yudao-module-erp/src/main/java/cn/iocoder/yudao/module/erp/service/purchase/ErpPurchaseRequestServiceImpl.java
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package cn.iocoder.yudao.module.erp.service.purchase;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.StrUtil;
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.erp.controller.admin.purchase.vo.request.ErpPurchaseRequestPageReqVO;
import cn.iocoder.yudao.module.erp.controller.admin.purchase.vo.request.ErpPurchaseRequestSaveReqVO;
import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseOrderDO;
import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseOrderItemDO;
import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseRequestDO;
import cn.iocoder.yudao.module.erp.dal.dataobject.purchase.ErpPurchaseRequestItemDO;
import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseOrderItemMapper;
import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseOrderMapper;
import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseRequestItemMapper;
import cn.iocoder.yudao.module.erp.dal.mysql.purchase.ErpPurchaseRequestMapper;
import cn.iocoder.yudao.module.erp.dal.redis.no.ErpNoRedisDAO;
import cn.iocoder.yudao.module.erp.enums.ErpAuditStatus;
import cn.iocoder.yudao.module.erp.enums.ErpPurchaseRequestStatusEnum;
import cn.iocoder.yudao.module.system.api.approval.ApprovalConfigApi;
import cn.iocoder.yudao.module.system.api.dept.DeptApi;
import cn.iocoder.yudao.module.system.api.storage.StorageAttachmentApi;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import jakarta.annotation.Resource;
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.util.*;
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.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
import static cn.iocoder.yudao.module.erp.enums.ErrorCodeConstants.*;
/**
 * ERP é‡‡è´­ç”³è¯· Service å®žçŽ°ç±»
 */
@Service
@Validated
@Slf4j
public class ErpPurchaseRequestServiceImpl implements ErpPurchaseRequestService {
    /**
     * é€šç”¨å®¡æ‰¹é…ç½®çš„业务类型编码(对应 system_approval_config.biz_type)
     */
    private static final String PURCHASE_REQUEST_APPROVE_BIZ_TYPE = "purchase_request_approve";
    @Resource
    private ErpPurchaseRequestMapper purchaseRequestMapper;
    @Resource
    private ErpPurchaseRequestItemMapper purchaseRequestItemMapper;
    @Resource
    private ErpPurchaseOrderMapper purchaseOrderMapper;
    @Resource
    private ErpPurchaseOrderItemMapper purchaseOrderItemMapper;
    @Resource
    private ErpNoRedisDAO noRedisDAO;
    @Resource
    private ErpSupplierService supplierService;
    @Resource
    private ApprovalConfigApi approvalConfigApi;
    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private DeptApi deptApi;
    @Resource
    private StorageAttachmentApi storageAttachmentApi;
    @Override
    @Transactional(rollbackFor = Exception.class)
    public Long createPurchaseRequest(ErpPurchaseRequestSaveReqVO createReqVO) {
        // 1. æ ¡éªŒè®¢å•项的有效性
        List<ErpPurchaseRequestItemDO> requestItems = validatePurchaseRequestItems(createReqVO.getItems());
        // 2. æ ¡éªŒä¾›åº”商(如果指定)
        if (createReqVO.getSupplierId() != null) {
            supplierService.validateSupplier(createReqVO.getSupplierId());
        }
        // 3. ç”Ÿæˆç”³è¯·å•号
        String no = noRedisDAO.generate(ErpNoRedisDAO.PURCHASE_REQUEST_NO_PREFIX);
        if (purchaseRequestMapper.selectByNo(no) != null) {
            throw exception(PURCHASE_REQUEST_NO_EXISTS);
        }
        // 4. èŽ·å–å½“å‰ç”¨æˆ·ä¿¡æ¯
        Long userId = Long.parseLong(getCurrentUserId());
        AdminUserRespDTO user = adminUserApi.getUser(userId);
        Long deptId = user != null ? user.getDeptId() : null;
        // 5. æ’入申请单
        ErpPurchaseRequestDO purchaseRequest = BeanUtils.toBean(createReqVO, ErpPurchaseRequestDO.class, req -> req
                .setNo(no)
                .setStatus(ErpPurchaseRequestStatusEnum.DRAFT.getStatus())
                .setRequestUserId(userId)
                .setRequestDeptId(deptId));
        calculateTotalPrice(purchaseRequest, requestItems);
        purchaseRequestMapper.insert(purchaseRequest);
        // 6. ç»‘定附件
        storageAttachmentApi.bindAttachments("file", "erp_purchase_request",
                purchaseRequest.getId(), createReqVO.getBlobIds());
        // 7. æ’入申请明细
        requestItems.forEach(o -> o.setRequestId(purchaseRequest.getId()));
        purchaseRequestItemMapper.insertBatch(requestItems);
        return purchaseRequest.getId();
    }
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updatePurchaseRequest(ErpPurchaseRequestSaveReqVO updateReqVO) {
        // 1. æ ¡éªŒå­˜åœ¨ + è‰ç¨¿çŠ¶æ€
        ErpPurchaseRequestDO purchaseRequest = validatePurchaseRequestCanModify(updateReqVO.getId());
        // 2. æ ¡éªŒä¾›åº”商(如果指定)
        if (updateReqVO.getSupplierId() != null) {
            supplierService.validateSupplier(updateReqVO.getSupplierId());
        }
        // 3. æ ¡éªŒè®¢å•项的有效性
        List<ErpPurchaseRequestItemDO> requestItems = validatePurchaseRequestItems(updateReqVO.getItems());
        // 4. æ›´æ–°ç”³è¯·å•
        ErpPurchaseRequestDO updateObj = BeanUtils.toBean(updateReqVO, ErpPurchaseRequestDO.class);
        calculateTotalPrice(updateObj, requestItems);
        purchaseRequestMapper.updateById(updateObj);
        // 5. æ›´æ–°ç”³è¯·æ˜Žç»†
        updatePurchaseRequestItemList(updateReqVO.getId(), requestItems);
        // 6. æ›´æ–°é™„ä»¶
        storageAttachmentApi.updateAttachments("file", "erp_purchase_request", updateReqVO.getId(), updateReqVO.getBlobIds());
    }
    private void calculateTotalPrice(ErpPurchaseRequestDO purchaseRequest, List<ErpPurchaseRequestItemDO> requestItems) {
        purchaseRequest.setTotalCount(getSumValue(requestItems, ErpPurchaseRequestItemDO::getCount, BigDecimal::add));
        purchaseRequest.setTotalProductPrice(getSumValue(requestItems, ErpPurchaseRequestItemDO::getTotalPrice, BigDecimal::add, BigDecimal.ZERO));
        purchaseRequest.setTotalTaxPrice(getSumValue(requestItems, ErpPurchaseRequestItemDO::getTaxPrice, BigDecimal::add, BigDecimal.ZERO));
        purchaseRequest.setTotalPrice(purchaseRequest.getTotalProductPrice().add(purchaseRequest.getTotalTaxPrice()));
        // è®¡ç®—优惠价格
        if (purchaseRequest.getDiscountPercent() == null) {
            purchaseRequest.setDiscountPercent(BigDecimal.ZERO);
        }
        purchaseRequest.setDiscountPrice(MoneyUtils.priceMultiplyPercent(purchaseRequest.getTotalPrice(), purchaseRequest.getDiscountPercent()));
        purchaseRequest.setTotalPrice(purchaseRequest.getTotalPrice().subtract(purchaseRequest.getDiscountPrice()));
    }
    private List<ErpPurchaseRequestItemDO> validatePurchaseRequestItems(List<ErpPurchaseRequestSaveReqVO.Item> list) {
        return convertList(list, o -> BeanUtils.toBean(o, ErpPurchaseRequestItemDO.class, item -> {
            if (item.getProductPrice() != null && item.getCount() != null) {
                item.setTotalPrice(MoneyUtils.priceMultiply(item.getProductPrice(), item.getCount()));
                if (item.getTaxPercent() != null) {
                    item.setTaxPrice(MoneyUtils.priceMultiplyPercent(item.getTotalPrice(), item.getTaxPercent()));
                }
            }
        }));
    }
    private void updatePurchaseRequestItemList(Long id, List<ErpPurchaseRequestItemDO> newList) {
        List<ErpPurchaseRequestItemDO> oldList = purchaseRequestItemMapper.selectListByRequestId(id);
        List<List<ErpPurchaseRequestItemDO>> diffList = diffList(oldList, newList,
                (oldVal, newVal) -> oldVal.getId().equals(newVal.getId()));
        if (CollUtil.isNotEmpty(diffList.get(0))) {
            diffList.get(0).forEach(o -> o.setRequestId(id));
            purchaseRequestItemMapper.insertBatch(diffList.get(0));
        }
        if (CollUtil.isNotEmpty(diffList.get(1))) {
            purchaseRequestItemMapper.updateBatch(diffList.get(1));
        }
        if (CollUtil.isNotEmpty(diffList.get(2))) {
            purchaseRequestItemMapper.deleteByIds(convertList(diffList.get(2), ErpPurchaseRequestItemDO::getId));
        }
    }
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deletePurchaseRequest(List<Long> ids) {
        List<ErpPurchaseRequestDO> purchaseRequests = purchaseRequestMapper.selectRequestListByIds(ids);
        if (CollUtil.isEmpty(purchaseRequests)) {
            return;
        }
        purchaseRequests.forEach(purchaseRequest -> {
            Integer status = purchaseRequest.getStatus();
            if (!ErpPurchaseRequestStatusEnum.DRAFT.getStatus().equals(status)
                    && !ErpPurchaseRequestStatusEnum.REJECT.getStatus().equals(status)) {
                throw exception(PURCHASE_REQUEST_DELETE_FAIL_NOT_DRAFT, purchaseRequest.getNo());
            }
        });
        purchaseRequests.forEach(purchaseRequest -> {
            storageAttachmentApi.deleteAttachmentsByRecord("erp_purchase_request", purchaseRequest.getId());
            purchaseRequestMapper.deleteById(purchaseRequest.getId());
            purchaseRequestItemMapper.deleteByRequestId(purchaseRequest.getId());
        });
    }
    @Override
    public ErpPurchaseRequestDO getPurchaseRequest(Long id) {
        return purchaseRequestMapper.selectById(id);
    }
    @Override
    public PageResult<ErpPurchaseRequestDO> getPurchaseRequestPage(ErpPurchaseRequestPageReqVO pageReqVO) {
        return purchaseRequestMapper.selectPage(pageReqVO);
    }
    @Override
    public List<ErpPurchaseRequestItemDO> getPurchaseRequestItemListByRequestId(Long requestId) {
        return purchaseRequestItemMapper.selectListByRequestId(requestId);
    }
    @Override
    public List<ErpPurchaseRequestItemDO> getPurchaseRequestItemListByRequestIds(Collection<Long> requestIds) {
        if (CollUtil.isEmpty(requestIds)) {
            return Collections.emptyList();
        }
        return purchaseRequestItemMapper.selectListByRequestIds(requestIds);
    }
    @Override
    public List<ErpPurchaseRequestDO> getPurchaseRequestList(List<Long> ids) {
        if (CollUtil.isEmpty(ids)) {
            return Collections.emptyList();
        }
        return purchaseRequestMapper.selectRequestListByIds(ids);
    }
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void submitPurchaseRequest(Long id) {
        // 1. æ ¡éªŒå­˜åœ¨ + å¯æäº¤çŠ¶æ€ï¼ˆæœªæäº¤ / å®¡æ ¸ä¸é€šè¿‡ï¼‰
        ErpPurchaseRequestDO purchaseRequest = validatePurchaseRequestExists(id);
        if (!ErpPurchaseRequestStatusEnum.DRAFT.getStatus().equals(purchaseRequest.getStatus())
                && !ErpPurchaseRequestStatusEnum.REJECT.getStatus().equals(purchaseRequest.getStatus())) {
            throw exception(PURCHASE_REQUEST_SUBMIT_FAIL_NOT_ALLOWED);
        }
        // 2. æ ¡éªŒæ˜¯å¦æœ‰æ˜Žç»†
        List<ErpPurchaseRequestItemDO> items = purchaseRequestItemMapper.selectListByRequestId(id);
        if (CollUtil.isEmpty(items)) {
            throw exception(PURCHASE_REQUEST_ITEM_EMPTY);
        }
        // 3. æ ¡éªŒå®¡æ‰¹é…ç½®å·²å¯ç”¨ä¸”配置了有效审批人
        approvalConfigApi.validateApprovalEnabledAndGetApprovers(PURCHASE_REQUEST_APPROVE_BIZ_TYPE);
        // 4. çŠ¶æ€ç½®ä¸ºå®¡æ‰¹ä¸­ï¼Œå¹¶æ¸…ç©ºä¸Šä¸€è½®å®¡æ ¸ç»“æžœ
        purchaseRequestMapper.submitAndResetAuditInfo(id, ErpPurchaseRequestStatusEnum.PROCESS.getStatus());
    }
    @Override
    public Set<Long> getPurchaseRequestApproverUserIds() {
        return approvalConfigApi.getApproverUserIds(PURCHASE_REQUEST_APPROVE_BIZ_TYPE);
    }
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void auditPurchaseRequest(Long id, Boolean pass, String reviewRemark) {
        // 1. æ ¡éªŒå­˜åœ¨
        ErpPurchaseRequestDO purchaseRequest = validatePurchaseRequestExists(id);
        // 2. æ ¡éªŒå¤„于审批中状态
        if (!ErpPurchaseRequestStatusEnum.PROCESS.getStatus().equals(purchaseRequest.getStatus())) {
            throw exception(PURCHASE_REQUEST_AUDIT_FAIL_NOT_PROCESS);
        }
        // 3. æ ¡éªŒå½“前登录用户是该业务类型的审批人(或签:任一人均可审核)
        Long userId = getLoginUserId();
        approvalConfigApi.validateApprover(PURCHASE_REQUEST_APPROVE_BIZ_TYPE, userId);
        // 4. å®¡æ ¸ä¸é€šè¿‡ï¼šå¿…须填写原因,退回申请人修改后可重新提交
        if (!Boolean.TRUE.equals(pass)) {
            if (StrUtil.isBlank(reviewRemark)) {
                throw exception(PURCHASE_REQUEST_AUDIT_REJECT_REASON_REQUIRED);
            }
            purchaseRequestMapper.auditPurchaseRequest(id, ErpPurchaseRequestStatusEnum.REJECT.getStatus(),
                    userId, getUserNickname(userId), reviewRemark);
            return;
        }
        // 5. å®¡æ ¸é€šè¿‡ï¼šè®°å½•审核人与审核意见
        purchaseRequestMapper.auditPurchaseRequest(id, ErpPurchaseRequestStatusEnum.APPROVE.getStatus(),
                userId, getUserNickname(userId), reviewRemark);
        // 6. å®¡æ ¸é€šè¿‡ä¸”有供应商、未生成订单时,自动生成采购订单
        if (purchaseRequest.getSupplierId() != null && purchaseRequest.getOrderId() == null) {
            try {
                Long orderId = doGeneratePurchaseOrder(purchaseRequest);
                log.info("[auditPurchaseRequest] é‡‡è´­ç”³è¯·({}) è‡ªåŠ¨ç”Ÿæˆé‡‡è´­è®¢å•({})", id, orderId);
            } catch (Exception e) {
                // ä¸æŠ›å‡ºå¼‚常,避免影响审核结果落库;生成失败可由用户手动触发
                log.error("[auditPurchaseRequest] é‡‡è´­ç”³è¯·({}) è‡ªåŠ¨ç”Ÿæˆé‡‡è´­è®¢å•å¤±è´¥", id, e);
            }
        }
    }
    /**
     * èŽ·å–ç”¨æˆ·æ˜µç§°
     *
     * @param userId ç”¨æˆ·ç¼–号
     * @return æ˜µç§°ï¼Œç”¨æˆ·ä¸å­˜åœ¨æ—¶è¿”回 null
     */
    private String getUserNickname(Long userId) {
        if (userId == null) {
            return null;
        }
        AdminUserRespDTO user = adminUserApi.getUser(userId);
        return user == null ? null : user.getNickname();
    }
    @Override
    @Transactional(rollbackFor = Exception.class)
    public Long generatePurchaseOrder(Long id, Long supplierId) {
        // 1. æ ¡éªŒå­˜åœ¨ + å®¡æ ¸é€šè¿‡çŠ¶æ€
        ErpPurchaseRequestDO purchaseRequest = validatePurchaseRequestExists(id);
        if (!ErpPurchaseRequestStatusEnum.APPROVE.getStatus().equals(purchaseRequest.getStatus())) {
            throw exception(PURCHASE_REQUEST_NOT_APPROVE);
        }
        // 2. æ ¡éªŒæ˜¯å¦å·²ç”Ÿæˆè®¢å•
        if (purchaseRequest.getOrderId() != null) {
            throw exception(PURCHASE_REQUEST_ORDER_EXISTS);
        }
        // 3. æ ¡éªŒä¾›åº”商
        supplierService.validateSupplier(supplierId);
        // 4. è®¾ç½®ä¾›åº”商并生成订单
        purchaseRequest.setSupplierId(supplierId);
        return doGeneratePurchaseOrder(purchaseRequest);
    }
    /**
     * æ‰§è¡Œç”Ÿæˆé‡‡è´­è®¢å•
     *
     * @param purchaseRequest é‡‡è´­ç”³è¯·ï¼ˆéœ€åŒ…含 supplierId)
     * @return é‡‡è´­è®¢å• ID
     */
    private Long doGeneratePurchaseOrder(ErpPurchaseRequestDO purchaseRequest) {
        Long id = purchaseRequest.getId();
        // 1. èŽ·å–ç”³è¯·æ˜Žç»†
        List<ErpPurchaseRequestItemDO> requestItems = purchaseRequestItemMapper.selectListByRequestId(id);
        if (CollUtil.isEmpty(requestItems)) {
            throw exception(PURCHASE_REQUEST_NOT_EXISTS);
        }
        requestItems.forEach(item -> {
            if (item.getProductPrice() == null || item.getTotalPrice() == null || item.getTaxPrice() == null) {
                throw exception(PURCHASE_REQUEST_ITEM_PRICE_EMPTY, item.getId());
            }
        });
        // 2. ç”Ÿæˆé‡‡è´­è®¢å•号
        String orderNo = noRedisDAO.generate(ErpNoRedisDAO.PURCHASE_ORDER_NO_PREFIX);
        if (purchaseOrderMapper.selectByNo(orderNo) != null) {
            throw exception(PURCHASE_ORDER_NO_EXISTS);
        }
        // 3. åˆ›å»ºé‡‡è´­è®¢å•
        ErpPurchaseOrderDO purchaseOrder = new ErpPurchaseOrderDO();
        purchaseOrder.setNo(orderNo);
        purchaseOrder.setStatus(ErpAuditStatus.APPROVE.getStatus()); // é‡‡è´­è®¢å•直接为已审核状态
        purchaseOrder.setSupplierId(purchaseRequest.getSupplierId());
        purchaseOrder.setOrderTime(purchaseRequest.getRequestTime());
        purchaseOrder.setTotalCount(purchaseRequest.getTotalCount());
        purchaseOrder.setTotalPrice(purchaseRequest.getTotalPrice());
        purchaseOrder.setTotalProductPrice(purchaseRequest.getTotalProductPrice());
        purchaseOrder.setTotalTaxPrice(purchaseRequest.getTotalTaxPrice());
        purchaseOrder.setDiscountPercent(purchaseRequest.getDiscountPercent());
        purchaseOrder.setDiscountPrice(purchaseRequest.getDiscountPrice());
        purchaseOrder.setDepositPrice(purchaseRequest.getDepositPrice() != null ? purchaseRequest.getDepositPrice() : BigDecimal.ZERO);
        purchaseOrder.setRemark(purchaseRequest.getRemark());
        purchaseOrder.setInCount(BigDecimal.ZERO);
        purchaseOrder.setInStatus(0);
        purchaseOrderMapper.insert(purchaseOrder);
        // 4. åˆ›å»ºé‡‡è´­è®¢å•明细
        List<ErpPurchaseOrderItemDO> orderItems = convertList(requestItems, item -> {
            ErpPurchaseOrderItemDO orderItem = new ErpPurchaseOrderItemDO();
            orderItem.setOrderId(purchaseOrder.getId());
            orderItem.setRequestItemId(item.getId()); // å…³è”采购申请明细
            orderItem.setProductId(item.getProductId());
            orderItem.setProductUnitId(item.getProductUnitId());
            orderItem.setProductPrice(item.getProductPrice());
            orderItem.setCount(item.getCount());
            orderItem.setTotalPrice(item.getTotalPrice());
            orderItem.setTaxPercent(item.getTaxPercent());
            orderItem.setTaxPrice(item.getTaxPrice());
            orderItem.setRemark(item.getRemark());
            orderItem.setInCount(BigDecimal.ZERO);
            orderItem.setQcCheckFlag(item.getQcCheckFlag() != null ? item.getQcCheckFlag() : false);
            return orderItem;
        });
        purchaseOrderItemMapper.insertBatch(orderItems);
        // 5. æ›´æ–°é‡‡è´­ç”³è¯·çš„订单信息
        purchaseRequestMapper.updateById(new ErpPurchaseRequestDO()
                .setId(id)
                .setOrderId(purchaseOrder.getId())
                .setOrderNo(orderNo));
        return purchaseOrder.getId();
    }
    private ErpPurchaseRequestDO validatePurchaseRequestExists(Long id) {
        ErpPurchaseRequestDO purchaseRequest = purchaseRequestMapper.selectById(id);
        if (purchaseRequest == null) {
            throw exception(PURCHASE_REQUEST_NOT_EXISTS);
        }
        return purchaseRequest;
    }
    private ErpPurchaseRequestDO validatePurchaseRequestCanModify(Long id) {
        ErpPurchaseRequestDO purchaseRequest = validatePurchaseRequestExists(id);
        Integer status = purchaseRequest.getStatus();
        if (!ErpPurchaseRequestStatusEnum.DRAFT.getStatus().equals(status)
                && !ErpPurchaseRequestStatusEnum.REJECT.getStatus().equals(status)) {
            throw exception(PURCHASE_REQUEST_UPDATE_FAIL_NOT_DRAFT, purchaseRequest.getNo());
        }
        return purchaseRequest;
    }
    private String getCurrentUserId() {
        return cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId().toString();
    }
}