yuan
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package com.ruoyi.sales.service.impl;
 
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
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.account.mapper.sales.AccountInvoiceApplicationMapper;
import com.ruoyi.account.mapper.sales.AccountSalesCollectionMapper;
import com.ruoyi.account.pojo.sales.AccountInvoiceApplication;
import com.ruoyi.account.pojo.sales.AccountSalesCollection;
import com.ruoyi.approve.bean.dto.ApprovalInstanceDto;
import com.ruoyi.approve.pojo.ApprovalTemplate;
import com.ruoyi.approve.service.ApprovalInstanceService;
import com.ruoyi.approve.service.ApprovalTemplateService;
import com.ruoyi.basic.enums.ApplicationTypeEnum;
import com.ruoyi.basic.enums.RecordTypeEnum;
import com.ruoyi.basic.mapper.CustomerMapper;
import com.ruoyi.basic.mapper.CustomerUserMapper;
import com.ruoyi.basic.mapper.ProductMapper;
import com.ruoyi.basic.mapper.ProductModelMapper;
import com.ruoyi.basic.pojo.Customer;
import com.ruoyi.basic.pojo.CustomerUser;
import com.ruoyi.basic.pojo.Product;
import com.ruoyi.basic.pojo.ProductModel;
import com.ruoyi.basic.utils.FileUtil;
import com.ruoyi.common.enums.FileNameType;
import com.ruoyi.common.enums.SaleEnum;
import com.ruoyi.common.enums.TypeEnums;
import com.ruoyi.common.exception.base.BaseException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.EnumUtil;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.framework.security.LoginUser;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.other.mapper.TempFileMapper;
import com.ruoyi.production.mapper.ProductionProductInputMapper;
import com.ruoyi.production.mapper.ProductionProductMainMapper;
import com.ruoyi.production.mapper.ProductionProductOutputMapper;
import com.ruoyi.production.service.ProductionProductMainService;
import com.ruoyi.project.system.domain.SysDept;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.project.system.mapper.SysDeptMapper;
import com.ruoyi.project.system.mapper.SysUserMapper;
import com.ruoyi.purchase.dto.SimpleReturnOrderGroupDto;
import com.ruoyi.purchase.mapper.PurchaseReturnOrderProductsMapper;
import com.ruoyi.quality.mapper.QualityInspectMapper;
import com.ruoyi.sales.dto.*;
import com.ruoyi.sales.mapper.CommonFileMapper;
import com.ruoyi.sales.mapper.SalesLedgerMapper;
import com.ruoyi.sales.mapper.SalesLedgerProductMapper;
import com.ruoyi.sales.mapper.ShippingInfoMapper;
import com.ruoyi.sales.pojo.CommonFile;
import com.ruoyi.sales.pojo.SalesLedger;
import com.ruoyi.sales.pojo.SalesLedgerProduct;
import com.ruoyi.sales.pojo.ShippingInfo;
import com.ruoyi.sales.service.ISalesLedgerService;
import com.ruoyi.sales.vo.SalesLedgerVo;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.jetbrains.annotations.Nullable;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.interceptor.TransactionAspectSupport;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.web.multipart.MultipartFile;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 
import java.io.InputStream;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.YearMonth;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import java.util.stream.Collectors;
 
/**
 * 销售台账Service业务层处理
 *
 * @author ruoyi
 * @date 2025-05-08
 */
@Service
@RequiredArgsConstructor
@Slf4j
public class SalesLedgerServiceImpl extends ServiceImpl<SalesLedgerMapper, SalesLedger> implements ISalesLedgerService {
    private static final String LOCK_PREFIX = "contract_no_lock:";
    private static final long LOCK_WAIT_TIMEOUT = 10; // 锁等待超时时间(秒)
    private static final long LOCK_EXPIRE_TIME = 30;  // 锁自动过期时间(秒)
    /** 导入自动新增客户时,除客户名称外其余信息的默认填充值 */
    private static final String IMPORT_DEFAULT_VALUE = "/";
    /** 导入自动新增产品大类时挂载的顶级产品节点名称 */
    private static final String FINISHED_PRODUCT_NAME = "成品";
    private final SalesLedgerMapper salesLedgerMapper;
    private final CustomerMapper customerMapper;
    private final CustomerUserMapper customerUserMapper;
    private final SalesLedgerProductMapper salesLedgerProductMapper;
    private final SalesLedgerProductServiceImpl salesLedgerProductServiceImpl;
    private final CommonFileMapper commonFileMapper;
    private final TempFileMapper tempFileMapper;
    private final ShippingInfoServiceImpl shippingInfoServiceImpl;
    private final CommonFileServiceImpl commonFileService;
    private final ShippingInfoMapper shippingInfoMapper;
    private final ProductionProductMainMapper productionProductMainMapper;
    private final ProductionProductOutputMapper productionProductOutputMapper;
    private final ProductionProductInputMapper productionProductInputMapper;
    private final QualityInspectMapper qualityInspectMapper;
    private final RedisTemplate<String, String> redisTemplate;
    private final FileUtil fileUtil;
    private final AccountInvoiceApplicationMapper accountInvoiceApplicationMapper;
    private final AccountSalesCollectionMapper accountSalesCollectionMapper;
 
    @Autowired
    private SysDeptMapper sysDeptMapper;
    @Value("${file.upload-dir}")
    private String uploadDir;
    @Autowired
    private ProductModelMapper productModelMapper;
 
    @Autowired
    private ProductMapper productMapper;
    @Autowired
    private ProductionProductMainService productionProductMainService;
    @Autowired
    private PurchaseReturnOrderProductsMapper purchaseReturnOrderProductsMapper;
    ;
    @Autowired
    private SysUserMapper sysUserMapper;
 
    @Autowired
    private ApprovalInstanceService approvalInstanceService;
    @Autowired
    private ApprovalTemplateService approvalTemplateService;
 
    @Override
    public List<SalesLedger> selectSalesLedgerList(SalesLedgerDto salesLedgerDto) {
        return salesLedgerMapper.selectSalesLedgerList(salesLedgerDto);
    }
 
    public List<SalesLedgerProduct> getSalesLedgerProductListByRelateId(Long relateId, SaleEnum type) {
        LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
        productWrapper.eq(SalesLedgerProduct::getSalesLedgerId, relateId);
        productWrapper.eq(SalesLedgerProduct::getType, type.getCode());
        return salesLedgerProductMapper.selectList(productWrapper);
    }
 
    @Override
    public List<SalesLedgerProduct> getSalesLedgerProductListByIds(@Nullable List<Long> relateIds, SaleEnum type) {
        if (CollectionUtils.isEmpty(relateIds)) {
            return Collections.emptyList();
        }
        LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
        productWrapper.in(SalesLedgerProduct::getId, relateIds);
        productWrapper.eq(SalesLedgerProduct::getType, type.getCode());
        List<SalesLedgerProduct> salesLedgerProducts = salesLedgerProductMapper.selectList(productWrapper);
        if (type.equals(SaleEnum.PURCHASE)) {
            // 查询退货信息
            List<Long> productIds = salesLedgerProducts.stream().map(SalesLedgerProduct::getProductModelId).collect(Collectors.toList());
            List<SimpleReturnOrderGroupDto> groupListByProductIds = new ArrayList<>();
            if(CollectionUtils.isNotEmpty(productIds)){
                groupListByProductIds = purchaseReturnOrderProductsMapper.getReturnOrderGroupListByProductIds(productIds);
            }
            Map<Long, BigDecimal> returnOrderGroupDtoMap = groupListByProductIds.stream().collect(Collectors.toMap(SimpleReturnOrderGroupDto::getProductModelId, SimpleReturnOrderGroupDto::getSumReturnQuantity));
            salesLedgerProducts.forEach(item -> {
                BigDecimal returnQuality = returnOrderGroupDtoMap.getOrDefault(item.getProductModelId(), BigDecimal.ZERO);
                item.setReturnQuality(returnQuality);
                item.setAvailableQuality(item.getQuantity().subtract(returnQuality));
            });
        }
        return salesLedgerProducts;
    }
 
    @Override
    public SalesLedgerDto getSalesLedgerWithProducts(SalesLedgerDto salesLedgerDto) {
        // 1. 查询主表
        SalesLedger salesLedger = salesLedgerMapper.selectById(salesLedgerDto.getId());
        if (salesLedger == null) {
            throw new BaseException("台账不存在");
        }
 
        // 2. 查询子表
        LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
        productWrapper.eq(SalesLedgerProduct::getSalesLedgerId, salesLedger.getId());
        productWrapper.eq(SalesLedgerProduct::getType, 1);
        List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(productWrapper);
        for (SalesLedgerProduct product : products) {
            product.setRegister(SecurityUtils.getLoginUser().getUser().getNickName());
            product.setRegisterDate(LocalDateTime.now());
            // 发货信息
            ShippingInfo shippingInfo = shippingInfoMapper.selectOne(new LambdaQueryWrapper<ShippingInfo>()
                    .eq(ShippingInfo::getSalesLedgerProductId, product.getId())
                    .orderByDesc(ShippingInfo::getCreateTime)
                    .last("limit 1"));
            if (shippingInfo != null) {
                product.setShippingStatus(shippingInfo.getStatus());
            }
        }
 
        // 3.查询上传文件
        LambdaQueryWrapper<CommonFile> salesLedgerFileWrapper = new LambdaQueryWrapper<>();
        salesLedgerFileWrapper.eq(CommonFile::getCommonId, salesLedger.getId())
                .eq(CommonFile::getType, FileNameType.SALE.getValue());
        List<CommonFile> salesLedgerFiles = commonFileMapper.selectList(salesLedgerFileWrapper);
 
        // 4. 转换 DTO
        SalesLedgerDto resultDto = new SalesLedgerDto();
        BeanUtils.copyProperties(salesLedger, resultDto);
        if (!products.isEmpty()) {
            resultDto.setHasChildren(true);
            resultDto.setProductData(products);
            resultDto.setSalesLedgerFiles(salesLedgerFiles);
        }
        return resultDto;
    }
 
    @Override
    public List<Map<String, Object>> getSalesNo() {
        LambdaQueryWrapper<SalesLedger> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.select(SalesLedger::getId, SalesLedger::getSalesContractNo, SalesLedger::getProjectName);
 
        // 获取原始查询结果
        List<Map<String, Object>> result = salesLedgerMapper.selectMaps(queryWrapper);
 
        // 将下划线命名转换为驼峰命名
        return result.stream().map(map -> map.entrySet().stream()
                .collect(Collectors.toMap(
                        entry -> underlineToCamel(entry.getKey()),
                        Map.Entry::getValue))
        ).collect(Collectors.toList());
    }
 
    @Override
    public BigDecimal getContractAmount() {
        LocalDate now = LocalDate.now();
        YearMonth currentMonth = YearMonth.from(now);
 
        // 创建LambdaQueryWrapper
        LambdaQueryWrapper<SalesLedger> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.ge(SalesLedger::getEntryDate, currentMonth.atDay(1).atStartOfDay())  // 大于等于本月第一天
                .lt(SalesLedger::getEntryDate, currentMonth.plusMonths(1).atDay(1).atStartOfDay()); // 小于下月第一天
 
        // 执行查询并计算总和
        List<SalesLedger> salesLedgers = salesLedgerMapper.selectList(queryWrapper);
 
        BigDecimal totalContractAmount = salesLedgers.stream()
                .map(SalesLedger::getContractAmount)
                .filter(Objects::nonNull)
                .reduce(BigDecimal.ZERO, BigDecimal::add);
 
        return totalContractAmount;
    }
 
    @Override
    public List getTopFiveList() {
        // 查询原始数据
        LambdaQueryWrapper<SalesLedger> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.select(SalesLedger::getCustomerId,
                        SalesLedger::getCustomerName,
                        SalesLedger::getContractAmount)
                .orderByDesc(SalesLedger::getContractAmount);
        List<SalesLedger> records = salesLedgerMapper.selectList(queryWrapper);
 
        // 按客户ID分组并聚合金额
        Map<Long, GroupedCustomer> groupedMap = new LinkedHashMap<>(); // 使用LinkedHashMap保持排序
        for (SalesLedger record : records) {
            groupedMap.computeIfAbsent(record.getCustomerId(),
                            k -> new GroupedCustomer(record.getCustomerId(), record.getCustomerName()))
                    .addAmount(record.getContractAmount());
        }
 
        // 转换为结果列表并取前5
        return groupedMap.values().stream()
                .sorted(Comparator.comparing(GroupedCustomer::getTotalAmount).reversed())
                .limit(5)
                .map(customer -> {
                    Map<String, Object> result = new HashMap<>();
                    result.put("customerId", customer.getCustomerId());
                    result.put("customerName", customer.getCustomerName());
                    result.put("totalAmount", customer.getTotalAmount());
                    return result;
                })
                .collect(Collectors.toList());
    }
 
    @Override
    public List<MonthlyAmountDto> getAmountHalfYear(Integer type) {
        LocalDate now = LocalDate.now();
        List<MonthlyAmountDto> result = new ArrayList<>();
        for (int i = 5; i >= 0; i--) {
            YearMonth yearMonth = YearMonth.from(now.minusMonths(i));
            LocalDate startTime = yearMonth.atDay(1);
            LocalDate endTime = yearMonth.atEndOfMonth();
            MonthlyAmountDto dto = new MonthlyAmountDto();
            dto.setMonth(yearMonth.format(DateTimeFormatter.ofPattern("yyyy-MM")));
            //回款金额
            List<AccountSalesCollection> accountSalesCollections = accountSalesCollectionMapper.selectList(new LambdaQueryWrapper<AccountSalesCollection>()
                    .between(AccountSalesCollection::getCollectionDate, startTime, endTime));
            BigDecimal totalIncome = Optional.of(
                    accountSalesCollections.stream()
                            .map(AccountSalesCollection::getCollectionAmount)
                            .filter(Objects::nonNull)
                            .reduce(BigDecimal.ZERO, BigDecimal::add)
            ).orElse(BigDecimal.ZERO);
            dto.setReceiptAmount(totalIncome);
            //开票金额
            List<AccountInvoiceApplication> accountInvoiceApplications = accountInvoiceApplicationMapper.selectList(new LambdaQueryWrapper<AccountInvoiceApplication>()
                            .eq(AccountInvoiceApplication::getStatus,1)
                    .between(AccountInvoiceApplication::getApplyDate, startTime, endTime));
            BigDecimal totalInvoiceAmount = Optional.of(
                    accountInvoiceApplications.stream()
                            .map(AccountInvoiceApplication::getInvoiceAmount)
                            .filter(Objects::nonNull)
                            .reduce(BigDecimal.ZERO, BigDecimal::add)
            ).orElse(BigDecimal.ZERO);
            dto.setInvoiceAmount(totalInvoiceAmount);
            result.add(dto);
        }
        return result;
    }
 
    @Override
    public IPage<SalesLedgerVo> selectSalesLedgerListPage(Page page, SalesLedgerDto salesLedgerDto) {
        return salesLedgerMapper.selectSalesLedgerListPage(page, salesLedgerDto);
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public AjaxResult importData(MultipartFile file) {
        LoginUser loginUser = SecurityUtils.getLoginUser();
        try {
            InputStream inputStream = file.getInputStream();
            ExcelUtil<SalesLedgerImportDto> salesLedgerImportDtoExcelUtil = new ExcelUtil<>(SalesLedgerImportDto.class);
            Map<String, List<SalesLedgerImportDto>> stringListMap = salesLedgerImportDtoExcelUtil.importExcelMultiSheet(Arrays.asList("销售台账数据", "销售产品数据"), inputStream, 0);
            if (CollectionUtils.isEmpty(stringListMap)) return AjaxResult.error("销售表格为空!");
            // 业务层合并
            List<SalesLedgerImportDto> salesLedgerImportDtoList = stringListMap.get("销售台账数据");
            if (CollectionUtils.isEmpty(salesLedgerImportDtoList)) return AjaxResult.error("销售台账数据为空!");
            List<SalesLedgerImportDto> salesLedgerProductImportDtoList = stringListMap.get("销售产品数据");
            if (CollectionUtils.isEmpty(salesLedgerProductImportDtoList)) return AjaxResult.error("销售产品数据为空!");
            // 客户数据 - 参考 listPage 查询私海客户(type = 0)
            // type = 0(私海客户)或者 type = 1(公海客户)且已被分配,并且是自己领用、自己创建或者共享给自己的客户
            // 客户不存在时自动新增并挂到自己名下,公海客户自动领用/共享给自己
            Long loginUserId = loginUser.getUser().getUserId();
            Map<String, Customer> customerCache = new HashMap<>();
            // 产品大类、规格型号缓存,key = 产品大类 + | + 规格型号,不存在时自动新增
            Map<String, ProductModel> productModelCache = new HashMap<>();
            // 录入人数据
            List<SysUser> sysUsers = sysUserMapper.selectList(new LambdaQueryWrapper<SysUser>().in(SysUser::getNickName,
                    salesLedgerImportDtoList.stream().map(SalesLedgerImportDto::getEntryPerson).collect(Collectors.toList())));
            for (SalesLedgerImportDto salesLedgerImportDto : salesLedgerImportDtoList) {
                SalesLedger salesLedger1 = salesLedgerMapper.selectOne(new LambdaQueryWrapper<SalesLedger>()
                        .eq(SalesLedger::getSalesContractNo, salesLedgerImportDto.getSalesContractNo())
                        .last("LIMIT 1"));
                if (salesLedger1 != null) {
                    continue;
                }
 
                // 判断业务员是否存在
                SysUser salesman = sysUserMapper.selectOne(new LambdaQueryWrapper<SysUser>()
                        .eq(SysUser::getNickName, salesLedgerImportDto.getSalesman()));
                if (salesman == null) {
                    throw new RuntimeException("业务员:" + salesLedgerImportDto.getSalesman() + "不存在!");
                }
                SalesLedger salesLedger = new SalesLedger();
                BeanUtils.copyProperties(salesLedgerImportDto, salesLedger);
                salesLedger.setExecutionDate(DateUtils.toLocalDate(salesLedgerImportDto.getExecutionDate()));
                salesLedger.setDeliveryDate(DateUtils.toLocalDate(salesLedgerImportDto.getDeliveryDate()));
                // 通过客户名称查询客户ID,客户合同号,客户不存在时自动新增
                Customer customer = resolveImportCustomer(salesLedger.getCustomerName(), loginUserId,
                        loginUser.getNickName(), customerCache);
                salesLedger.setCustomerId(customer.getId());
                salesLedger.setCustomerContractNo(customer.getTaxpayerIdentificationNumber());
                Long aLong = sysUsers.stream()
                        .filter(sysUser -> sysUser.getNickName().equals(salesLedger.getEntryPerson()))
                        .findFirst()
                        .map(SysUser::getUserId)
                        .orElse(null);
                if (aLong == null)
                    throw new RuntimeException("录入人:" + salesLedger.getEntryPerson() + ",无对应用户!");
                salesLedger.setEntryPerson(aLong.toString());
                // 销售产品数据绑定,通过销售单号获取对应销售产品数据
                List<SalesLedgerProductImportDto> salesLedgerProductImportDtos = salesLedgerProductImportDtoList.stream()
                        .filter(salesLedgerProductImportDto -> salesLedgerProductImportDto.getSalesContractNo().equals(salesLedger.getSalesContractNo()))
                        .collect(Collectors.toList());
                if (CollectionUtils.isEmpty(salesLedgerProductImportDtos))
                    throw new RuntimeException("销售单号:" + salesLedgerImportDto.getSalesContractNo() + ",无对应产品数据!");
                salesLedger.setContractAmount(salesLedgerProductImportDtos.stream()
                        .map(SalesLedgerProductImportDto::getTaxInclusiveTotalPrice)
                        .reduce(BigDecimal.ZERO, BigDecimal::add));
                salesLedgerMapper.insert(salesLedger);
 
 
                for (SalesLedgerProductImportDto salesLedgerProductImportDto : salesLedgerProductImportDtos) {
                    SalesLedgerProduct salesLedgerProduct = new SalesLedgerProduct();
                    BeanUtils.copyProperties(salesLedgerProductImportDto, salesLedgerProduct);
                    salesLedgerProduct.setSalesLedgerId(salesLedger.getId());
                    salesLedgerProduct.setType(1);
                    // 计算不含税总价
                    salesLedgerProduct.setTaxExclusiveTotalPrice(salesLedgerProduct.getTaxInclusiveTotalPrice().divide(new BigDecimal(1).add(salesLedgerProduct.getTaxRate().divide(new BigDecimal(100))), 6, RoundingMode.HALF_UP));
                    // 校验产品规格是否存在,产品大类、规格型号不存在时自动新增
                    ProductModel productModel = resolveImportProductModel(salesLedgerProduct.getProductCategory(),
                            salesLedgerProduct.getSpecificationModel(), salesLedgerProduct.getUnit(), productModelCache);
                    salesLedgerProduct.setProductModelId(productModel.getId());
                    salesLedgerProduct.setProductId(productModel.getProductId());
                    // 规格型号为空时取产品大类,单位为空时取规格型号上的单位
                    salesLedgerProduct.setSpecificationModel(productModel.getModel());
                    if (StringUtils.isEmpty(salesLedgerProduct.getUnit())) {
                        salesLedgerProduct.setUnit(productModel.getUnit());
                    }
                    salesLedgerProduct.setRegister(loginUser.getNickName());
                    salesLedgerProduct.setRegisterDate(LocalDateTime.now());
                    salesLedgerProduct.setApproveStatus(0);
                    salesLedgerProduct.setIsProduction(salesLedgerProductImportDto.getIsProduction() == 1);
                    salesLedgerProductMapper.insert(salesLedgerProduct);
                    // 添加生产数据
                    salesLedgerProductServiceImpl.addProductionData(salesLedgerProduct);
                }
            }
 
            return AjaxResult.success("导入成功");
        } catch (Exception e) {
            e.printStackTrace();
            // 导入过程中会自动新增客户、产品大类、规格型号,失败时需要回滚,避免残留脏数据
            if (TransactionSynchronizationManager.isActualTransactionActive()) {
                TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            }
            return AjaxResult.error("导入失败:" + e.getMessage());
        }
    }
 
    /**
     * 导入时获取客户,客户不存在则自动新增并挂到当前登录人名下
     * <p>
     * 1、当前登录人可用的客户(私海,或公海已分配且自己领用/创建/共享):直接使用;
     * 2、同名公海客户未分配:领用到自己名下;
     * 3、同名公海客户已分配给别人:共享给自己;
     * 4、同名客户在别人私海:报错,不新建;
     * 5、客户不存在:新增私海客户挂到自己名下,纳税人识别号、电话等信息填 "/"。
     */
    private Customer resolveImportCustomer(String customerName, Long loginUserId, String nickName,
                                           Map<String, Customer> customerCache) {
        String name = StringUtils.trim(customerName);
        if (StringUtils.isEmpty(name)) {
            throw new RuntimeException("客户名称不能为空!");
        }
        Customer cachedCustomer = customerCache.get(name);
        if (cachedCustomer != null) {
            return cachedCustomer;
        }
        // 当前登录人可用的客户
        Customer customer = customerMapper.selectOne(new QueryWrapper<Customer>()
                .eq("customer_name", name)
                .and(wrapper -> wrapper.eq("type", 0)
                        .or(wrapper2 -> wrapper2.eq("type", 1).eq("is_assigned", 1)))
                .and(wrapper -> wrapper.eq("usage_user", loginUserId)
                        .or(wrapper2 -> wrapper2.eq("create_user", loginUserId)
                                .or(wrapper3 -> wrapper3.exists("select 1 from customer_user cu where cu.customer_id = customer.id and cu.user_id = " + loginUserId))))
                .last("limit 1"));
        if (customer == null) {
            customer = claimOrCreateImportCustomer(name, loginUserId, nickName);
        }
        customerCache.put(name, customer);
        return customer;
    }
 
    /**
     * 同名客户不属于当前登录人时的处理:公海未分配的领用到自己名下,公海已分配的共享给自己,
     * 在别人私海的直接报错,都不存在则新增客户
     */
    private Customer claimOrCreateImportCustomer(String customerName, Long loginUserId, String nickName) {
        List<Customer> sameNameCustomers = customerMapper.selectList(new QueryWrapper<Customer>()
                .eq("customer_name", customerName)
                .orderByAsc("id"));
        // 公海未分配客户,领用到自己名下
        Optional<Customer> publicUnassigned = sameNameCustomers.stream()
                .filter(item -> Objects.equals(item.getType(), 1)
                        && (item.getIsAssigned() == null || item.getIsAssigned() == 0))
                .findFirst();
        if (publicUnassigned.isPresent()) {
            Customer customer = publicUnassigned.get();
            customer.setIsAssigned(1);
            customer.setUsageStatus(1L);
            customer.setUsageUser(loginUserId);
            customerMapper.updateById(customer);
            return customer;
        }
        // 公海已分配给别人的客户,共享给自己
        Optional<Customer> publicAssigned = sameNameCustomers.stream()
                .filter(item -> Objects.equals(item.getType(), 1) && Objects.equals(item.getIsAssigned(), 1))
                .findFirst();
        if (publicAssigned.isPresent()) {
            Customer customer = publicAssigned.get();
            CustomerUser customerUser = new CustomerUser();
            customerUser.setCustomerId(customer.getId());
            customerUser.setUserId(loginUserId);
            customerUserMapper.insert(customerUser);
            return customer;
        }
        // 剩下的都是别人的私海客户
        if (!sameNameCustomers.isEmpty()) {
            throw new RuntimeException("客户:" + customerName + "已在其他人私海中,无法导入!");
        }
        // 客户不存在,新增私海客户并挂到自己名下
        Customer customer = new Customer();
        customer.setCustomerName(customerName);
        customer.setCustomerType(IMPORT_DEFAULT_VALUE);
        customer.setTaxpayerIdentificationNumber(IMPORT_DEFAULT_VALUE);
        customer.setCompanyAddress(IMPORT_DEFAULT_VALUE);
        customer.setCompanyPhone(IMPORT_DEFAULT_VALUE);
        customer.setContactPerson(IMPORT_DEFAULT_VALUE);
        customer.setContactPhone(IMPORT_DEFAULT_VALUE);
        customer.setBasicBankAccount(IMPORT_DEFAULT_VALUE);
        customer.setBankAccount(IMPORT_DEFAULT_VALUE);
        customer.setBankCode(IMPORT_DEFAULT_VALUE);
        customer.setMaintainer(nickName);
        customer.setMaintenanceTime(new Date());
        // 私海客户,领用人为当前登录人
        customer.setType(0);
        customer.setIsAssigned(0);
        customer.setUsageStatus(1L);
        customer.setUsageUser(loginUserId);
        customerMapper.insert(customer);
        return customer;
    }
 
    /**
     * 导入时获取规格型号,产品大类、规格型号不存在则自动新增
     * <p>
     * 规格型号为空时取产品大类作为规格型号;产品大类不存在时挂到顶级"成品"节点下;
     * 新增规格型号时按"规格型号 + 规格ID + _ + 三位流水号"生成产品编码
     */
    private ProductModel resolveImportProductModel(String productCategory, String specificationModel, String unit,
                                                   Map<String, ProductModel> productModelCache) {
        String category = StringUtils.trim(productCategory);
        if (StringUtils.isEmpty(category)) {
            throw new RuntimeException("产品大类不能为空!");
        }
        // 规格型号为空时取产品大类当产品规格
        String model = StringUtils.trim(specificationModel);
        if (StringUtils.isEmpty(model)) {
            model = category;
        }
        String cacheKey = category + "|" + model;
        ProductModel cachedProductModel = productModelCache.get(cacheKey);
        if (cachedProductModel != null) {
            return cachedProductModel;
        }
        // 产品大类不存在则新增到顶级"成品"节点下
        Product product = productMapper.selectOne(new LambdaQueryWrapper<Product>()
                .eq(Product::getProductName, category)
                .orderByAsc(Product::getId)
                .last("limit 1"));
        if (product == null) {
            product = new Product();
            product.setParentId(getFinishedProductId());
            product.setProductName(category);
            productMapper.insert(product);
        }
        // 规格型号不存在则新增
        ProductModel productModel = productModelMapper.selectOne(new LambdaQueryWrapper<ProductModel>()
                .eq(ProductModel::getProductId, product.getId())
                .eq(ProductModel::getModel, model)
                .orderByAsc(ProductModel::getId)
                .last("limit 1"));
        if (productModel == null) {
            productModel = new ProductModel();
            productModel.setProductId(product.getId());
            productModel.setModel(model);
            productModel.setUnit(StringUtils.isEmpty(unit) ? IMPORT_DEFAULT_VALUE : StringUtils.trim(unit));
            productModelMapper.insert(productModel);
            // 产品编码依赖自增的规格ID,插入后再回填
            productModel.setProductCode(generateProductCode(productModel.getModel(), productModel.getId()));
            productModelMapper.updateById(productModel);
        }
        productModelCache.put(cacheKey, productModel);
        return productModel;
    }
 
    /**
     * 查询顶级"成品"产品节点(产品名称为成品且父ID为空)
     */
    private Long getFinishedProductId() {
        Product finishedProduct = productMapper.selectOne(new LambdaQueryWrapper<Product>()
                .eq(Product::getProductName, FINISHED_PRODUCT_NAME)
                .isNull(Product::getParentId)
                .orderByAsc(Product::getId)
                .last("limit 1"));
        if (finishedProduct == null) {
            throw new RuntimeException("产品档案中不存在顶级节点:" + FINISHED_PRODUCT_NAME + ",无法自动新增产品大类!");
        }
        return finishedProduct.getId();
    }
 
    /**
     * 生成产品编码,规则:规格型号 + 规格ID + _ + 三位流水号,编码已存在时流水号递增
     */
    private String generateProductCode(String model, Long productModelId) {
        String prefix = model + productModelId + "_";
        for (int sequence = 1; sequence < 1000; sequence++) {
            String productCode = prefix + String.format("%03d", sequence);
            Long count = productModelMapper.selectCount(new LambdaQueryWrapper<ProductModel>()
                    .eq(ProductModel::getProductCode, productCode));
            if (count == null || count == 0) {
                return productCode;
            }
        }
        throw new RuntimeException("规格型号:" + model + "的产品编码流水号已超出范围!");
    }
 
    @Override
    public List<LossProductModelDto> getSalesLedgerWithProductsLoss(Long salesLedgerId) {
 
 
        List<LossProductModelDto> lossProductModelDtos = salesLedgerProductMapper.selectProductBomStructure(salesLedgerId);
 
 
        return lossProductModelDtos;
    }
 
    @Override
    public IPage<SalesLedgerDto> listSalesLedger(SalesLedgerDto salesLedgerDto, Page page) {
        IPage<SalesLedgerDto> salesLedgerDtoIPage = salesLedgerMapper.listSalesLedgerAndShipped(page, salesLedgerDto);
        for (SalesLedgerDto salesLedger : salesLedgerDtoIPage.getRecords()) {
            LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
            productWrapper.eq(SalesLedgerProduct::getSalesLedgerId, salesLedger.getId());
            productWrapper.eq(SalesLedgerProduct::getType, 1);
            List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(productWrapper);
            for (SalesLedgerProduct product : products) {
               product.setRegister(SecurityUtils.getLoginUser().getUser().getNickName());
                product.setRegisterDate(LocalDateTime.now());
                // 发货信息
                ShippingInfo shippingInfo = shippingInfoMapper.selectOne(new LambdaQueryWrapper<ShippingInfo>()
                        .eq(ShippingInfo::getSalesLedgerProductId, product.getId())
                        .orderByDesc(ShippingInfo::getCreateTime)
                        .last("limit 1"));
                product.setShippingCarNumber(shippingInfo.getShippingCarNumber());
                product.setShippingDate(shippingInfo.getShippingDate());
                if (shippingInfo != null) {
                    product.setShippingStatus(shippingInfo.getStatus());
                }
            }
            // 过滤只保留发货记录
            products = products.stream().filter(product -> "已发货".equals(product.getShippingStatus())).collect(Collectors.toList());
            if (!products.isEmpty()) {
                salesLedger.setHasChildren(true);
                salesLedger.setProductData(products);
            }
        }
 
 
        return salesLedgerDtoIPage;
    }
 
    /**
     * 下划线命名转驼峰命名
     */
    private String underlineToCamel(String param) {
        if (param == null || "".equals(param.trim())) {
            return "";
        }
        int len = param.length();
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            char c = param.charAt(i);
            if (c == '_') {
                if (++i < len) {
                    sb.append(Character.toUpperCase(param.charAt(i)));
                }
            } else {
                sb.append(Character.toLowerCase(c));
            }
        }
        return sb.toString();
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int deleteSalesLedgerByIds(Long[] ids) {
        List<Long> idList = Arrays.stream(ids)
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
        if (CollectionUtils.isEmpty(idList)) {
            return 0;
        }
        // 删除销售管理数据
        LambdaQueryWrapper<SalesLedgerProduct> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(SalesLedgerProduct::getSalesLedgerId, idList)
                .select(SalesLedgerProduct::getId);
 
        List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(queryWrapper);
        List<Long> productIds = products.stream()
                .map(SalesLedgerProduct::getId)
                .collect(Collectors.toList());
        //删除生产数据
        salesLedgerProductServiceImpl.deleteProductionData(productIds);
 
        // 批量删除产品子表
        if (!productIds.isEmpty()) {
            salesLedgerProductMapper.deleteBatchIds(productIds);
        }
 
        List<Integer> invoiceLedgerIds = new ArrayList<>();
 
        // 删除发货台账记录
        List<ShippingInfo> shippingInfos = shippingInfoMapper.selectList(new LambdaQueryWrapper<ShippingInfo>()
                .in(ShippingInfo::getSalesLedgerId, idList));
        if (CollectionUtils.isNotEmpty(shippingInfos)) {
            shippingInfoServiceImpl.delete(shippingInfos.stream().map(ShippingInfo::getId).collect(Collectors.toList()));
        }
        // 删除附件表
        commonFileService.deleteByBusinessIds(idList, FileNameType.SALE.getValue());
 
        // 删除生产管控数据
        //查询生产报工id
        ArrayList<Long> mainIdList = productionProductMainService.listMain(idList);
        if (CollectionUtils.isNotEmpty(mainIdList)) {
            mainIdList.stream().forEach(mainId -> {
                productionProductMainService.removeProductMain(mainId);
            });
        }
        // 2. 再删除主表数据
        return salesLedgerMapper.deleteBatchIds(idList);
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int addOrUpdateSalesLedger(SalesLedgerDto salesLedgerDto) {
        // 1. 校验客户信息
        Customer customer = customerMapper.selectById(salesLedgerDto.getCustomerId());
        if (customer == null) {
            throw new BaseException("客户不存在");
        }
 
        // 2. DTO转Entity
        SalesLedger salesLedger = convertToEntity(salesLedgerDto);
        salesLedger.setCustomerName(customer.getCustomerName());
        salesLedger.setTenantId(customer.getTenantId());
        // 3. 新增或更新主表
        if (salesLedger.getId() == null) {
            String contractNo = salesLedger.getSalesContractNo();
            if (StringUtils.isEmpty(contractNo)) {
                contractNo = generateSalesContractNo(salesLedgerDto.getEntryDate());
            }
            salesLedger.setSalesContractNo(contractNo);
            salesLedger.setApprovalStatus(0);
            salesLedgerMapper.insert(salesLedger);
 
            // 新增时发起协同审批
            submitApproval(salesLedger);
        } else {
            salesLedgerMapper.updateById(salesLedger);
        }
 
 
        // 4. 处理子表数据
        List<SalesLedgerProduct> productList = salesLedgerDto.getProductData();
        if (productList != null && !productList.isEmpty()) {
            handleSalesLedgerProducts(salesLedger.getId(), productList, EnumUtil.fromCode(SaleEnum.class, salesLedgerDto.getType()));
            updateMainContractAmount(
                    salesLedger.getId(),
                    productList,
                    SalesLedgerProduct::getTaxInclusiveTotalPrice,
                    salesLedgerMapper,
                    SalesLedger.class
            );
        }
 
        // 5. 保存销售台账附件
        fileUtil.saveStorageAttachment(ApplicationTypeEnum.FILE, RecordTypeEnum.SALES_LEDGER, salesLedger.getId(), salesLedgerDto.getStorageBlobDTOs());
 
        return 1;
    }
 
    @Override
    public void handleSalesLedgerProducts(Long salesLedgerId, List<SalesLedgerProduct> products, SaleEnum type) {
        // 按ID分组,区分新增和更新的记录
        Map<Boolean, List<SalesLedgerProduct>> partitionedProducts = products.stream()
                .peek(p -> p.setSalesLedgerId(salesLedgerId))
                .collect(Collectors.partitioningBy(p -> p.getId() != null));
 
        List<SalesLedgerProduct> updateList = partitionedProducts.get(true);
        List<SalesLedgerProduct> insertList = partitionedProducts.get(false);
 
        // 执行更新操作
        if (!updateList.isEmpty()) {
            for (SalesLedgerProduct product : updateList) {
                product.setType(type.getCode());
                salesLedgerProductMapper.updateById(product);
            }
        }
        // 执行插入操作
        if (!insertList.isEmpty()) {
            for (SalesLedgerProduct salesLedgerProduct : insertList) {
                salesLedgerProduct.setType(type.getCode());
                salesLedgerProductMapper.insert(salesLedgerProduct);
            }
        }
    }
 
    private SalesLedger convertToEntity(SalesLedgerDto dto) {
        SalesLedger entity = new SalesLedger();
        BeanUtils.copyProperties(dto, entity);
        return entity;
    }
 
    @Transactional(readOnly = true)
    public String generateSalesContractNo(Date entryDate) {
        LocalDate currentDate = entryDate != null ? DateUtils.toLocalDate(entryDate) : LocalDate.now();
        String datePart = currentDate.format(DateTimeFormatter.BASIC_ISO_DATE);
        String lockKey = LOCK_PREFIX + datePart;
        String lockValue = Thread.currentThread().getId() + "-" + System.nanoTime(); // 唯一标识锁持有者
 
        try {
            // 1. 尝试获取分布式锁(循环直到超时)
            long startWaitTime = System.currentTimeMillis();
            while (System.currentTimeMillis() - startWaitTime < LOCK_WAIT_TIMEOUT * 1000) {
                // SET key value NX PX 30000:仅当锁不存在时获取,设置30秒过期
                Boolean locked = redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, LOCK_EXPIRE_TIME, TimeUnit.SECONDS);
                if (Boolean.TRUE.equals(locked)) {
                    break; // 成功获取锁
                }
                // 短暂休眠避免忙等待
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    throw new RuntimeException("获取锁时被中断", e);
                }
            }
 
            if (!redisTemplate.hasKey(lockKey)) {
                throw new RuntimeException("获取合同编号生成锁失败:超时");
            }
 
            // 2. 查询当天/公司已存在的序列号(与原逻辑一致)
            Long tenantId = SecurityUtils.getLoginUser().getTenantId();
            if (null != tenantId) {
                //获取公司编号
                SysDept sysDept = sysDeptMapper.selectDeptById(tenantId.longValue());
                if (!ObjectUtils.isEmpty(sysDept)) {
                    datePart = (StringUtils.isEmpty(sysDept.getDeptNick()) ? "" : sysDept.getDeptNick()) + datePart;
                }
            }
            List<Integer> existingSequences = salesLedgerMapper.selectSequencesByDate(datePart);
            int nextSequence = findFirstMissingSequence(existingSequences);
 
            return datePart + String.format("%03d", nextSequence);
        } finally {
            // 3. 释放锁
            String luaScript = "if redis.call('GET', KEYS[1]) == ARGV[1] then return redis.call('DEL', KEYS[1]) else return 0 end";
            redisTemplate.execute(
                    new DefaultRedisScript<>(luaScript, Long.class),
                    Collections.singletonList(lockKey),
                    lockValue
            );
        }
    }
 
    private int findFirstMissingSequence(List<Integer> sequences) {
        if (sequences.isEmpty()) {
            return 1;
        }
        // 排序后查找第一个缺失的正整数
        sequences.sort(Integer::compareTo);
        int next = 1;
        for (int seq : sequences) {
            if (seq == next) {
                next++;
            } else if (seq > next) {
                break;
            }
        }
        return next;
    }
 
    public <T, S> void updateMainContractAmount(
            Long mainId,
            List<T> subList,
            Function<T, BigDecimal> amountGetter,
            BaseMapper<S> mainMapper,
            Class<S> mainEntityClass) {
 
        if (mainId == null || subList == null || subList.isEmpty()) {
            return;
        }
 
        // 计算子表金额总和
        BigDecimal totalAmount = subList.stream()
                .map(amountGetter)
                .filter(Objects::nonNull)
                .reduce(BigDecimal.ZERO, BigDecimal::add);
 
        // 构造主表更新对象
        try {
            S entity = mainEntityClass.getDeclaredConstructor().newInstance();
            Field idField = mainEntityClass.getDeclaredField("id");
            idField.setAccessible(true);
            idField.set(entity, mainId);
 
            Field amountField = mainEntityClass.getDeclaredField("contractAmount");
            amountField.setAccessible(true);
            amountField.set(entity, totalAmount);
 
            mainMapper.updateById(entity);
        } catch (Exception e) {
            throw new RuntimeException("动态更新主表金额失败", e);
        }
    }
 
    // 内部类用于存储聚合结果
    private static class GroupedCustomer {
        private final Long customerId;
        private final String customerName;
        private BigDecimal totalAmount = BigDecimal.ZERO;
 
        public GroupedCustomer(Long customerId, String customerName) {
            this.customerId = customerId;
            this.customerName = customerName;
        }
 
        public void addAmount(BigDecimal amount) {
            if (amount != null) {
                this.totalAmount = this.totalAmount.add(amount);
            }
        }
 
        public Long getCustomerId() {
            return customerId;
        }
 
        public String getCustomerName() {
            return customerName;
        }
 
        public BigDecimal getTotalAmount() {
            return totalAmount;
        }
    }
 
    /**
     * 新增销售台账时发起协同审批
     */
    private void submitApproval(SalesLedger salesLedger) {
        LoginUser loginUser = SecurityUtils.getLoginUser();
        ApprovalTemplate template = approvalTemplateService.getOne(
                new LambdaQueryWrapper<ApprovalTemplate>()
                        .eq(ApprovalTemplate::getBusinessType, TypeEnums.SALES_LEDGER_APPROVAL.getCode())
                        .eq(ApprovalTemplate::getDeleted, 0)
                        .orderByDesc(ApprovalTemplate::getId)
                        .last("limit 1")
        );
        if (template == null) {
            log.warn("销售审批模板不存在,跳过发起审批");
            return;
        }
        ApprovalInstanceDto instanceDto = new ApprovalInstanceDto();
        instanceDto.setTemplateId(template.getId());
        instanceDto.setTemplateName(template.getTemplateName());
        instanceDto.setBusinessId(salesLedger.getId());
        instanceDto.setBusinessType(TypeEnums.SALES_LEDGER_APPROVAL.getCode());
        instanceDto.setCurrentLevel(1);
        instanceDto.setTitle(salesLedger.getSalesContractNo() + "销售审批");
        instanceDto.setApplicantId(loginUser.getUserId());
        instanceDto.setApplicantName(loginUser.getNickName());
        instanceDto.setApplyTime(LocalDateTime.now());
        approvalInstanceService.add(instanceDto);
    }
}