package com.ruoyi.basic.service.impl;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import com.baomidou.mybatisplus.core.metadata.IPage;
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import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
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import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import com.ruoyi.basic.dto.ProductDto;
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import com.ruoyi.basic.dto.ProductTreeDto;
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import com.ruoyi.basic.mapper.ProductMapper;
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import com.ruoyi.basic.mapper.ProductModelMapper;
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import com.ruoyi.basic.pojo.Product;
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import com.ruoyi.basic.pojo.ProductModel;
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import com.ruoyi.basic.service.IProductService;
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import com.ruoyi.basic.vo.ProductModelVo;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.common.utils.bean.BeanUtils;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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@Service
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@AllArgsConstructor
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@Slf4j
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public class ProductServiceImpl extends ServiceImpl<ProductMapper, Product> implements IProductService {
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private ProductMapper productMapper;
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private ProductModelMapper productModelMapper;
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@Override
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public List<ProductTreeDto> selectProductList(ProductDto productDto) {
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// 查询根节点（parentId 为 null）
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LambdaQueryWrapper<Product> queryWrapper = new LambdaQueryWrapper<>();
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queryWrapper.isNull(Product::getParentId);
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// 如果有产品名称条件，添加到查询中
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if (productDto.getProductName() != null && !productDto.getProductName().isEmpty()) {
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queryWrapper.like(Product::getProductName, productDto.getProductName());
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}
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// 查询根节点列表
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List<Product> rootProducts = productMapper.selectList(queryWrapper);
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// 转换为树节点并递归构建子树
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List<ProductTreeDto> tree = new ArrayList<>();
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for (Product product : rootProducts) {
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ProductTreeDto node = convertToTreeDto(product);
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node.setChildren(buildChildrenNodes(product.getId()));
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tree.add(node);
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}
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return tree;
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}
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@Override
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public IPage<ProductModelVo> listPageProductModel(Page<ProductModelVo> page, ProductModel productModel) {
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return productModelMapper.listPageProductModel(page, productModel);
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}
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// 递归构建子节点
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private List<ProductTreeDto> buildChildrenNodes(Long parentId) {
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// 查询当前父节点的子节点
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LambdaQueryWrapper<Product> queryWrapper = new LambdaQueryWrapper<>();
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queryWrapper.eq(Product::getParentId, parentId);
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List<Product> childProducts = productMapper.selectList(queryWrapper);
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// 转换子节点并递归构建它们的子树
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List<ProductTreeDto> children = new ArrayList<>();
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for (Product child : childProducts) {
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ProductTreeDto childNode = convertToTreeDto(child);
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childNode.setChildren(buildChildrenNodes(child.getId()));
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children.add(childNode);
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}
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return children;
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}
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// 将 Product 转换为 ProductTreeDto
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private ProductTreeDto convertToTreeDto(Product product) {
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ProductTreeDto dto = new ProductTreeDto();
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BeanUtils.copyProperties(product, dto);
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dto.setLabel(product.getProductName()); // 设置 label 为产品名称
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dto.setChildren(new ArrayList<>());
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return dto;
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}
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@Override
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public int addOrEditProduct(ProductDto productDto) {
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if (ObjectUtils.isEmpty(productDto.getParentId())) {
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throw new IllegalArgumentException("请选择父节点");
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}
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String productName = StringUtils.trim(productDto.getProductName());
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if (StringUtils.isEmpty(productName)) {
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throw new IllegalArgumentException("产品名称不能为空");
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}
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productDto.setProductName(productName);
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checkProductNameUnique(productDto.getParentId(), productName, productDto.getId());
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if (productDto.getId() == null) {
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// 新增产品逻辑
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// 检查父节点是否存在（可选，根据业务需求）
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Product parent = productMapper.selectById(productDto.getParentId());
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if (parent == null) {
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throw new IllegalArgumentException("父节点不存在，无法添加子产品");
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}
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return productMapper.insert(productDto);
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} else {
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// 编辑产品逻辑
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// 检查产品是否存在（可选，根据业务需求）
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Product existingProduct = productMapper.selectById(productDto.getId());
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if (existingProduct == null) {
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throw new IllegalArgumentException("要编辑的产品不存在");
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}
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return productMapper.updateById(productDto);
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}
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}
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private void checkProductNameUnique(Long parentId, String productName, Long currentId) {
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LambdaQueryWrapper<Product> queryWrapper = new LambdaQueryWrapper<>();
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queryWrapper.eq(Product::getParentId, parentId)
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.eq(Product::getProductName, productName)
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.ne(currentId != null, Product::getId, currentId)
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.last("limit 1");
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Product duplicateProduct = productMapper.selectOne(queryWrapper);
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if (duplicateProduct != null) {
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throw new IllegalArgumentException("对应的" + productName + "已经存在");
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}
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}
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@Override
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public void exportImportTemplate(HttpServletResponse response) {
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String templatePath = "static/产品导入模板.xlsx";
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try (InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(templatePath)) {
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if (inputStream == null) {
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throw new FileNotFoundException("模板文件不存在：" + templatePath);
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}
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response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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response.setCharacterEncoding("utf-8");
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String fileName = URLEncoder.encode("产品导入模板.xlsx", "utf-8").replaceAll("\\+", "%20");
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response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName);
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try (OutputStream outputStream = response.getOutputStream()) {
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byte[] buffer = new byte[1024];
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int len;
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while ((len = inputStream.read(buffer)) > 0) {
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outputStream.write(buffer, 0, len);
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}
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outputStream.flush();
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}
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} catch (IOException e) {
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log.error("导出产品导入模板失败", e);
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try {
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response.getWriter().write("模板导出失败：" + e.getMessage());
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} catch (IOException ex) {
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log.error("响应输出错误", ex);
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}
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}
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}
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@Override
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public int delProductByIds(Long[] ids) {
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LambdaQueryWrapper<ProductModel> queryWrapper = new LambdaQueryWrapper<>();
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queryWrapper.in(ProductModel::getProductId, ids);
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productModelMapper.delete(queryWrapper);
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return productMapper.deleteBatchIds(Arrays.asList(ids));
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}
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}
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