package com.ruoyi.stock.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.basic.excel.SupplierManageExcelDto;
import com.ruoyi.basic.pojo.SupplierManage;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.framework.web.domain.R;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.project.system.mapper.SysUserMapper;
import com.ruoyi.stock.dto.ManufacturerDto;
import com.ruoyi.stock.execl.ManufacturerExcelDto;
import com.ruoyi.stock.mapper.ManufacturerMapper;
import com.ruoyi.stock.mapper.StockInventoryMapper;
import com.ruoyi.stock.pojo.Manufacturer;
import com.ruoyi.stock.pojo.StockInventory;
import com.ruoyi.stock.service.ManufacturerService;
import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletResponse;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.List;

/**
 * <p>
 * 厂商服务实现类
 * </p>
 *
 * @author 芯导软件（江苏）有限公司
 * @since 2026-05-28 09:52:35
 */
@Service
@RequiredArgsConstructor
public class ManufacturerServiceImpl extends ServiceImpl<ManufacturerMapper, Manufacturer> implements ManufacturerService {

    private final StockInventoryMapper stockInventoryMapper;
    private final ManufacturerMapper manufacturerMapper;
    private final SysUserMapper sysUserMapper;

    /**
     * 厂商新增
     */
    @Override
    @Transactional
    public void saveManufacturer(Manufacturer manufacturer) {
        LambdaQueryWrapper<Manufacturer> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Manufacturer::getName,manufacturer.getName());
        if (baseMapper.selectCount(queryWrapper) > 0) {
            throw new RuntimeException("厂家已存在");
        }

        baseMapper.insert(manufacturer);
    }

    /**
     * 厂商删除
     */
    @Override
    @Transactional
    public int delManufacturer(List<Long> ids) {
        // 批量检查是否关联库存
        LambdaQueryWrapper<StockInventory> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(StockInventory::getManufacturerId, ids);
        List<StockInventory> inventoryList = stockInventoryMapper.selectList(queryWrapper);

        if (!inventoryList.isEmpty()) {
            throw new RuntimeException("厂商已关联库存，无法删除");
        }

        return baseMapper.deleteBatchIds(ids);
    }

    /**
     * 厂商详情
     */
    @Override
    public Manufacturer manufacturerDetail(Long id) {
        return baseMapper.selectById(id);
    }

    /**
     * 厂商修改
     */
    @Override
    @Transactional
    public int manufacturerUpdate(Manufacturer manufacturer) {
        return baseMapper.updateById(manufacturer);
    }

    /**
     * 厂商分页查询
     */
    @Override
    public IPage<Manufacturer> manufacturerListPage(Page page, ManufacturerDto manufacturerDto) {
        return manufacturerMapper.manufacturerListPage(page,manufacturerDto);
    }

    /**
     * 厂商导出
     */
    @Override
    public void manufacturerExport(HttpServletResponse response, ManufacturerDto manufacturerDto) {
        List<ManufacturerExcelDto> list = manufacturerMapper.manufacturerExportList(manufacturerDto);
        ExcelUtil<ManufacturerExcelDto> util = new ExcelUtil<>(ManufacturerExcelDto.class);
        util.exportExcel(response, list, "厂家数据");
    }

    /**
     * 厂商导入
     */
    @Override
    @Transactional
    public R importData(MultipartFile file) {
        try {
            ExcelUtil<ManufacturerExcelDto> util = new ExcelUtil<>(ManufacturerExcelDto.class);
            List<ManufacturerExcelDto> list = util.importExcel(file.getInputStream());
            ArrayList<Manufacturer> manufacturers = new ArrayList<>();
            list.stream().forEach(dto -> {
                Manufacturer manufacturer = new Manufacturer();
                BeanUtils.copyProperties(dto, manufacturer);
                manufacturer.setMaintainTime(LocalDate.now());

                // 检查厂家名称是否重复
                LambdaQueryWrapper<Manufacturer> queryWrapper = new LambdaQueryWrapper<>();
                queryWrapper.eq(Manufacturer::getName, manufacturer.getName());
                if (baseMapper.selectCount(queryWrapper) > 0) {
                    throw new RuntimeException("厂家名称已存在: " + manufacturer.getName());
                }

                if (StringUtils.isEmpty(dto.getMaintainUserName())) {
                    manufacturer.setMaintainUserId(SecurityUtils.getLoginUser().getUser().getUserId());
                } else {
                    SysUser sysUser = sysUserMapper.selectOne(new LambdaQueryWrapper<SysUser>().eq(SysUser::getNickName, dto.getMaintainUserName()));
                    if (sysUser == null) {
                        throw new RuntimeException("维护人不存在: " + dto.getMaintainUserName());
                    }
                    manufacturer.setMaintainUserId(sysUser.getUserId());
                }
                manufacturers.add(manufacturer);
            });
            this.saveOrUpdateBatch(manufacturers);
            return R.ok("导入成功");
        } catch (Exception e) {
            log.error("导入失败", e);
            return R.fail("导入失败: " + e.getMessage());
        }
    }
}