package com.ruoyi.purchase.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
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.service.impl.ServiceImpl;
import com.ruoyi.approve.bean.vo.ApproveProcessVO;
import com.ruoyi.approve.pojo.ApproveProcess;
import com.ruoyi.approve.service.impl.ApproveProcessServiceImpl;
import com.ruoyi.basic.enums.ApplicationTypeEnum;
import com.ruoyi.basic.enums.RecordTypeEnum;
import com.ruoyi.basic.mapper.ProductMapper;
import com.ruoyi.basic.mapper.ProductModelMapper;
import com.ruoyi.basic.mapper.SupplierManageMapper;
import com.ruoyi.basic.pojo.Product;
import com.ruoyi.basic.pojo.ProductModel;
import com.ruoyi.basic.pojo.SupplierManage;
import com.ruoyi.basic.utils.FileUtil;
import com.ruoyi.common.enums.FileNameType;
import com.ruoyi.common.exception.base.BaseException;
import com.ruoyi.common.utils.AmountUtils;
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.procurementrecord.mapper.ProcurementRecordMapper;
import com.ruoyi.procurementrecord.pojo.ProcurementRecordStorage;
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.PurchaseLedgerDto;
import com.ruoyi.purchase.dto.PurchaseLedgerImportDto;
import com.ruoyi.purchase.dto.PurchaseLedgerProductImportDto;
import com.ruoyi.purchase.mapper.PurchaseLedgerMapper;
import com.ruoyi.purchase.pojo.PurchaseLedger;
import com.ruoyi.purchase.service.IPurchaseLedgerService;
import com.ruoyi.quality.mapper.QualityInspectMapper;
import com.ruoyi.quality.mapper.QualityInspectParamMapper;
import com.ruoyi.quality.mapper.QualityTestStandardMapper;
import com.ruoyi.quality.mapper.QualityTestStandardParamMapper;
import com.ruoyi.quality.pojo.QualityInspect;
import com.ruoyi.quality.pojo.QualityInspectParam;
import com.ruoyi.quality.pojo.QualityTestStandard;
import com.ruoyi.quality.pojo.QualityTestStandardParam;
import com.ruoyi.sales.mapper.CommonFileMapper;
import com.ruoyi.sales.mapper.SalesLedgerMapper;
import com.ruoyi.sales.mapper.SalesLedgerProductMapper;
import com.ruoyi.sales.pojo.CommonFile;
import com.ruoyi.sales.pojo.SalesLedger;
import com.ruoyi.sales.pojo.SalesLedgerProduct;
import com.ruoyi.sales.service.impl.CommonFileServiceImpl;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;
import java.math.BigDecimal;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 采购台账Service业务层处理
 *
 * @author ruoyi
 * @date 2025-05-09
 */
@Service
@Slf4j
@RequiredArgsConstructor
public class PurchaseLedgerServiceImpl extends ServiceImpl<PurchaseLedgerMapper, PurchaseLedger> implements IPurchaseLedgerService {

    private static final Long IMPORT_PRODUCT_PARENT_ID = 3L;

    private final PurchaseLedgerMapper purchaseLedgerMapper;
    private final SalesLedgerMapper salesLedgerMapper;
    private final SalesLedgerProductMapper salesLedgerProductMapper;
    private final SysUserMapper userMapper;
    private final TempFileMapper tempFileMapper;
    private final CommonFileMapper commonFileMapper;
    private final SysDeptMapper sysDeptMapper;
    private final SupplierManageMapper supplierManageMapper;
    private final ProductMapper productMapper;
    private final ProductModelMapper productModelMapper;
    private final SysUserMapper sysUserMapper;
    private final StringRedisTemplate redisTemplate;
    private final QualityInspectMapper qualityInspectMapper;
    private final CommonFileServiceImpl commonFileService;
    private final QualityTestStandardParamMapper qualityTestStandardParamMapper;
    private final QualityTestStandardMapper qualityTestStandardMapper;
    private final QualityInspectParamMapper qualityInspectParamMapper;
    private final ApproveProcessServiceImpl approveProcessService;
    private final ProcurementRecordMapper procurementRecordStorageMapper;
    private final FileUtil fileUtil;

    @Override
    public List<PurchaseLedger> selectPurchaseLedgerList(PurchaseLedger purchaseLedger) {
        LambdaQueryWrapper<PurchaseLedger> queryWrapper = new LambdaQueryWrapper<>();
        if (StringUtils.isNotBlank(purchaseLedger.getPurchaseContractNumber())) {
            queryWrapper.like(PurchaseLedger::getPurchaseContractNumber, purchaseLedger.getPurchaseContractNumber());
        }
        if(purchaseLedger.getSupplierId()!=null){
            queryWrapper.eq(PurchaseLedger::getSupplierId, purchaseLedger.getSupplierId());
        }
        if (purchaseLedger.getApprovalStatus() != null) {
            queryWrapper.eq(PurchaseLedger::getApprovalStatus, purchaseLedger.getApprovalStatus());
        }
        return purchaseLedgerMapper.selectList(queryWrapper);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public int addOrEditPurchase(PurchaseLedgerDto purchaseLedgerDto) throws Exception {
        PurchaseLedger purchaseLedger = new PurchaseLedger();
        // DTO转Entity
        BeanUtils.copyProperties(purchaseLedgerDto, purchaseLedger);
        AmountUtils.normalizeContractAmount(purchaseLedger);
        SalesLedger salesLedger = salesLedgerMapper.selectById(purchaseLedgerDto.getSalesLedgerId());
        //录入人
        SysUser sysUser = userMapper.selectUserById(purchaseLedgerDto.getRecorderId());
        if (ObjectUtils.isNotEmpty(sysUser)) {
            purchaseLedger.setRecorderName(sysUser.getNickName());
            purchaseLedger.setPhoneNumber(sysUser.getPhonenumber());
        }else {
            purchaseLedger.setRecorderName(SecurityUtils.getLoginUser().getNickName());
            SysUser sysUser1 = userMapper.selectUserById(SecurityUtils.getUserId());
            purchaseLedger.setPhoneNumber(sysUser1.getPhonenumber());
        }

        SupplierManage supplierManage = supplierManageMapper.selectById(purchaseLedgerDto.getSupplierId());

        LoginUser loginUser = SecurityUtils.getLoginUser();
        if (ObjectUtils.isNotEmpty(loginUser) && null != loginUser.getTenantId()) {
            purchaseLedger.setTenantId(loginUser.getTenantId());
        }
        purchaseLedger.setSalesContractNo(ObjectUtils.isNotEmpty(salesLedger) ? salesLedger.getSalesContractNo() : "");
        purchaseLedger.setSalesLedgerId(ObjectUtils.isNotEmpty(salesLedger) ? salesLedger.getId() : -1);
        purchaseLedger.setSupplierName(supplierManage.getSupplierName());
        purchaseLedger.setRecorderId(purchaseLedgerDto.getRecorderId());

        purchaseLedger.setApprovalStatus(1);
        // 3. 新增或更新主表
        if (purchaseLedger.getId() == null) {
            purchaseLedgerMapper.insert(purchaseLedger);
        } else {
            // 删除采购审核，重新提交
            ApproveProcess one = approveProcessService.getOne(new LambdaQueryWrapper<ApproveProcess>()
                    .eq(ApproveProcess::getApproveType, 5)
                    .eq(ApproveProcess::getApproveReason, purchaseLedger.getPurchaseContractNumber())
                    .eq(ApproveProcess::getApproveDelete, 0)
                    .last("limit 1"));
            if (one != null) {
                approveProcessService.delByIds(Collections.singletonList(one.getId()));
            }
            purchaseLedgerMapper.updateById(purchaseLedger);
        }

        // 4. 处理子表数据
        List<SalesLedgerProduct> productList = purchaseLedgerDto.getProductData();
        if (productList != null && !productList.isEmpty()) {
            handleSalesLedgerProducts(purchaseLedger.getId(), productList, purchaseLedgerDto.getType());
        }
        // 6.采购审核新增；审批管理未配置采购审批人时，审批服务会自动置为审批通过。
        addApproveByPurchase(loginUser, purchaseLedger);
        // 5. 迁移临时文件到正式目录
        fileUtil.saveStorageAttachment(ApplicationTypeEnum.FILE, RecordTypeEnum.PURCHASE_LEDGER, purchaseLedger.getId(), purchaseLedgerDto.getStorageBlobDTOS());
        return 1;
    }


    public void addQualityInspect(PurchaseLedger purchaseLedger, SalesLedgerProduct saleProduct) {
        QualityInspect qualityInspect = new QualityInspect();
        qualityInspect.setInspectType(0);
        qualityInspect.setSupplier(purchaseLedger.getSupplierName());
        qualityInspect.setPurchaseLedgerId(purchaseLedger.getId());
        qualityInspect.setProductId(saleProduct.getProductId());
        qualityInspect.setProductName(saleProduct.getProductCategory());
        qualityInspect.setModel(saleProduct.getSpecificationModel());
        qualityInspect.setProductModelId(saleProduct.getProductModelId());
        qualityInspect.setUnit(saleProduct.getUnit());
        qualityInspect.setQuantity(saleProduct.getQuantity());
        qualityInspectMapper.insert(qualityInspect);
        List<QualityTestStandard> qualityTestStandard = qualityTestStandardMapper.getQualityTestStandardByProductId(saleProduct.getProductId(), 0,null);
        if (qualityTestStandard.size()>0){
            qualityInspect.setTestStandardId(qualityTestStandard.get(0).getId());
            qualityInspectMapper.updateById(qualityInspect);
            qualityTestStandardParamMapper.selectList(Wrappers.<QualityTestStandardParam>lambdaQuery()
                    .eq(QualityTestStandardParam::getTestStandardId,qualityTestStandard.get(0).getId()))
                    .forEach(qualityTestStandardParam -> {
                        QualityInspectParam param = new QualityInspectParam();
                        com.ruoyi.common.utils.bean.BeanUtils.copyProperties(qualityTestStandardParam, param);
                        param.setId(null);
                        param.setInspectId(qualityInspect.getId());
                        qualityInspectParamMapper.insert(param);
                    });
        }
    }

    private void handleSalesLedgerProducts(Long salesLedgerId, List<SalesLedgerProduct> products, Integer type) {
        if (products == null || products.isEmpty()) {
            throw new BaseException("产品信息不存在");
        }
        Integer ledgerType = type == null ? 2 : type;

        // 提前收集所有需要查询的ID
        Set<Long> productIds = products.stream()
                .map(SalesLedgerProduct::getProductId)
                .filter(Objects::nonNull)
                .collect(Collectors.toSet());

        Set<Long> modelIds = products.stream()
                .map(SalesLedgerProduct::getProductModelId)
                .filter(Objects::nonNull)
                .collect(Collectors.toSet());

        // 一次性查询产品和型号信息
        Map<Long, String> productMap = new HashMap<>();
        if (!productIds.isEmpty()) {
            List<Product> productList = productMapper.selectBatchIds(productIds);
            productList.forEach(p -> productMap.put(p.getId(), p.getProductName()));
        }

        Map<Long, String> modelMap = new HashMap<>();
        if (!modelIds.isEmpty()) {
            List<ProductModel> modelList = productModelMapper.selectBatchIds(modelIds);
            modelList.forEach(m -> modelMap.put(m.getId(), m.getModel()));
        }

        // 设置字段
        for (SalesLedgerProduct product : products) {
            AmountUtils.normalizeSalesLedgerProduct(product);
            product.setSalesLedgerId(salesLedgerId);

            Long productId = product.getProductId();
            if (productId != null && productMap.containsKey(productId)) {
                product.setProductCategory(productMap.get(productId));
            }

            Long productModelId = product.getProductModelId();
            if (productModelId != null && modelMap.containsKey(productModelId)) {
                product.setSpecificationModel(modelMap.get(productModelId));
            }
        }

        // 分组处理
        Map<Boolean, List<SalesLedgerProduct>> partitionedProducts = products.stream()
                .collect(Collectors.partitioningBy(p -> p.getId() != null));

        List<SalesLedgerProduct> updateList = partitionedProducts.get(true);
        List<SalesLedgerProduct> insertList = partitionedProducts.get(false);
        PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(salesLedgerId);

        // 执行更新操作
        if (!updateList.isEmpty()) {
            for (SalesLedgerProduct product : updateList) {
                product.setType(ledgerType);
                salesLedgerProductMapper.updateById(product);
            }
        }
        // 执行插入操作
        if (!insertList.isEmpty()) {
            for (SalesLedgerProduct salesLedgerProduct : insertList) {
                salesLedgerProduct.setType(ledgerType);
                Date entryDate = purchaseLedger.getEntryDate();

                LocalDateTime localDateTime = entryDate.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
                salesLedgerProduct.setRegisterDate(localDateTime);
                salesLedgerProductMapper.insert(salesLedgerProduct);
            }
        }

        // 计算总含税金额
        BigDecimal totalTaxInclusiveAmount = AmountUtils.scaleAmount(products.stream()
                .map(SalesLedgerProduct::getTaxInclusiveTotalPrice)
                .filter(Objects::nonNull)
                .reduce(BigDecimal.ZERO, BigDecimal::add));

        // 更新主表的总金额字段
        if (salesLedgerId != null) {
            // 直接更新指定ID的记录的contractAmount字段为totalTaxInclusiveAmount
            purchaseLedgerMapper.updateContractAmountById(salesLedgerId, totalTaxInclusiveAmount);
        }
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public int deletePurchaseLedgerByIds(Long[] ids) {
        if (ids == null || ids.length == 0) {
           throw new BaseException("请选中至少一条数据");
        }
        for (Long id : ids) {
            PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(id);
            if (purchaseLedger.getApprovalStatus().equals(3)) {
                throw new BaseException(purchaseLedger.getPurchaseContractNumber()+"已经审批通过，不允许删除");
            }
        }
        // 批量删除关联的采购入库记录
        LambdaQueryWrapper<SalesLedgerProduct> salesLedgerProductQueryWrapper = new LambdaQueryWrapper<>();
        salesLedgerProductQueryWrapper.in(SalesLedgerProduct::getSalesLedgerId, ids)
                .eq(SalesLedgerProduct::getType, 2);
        List<SalesLedgerProduct> salesLedgerProducts = salesLedgerProductMapper.selectList(salesLedgerProductQueryWrapper);
        if (CollectionUtils.isNotEmpty(salesLedgerProducts)) {
            salesLedgerProducts.stream().forEach(salesLedgerProduct -> {
                // 批量删除关联的采购台账产品
                LambdaQueryWrapper<ProcurementRecordStorage> queryWrapper = new LambdaQueryWrapper<>();
                queryWrapper.eq(ProcurementRecordStorage::getSalesLedgerProductId, salesLedgerProduct.getId());
                procurementRecordStorageMapper.delete(queryWrapper);
            });
        }
        // 批量删除关联的采购台账产品
        LambdaQueryWrapper<SalesLedgerProduct> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(SalesLedgerProduct::getSalesLedgerId, ids)
                .eq(SalesLedgerProduct::getType, 2);
        salesLedgerProductMapper.delete(queryWrapper);
        //批量删除检验标准
        LambdaQueryWrapper<QualityInspect> materialInspectLambdaQueryWrapper = new LambdaQueryWrapper<>();
        materialInspectLambdaQueryWrapper.in(QualityInspect::getPurchaseLedgerId, ids);

        List<QualityInspect> qualityInspects = qualityInspectMapper.selectList(materialInspectLambdaQueryWrapper);
        qualityInspects.stream().forEach(qualityInspect -> {
            if (ObjectUtils.isNotEmpty(qualityInspect.getInspectState())&&qualityInspect.getInspectState().equals(1)) {
                throw new BaseException("已提交的检验单不能删除");
            }
        });
        List<Long> inspectIds = qualityInspects.stream()
                .map(QualityInspect::getId)
                .collect(Collectors.toList());

        if (inspectIds.size() > 0) {
            LambdaQueryWrapper<QualityInspectParam> qualityStandardLambdaQueryWrapper = new LambdaQueryWrapper<>();
            qualityStandardLambdaQueryWrapper.in(QualityInspectParam::getInspectId, inspectIds);
            qualityInspectParamMapper.delete(qualityStandardLambdaQueryWrapper);
        }
        // 删除采购审批记录
        for (Long id : ids) {
            PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(id);
            if(purchaseLedger != null){
                ApproveProcess one = approveProcessService.getOne(new LambdaQueryWrapper<ApproveProcess>()
                        .eq(ApproveProcess::getApproveType, 5)
                        .eq(ApproveProcess::getApproveDelete, 0)
                        .eq(ApproveProcess::getApproveReason, purchaseLedger.getPurchaseContractNumber())
                        .last("limit 1"));
                if (one != null) {
                    approveProcessService.delByIds(Collections.singletonList(one.getId()));
                }
            }
        }
        //批量删除原材料检验数据
        qualityInspectMapper.delete(materialInspectLambdaQueryWrapper);
        //删除附件
        commonFileService.deleteByBusinessIds(Arrays.asList(ids), 2);
        // 批量删除采购台账
        return purchaseLedgerMapper.deleteBatchIds(Arrays.asList(ids));
    }

    @Override
    public PurchaseLedgerDto getPurchaseById(PurchaseLedgerDto purchaseLedgerDto) {
        // 1. 查询主表
        PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(purchaseLedgerDto.getId());
        if (purchaseLedger == null) {
            throw new BaseException("采购台账不存在");
        }

        // 2. 查询子表
        LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
        productWrapper.eq(SalesLedgerProduct::getSalesLedgerId, purchaseLedger.getId())
                .eq(SalesLedgerProduct::getType, purchaseLedgerDto.getType());
        List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(productWrapper);


        // 4. 转换 DTO
        PurchaseLedgerDto resultDto = new PurchaseLedgerDto();
        BeanUtils.copyProperties(purchaseLedger, resultDto);
        AmountUtils.normalizeContractAmount(resultDto);
        if (!products.isEmpty()) {
            AmountUtils.normalizeSalesLedgerProducts(products);
            resultDto.setHasChildren(true);
            resultDto.setProductData(products);
            resultDto.setStorageBlobVOS(fileUtil.getStorageBlobVOsByApplicationAndRecordTypeAndRecordId(ApplicationTypeEnum.FILE, RecordTypeEnum.PURCHASE_LEDGER, purchaseLedger.getId()));
        }
        return resultDto;
    }

    @Override
    public List getProduct(PurchaseLedgerDto purchaseLedgerDto) {
        LambdaQueryWrapper<PurchaseLedger> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.select(PurchaseLedger::getId, PurchaseLedger::getPurchaseContractNumber);

        // 获取原始查询结果
        List<Map<String, Object>> result = purchaseLedgerMapper.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 PurchaseLedgerDto getInfo(PurchaseLedgerDto purchaseLedgerDto) {
        PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(purchaseLedgerDto.getId());
        if (purchaseLedger == null) {
            throw new BaseException("采购台账不存在");
        }
        // 创建并填充DTO
        PurchaseLedgerDto resultDto = new PurchaseLedgerDto();
        resultDto.setSalesLedgerId(purchaseLedger.getSalesLedgerId());
        resultDto.setSalesContractNoId(purchaseLedger.getSalesLedgerId());
        resultDto.setSalesContractNo(purchaseLedger.getSalesContractNo());
        resultDto.setSupplierName(purchaseLedger.getSupplierName());
        resultDto.setProjectName(purchaseLedger.getProjectName());

        // 查询并设置关联产品
        LambdaQueryWrapper<SalesLedgerProduct> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SalesLedgerProduct::getSalesLedgerId, purchaseLedger.getId())
                .eq(SalesLedgerProduct::getType, 2);
        List<SalesLedgerProduct> productList = salesLedgerProductMapper.selectList(queryWrapper);
        AmountUtils.normalizeSalesLedgerProducts(productList);
        resultDto.setProductData(productList);
        return resultDto;
    }

    @Override
    public List getPurchasesNo() {
        LambdaQueryWrapper<PurchaseLedger> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.select(PurchaseLedger::getId, PurchaseLedger::getPurchaseContractNumber, PurchaseLedger::getSupplierId);

        // 获取原始查询结果
        List<Map<String, Object>> result = purchaseLedgerMapper.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 PurchaseLedgerDto getPurchaseNoById(Long id) {
        PurchaseLedgerDto purchaseLedgerDto = new PurchaseLedgerDto();
        PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectById(id);

        BeanUtils.copyProperties(purchaseLedger, purchaseLedgerDto);
        return purchaseLedgerDto;
    }

    @Override
    public IPage<PurchaseLedgerDto> selectPurchaseLedgerListPage(IPage ipage, PurchaseLedgerDto purchaseLedger) {
        IPage<PurchaseLedgerDto> page = purchaseLedgerMapper.selectPurchaseLedgerListPage(ipage, purchaseLedger);
        if (!CollectionUtils.isEmpty(page.getRecords())) {
            page.getRecords().forEach(record -> {
                AmountUtils.normalizeContractAmount(record);
                AmountUtils.normalizeSalesLedgerProducts(record.getProductData());
            });
        }
        return page;
    }

    @Override
    public String getPurchaseNo() {
        // 生成日期前缀（例如：CG20250405）
        String purchaseNo = "CG" + LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));

        // 构建 Redis Key（按天分隔）
        String redisKey = "purchase_no:" + LocalDate.now().format(DateTimeFormatter.ISO_LOCAL_DATE);

        // 获取当前序号并递增（原子操作）
        Long sequence = redisTemplate.opsForValue().increment(redisKey);

        // 设置过期时间（次日失效，防止冗余数据）
        if (sequence == 1) {
            redisTemplate.expire(redisKey, 1, TimeUnit.DAYS);
        }

        // 返回完整编号（如 CG202504050001）
        return purchaseNo + String.format("%03d", sequence);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public AjaxResult importData(MultipartFile file) {
        LoginUser loginUser = SecurityUtils.getLoginUser();
        try (InputStream inputStream = file.getInputStream()) {
            ExcelUtil<PurchaseLedgerImportDto> excelUtil = new ExcelUtil<>(PurchaseLedgerImportDto.class);
            Map<String, List<PurchaseLedgerImportDto>> sheetData = excelUtil.importExcelMultiSheet(
                    Arrays.asList("采购台账数据", "采购产品数据"), inputStream, 0);
            if (CollectionUtils.isEmpty(sheetData)) {
                return AjaxResult.error("采购表格为空！");
            }

            List<PurchaseLedgerImportDto> purchaseImports = sheetData.get("采购台账数据");
            if (CollectionUtils.isEmpty(purchaseImports)) {
                return AjaxResult.error("采购台账数据为空！");
            }
            List<PurchaseLedgerImportDto> productImports = sheetData.get("采购产品数据");
            if (CollectionUtils.isEmpty(productImports)) {
                return AjaxResult.error("采购产品数据为空！");
            }

            List<String> supplierNames = purchaseImports.stream()
                    .map(PurchaseLedgerImportDto::getSupplierName)
                    .filter(StringUtils::hasText)
                    .map(StringUtils::trim)
                    .distinct()
                    .collect(Collectors.toList());
            Map<String, SupplierManage> supplierMap = CollectionUtils.isEmpty(supplierNames)
                    ? Collections.emptyMap()
                    : supplierManageMapper.selectList(new LambdaQueryWrapper<SupplierManage>()
                            .in(SupplierManage::getSupplierName, supplierNames))
                    .stream()
                    .collect(Collectors.toMap(
                            supplier -> StringUtils.trim(supplier.getSupplierName()),
                            supplier -> supplier,
                            (first, ignored) -> first));

            List<String> recorderNames = purchaseImports.stream()
                    .map(PurchaseLedgerImportDto::getRecorderName)
                    .filter(StringUtils::hasText)
                    .map(StringUtils::trim)
                    .distinct()
                    .collect(Collectors.toList());
            Map<String, SysUser> recorderMap = CollectionUtils.isEmpty(recorderNames)
                    ? Collections.emptyMap()
                    : sysUserMapper.selectList(new LambdaQueryWrapper<SysUser>()
                            .in(SysUser::getNickName, recorderNames))
                    .stream()
                    .collect(Collectors.toMap(
                            user -> StringUtils.trim(user.getNickName()),
                            user -> user,
                            (first, ignored) -> first));

            Map<String, ProductModel> importedProductModelCache = new HashMap<>();
            int addedCount = 0;
            int overwrittenCount = 0;
            int skippedCount = 0;

            for (PurchaseLedgerImportDto purchaseImport : purchaseImports) {
                String purchaseContractNumber = requireImportText(
                        purchaseImport.getPurchaseContractNumber(), "采购单号不能为空！");
                purchaseImport.setPurchaseContractNumber(purchaseContractNumber);
                purchaseImport.setSupplierName(StringUtils.trim(purchaseImport.getSupplierName()));
                purchaseImport.setProjectName(StringUtils.trim(purchaseImport.getProjectName()));
                purchaseImport.setRecorderName(StringUtils.trim(purchaseImport.getRecorderName()));

                List<PurchaseLedgerProductImportDto> purchaseProducts = productImports.stream()
                        .filter(productImport -> sameImportText(
                                productImport.getPurchaseContractNumber(), purchaseContractNumber))
                        .map(productImport -> (PurchaseLedgerProductImportDto) productImport)
                        .collect(Collectors.toList());
                if (CollectionUtils.isEmpty(purchaseProducts)) {
                    throw new BaseException("采购单号:" + purchaseContractNumber + ",无对应产品数据！");
                }

                List<PurchaseLedger> existingLedgers = purchaseLedgerMapper.selectList(
                        new LambdaQueryWrapper<PurchaseLedger>()
                                .eq(PurchaseLedger::getPurchaseContractNumber, purchaseContractNumber));
                PurchaseLedger ledgerToOverwrite = existingLedgers.stream()
                        .filter(existing -> Objects.equals(existing.getApprovalStatus(), 1))
                        .filter(existing -> isSameImportedPurchase(existing, purchaseImport))
                        .findFirst()
                        .orElse(null);
                if (ledgerToOverwrite == null && CollectionUtils.isNotEmpty(existingLedgers)) {
                    skippedCount++;
                    continue;
                }

                PurchaseLedger purchaseLedger = buildImportedPurchaseLedger(
                        purchaseImport, purchaseProducts, supplierMap, recorderMap);
                boolean overwrite = ledgerToOverwrite != null;
                if (overwrite) {
                    purchaseLedger.setId(ledgerToOverwrite.getId());
                    purchaseLedger.setApprovalStatus(1);
                    updateImportedPurchaseLedger(purchaseLedger);
                    clearImportedPurchaseContents(purchaseLedger.getId(), purchaseContractNumber);
                    overwrittenCount++;
                } else {
                    purchaseLedger.setApprovalStatus(1);
                    purchaseLedgerMapper.insert(purchaseLedger);
                    addedCount++;
                }

                for (PurchaseLedgerProductImportDto productImport : purchaseProducts) {
                    ProductModel productModel = findOrCreateImportedProductModel(
                            productImport, importedProductModelCache);
                    SalesLedgerProduct purchaseProduct = new SalesLedgerProduct();
                    BeanUtils.copyProperties(productImport, purchaseProduct);
                    purchaseProduct.setSalesLedgerId(purchaseLedger.getId());
                    purchaseProduct.setType(2);
                    purchaseProduct.setProductId(productModel.getProductId());
                    purchaseProduct.setProductModelId(productModel.getId());
                    AmountUtils.normalizeSalesLedgerProduct(purchaseProduct);
                    purchaseProduct.setTaxExclusiveTotalPrice(
                            AmountUtils.calcTaxExclusiveTotalPrice(
                                    purchaseProduct.getTaxInclusiveTotalPrice(),
                                    purchaseProduct.getTaxRate()));
                    purchaseProduct.setRegister(loginUser.getNickName());
                    purchaseProduct.setRegisterDate(LocalDateTime.now());
                    purchaseProduct.setApproveStatus(0);
                    purchaseProduct.setIsChecked(Objects.equals(productImport.getIsChecked(), 1));
                    salesLedgerProductMapper.insert(purchaseProduct);
                    if (Boolean.TRUE.equals(purchaseProduct.getIsChecked())) {
                        addQualityInspect(purchaseLedger, purchaseProduct);
                    }
                }

                if (!overwrite) {
                    addApproveByPurchase(loginUser, purchaseLedger);
                }
            }

            return AjaxResult.success(String.format(
                    "导入成功：新增%d条，覆盖%d条，跳过%d条", addedCount, overwrittenCount, skippedCount));
        } catch (BaseException e) {
            log.error("导入采购台账失败：{}", e.getMessage(), e);
            throw e;
        } catch (Exception e) {
            log.error("导入采购台账失败", e);
            throw new BaseException("导入失败：" + e.getMessage());
        }
    }

    private PurchaseLedger buildImportedPurchaseLedger(
            PurchaseLedgerImportDto purchaseImport,
            List<PurchaseLedgerProductImportDto> purchaseProducts,
            Map<String, SupplierManage> supplierMap,
            Map<String, SysUser> recorderMap) {
        PurchaseLedger purchaseLedger = new PurchaseLedger();
        BeanUtils.copyProperties(purchaseImport, purchaseLedger);

        SupplierManage supplier = supplierMap.get(purchaseLedger.getSupplierName());
        purchaseLedger.setSupplierId(supplier == null ? null : supplier.getId());

        SysUser recorder = recorderMap.get(purchaseLedger.getRecorderName());
        if (recorder == null) {
            throw new BaseException("录入人:" + purchaseLedger.getRecorderName() + ",无对应用户！");
        }
        purchaseLedger.setRecorderId(recorder.getUserId());
        purchaseLedger.setContractAmount(purchaseProducts.stream()
                .map(PurchaseLedgerProductImportDto::getTaxInclusiveTotalPrice)
                .filter(Objects::nonNull)
                .reduce(BigDecimal.ZERO, BigDecimal::add));

        if (StringUtils.hasText(purchaseLedger.getSalesContractNo())) {
            SalesLedger salesLedger = salesLedgerMapper.selectOne(new LambdaQueryWrapper<SalesLedger>()
                    .eq(SalesLedger::getSalesContractNo, purchaseLedger.getSalesContractNo())
                    .last("LIMIT 1"));
            purchaseLedger.setSalesLedgerId(salesLedger == null ? null : salesLedger.getId());
        } else {
            purchaseLedger.setSalesLedgerId(null);
        }
        purchaseLedger.setApproveUserIds(convertImportedApproverNames(purchaseLedger.getApproveUserIds()));
        return purchaseLedger;
    }

    private String convertImportedApproverNames(String approverNames) {
        if (!StringUtils.hasText(approverNames)) {
            return approverNames;
        }
        List<Long> userIds = new ArrayList<>();
        for (String approverName : approverNames.split("[，,]")) {
            String trimmedName = StringUtils.trim(approverName);
            if (!StringUtils.hasText(trimmedName)) {
                continue;
            }
            SysUser user = sysUserMapper.selectOne(new LambdaQueryWrapper<SysUser>()
                    .eq(SysUser::getNickName, trimmedName)
                    .last("LIMIT 1"));
            if (user != null) {
                userIds.add(user.getUserId());
            }
        }
        return userIds.stream().map(String::valueOf).collect(Collectors.joining(","));
    }

    private ProductModel findOrCreateImportedProductModel(
            PurchaseLedgerProductImportDto productImport,
            Map<String, ProductModel> cache) {
        String productCategory = requireImportText(
                productImport.getProductCategory(), "采购产品的产品大类不能为空！");
        String specificationModel = StringUtils.trim(productImport.getSpecificationModel());
        if (!StringUtils.hasText(specificationModel)) {
            specificationModel = productCategory;
        }
        productImport.setProductCategory(productCategory);
        productImport.setSpecificationModel(specificationModel);
        productImport.setUnit(StringUtils.trim(productImport.getUnit()));

        String cacheKey = productCategory + "::" + specificationModel;
        ProductModel cachedModel = cache.get(cacheKey);
        if (cachedModel != null) {
            return cachedModel;
        }

        List<Product> sameNameProducts = productMapper.selectList(new LambdaQueryWrapper<Product>()
                .eq(Product::getProductName, productCategory));
        for (Product product : sameNameProducts) {
            ProductModel existingModel = productModelMapper.selectOne(new LambdaQueryWrapper<ProductModel>()
                    .eq(ProductModel::getProductId, product.getId())
                    .eq(ProductModel::getModel, specificationModel)
                    .last("LIMIT 1"));
            if (existingModel != null) {
                cache.put(cacheKey, existingModel);
                return existingModel;
            }
        }

        Product product = sameNameProducts.stream()
                .filter(item -> Objects.equals(item.getParentId(), IMPORT_PRODUCT_PARENT_ID))
                .findFirst()
                .orElse(null);
        if (product == null) {
            product = new Product();
            product.setParentId(IMPORT_PRODUCT_PARENT_ID);
            product.setProductName(productCategory);
            productMapper.insert(product);
        }

        ProductModel productModel = new ProductModel();
        productModel.setProductId(product.getId());
        productModel.setModel(specificationModel);
        productModel.setUnit(productImport.getUnit());
        productModel.setProductCode(specificationModel + "-001");
        productModelMapper.insert(productModel);
        cache.put(cacheKey, productModel);
        return productModel;
    }

    private void updateImportedPurchaseLedger(PurchaseLedger purchaseLedger) {
        purchaseLedgerMapper.update(null, new LambdaUpdateWrapper<PurchaseLedger>()
                .eq(PurchaseLedger::getId, purchaseLedger.getId())
                .set(PurchaseLedger::getPurchaseContractNumber, purchaseLedger.getPurchaseContractNumber())
                .set(PurchaseLedger::getSupplierId, purchaseLedger.getSupplierId())
                .set(PurchaseLedger::getSupplierName, purchaseLedger.getSupplierName())
                .set(PurchaseLedger::getRecorderId, purchaseLedger.getRecorderId())
                .set(PurchaseLedger::getRecorderName, purchaseLedger.getRecorderName())
                .set(PurchaseLedger::getSalesContractNo, purchaseLedger.getSalesContractNo())
                .set(PurchaseLedger::getProjectName, purchaseLedger.getProjectName())
                .set(PurchaseLedger::getEntryDate, purchaseLedger.getEntryDate())
                .set(PurchaseLedger::getExecutionDate, purchaseLedger.getExecutionDate())
                .set(PurchaseLedger::getRemarks, purchaseLedger.getRemarks())
                .set(PurchaseLedger::getSalesLedgerId, purchaseLedger.getSalesLedgerId())
                .set(PurchaseLedger::getContractAmount, purchaseLedger.getContractAmount())
                .set(PurchaseLedger::getPaymentMethod, purchaseLedger.getPaymentMethod())
                .set(PurchaseLedger::getApproveUserIds, purchaseLedger.getApproveUserIds())
                .set(PurchaseLedger::getApprovalStatus, 1)
                .set(PurchaseLedger::getUpdatedAt, new Date()));
    }

    private void clearImportedPurchaseContents(Long purchaseLedgerId, String purchaseContractNumber) {
        List<QualityInspect> qualityInspects = qualityInspectMapper.selectList(
                new LambdaQueryWrapper<QualityInspect>()
                        .eq(QualityInspect::getPurchaseLedgerId, purchaseLedgerId));
        boolean hasSubmittedInspect = qualityInspects.stream()
                .anyMatch(inspect -> Objects.equals(inspect.getInspectState(), 1));
        if (hasSubmittedInspect) {
            throw new BaseException("采购单号:" + purchaseContractNumber + ",存在已提交的检验单，不能覆盖！");
        }
        List<Long> inspectIds = qualityInspects.stream()
                .map(QualityInspect::getId)
                .collect(Collectors.toList());
        if (CollectionUtils.isNotEmpty(inspectIds)) {
            qualityInspectParamMapper.delete(new LambdaQueryWrapper<QualityInspectParam>()
                    .in(QualityInspectParam::getInspectId, inspectIds));
            qualityInspectMapper.delete(new LambdaQueryWrapper<QualityInspect>()
                    .eq(QualityInspect::getPurchaseLedgerId, purchaseLedgerId));
        }

        List<SalesLedgerProduct> existingProducts = salesLedgerProductMapper.selectList(
                new LambdaQueryWrapper<SalesLedgerProduct>()
                        .eq(SalesLedgerProduct::getSalesLedgerId, purchaseLedgerId)
                        .eq(SalesLedgerProduct::getType, 2));
        for (SalesLedgerProduct existingProduct : existingProducts) {
            procurementRecordStorageMapper.delete(new LambdaQueryWrapper<ProcurementRecordStorage>()
                    .eq(ProcurementRecordStorage::getSalesLedgerProductId, existingProduct.getId()));
        }
        salesLedgerProductMapper.delete(new LambdaQueryWrapper<SalesLedgerProduct>()
                .eq(SalesLedgerProduct::getSalesLedgerId, purchaseLedgerId)
                .eq(SalesLedgerProduct::getType, 2));
    }

    private boolean isSameImportedPurchase(
            PurchaseLedger existingLedger, PurchaseLedgerImportDto purchaseImport) {
        return sameImportText(existingLedger.getPurchaseContractNumber(), purchaseImport.getPurchaseContractNumber())
                && sameImportText(existingLedger.getSupplierName(), purchaseImport.getSupplierName())
                && sameImportText(existingLedger.getProjectName(), purchaseImport.getProjectName())
                && sameImportDate(existingLedger.getExecutionDate(), purchaseImport.getExecutionDate())
                && sameImportDate(existingLedger.getEntryDate(), purchaseImport.getEntryDate());
    }

    private boolean sameImportText(String left, String right) {
        return Objects.equals(StringUtils.trim(left), StringUtils.trim(right));
    }

    private boolean sameImportDate(Date left, Date right) {
        if (left == null || right == null) {
            return left == null && right == null;
        }
        LocalDate leftDate = Instant.ofEpochMilli(left.getTime())
                .atZone(ZoneId.systemDefault())
                .toLocalDate();
        LocalDate rightDate = Instant.ofEpochMilli(right.getTime())
                .atZone(ZoneId.systemDefault())
                .toLocalDate();
        return leftDate.equals(rightDate);
    }

    private String requireImportText(String value, String message) {
        String trimmedValue = StringUtils.trim(value);
        if (!StringUtils.hasText(trimmedValue)) {
            throw new BaseException(message);
        }
        return trimmedValue;
    }

    @Override
    public PurchaseLedgerDto getPurchaseByCode(PurchaseLedgerDto purchaseLedgerDto) {
        // 1. 查询主表
        PurchaseLedger purchaseLedger = purchaseLedgerMapper.selectOne(new LambdaQueryWrapper<PurchaseLedger>()
                .eq(PurchaseLedger::getPurchaseContractNumber, purchaseLedgerDto.getPurchaseContractNumber())
                .last("LIMIT 1"));
        if (purchaseLedger == null) {
            throw new BaseException("采购台账不存在");
        }

        // 2. 查询子表
        LambdaQueryWrapper<SalesLedgerProduct> productWrapper = new LambdaQueryWrapper<>();
        productWrapper.eq(SalesLedgerProduct::getSalesLedgerId, purchaseLedger.getId())
                .eq(SalesLedgerProduct::getType, 2);
        List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(productWrapper);

        // 4. 转换 DTO
        PurchaseLedgerDto resultDto = new PurchaseLedgerDto();
        BeanUtils.copyProperties(purchaseLedger, resultDto);
        AmountUtils.normalizeContractAmount(resultDto);
        if (!products.isEmpty()) {
            AmountUtils.normalizeSalesLedgerProducts(products);
            resultDto.setHasChildren(true);
            resultDto.setProductData(products);
        }
        return resultDto;
    }

    public void addApproveByPurchase(LoginUser loginUser,PurchaseLedger purchaseLedger) throws Exception {
        if (loginUser == null) {
            return;
        }
        ApproveProcessVO approveProcessVO = new ApproveProcessVO();
        approveProcessVO.setApproveType(5);
        approveProcessVO.setApproveDeptId(loginUser.getCurrentDeptId());
        approveProcessVO.setApproveReason(purchaseLedger.getPurchaseContractNumber());
        approveProcessVO.setApproveUserIds(purchaseLedger.getApproveUserIds());
        approveProcessVO.setApproveUser(loginUser.getUserId());
        approveProcessVO.setApproveTime(LocalDate.now().toString());
        approveProcessVO.setPrice(AmountUtils.scaleAmount(purchaseLedger.getContractAmount()));
        approveProcessService.addApprove(approveProcessVO);
    }

    /**
     * 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
    public Map<String, Object> getPrintData(Long id) {
        PurchaseLedger purchaseLedger = getById(id);
        if (purchaseLedger == null) {
            return null;
        }
        List<SalesLedgerProduct> products = salesLedgerProductMapper.selectList(
            new LambdaQueryWrapper<SalesLedgerProduct>()
                .eq(SalesLedgerProduct::getSalesLedgerId, id)
                .eq(SalesLedgerProduct::getType, 2)
        );
        SysDept dept = sysDeptMapper.selectDeptById(100L);
        Map<String, Object> result = new HashMap<>();
        result.put("companyName", dept != null ? dept.getDeptName() : "");
        result.put("ledger", purchaseLedger);
        result.put("products", products);
        return result;
    }
}