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.conditions.query.QueryWrapper;
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import com.baomidou.mybatisplus.core.metadata.IPage;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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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.mapper.CustomerMapper;
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import com.ruoyi.basic.pojo.Customer;
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import com.ruoyi.basic.service.ICustomerService;
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import com.ruoyi.common.utils.SecurityUtils;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.common.utils.poi.ExcelUtil;
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import com.ruoyi.framework.security.LoginUser;
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import com.ruoyi.framework.web.domain.AjaxResult;
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import com.ruoyi.project.system.domain.SysUser;
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import com.ruoyi.sales.mapper.SalesLedgerMapper;
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import com.ruoyi.sales.mapper.SalesLedgerProductMapper;
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import com.ruoyi.sales.pojo.SalesLedger;
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import com.ruoyi.sales.pojo.SalesLedgerProduct;
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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 org.springframework.util.CollectionUtils;
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import org.springframework.web.multipart.MultipartFile;
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import java.math.BigDecimal;
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import java.util.*;
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import java.util.stream.Collectors;
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/**
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* 客户档案Service业务层处理
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*
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* @author ruoyi
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* @date 2025-05-07
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*/
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@Service
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@AllArgsConstructor
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@Slf4j
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public class CustomerServiceImpl extends ServiceImpl<CustomerMapper, Customer> implements ICustomerService {
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private final SalesLedgerMapper salesLedgerMapper;
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private final SalesLedgerProductMapper salesLedgerProductMapper;
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private CustomerMapper customerMapper;
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/**
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* 查询客户档案
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*
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* @param id 客户档案主键
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* @return 客户档案
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*/
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@Override
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public Customer selectCustomerById(Long id) {
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return customerMapper.selectById(id);
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}
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/**
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* 查询客户档案列表
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*
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* @param customer 客户档案
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* @return 客户档案
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*/
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@Override
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public IPage<Customer> selectCustomerList(Page page, Customer customer) {
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// 1. 处理空值场景（参数校验）
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if (page == null) {
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page = Page.of(1, 10); // 默认第1页，每页10条数据
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}
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if (customer == null) {
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customer = new Customer(); // 避免空对象导致的NPE
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}
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// 2. 构建查询条件（增强空值安全）
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LambdaQueryWrapper<Customer> queryWrapper = new LambdaQueryWrapper<>();
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String customerName = customer.getCustomerName();
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String customerType = customer.getCustomerType();
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if (StringUtils.isNotBlank(customerName)) {
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queryWrapper.like(Customer::getCustomerName, customerName);
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}
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if (StringUtils.isNotBlank(customerType)) {
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queryWrapper.like(Customer::getCustomerType, customerType);
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}
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// 3. 执行分页查询（保留分页元数据）
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IPage<Customer> customerPage = customerMapper.selectPage(page, queryWrapper);
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// 4. 数据处理（增强空值安全 & 代码可读性）
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List<Customer> processedList = customerPage.getRecords().stream()
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.filter(Objects::nonNull) // 过滤空对象（避免后续操作NPE）
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.peek(c -> {
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// 安全获取字段，避免null值拼接
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String address = StringUtils.defaultString(c.getCompanyAddress(), "");
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String phone = StringUtils.defaultString(c.getCompanyPhone(), "");
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c.setAddressPhone(address + "(" + phone + ")"); // 优化字符串拼接
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// 查询该客户关联的销售台账中，购买次数、平均金额、最近购买时间
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List<SalesLedger> salesLedgers = salesLedgerMapper.selectList(new QueryWrapper<SalesLedger>().lambda().eq(SalesLedger::getCustomerId, c.getId()));
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if (!CollectionUtils.isEmpty(salesLedgers)) {
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// 计算购买次数
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int purchaseCount = salesLedgers.size();
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c.setPurchaseCount(purchaseCount);
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// 计算平均金额
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if (purchaseCount > 0) {
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BigDecimal totalAmount = salesLedgers.stream()
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.map(SalesLedger::getContractAmount)
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.filter(Objects::nonNull)
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.reduce(BigDecimal.ZERO, BigDecimal::add);
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BigDecimal averageAmount = totalAmount.divide(BigDecimal.valueOf(purchaseCount), 2, BigDecimal.ROUND_HALF_UP);
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c.setAverageAmount(averageAmount);
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} else {
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c.setAverageAmount(BigDecimal.ZERO);
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}
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// 计算最近购买时间
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SalesLedger latestLedger = salesLedgers.stream()
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.max((l1, l2) -> l1.getExecutionDate().compareTo(l2.getExecutionDate()))
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.orElse(null);
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if (latestLedger != null) {
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c.setLatestPurchaseTime(latestLedger.getExecutionDate());
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}
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// 计算常购产品（top 3）
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List<SalesLedgerProduct> allProducts = new ArrayList<>();
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for (SalesLedger ledger : salesLedgers) {
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List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(
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new QueryWrapper<SalesLedgerProduct>().lambda()
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.eq(SalesLedgerProduct::getSalesLedgerId, ledger.getId())
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);
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if (!CollectionUtils.isEmpty(products)) {
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allProducts.addAll(products);
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}
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}
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if (!CollectionUtils.isEmpty(allProducts)) {
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// 按产品类别和规格型号分组，统计购买次数
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Map<String, Long> productCountMap = allProducts.stream()
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.collect(Collectors.groupingBy(
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p -> p.getProductCategory() + "-" + p.getSpecificationModel(),
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Collectors.counting()
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));
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// 排序并取前3
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List<String> topProducts = productCountMap.entrySet().stream()
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.sorted(Map.Entry.<String, Long>comparingByValue().reversed())
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.limit(3)
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.map(Map.Entry::getKey)
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.collect(Collectors.toList());
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c.setTopProducts(topProducts);
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} else {
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c.setTopProducts(new ArrayList<>());
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}
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} else {
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// 没有销售记录时设置默认值
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c.setPurchaseCount(0);
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c.setAverageAmount(BigDecimal.ZERO);
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c.setLatestPurchaseTime(null);
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c.setTopProducts(new ArrayList<>());
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}
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})
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.collect(Collectors.toList());
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// 5. 更新分页结果中的数据（保持分页信息完整）
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customerPage.setRecords(processedList);
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return customerPage; // 返回包含分页信息的IPage对象
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}
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/**
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* 新增客户档案
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*
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* @param customer 客户档案
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* @return 结果
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*/
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@Override
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public int insertCustomer(Customer customer) {
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LoginUser loginUser = SecurityUtils.getLoginUser();
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Long tenantId = loginUser.getTenantId();
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customer.setTenantId(tenantId);
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return customerMapper.insert(customer);
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}
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/**
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* 修改客户档案
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*
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* @param customer 客户档案
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* @return 结果
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*/
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@Override
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public int updateCustomer(Customer customer) {
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LoginUser loginUser = SecurityUtils.getLoginUser();
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Long tenantId = loginUser.getTenantId();
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customer.setTenantId(tenantId);
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return customerMapper.updateById(customer);
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}
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/**
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* 批量删除客户档案
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*
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* @param ids 需要删除的客户档案主键
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* @return 结果
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*/
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@Override
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public int deleteCustomerByIds(Long[] ids) {
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List<Long> idList = Arrays.asList(ids);
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List<SalesLedger> salesLedgers = salesLedgerMapper.selectList(new QueryWrapper<SalesLedger>().lambda().in(SalesLedger::getCustomerId, idList));
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if (!salesLedgers.isEmpty()) {
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throw new RuntimeException("客户档案下有销售合同，请先删除销售合同");
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}
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return customerMapper.deleteBatchIds(idList);
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}
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@Override
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public List<Customer> selectCustomerListByIds(Long[] ids) {
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LambdaQueryWrapper<Customer> queryWrapper = new LambdaQueryWrapper<>();
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queryWrapper.in(Customer::getId, Arrays.asList(ids));
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return customerMapper.selectList(queryWrapper);
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}
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@Override
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public List<Customer> selectCustomerLists(Customer customer) {
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return customerMapper.selectList(null);
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}
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@Override
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public AjaxResult importData(MultipartFile file) {
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try {
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ExcelUtil<Customer> util = new ExcelUtil<Customer>(Customer.class);
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List<Customer> userList = util.importExcel(file.getInputStream());
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if(CollectionUtils.isEmpty(userList)){
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return AjaxResult.warn("模板错误或导入数据为空");
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}
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this.saveOrUpdateBatch(userList);
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return AjaxResult.success(true);
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}catch (Exception e){
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e.printStackTrace();
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return AjaxResult.error("导入失败");
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}
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}
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@Override
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public List<Map<String, Object>> customerList(Customer customer) {
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LambdaQueryWrapper<Customer> queryWrapper = Wrappers.lambdaQuery();
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queryWrapper.select(Customer::getId, Customer::getCustomerName, Customer::getTaxpayerIdentificationNumber);
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// 获取原始查询结果
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List<Map<String, Object>> result = customerMapper.selectMaps(queryWrapper);
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// 将下划线命名转换为驼峰命名
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return result.stream().map(map -> map.entrySet().stream()
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.collect(Collectors.toMap(
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entry -> underlineToCamel(entry.getKey()),
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Map.Entry::getValue))
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).collect(Collectors.toList());
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}
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/**
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* 下划线命名转驼峰命名
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*/
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private String underlineToCamel(String param) {
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if (param == null || "".equals(param.trim())) {
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return "";
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}
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int len = param.length();
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StringBuilder sb = new StringBuilder(len);
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for (int i = 0; i < len; i++) {
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char c = param.charAt(i);
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if (c == '_') {
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if (++i < len) {
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sb.append(Character.toUpperCase(param.charAt(i)));
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}
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} else {
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sb.append(Character.toLowerCase(c));
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}
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}
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return sb.toString();
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}
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}
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