package com.ruoyi.inventory.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.ruoyi.basic.excel.SupplierManageExcelDto;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.inventory.dto.StockoutDto;
import com.ruoyi.inventory.excel.StockOutExcelDto;
import com.ruoyi.inventory.mapper.StockManagementMapper;
import com.ruoyi.inventory.mapper.StockOutMapper;
import com.ruoyi.inventory.pojo.StockManagement;
import com.ruoyi.inventory.pojo.StockOut;
import com.ruoyi.inventory.service.StockOutService;

import lombok.AllArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.servlet.http.HttpServletResponse;
import java.util.Date;
import java.util.List;

@Service
public class StockOutServiceImpl implements StockOutService {
    @Autowired
    private StockOutMapper stockOutMapper;
    @Autowired
    private StockManagementMapper stockManagementMapper;


    @Override
    public int delStockOut(List<Integer> ids) {
        return stockOutMapper.deleteBatchIds(ids);
    }

    @Override
    public StockOut getStockOutById(Long id) {
        StockOut stockOut = stockOutMapper.selectById(id);
        return stockOut;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void saveStockout(StockOut stockOut) {
//    进行判断是否存在相同的产品id和供应商id
        LambdaQueryWrapper<StockManagement> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(StockManagement::getProductId, stockOut.getProductId());
        queryWrapper.eq(StockManagement::getSupplierId, stockOut.getSupplierId());
        StockManagement stockManagement1 = stockManagementMapper.selectOne(queryWrapper);
        if (stockManagement1!= null) {
//            判断库存数量是否大于出库数量
            if (stockManagement1.getStockQuantity() < stockOut.getInboundQuantity()) {
                throw new RuntimeException("库存数量不足");
            }
            stockOutMapper.insert(stockOut);
            stockManagement1.setStockQuantity(stockManagement1.getStockQuantity() - stockOut.getInboundQuantity());
            stockManagement1.setInboundTime(new Date());
            stockManagementMapper.updateById(stockManagement1);
        }
        else {
            throw new RuntimeException("库存不存在");
        }
    }

    @Override
    public int updateStockOut(StockOut stockOut) {
//        需要进行判断在库存中是否存在该产品，如果存在，就进行修改，否则就抛出异常
        StockOut stockOut1 = stockOutMapper.selectById(stockOut.getId());
            LambdaQueryWrapper<StockManagement> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(StockManagement::getProductId, stockOut.getProductId());
            StockManagement stockManagement1 = stockManagementMapper.selectOne(queryWrapper);
            if (stockManagement1!= null) {
//                判断库存数量是否大于出库数量
                if (stockManagement1.getStockQuantity()+stockOut1.getInboundQuantity() < stockOut.getInboundQuantity()) {
                    throw new RuntimeException("库存数量不足");
                }
                stockManagement1.setStockQuantity(stockManagement1.getStockQuantity() + stockOut1.getInboundQuantity() - stockOut.getInboundQuantity());
                stockManagement1.setInboundTime(stockOut.getInboundTime());
                stockManagement1.setBoundTime(new Date());
                System.out.println(stockManagement1 + "22");
                stockManagementMapper.updateById(stockManagement1);
            } else {
                throw new RuntimeException("库存不存在");
            }
        return stockOutMapper.updateById(stockOut);
    }

    @Override
    public IPage<StockoutDto> selectStockOutPage(Page page, StockoutDto stockoutDto) {
        return stockOutMapper.selectStockOutBypage(page, stockoutDto);
    }

    @Override
    public void stockoutExport(HttpServletResponse response, StockoutDto stockoutDto) {
        List<StockOutExcelDto> stockoutList = stockOutMapper.stockoutExportList(stockoutDto);
        ExcelUtil<StockOutExcelDto> util = new ExcelUtil<StockOutExcelDto>(StockOutExcelDto.class);
        util.exportExcel(response, stockoutList, "供应商导出");
    }
}