package cn.iocoder.yudao.module.erp.service.sale;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.CommonResult;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.number.MoneyUtils;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.bpm.api.task.BpmProcessInstanceApi;
import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmCategoryDO;
import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
import cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum;
import cn.iocoder.yudao.module.bpm.service.definition.BpmCategoryService;
import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
import cn.iocoder.yudao.module.crm.api.customer.CrmCustomerApi;
import cn.iocoder.yudao.module.crm.api.customer.dto.CrmCustomerRespDTO;
import cn.iocoder.yudao.module.crm.api.contract.CrmContractApi;
import cn.iocoder.yudao.module.erp.controller.admin.sale.vo.order.ErpSaleOrderPageReqVO;
import cn.iocoder.yudao.module.erp.controller.admin.sale.vo.order.ErpSaleOrderSaveReqVO;
import cn.iocoder.yudao.module.erp.controller.admin.sale.vo.order.ErpSaleOrderImportExcelVO;
import cn.iocoder.yudao.module.erp.controller.admin.sale.vo.order.ErpSaleOrderImportRespVO;
import cn.iocoder.yudao.module.erp.dal.dataobject.sale.ErpSaleOrderDO;
import cn.iocoder.yudao.module.erp.dal.dataobject.sale.ErpSaleOrderItemDO;
import cn.iocoder.yudao.module.erp.dal.mysql.sale.ErpSaleOrderItemMapper;
import cn.iocoder.yudao.module.erp.dal.mysql.sale.ErpSaleOrderMapper;
import cn.iocoder.yudao.module.erp.dal.redis.no.ErpNoRedisDAO;
import cn.iocoder.yudao.module.erp.enums.ErpAuditStatus;
import cn.iocoder.yudao.module.erp.api.sale.enums.ErpSaleOrderOutStatusEnum;
import cn.iocoder.yudao.module.erp.service.finance.ErpAccountService;
import cn.iocoder.yudao.module.mdm.api.item.MdmItemApi;
import cn.iocoder.yudao.module.mdm.api.item.dto.MdmItemRespDTO;
import cn.iocoder.yudao.module.mes.api.mps.MesProMpsApi;
import cn.iocoder.yudao.module.mes.api.mps.dto.MesProMpsCreateReqDTO;
import cn.iocoder.yudao.module.mes.api.mps.dto.MesProMpsRespDTO;
import cn.iocoder.yudao.module.system.api.storage.StorageAttachmentApi;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import jakarta.annotation.Resource;
import org.flowable.engine.repository.ProcessDefinition;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
import static cn.iocoder.yudao.module.erp.enums.ErrorCodeConstants.*;

/**
 * ERP 销售订单 Service 实现类
 *
 * @author 超级管理员
 */
@Service
@Validated
@Slf4j
public class ErpSaleOrderServiceImpl implements ErpSaleOrderService {

    /**
     * MPS 状态：已取消（对应 MES 模块 MesProMpsStatusEnum.CANCELED 的值 3）
     */
    private static final Integer MPS_STATUS_CANCELED = 3;

    /**
     * BPM 销售订单审批分类编码
     */
    private static final String SALE_ORDER_APPROVE_CATEGORY_CODE = "sale_order_approve";
    /**
     * BPM 销售订单审批流程定义 Key（提交后进入协同办公审批）
     */
    private static final String SALE_ORDER_APPROVE_PROCESS_DEFINITION_KEY = "sale_order_approve";

    @Resource
    private ErpSaleOrderMapper saleOrderMapper;
    @Resource
    private ErpSaleOrderItemMapper saleOrderItemMapper;

    @Resource
    private ErpNoRedisDAO noRedisDAO;

    @Resource
    private CrmCustomerApi customerApi;
    @Resource
    private CrmContractApi contractApi;
    @Resource
    private ErpAccountService accountService;

    @Resource
    private AdminUserApi adminUserApi;

    @Resource
    private MdmItemApi mdmItemApi;
    @Resource
    private MesProMpsApi mpsApi;

    @Resource
    private StorageAttachmentApi storageAttachmentApi;

    @Resource
    private BpmProcessInstanceApi processInstanceApi;
    @Resource
    private BpmCategoryService bpmCategoryService;
    @Resource
    private BpmProcessDefinitionService bpmProcessDefinitionService;

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Long createSaleOrder(ErpSaleOrderSaveReqVO createReqVO) {
        // 1.1 校验订单项的有效性
        List<ErpSaleOrderItemDO> saleOrderItems = validateSaleOrderItems(createReqVO.getItems());
        // 1.2 校验客户（使用 CRM 客户 API）
        customerApi.validateCustomer(createReqVO.getCustomerId());
        // 1.3 校验结算账户
        if (createReqVO.getAccountId() != null) {
            accountService.validateAccount(createReqVO.getAccountId());
        }
        // 1.4 校验销售人员
        if (createReqVO.getSaleUserId() != null) {
            adminUserApi.validateUser(createReqVO.getSaleUserId());
        }
        // 1.5 生成订单号，并校验唯一性
        String no = noRedisDAO.generate(ErpNoRedisDAO.SALE_ORDER_NO_PREFIX);
        if (saleOrderMapper.selectByNo(no) != null) {
            throw exception(SALE_ORDER_NO_EXISTS);
        }

        // 2.1 插入订单（创建后为未提交状态，需手动提交审批到协同办公）
        ErpSaleOrderDO saleOrder = BeanUtils.toBean(createReqVO, ErpSaleOrderDO.class, in -> in
                .setNo(no).setStatus(ErpAuditStatus.DRAFT.getStatus())
                .setDepositPrice(ObjectUtil.defaultIfNull(createReqVO.getDepositPrice(), BigDecimal.ZERO))
                .setOutCount(BigDecimal.ZERO).setOutStatus(ErpSaleOrderOutStatusEnum.NOT_OUT.getStatus()));
        calculateTotalPrice(saleOrder, saleOrderItems);
        saleOrderMapper.insert(saleOrder);
        // 2.2 插入订单项
        saleOrderItems.forEach(o -> o.setOrderId(saleOrder.getId()));
        saleOrderItemMapper.insertBatch(saleOrderItems);
        // 2.3 绑定附件
        storageAttachmentApi.bindAttachments("file", "erp_sale_order",
                saleOrder.getId(), createReqVO.getBlobIds());
        return saleOrder.getId();
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateSaleOrder(ErpSaleOrderSaveReqVO updateReqVO) {
        // 1.1 校验存在
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(updateReqVO.getId());
        // 1.2 校验状态：只有未提交或已驳回的销售订单才能修改
        if (!ErpAuditStatus.DRAFT.getStatus().equals(saleOrder.getStatus())
                && !ErpAuditStatus.REJECT.getStatus().equals(saleOrder.getStatus())) {
            throw exception(SALE_ORDER_UPDATE_FAIL_APPROVE, saleOrder.getNo());
        }
        // 1.3 校验客户（使用 CRM 客户 API）
        customerApi.validateCustomer(updateReqVO.getCustomerId());
        // 1.3 校验结算账户
        if (updateReqVO.getAccountId() != null) {
            accountService.validateAccount(updateReqVO.getAccountId());
        }
        // 1.4 校验销售人员
        if (updateReqVO.getSaleUserId() != null) {
            adminUserApi.validateUser(updateReqVO.getSaleUserId());
        }
        // 1.5 校验订单项的有效性
        List<ErpSaleOrderItemDO> saleOrderItems = validateSaleOrderItems(updateReqVO.getItems());

        // 2.1 更新订单
        ErpSaleOrderDO updateObj = BeanUtils.toBean(updateReqVO, ErpSaleOrderDO.class);
        updateObj.setDepositPrice(ObjectUtil.defaultIfNull(updateReqVO.getDepositPrice(), BigDecimal.ZERO));
        calculateTotalPrice(updateObj, saleOrderItems);
        saleOrderMapper.updateById(updateObj);
        // 2.2 更新订单项
        updateSaleOrderItemList(updateReqVO.getId(), saleOrderItems);
        // 2.3 更新附件
        storageAttachmentApi.updateAttachments("file", "erp_sale_order", updateReqVO.getId(), updateReqVO.getBlobIds());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public ErpSaleOrderImportRespVO importSaleOrderList(List<ErpSaleOrderImportExcelVO> importList) {
        ErpSaleOrderImportRespVO respVO = ErpSaleOrderImportRespVO.builder()
                .createList(new ArrayList<>())
                .updateList(new ArrayList<>())
                .failureList(new LinkedHashMap<>())
                .build();
        if (CollUtil.isEmpty(importList)) {
            return respVO;
        }

        // 1. 预热“客户名称 -> 客户编号”映射（客户主数据在 CRM 模块）
        Map<String, Long> customerIdMap = new HashMap<>();
        List<CrmCustomerRespDTO> customers = customerApi.getCustomerSimpleList();
        if (CollUtil.isNotEmpty(customers)) {
            customers.forEach(customer -> {
                if (StrUtil.isNotBlank(customer.getName())) {
                    customerIdMap.putIfAbsent(customer.getName().trim(), customer.getId());
                }
            });
        }

        // 2. 按“销售单编号”分组：同编号多行 = 一张订单的多条明细；编号为空则每行独立成单
        Map<String, List<ErpSaleOrderImportExcelVO>> orderGroups = new LinkedHashMap<>();
        for (int i = 0; i < importList.size(); i++) {
            ErpSaleOrderImportExcelVO row = importList.get(i);
            if (row == null || (StrUtil.isBlank(row.getCustomerName()) && StrUtil.isBlank(row.getProductCode())
                    && StrUtil.isBlank(row.getNo()))) {
                continue; // 跳过空行
            }
            String key = StrUtil.isNotBlank(row.getNo()) ? row.getNo().trim() : "__row_" + (i + 2);
            orderGroups.computeIfAbsent(key, k -> new ArrayList<>()).add(row);
        }

        // 3. 逐个订单导入（单张订单失败不影响其它）
        for (Map.Entry<String, List<ErpSaleOrderImportExcelVO>> entry : orderGroups.entrySet()) {
            List<ErpSaleOrderImportExcelVO> rows = entry.getValue();
            String label = StrUtil.isNotBlank(rows.get(0).getNo()) ? rows.get(0).getNo().trim()
                    : "第 " + entry.getKey().substring("__row_".length()) + " 行";
            try {
                ErpSaleOrderDO saleOrder = createSaleOrderByImport(rows, customerIdMap);
                respVO.getCreateList().add(saleOrder.getNo());
            } catch (Exception ex) {
                respVO.getFailureList().put(label, resolveImportErrorMessage(ex));
            }
        }
        return respVO;
    }

    /**
     * 依据导入数据创建一张销售订单（含明细）。
     *
     * 注意：此处不调用 submitSaleOrder，因此不会创建 BPM 工作流；订单状态固定为“未提交(0)”，
     * 可在列表中继续编辑或提交审批。
     */
    private ErpSaleOrderDO createSaleOrderByImport(List<ErpSaleOrderImportExcelVO> rows,
                                                   Map<String, Long> customerIdMap) {
        // 1. 客户（取该组首行）
        ErpSaleOrderImportExcelVO head = rows.get(0);
        if (StrUtil.isBlank(head.getCustomerName())) {
            throw new IllegalArgumentException("客户名称不能为空");
        }
        Long customerId = customerIdMap.get(head.getCustomerName().trim());
        if (customerId == null) {
            throw new IllegalArgumentException("客户不存在：" + head.getCustomerName());
        }
        customerApi.validateCustomer(customerId);

        // 2. 明细
        List<ErpSaleOrderSaveReqVO.Item> items = new ArrayList<>();
        for (ErpSaleOrderImportExcelVO row : rows) {
            if (StrUtil.isBlank(row.getProductCode())) {
                throw new IllegalArgumentException("产品编码不能为空");
            }
            CommonResult<MdmItemRespDTO> itemResult = mdmItemApi.getItemByCode(row.getProductCode().trim());
            MdmItemRespDTO item = itemResult == null ? null : itemResult.getData();
            if (item == null) {
                throw new IllegalArgumentException("产品不存在：" + row.getProductCode());
            }
            if (row.getCount() == null) {
                throw new IllegalArgumentException("产品[" + row.getProductCode() + "]的数量不能为空");
            }
            if (item.getUnitMeasureId() == null) {
                throw new IllegalArgumentException("产品[" + row.getProductCode() + "]未配置计量单位，请先在物料中维护");
            }
            ErpSaleOrderSaveReqVO.Item itemVO = new ErpSaleOrderSaveReqVO.Item();
            itemVO.setProductId(item.getId());
            itemVO.setProductUnitId(item.getUnitMeasureId());
            // 单价：未填写时取物料的销售价（与页面选产品后的默认值一致）
            itemVO.setProductPrice(row.getProductPrice() != null ? row.getProductPrice()
                    : ObjectUtil.defaultIfNull(item.getSalesPrice(), BigDecimal.ZERO));
            itemVO.setCount(row.getCount());
            itemVO.setTaxPercent(row.getTaxPercent());
            itemVO.setNeedProduction(parseNeedProduction(row.getNeedProduction()));
            itemVO.setRemark(row.getRemark());
            items.add(itemVO);
        }

        // 3. 单号：填了就用（校验唯一），没填自动生成
        String no = StrUtil.isNotBlank(head.getNo()) ? head.getNo().trim()
                : noRedisDAO.generate(ErpNoRedisDAO.SALE_ORDER_NO_PREFIX);
        if (saleOrderMapper.selectByNo(no) != null) {
            throw new IllegalArgumentException("销售单编号已存在：" + no);
        }

        // 4. 组装主表：导入后固定为“未提交(0)”状态
        ErpSaleOrderDO saleOrder = new ErpSaleOrderDO();
        saleOrder.setNo(no);
        saleOrder.setCustomerId(customerId);
        saleOrder.setContractNo(head.getContractNo());
        saleOrder.setOrderTime(parseImportOrderTime(head.getOrderTime()));
        saleOrder.setRemark(head.getRemark());
        saleOrder.setStatus(ErpAuditStatus.DRAFT.getStatus());
        saleOrder.setDepositPrice(BigDecimal.ZERO);
        saleOrder.setOutCount(BigDecimal.ZERO);
        saleOrder.setOutStatus(ErpSaleOrderOutStatusEnum.NOT_OUT.getStatus());

        List<ErpSaleOrderItemDO> itemDOs = validateSaleOrderItems(items);
        calculateTotalPrice(saleOrder, itemDOs);
        saleOrderMapper.insert(saleOrder);
        itemDOs.forEach(item -> item.setOrderId(saleOrder.getId()));
        saleOrderItemMapper.insertBatch(itemDOs);
        return saleOrder;
    }

    /**
     * 解析“是否需要生产”：留空默认“是(1)”，填“否/0/不需要”则为“否(0)”
     */
    private Integer parseNeedProduction(String text) {
        if (StrUtil.isBlank(text)) {
            return 1; // 与页面新增明细的默认值一致
        }
        String value = text.trim();
        boolean no = "否".equals(value) || "0".equals(value) || "不需要".equals(value)
                || "false".equalsIgnoreCase(value) || "no".equalsIgnoreCase(value);
        return no ? 0 : 1;
    }

    /**
     * 解析导入的下单时间，兼容多种常见格式；为空取当前时间
     */
    private LocalDateTime parseImportOrderTime(String text) {
        if (StrUtil.isBlank(text)) {
            return LocalDateTime.now();
        }
        String value = text.trim();
        for (String pattern : new String[]{"yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy/MM/dd HH:mm:ss"}) {
            try {
                return LocalDateTime.parse(value, DateTimeFormatter.ofPattern(pattern));
            } catch (Exception ignored) {
                // 继续尝试下一个格式
            }
        }
        for (String pattern : new String[]{"yyyy-MM-dd", "yyyy/M/d"}) {
            try {
                return LocalDate.parse(value, DateTimeFormatter.ofPattern(pattern)).atStartOfDay();
            } catch (Exception ignored) {
                // 继续尝试下一个格式
            }
        }
        throw new IllegalArgumentException("下单时间格式不正确：" + text + "，示例 2026-01-01 10:00:00");
    }

    /**
     * 提取导入失败原因（ServiceException 取业务提示）
     */
    private String resolveImportErrorMessage(Exception ex) {
        if (ex instanceof cn.iocoder.yudao.framework.common.exception.ServiceException serviceException) {
            return serviceException.getMessage();
        }
        return StrUtil.blankToDefault(ex.getMessage(), "导入失败");
    }

    private void calculateTotalPrice(ErpSaleOrderDO saleOrder, List<ErpSaleOrderItemDO> saleOrderItems) {
        saleOrder.setTotalCount(getSumValue(saleOrderItems, ErpSaleOrderItemDO::getCount, BigDecimal::add));
        saleOrder.setTotalProductPrice(getSumValue(saleOrderItems, ErpSaleOrderItemDO::getTotalPrice, BigDecimal::add, BigDecimal.ZERO));
        saleOrder.setTotalTaxPrice(getSumValue(saleOrderItems, ErpSaleOrderItemDO::getTaxPrice, BigDecimal::add, BigDecimal.ZERO));
        saleOrder.setTotalPrice(saleOrder.getTotalProductPrice().add(saleOrder.getTotalTaxPrice()));
        // 计算优惠价格
        if (saleOrder.getDiscountPercent() == null) {
            saleOrder.setDiscountPercent(BigDecimal.ZERO);
        }
        saleOrder.setDiscountPrice(MoneyUtils.priceMultiplyPercent(saleOrder.getTotalPrice(), saleOrder.getDiscountPercent()));
        saleOrder.setTotalPrice(saleOrder.getTotalPrice().subtract(saleOrder.getDiscountPrice()));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void submitSaleOrder(Long id, String processDefinitionKey, Long userId) {
        // 1. 校验存在
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(id);
        // 2. 校验状态：只有未提交或已驳回的销售订单才能提交
        if (!ErpAuditStatus.DRAFT.getStatus().equals(saleOrder.getStatus())
                && !ErpAuditStatus.REJECT.getStatus().equals(saleOrder.getStatus())) {
            throw exception(SALE_ORDER_SUBMIT_FAIL_STATUS, saleOrder.getNo());
        }
        // 3. 校验订单项不能为空
        List<ErpSaleOrderItemDO> items = saleOrderItemMapper.selectListByOrderId(id);
        if (CollUtil.isEmpty(items)) {
            throw exception(SALE_ORDER_SUBMIT_FAIL_ITEM_EMPTY, saleOrder.getNo());
        }

        // 4. 创建 BPM 流程实例（审批在协同办公完成）
        String processInstanceId = processInstanceApi.createProcessInstance(userId,
                new BpmProcessInstanceCreateReqDTO()
                        .setProcessDefinitionKey(processDefinitionKey)
                        .setBusinessKey(String.valueOf(id)));

        // 5. 更新销售订单状态为审批中，记录流程实例编号
        saleOrderMapper.updateById(new ErpSaleOrderDO()
                .setId(id)
                .setStatus(ErpAuditStatus.APPROVING.getStatus())
                .setProcessInstanceId(processInstanceId));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateSaleOrderAuditStatus(Long id, Integer bpmResult) {
        // 1. 校验存在
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(id);
        if (!ErpAuditStatus.APPROVING.getStatus().equals(saleOrder.getStatus())) {
            log.warn("[updateSaleOrderAuditStatus] 销售订单({}) 不处于审批中状态，跳过", id);
            return;
        }

        // 2. 根据审批结果更新状态
        Integer newStatus = convertBpmResultToAuditStatus(bpmResult);
        if (newStatus != null) {
            saleOrderMapper.updateById(new ErpSaleOrderDO()
                    .setId(id).setStatus(newStatus));
        }

        // 3. 审核通过时，为需要生产的明细创建 MPS
        if (ErpAuditStatus.APPROVE.getStatus().equals(newStatus)) {
            createMpsForSaleOrder(id, saleOrder);
        }
    }

    @Override
    public List<Map<String, Object>> getSaleOrderApproveProcessDefinitionList() {
        // 1. 校验分类和流程定义是否存在
        validateSaleOrderApproveCategoryAndProcessDefinition();

        // 2. 获取分类下的流程定义信息
        List<BpmProcessDefinitionInfoDO> definitionInfoList = bpmProcessDefinitionService
                .getProcessDefinitionInfoListByCategory(SALE_ORDER_APPROVE_CATEGORY_CODE);
        if (CollUtil.isEmpty(definitionInfoList)) {
            return Collections.emptyList();
        }

        // 3. 遍历获取流程定义详情，过滤激活状态，保留最新版本
        Map<String, ProcessDefinition> latestVersionMap = new HashMap<>();
        for (BpmProcessDefinitionInfoDO info : definitionInfoList) {
            ProcessDefinition pd = bpmProcessDefinitionService.getProcessDefinition(info.getProcessDefinitionId());
            if (pd == null || pd.isSuspended()) {
                continue;
            }
            ProcessDefinition existing = latestVersionMap.get(pd.getKey());
            if (existing == null || pd.getVersion() > existing.getVersion()) {
                latestVersionMap.put(pd.getKey(), pd);
            }
        }

        // 4. 返回流程定义列表
        List<Map<String, Object>> result = new ArrayList<>();
        for (ProcessDefinition pd : latestVersionMap.values()) {
            Map<String, Object> item = new HashMap<>();
            item.put("id", pd.getId());
            item.put("key", pd.getKey());
            item.put("name", pd.getName());
            result.add(item);
        }
        return result;
    }

    /**
     * 校验销售订单审批分类是否存在
     */
    private void validateSaleOrderApproveCategoryAndProcessDefinition() {
        // 1. 校验分类是否存在
        List<BpmCategoryDO> categories = bpmCategoryService.getCategoryListByCode(
                Collections.singletonList(SALE_ORDER_APPROVE_CATEGORY_CODE));
        if (CollUtil.isEmpty(categories)) {
            throw exception(SALE_ORDER_BPM_CATEGORY_NOT_EXISTS);
        }
    }

    /**
     * 转换 BPM 审批结果为审核状态
     */
    private Integer convertBpmResultToAuditStatus(Integer bpmResult) {
        if (BpmTaskStatusEnum.APPROVE.getStatus().equals(bpmResult)) {
            return ErpAuditStatus.APPROVE.getStatus();
        } else if (BpmTaskStatusEnum.REJECT.getStatus().equals(bpmResult)) {
            return ErpAuditStatus.REJECT.getStatus();
        } else if (BpmTaskStatusEnum.CANCEL.getStatus().equals(bpmResult)) {
            return ErpAuditStatus.CANCEL.getStatus();
        }
        return null;
    }

    /**
     * 为销售订单中需要生产的明细创建 MPS
     *
     * @param orderId   销售订单编号
     * @param saleOrder 销售订单
     */
    private void createMpsForSaleOrder(Long orderId, ErpSaleOrderDO saleOrder) {
        List<ErpSaleOrderItemDO> items = saleOrderItemMapper.selectListByOrderId(orderId);
        if (CollUtil.isEmpty(items)) {
            return;
        }

        int mpsCount = 0;
        for (ErpSaleOrderItemDO item : items) {
            if (item.getNeedProduction() == null || item.getNeedProduction() != 1) {
                continue;
            }
            // 避免审批/反审批重复操作导致同一个销售订单号产生多条 MPS
            MesProMpsRespDTO existingMps = mpsApi.getMpsBySaleOrderItemId(item.getId());
            if (existingMps != null && ObjectUtil.notEqual(existingMps.getStatus(), MPS_STATUS_CANCELED)) {
                log.info("[createMpsForSaleOrder] 销售订单明细({}) 已存在 MPS({})，状态={}，跳过创建",
                        item.getId(), existingMps.getId(), existingMps.getStatus());
                continue;
            }
            try {
                Long mpsId = createMpsForSaleOrderItem(saleOrder, item);
                if (mpsId != null) {
                    mpsCount++;
                    // 更新销售订单明细的 MPS 关联
                    saleOrderItemMapper.updateById(new ErpSaleOrderItemDO()
                            .setId(item.getId())
                            .setMpsId(mpsId));
                }
            } catch (Exception e) {
                log.error("[createMpsForSaleOrder] 创建 MPS 失败，saleOrderItemId={}", item.getId(), e);
            }
        }
        log.info("[createMpsForSaleOrder] 销售订单({}) 审核完成，创建 MPS {} 条", orderId, mpsCount);
    }

    /**
     * 为销售订单明细创建 MPS
     */
    private Long createMpsForSaleOrderItem(ErpSaleOrderDO saleOrder, ErpSaleOrderItemDO item) {
        // 获取 MDM 物料信息（用于获取产品名称）
        String productName = null;
        try {
            MdmItemRespDTO mdmItem = mdmItemApi.getItem(item.getProductId()).getCheckedData();
            if (mdmItem != null) {
                productName = mdmItem.getName();
            }
        } catch (Exception e) {
            log.warn("[createMpsForSaleOrderItem] 获取 MDM 物料信息失败，productId={}", item.getProductId(), e);
        }

        MesProMpsCreateReqDTO createReqDTO = new MesProMpsCreateReqDTO();
        createReqDTO.setSaleOrderId(saleOrder.getId());
        createReqDTO.setSaleOrderNo(saleOrder.getNo());
        createReqDTO.setSaleOrderItemId(item.getId());
        createReqDTO.setMdmItemId(item.getProductId());
        createReqDTO.setProductName(productName);
        createReqDTO.setQuantity(item.getCount());
        createReqDTO.setClientId(saleOrder.getCustomerId());
        createReqDTO.setRequestDate(formatRequestDate(saleOrder.getOrderTime()));
        createReqDTO.setRemark("自动生成，来自销售订单：" + saleOrder.getNo());

        Long mpsId = mpsApi.createMps(createReqDTO);
        log.info("[createMpsForSaleOrderItem] MPS 创建成功，mpsId={}, saleOrderItemId={}", mpsId, item.getId());
        return mpsId;
    }

    /**
     * 格式化需求日期
     */
    private String formatRequestDate(LocalDateTime dateTime) {
        if (dateTime == null) {
            return null;
        }
        return dateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void cancelSaleOrder(Long id) {
        // 1.1 校验存在
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(id);
        // 1.2 校验状态：只有已审核的订单才能作废
        if (!ErpAuditStatus.APPROVE.getStatus().equals(saleOrder.getStatus())) {
            throw exception(SALE_ORDER_CANCEL_FAIL_NOT_APPROVE, saleOrder.getNo());
        }
        // 1.3 存在销售出库单，无法作废
        BigDecimal outCount = saleOrder.getOutCount() != null ? saleOrder.getOutCount() : BigDecimal.ZERO;
        if (outCount.compareTo(BigDecimal.ZERO) > 0) {
            throw exception(SALE_ORDER_CANCEL_FAIL_EXISTS_OUT);
        }

        // 2. 更新状态为已作废
        int updateCount = saleOrderMapper.updateByIdAndStatus(id, saleOrder.getStatus(),
                new ErpSaleOrderDO().setStatus(ErpAuditStatus.CANCEL.getStatus()));
        if (updateCount == 0) {
            throw exception(SALE_ORDER_CANCEL_FAIL);
        }

        // 3. 同步更新关联合同状态为已作废
        if (saleOrder.getContractId() != null) {
            contractApi.updateContractStatus(saleOrder.getContractId(), 50).getCheckedData(); // 50 = 已作废
        }
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void enableSaleOrder(Long id) {
        // 1.1 校验存在
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(id);
        // 1.2 校验状态：只有已作废的订单才能重新启用
        if (!ErpAuditStatus.CANCEL.getStatus().equals(saleOrder.getStatus())) {
            throw exception(SALE_ORDER_ENABLE_FAIL_NOT_CANCEL, saleOrder.getNo());
        }

        // 2. 更新状态为已审核
        int updateCount = saleOrderMapper.updateByIdAndStatus(id, saleOrder.getStatus(),
                new ErpSaleOrderDO().setStatus(ErpAuditStatus.APPROVE.getStatus()));
        if (updateCount == 0) {
            throw exception(SALE_ORDER_ENABLE_FAIL);
        }

        // 3. 同步更新关联合同状态为审核通过
        if (saleOrder.getContractId() != null) {
            contractApi.updateContractStatus(saleOrder.getContractId(), 20).getCheckedData(); // 20 = 审核通过
        }
    }

    private List<ErpSaleOrderItemDO> validateSaleOrderItems(List<ErpSaleOrderSaveReqVO.Item> list) {
        // 转化为 ErpSaleOrderItemDO 列表（产品验证已移除）
        return convertList(list, o -> BeanUtils.toBean(o, ErpSaleOrderItemDO.class, item -> {
            item.setTotalPrice(MoneyUtils.priceMultiply(item.getProductPrice(), item.getCount()));
            if (item.getTotalPrice() == null) {
                return;
            }
            if (item.getTaxPercent() != null) {
                item.setTaxPrice(MoneyUtils.priceMultiplyPercent(item.getTotalPrice(), item.getTaxPercent()));
            }
        }));
    }

    private void updateSaleOrderItemList(Long id, List<ErpSaleOrderItemDO> newList) {
        // 第一步，对比新老数据，获得添加、修改、删除的列表
        List<ErpSaleOrderItemDO> oldList = saleOrderItemMapper.selectListByOrderId(id);
        List<List<ErpSaleOrderItemDO>> diffList = diffList(oldList, newList, // id 不同，就认为是不同的记录
                (oldVal, newVal) -> oldVal.getId().equals(newVal.getId()));

        // 第二步，批量添加、修改、删除
        if (CollUtil.isNotEmpty(diffList.get(0))) {
            diffList.get(0).forEach(o -> o.setOrderId(id));
            saleOrderItemMapper.insertBatch(diffList.get(0));
        }
        if (CollUtil.isNotEmpty(diffList.get(1))) {
            saleOrderItemMapper.updateBatch(diffList.get(1));
        }
        if (CollUtil.isNotEmpty(diffList.get(2))) {
            saleOrderItemMapper.deleteByIds(convertList(diffList.get(2), ErpSaleOrderItemDO::getId));
        }
    }

    @Override
    public void updateSaleOrderOutCount(Long id, Map<Long, BigDecimal> outCountMap) {
        List<ErpSaleOrderItemDO> orderItems = saleOrderItemMapper.selectListByOrderId(id);
        // 1. 更新每个销售订单项
        orderItems.forEach(item -> {
            BigDecimal outCount = outCountMap.getOrDefault(item.getId(), BigDecimal.ZERO);
            if (item.getOutCount().equals(outCount)) {
                return;
            }
            if (outCount.compareTo(item.getCount()) > 0) {
                throw exception(SALE_ORDER_ITEM_OUT_FAIL_PRODUCT_EXCEED,
                        "产品ID:" + item.getProductId(), item.getCount());
            }
            saleOrderItemMapper.updateById(new ErpSaleOrderItemDO().setId(item.getId()).setOutCount(outCount));
        });
        // 2. 更新销售订单
        BigDecimal totalOutCount = getSumValue(outCountMap.values(), value -> value, BigDecimal::add, BigDecimal.ZERO);
        saleOrderMapper.updateById(new ErpSaleOrderDO().setId(id).setOutCount(totalOutCount));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteSaleOrder(List<Long> ids) {
        // 1. 校验状态：只有未提交或已驳回的销售订单才能删除
        List<ErpSaleOrderDO> saleOrders = saleOrderMapper.selectByIds(ids);
        if (CollUtil.isEmpty(saleOrders)) {
            return;
        }
        saleOrders.forEach(saleOrder -> {
            if (!ErpAuditStatus.DRAFT.getStatus().equals(saleOrder.getStatus())
                    && !ErpAuditStatus.REJECT.getStatus().equals(saleOrder.getStatus())) {
                throw exception(SALE_ORDER_DELETE_FAIL_APPROVE, saleOrder.getNo());
            }
        });

        // 2. 遍历删除，并记录操作日志
        saleOrders.forEach(saleOrder -> {
            // 2.1 删除附件
            storageAttachmentApi.deleteAttachmentsByRecord("erp_sale_order", saleOrder.getId());
            // 2.2 删除订单
            saleOrderMapper.deleteById(saleOrder.getId());
            // 2.3 删除订单项
            saleOrderItemMapper.deleteByOrderId(saleOrder.getId());
        });
    }

    private ErpSaleOrderDO validateSaleOrderExists(Long id) {
        ErpSaleOrderDO saleOrder = saleOrderMapper.selectById(id);
        if (saleOrder == null) {
            throw exception(SALE_ORDER_NOT_EXISTS);
        }
        return saleOrder;
    }

    @Override
    public ErpSaleOrderDO getSaleOrder(Long id) {
        return saleOrderMapper.selectById(id);
    }

    @Override
    public ErpSaleOrderDO validateSaleOrder(Long id) {
        ErpSaleOrderDO saleOrder = validateSaleOrderExists(id);
        if (ObjectUtil.notEqual(saleOrder.getStatus(), ErpAuditStatus.APPROVE.getStatus())) {
            throw exception(SALE_ORDER_NOT_APPROVE);
        }
        return saleOrder;
    }

    @Override
    public PageResult<ErpSaleOrderDO> getSaleOrderPage(ErpSaleOrderPageReqVO pageReqVO) {
        List<Long> permittedCustomerIds = customerApi.getPermittedCustomerIds();
        return saleOrderMapper.selectPage(pageReqVO, permittedCustomerIds);
    }

    // ==================== 订单项 ====================

    @Override
    public List<ErpSaleOrderItemDO> getSaleOrderItemListByOrderId(Long orderId) {
        return saleOrderItemMapper.selectListByOrderId(orderId);
    }

    @Override
    public List<ErpSaleOrderItemDO> getSaleOrderItemListByOrderIds(Collection<Long> orderIds) {
        if (CollUtil.isEmpty(orderIds)) {
            return Collections.emptyList();
        }
        return saleOrderItemMapper.selectListByOrderIds(orderIds);
    }

    @Override
    public void updateSaleOrderOutStatus(Long orderId) {
        // 1. 获取销售订单
        ErpSaleOrderDO order = validateSaleOrderExists(orderId);
        // 2. 获取销售订单明细
        List<ErpSaleOrderItemDO> items = saleOrderItemMapper.selectListByOrderId(orderId);
        if (CollUtil.isEmpty(items)) {
            return;
        }
        // 3. 计算出库状态
        int outStatus = calculateOutStatus(items);
        // 4. 更新销售订单出库状态
        saleOrderMapper.updateById(new ErpSaleOrderDO()
                .setId(orderId).setOutStatus(outStatus));
    }

    /**
     * 计算出库状态
     *
     * @param items 销售订单明细列表
     * @return 出库状态
     */
    private int calculateOutStatus(List<ErpSaleOrderItemDO> items) {
        boolean allOut = true;
        boolean anyOut = false;

        for (ErpSaleOrderItemDO item : items) {
            BigDecimal count = item.getCount() != null ? item.getCount() : BigDecimal.ZERO;
            BigDecimal outCount = item.getOutCount() != null ? item.getOutCount() : BigDecimal.ZERO;

            if (outCount.compareTo(BigDecimal.ZERO) > 0) {
                anyOut = true;
            }
            if (outCount.compareTo(count) < 0) {
                allOut = false;
            }
        }

        if (allOut) {
            return ErpSaleOrderOutStatusEnum.ALL_OUT.getStatus();
        } else if (anyOut) {
            return ErpSaleOrderOutStatusEnum.PART_OUT.getStatus();
        } else {
            return ErpSaleOrderOutStatusEnum.NOT_OUT.getStatus();
        }
    }

}