotal(returnManagementService.getReturnSaleProductCountByShippingId(shippingInfoDetails
                    .stream()
                    .map(ShippingInfoDetail::getId)
                    .collect(Collectors.toList())));
        }
    }

    @Override
    public boolean deductStock(ShippingInfoDto req) throws IOException {
        ShippingInfo byId = this.getById(req.getId());
        if (byId == null) {
            throw new RuntimeException("发货信息不存在");
        }
        //扣减库存
        SalesLedgerProduct salesLedgerProduct = salesLedgerProductMapper.selectById(byId.getSalesLedgerProductId());
        stockUtils.substractStock(salesLedgerProduct.getProductModelId(), req.getShippingTotal(), StockOutQualifiedRecordTypeEnum.SALE_SHIP_STOCK_OUT.getCode(), req.getId());
        byId.setExpressNumber(req.getExpressNumber());
        byId.setExpressCompany(req.getExpressCompany());
        byId.setStatus(req.getStatus());
        byId.setShippingCarNumber(req.getShippingCarNumber());
        return this.updateById(byId);
    }

    @Override
    public boolean delete(List<Long> ids) {
        List<ShippingInfo> shippingInfos = shippingInfoMapper.selectList(new LambdaQueryWrapper<ShippingInfo>()
                .in(ShippingInfo::getId, ids));
        if(CollectionUtils.isEmpty(shippingInfos)) return false;
        // 删除子表
        List<ShippingInfoDetail> shippingInfoDetails = shippingInfoDetailMapper.selectList(new LambdaQueryWrapper<ShippingInfoDetail>()
                .in(ShippingInfoDetail::getShippingInfoId, ids));
        if(CollectionUtils.isNotEmpty(shippingInfoDetails)){
            shippingInfoDetailService.delete(shippingInfoDetails.stream().map(ShippingInfoDetail::getId).collect(Collectors.toList()));
        }
        // 扣已发货库存
        for (ShippingInfo shippingInfo : shippingInfos) {
            if("已发货".equals(shippingInfo.getStatus())) {
                stockUtils.deleteStockOutRecord(shippingInfo.getId(), StockOutQualifiedRecordTypeEnum.SALE_SHIP_STOCK_OUT.getCode());
            }
        }
        // 删除发货审批
        if(CollectionUtils.isNotEmpty(shippingInfos)){
            for (ShippingInfo shippingInfo : shippingInfos){
                ApproveProcess one = approveProcessService.getOne(new LambdaQueryWrapper<ApproveProcess>()
                        .like(ApproveProcess::getApproveReason, shippingInfo.getShippingNo()));
                if(one != null){
                    approveProcessService.delByIds(Collections.singletonList(one.getId()));
                }
            }
        }

        return this.removeBatchByIds(ids);
    }
}