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package cn.iocoder.yudao.module.crm.service.contract;
 
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.extra.spring.SpringUtil;
import cn.iocoder.yudao.framework.common.exception.ServiceException;
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.framework.common.util.object.ObjectUtils;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractImportExcelVO;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractImportReqVO;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractImportRespVO;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractPageReqVO;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractSaveReqVO;
import cn.iocoder.yudao.module.crm.controller.admin.contract.vo.contract.CrmContractTransferReqVO;
import cn.iocoder.yudao.module.crm.dal.dataobject.contract.CrmContractConfigDO;
import cn.iocoder.yudao.module.crm.dal.dataobject.contract.CrmContractDO;
import cn.iocoder.yudao.module.crm.dal.dataobject.contract.CrmContractProductDO;
import cn.iocoder.yudao.module.crm.dal.dataobject.customer.CrmCustomerDO;
import cn.iocoder.yudao.module.crm.dal.dataobject.quotation.CrmSaleQuotationDO;
import cn.iocoder.yudao.module.crm.dal.dataobject.quotation.CrmSaleQuotationProductDO;
import cn.iocoder.yudao.module.crm.dal.mysql.contract.CrmContractMapper;
import cn.iocoder.yudao.module.crm.dal.mysql.contract.CrmContractProductMapper;
import cn.iocoder.yudao.module.crm.dal.mysql.customer.CrmCustomerMapper;
import cn.iocoder.yudao.module.crm.dal.redis.no.CrmNoRedisDAO;
import cn.iocoder.yudao.module.crm.enums.common.CrmAuditStatusEnum;
import cn.iocoder.yudao.module.crm.enums.common.CrmBizTypeEnum;
import cn.iocoder.yudao.module.crm.enums.permission.CrmPermissionLevelEnum;
import cn.iocoder.yudao.module.crm.framework.permission.core.annotations.CrmPermission;
import cn.iocoder.yudao.module.crm.service.business.CrmBusinessService;
import cn.iocoder.yudao.module.crm.service.contact.CrmContactService;
import cn.iocoder.yudao.module.crm.service.customer.CrmCustomerService;
import cn.iocoder.yudao.module.crm.service.permission.CrmPermissionService;
import cn.iocoder.yudao.module.crm.service.permission.bo.CrmPermissionCreateReqBO;
import cn.iocoder.yudao.module.crm.service.permission.bo.CrmPermissionTransferReqBO;
import cn.iocoder.yudao.module.crm.service.quotation.CrmSaleQuotationService;
import cn.iocoder.yudao.module.crm.service.receivable.CrmReceivableService;
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.enums.task.BpmTaskStatusEnum;
import cn.iocoder.yudao.module.erp.api.sale.ErpSaleOrderApi;
import cn.iocoder.yudao.module.erp.api.sale.dto.ErpSaleOrderCreateReqDTO;
import cn.iocoder.yudao.module.erp.api.sale.dto.ErpSaleOrderRespDTO;
import cn.iocoder.yudao.module.mdm.api.item.MdmItemApi;
import cn.iocoder.yudao.module.mdm.api.item.dto.MdmItemRespDTO;
import cn.iocoder.yudao.module.system.api.approval.ApprovalConfigApi;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import com.mzt.logapi.context.LogRecordContext;
import com.mzt.logapi.service.impl.DiffParseFunction;
import com.mzt.logapi.starter.annotation.LogRecord;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;
 
import java.math.BigDecimal;
import java.time.LocalDateTime;
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 java.util.Set;
 
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.crm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.crm.enums.LogRecordConstants.*;
import static cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
 
/**
 * CRM 合同 Service 实现类
 *
 * @author dhb52
 */
@Service
@Validated
@Slf4j
public class CrmContractServiceImpl implements CrmContractService {
 
    /**
     * CRM 合同审批的业务类型编码
     *
     * 与 system_approval_config.biz_type 对应,审批人在「系统管理 - 审批配置」中维护。
     */
    private static final String CONTRACT_APPROVE_BIZ_TYPE = "contract_approve";
 
    /**
     * CRM 合同审批的 BPM 流程定义 Key
     */
    private static final String CONTRACT_APPROVE_PROCESS_KEY = "contract_approve";
 
    @Resource
    private CrmContractMapper contractMapper;
    @Resource
    private CrmContractProductMapper contractProductMapper;
    @Resource
    private CrmCustomerMapper customerMapper;
 
    @Resource
    private CrmNoRedisDAO noRedisDAO;
 
    @Resource
    private CrmPermissionService crmPermissionService;
    @Resource
    private CrmCustomerService customerService;
    @Resource
    private CrmBusinessService businessService;
    @Resource
    private CrmContactService contactService;
    @Resource
    private CrmContractConfigService contractConfigService;
    @Resource
    @Lazy // 延迟加载,避免循环依赖
    private CrmReceivableService receivableService;
    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private ApprovalConfigApi approvalConfigApi;
    @Resource
    private BpmProcessInstanceApi bpmProcessInstanceApi;
    @Resource
    private ErpSaleOrderApi saleOrderApi;
    @Resource
    private MdmItemApi mdmItemApi;
    @Resource
    @Lazy // 延迟加载,避免循环依赖(quotation 内部引用了 contractService)
    private CrmSaleQuotationService crmSaleQuotationService;
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_CREATE_SUB_TYPE, bizNo = "{{#contract.id}}",
            success = CRM_CONTRACT_CREATE_SUCCESS)
    public Long createContract(CrmContractSaveReqVO createReqVO, Long userId) {
        // 1.1 校验产品项的有效性
        List<CrmContractProductDO> contractProducts = validateContractProducts(createReqVO.getProducts());
        // 1.2 校验关联字段
        validateRelationDataExists(createReqVO);
        // 1.3 生成序号
        String no = noRedisDAO.generate(CrmNoRedisDAO.CONTRACT_NO_PREFIX);
        if (contractMapper.selectByNo(no) != null) {
            throw exception(CONTRACT_NO_EXISTS);
        }
 
        // 2.1 插入合同
        CrmContractDO contract = BeanUtils.toBean(createReqVO, CrmContractDO.class)
                .setNo(no)
                .setAuditStatus(CrmAuditStatusEnum.DRAFT.getStatus()); // 默认为未提交状态
        calculateTotalPrice(contract, contractProducts);
        contractMapper.insert(contract);
        // 2.2 插入合同关联商品
        if (CollUtil.isNotEmpty(contractProducts)) {
            contractProducts.forEach(item -> item.setContractId(contract.getId()));
            contractProductMapper.insertBatch(contractProducts);
        }
 
        // 3. 创建数据权限
        crmPermissionService.createPermission(new CrmPermissionCreateReqBO().setUserId(contract.getOwnerUserId())
                .setBizType(CrmBizTypeEnum.CRM_CONTRACT.getType()).setBizId(contract.getId())
                .setLevel(CrmPermissionLevelEnum.OWNER.getLevel()));
        // 3.1 客户负责人自动拥有该合同的读写权限
        crmPermissionService.createPermissionForCustomerOwner(CrmBizTypeEnum.CRM_CONTRACT.getType(),
                contract.getId(), contract.getCustomerId(), contract.getOwnerUserId());
 
        // 4. 记录操作日志上下文
        LogRecordContext.putVariable("contract", contract);
        return contract.getId();
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_UPDATE_SUB_TYPE, bizNo = "{{#updateReqVO.id}}",
            success = CRM_CONTRACT_UPDATE_SUCCESS)
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#updateReqVO.id", level = CrmPermissionLevelEnum.WRITE)
    public void updateContract(CrmContractSaveReqVO updateReqVO) {
        Assert.notNull(updateReqVO.getId(), "合同编号不能为空");
        updateReqVO.setOwnerUserId(null); // 不允许更新的字段
        // 1.1 校验存在
        CrmContractDO oldContract = validateContractExists(updateReqVO.getId());
        // 1.2 只有草稿、审核不通过,可以编辑;
        if (!ObjectUtils.equalsAny(oldContract.getAuditStatus(), CrmAuditStatusEnum.DRAFT.getStatus(),
                CrmAuditStatusEnum.REJECT.getStatus())) {
            throw exception(CONTRACT_UPDATE_FAIL_NOT_DRAFT);
        }
        // 1.3 校验产品项的有效性
        List<CrmContractProductDO> contractProducts = validateContractProducts(updateReqVO.getProducts());
        // 1.4 校验关联字段
        validateRelationDataExists(updateReqVO);
 
        // 2.1 更新合同
        CrmContractDO updateObj = BeanUtils.toBean(updateReqVO, CrmContractDO.class);
        calculateTotalPrice(updateObj, contractProducts);
        contractMapper.updateById(updateObj);
        // 2.2 更新合同关联商品
        updateContractProduct(updateReqVO.getId(), contractProducts);
 
        // 3. 记录操作日志上下文
        updateReqVO.setOwnerUserId(oldContract.getOwnerUserId()); // 避免操作日志出现“删除负责人”的情况
        LogRecordContext.putVariable(DiffParseFunction.OLD_OBJECT, BeanUtils.toBean(oldContract, CrmContractSaveReqVO.class));
        LogRecordContext.putVariable("contractName", oldContract.getName());
    }
 
    private void updateContractProduct(Long id, List<CrmContractProductDO> newList) {
        List<CrmContractProductDO> oldList = contractProductMapper.selectListByContractId(id);
        List<List<CrmContractProductDO>> diffList = diffList(oldList, newList, // id 不同,就认为是不同的记录
                (oldVal, newVal) -> oldVal.getId().equals(newVal.getId()));
        if (CollUtil.isNotEmpty(diffList.get(0))) {
            diffList.get(0).forEach(o -> o.setContractId(id));
            contractProductMapper.insertBatch(diffList.get(0));
        }
        if (CollUtil.isNotEmpty(diffList.get(1))) {
            contractProductMapper.updateBatch(diffList.get(1));
        }
        if (CollUtil.isNotEmpty(diffList.get(2))) {
            contractProductMapper.deleteByIds(convertSet(diffList.get(2), CrmContractProductDO::getId));
        }
    }
 
    /**
     * 校验关联数据是否存在
     *
     * @param reqVO 请求
     */
    private void validateRelationDataExists(CrmContractSaveReqVO reqVO) {
        // 1. 校验客户
        if (reqVO.getCustomerId() != null) {
            customerService.validateCustomer(reqVO.getCustomerId());
        }
        // 2. 校验负责人
        if (reqVO.getOwnerUserId() != null) {
            adminUserApi.validateUser(reqVO.getOwnerUserId());
        }
        // 3. 如果有关联商机,则需要校验存在
        if (reqVO.getBusinessId() != null) {
            businessService.validateBusiness(reqVO.getBusinessId());
        }
        // 4. 校验签约相关字段
        if (reqVO.getSignContactId() != null) {
            contactService.validateContact(reqVO.getSignContactId());
        }
        if (reqVO.getSignUserId() != null) {
            adminUserApi.validateUser(reqVO.getSignUserId());
        }
    }
 
    private List<CrmContractProductDO> validateContractProducts(List<CrmContractSaveReqVO.Product> list) {
        // 1. 校验物料存在且启用
        Set<Long> itemIds = convertSet(list, CrmContractSaveReqVO.Product::getItemId);
        Map<Long, MdmItemRespDTO> itemMap = mdmItemApi.getItemMap(itemIds);
        // 2. 转化为 CrmContractProductDO 列表
        return convertList(list, o -> BeanUtils.toBean(o, CrmContractProductDO.class, item -> {
            MdmItemRespDTO mdmItem = itemMap.get(item.getItemId());
            if (mdmItem == null) {
                throw exception(PRODUCT_NOT_EXISTS);
            }
            item.setItemUnitId(mdmItem.getUnitMeasureId());
            item.setItemPrice(mdmItem.getSalesPrice());
            item.setTotalPrice(MoneyUtils.priceMultiply(item.getContractPrice(), item.getCount()));
        }));
    }
 
    private void calculateTotalPrice(CrmContractDO contract, List<CrmContractProductDO> contractProducts) {
        contract.setTotalProductPrice(getSumValue(contractProducts, CrmContractProductDO::getTotalPrice, BigDecimal::add, BigDecimal.ZERO));
        BigDecimal discountPrice = MoneyUtils.priceMultiplyPercent(contract.getTotalProductPrice(), contract.getDiscountPercent());
        contract.setTotalPrice(contract.getTotalProductPrice().subtract(discountPrice));
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_DELETE_SUB_TYPE, bizNo = "{{#id}}",
            success = CRM_CONTRACT_DELETE_SUCCESS)
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#id", level = CrmPermissionLevelEnum.OWNER)
    public void deleteContract(Long id) {
        // 1.1 校验存在
        CrmContractDO contract = validateContractExists(id);
        // 1.2 只有草稿、审核不通过,可以删除;
        if (!ObjectUtils.equalsAny(contract.getAuditStatus(), CrmAuditStatusEnum.DRAFT.getStatus(),
                CrmAuditStatusEnum.REJECT.getStatus())) {
            throw exception(CONTRACT_DELETE_FAIL_NOT_EDITABLE);
        }
        // 1.3 如果被 CrmReceivableDO 所使用,则不允许删除
        if (receivableService.getReceivableCountByContractId(contract.getId()) > 0) {
            throw exception(CONTRACT_DELETE_FAIL);
        }
 
        // 2.1 删除合同
        contractMapper.deleteById(id);
        // 2.2 删除合同时,解除关联的报价单引用
        CrmSaleQuotationDO quotation = crmSaleQuotationService.getByContractId(id);
        if (quotation != null) {
            crmSaleQuotationService.clearContractReference(quotation.getId());
        }
        // 2.2 删除数据权限
        crmPermissionService.deletePermission(CrmBizTypeEnum.CRM_CONTRACT.getType(), id);
 
        // 3. 记录操作日志上下文
        LogRecordContext.putVariable("contractName", contract.getName());
    }
 
    private CrmContractDO validateContractExists(Long id) {
        CrmContractDO contract = contractMapper.selectById(id);
        if (contract == null) {
            throw exception(CONTRACT_NOT_EXISTS);
        }
        return contract;
    }
 
    /**
     * 获取用户昵称
     *
     * @param userId 用户编号
     * @return 昵称,用户不存在时返回 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)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_TRANSFER_SUB_TYPE, bizNo = "{{#reqVO.id}}",
            success = CRM_CONTRACT_TRANSFER_SUCCESS)
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#reqVO.id", level = CrmPermissionLevelEnum.OWNER)
    public void transferContract(CrmContractTransferReqVO reqVO, Long userId) {
        // 1. 校验合同是否存在
        CrmContractDO contract = validateContractExists(reqVO.getId());
 
        // 2.1 数据权限转移
        crmPermissionService.transferPermission(new CrmPermissionTransferReqBO(userId, CrmBizTypeEnum.CRM_CONTRACT.getType(),
                reqVO.getId(), reqVO.getNewOwnerUserId(), reqVO.getOldOwnerPermissionLevel()));
        // 2.2 设置负责人
        contractMapper.updateById(new CrmContractDO().setId(reqVO.getId()).setOwnerUserId(reqVO.getNewOwnerUserId()));
 
        // 3. 记录转移日志
        LogRecordContext.putVariable("contract", contract);
    }
 
    @Override
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_FOLLOW_UP_SUB_TYPE, bizNo = "{{#id}}",
            success = CRM_CONTRACT_FOLLOW_UP_SUCCESS)
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#id", level = CrmPermissionLevelEnum.WRITE)
    public void updateContractFollowUp(Long id, LocalDateTime contactNextTime, String contactLastContent) {
        // 1. 校验存在
        CrmContractDO contract = validateContractExists(id);
 
        // 2. 更新联系人的跟进信息
        contractMapper.updateById(new CrmContractDO().setId(id).setContactLastTime(LocalDateTime.now()));
 
        // 3. 记录操作日志上下文
        LogRecordContext.putVariable("contractName", contract.getName());
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_SUBMIT_SUB_TYPE, bizNo = "{{#id}}",
            success = CRM_CONTRACT_SUBMIT_SUCCESS)
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#id", level = CrmPermissionLevelEnum.WRITE)
    public void submitContract(Long id) {
        // 1. 校验存在 + 可提交状态(未提交 / 审核不通过)
        CrmContractDO contract = validateContractExists(id);
        if (ObjUtil.notEqual(contract.getAuditStatus(), CrmAuditStatusEnum.DRAFT.getStatus())
                && ObjUtil.notEqual(contract.getAuditStatus(), CrmAuditStatusEnum.REJECT.getStatus())) {
            throw exception(CONTRACT_SUBMIT_FAIL_NOT_EDITABLE);
        }
 
        // 2. 校验审批配置已启用且配置了有效审批人(未配置时抛出带明确提示的业务异常)
        approvalConfigApi.validateApprovalEnabledAndGetApprovers(CONTRACT_APPROVE_BIZ_TYPE);
 
        // 3. 状态置为审批中,并清空上一轮审核结果,避免残留「审核不通过」的原因
        if (contractMapper.submitAndResetAuditInfo(id, CrmAuditStatusEnum.PROCESS.getStatus()) != 1) {
            throw exception(CONTRACT_SUBMIT_FAIL_NOT_EDITABLE);
        }
 
        // 4. 创建 BPM 流程实例,使审批出现在「协同办公 - 我的流程」
        bpmProcessInstanceApi.createProcessInstance(getLoginUserId(),
                new BpmProcessInstanceCreateReqDTO()
                        .setProcessDefinitionKey(CONTRACT_APPROVE_PROCESS_KEY)
                        .setBusinessKey(String.valueOf(id)));
 
        // 5. 记录日志
        LogRecordContext.putVariable("contractName", contract.getName());
    }
 
    @Override
    public Set<Long> getContractApproverUserIds() {
        return approvalConfigApi.getApproverUserIds(CONTRACT_APPROVE_BIZ_TYPE);
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void auditContract(Long id, Boolean pass, String reviewRemark) {
        // 1. 校验存在
        CrmContractDO contract = validateContractExists(id);
        // 2. 校验处于审批中状态
        if (ObjUtil.notEqual(contract.getAuditStatus(), CrmAuditStatusEnum.PROCESS.getStatus())) {
            throw exception(CONTRACT_AUDIT_FAIL_NOT_PROCESS);
        }
        // 3. 校验当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(CONTRACT_APPROVE_BIZ_TYPE, userId);
        // 4. 审核不通过:必须填写原因,状态置为审核不通过,退回提交人修改后可重新提交
        if (!Boolean.TRUE.equals(pass)) {
            if (StrUtil.isBlank(reviewRemark)) {
                throw exception(CONTRACT_AUDIT_REJECT_REASON_REQUIRED);
            }
            if (contractMapper.auditContract(id, CrmAuditStatusEnum.REJECT.getStatus(),
                    userId, getUserNickname(userId), reviewRemark) != 1) {
                throw exception(CONTRACT_AUDIT_FAIL_NOT_PROCESS);
            }
            return;
        }
        // 5. 审核通过:记录审核人与审核意见,状态置为审核通过
        if (contractMapper.auditContract(id, CrmAuditStatusEnum.APPROVE.getStatus(),
                userId, getUserNickname(userId), reviewRemark) != 1) {
            throw exception(CONTRACT_AUDIT_FAIL_NOT_PROCESS);
        }
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateContractAuditStatus(Long id, Integer bpmStatus, String reason) {
        // BPM 审批结果映射为合同审核状态:通过=20 / 不通过=30 / 取消=40
        Integer auditStatus;
        if (BpmTaskStatusEnum.APPROVE.getStatus().equals(bpmStatus)) {
            auditStatus = CrmAuditStatusEnum.APPROVE.getStatus();
        } else if (BpmTaskStatusEnum.REJECT.getStatus().equals(bpmStatus)) {
            auditStatus = CrmAuditStatusEnum.REJECT.getStatus();
        } else if (BpmTaskStatusEnum.CANCEL.getStatus().equals(bpmStatus)) {
            auditStatus = CrmAuditStatusEnum.CANCEL.getStatus();
        } else {
            return;
        }
        if (contractMapper.updateAuditStatusByBpm(id, auditStatus, reason) != 1) {
            log.warn("[updateContractAuditStatus] 合同({}) 不处于审批中状态,忽略 BPM 结果({})", id, bpmStatus);
        }
    }
 
    // ======================= 查询相关 =======================
 
    @Override
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#id", level = CrmPermissionLevelEnum.READ)
    public CrmContractDO getContract(Long id) {
        return contractMapper.selectById(id);
    }
 
    @Override
    public CrmContractDO validateContract(Long id) {
        return validateContractExists(id);
    }
 
    @Override
    public List<CrmContractDO> getContractList(Collection<Long> ids) {
        if (CollUtil.isEmpty(ids)) {
            return ListUtil.empty();
        }
        return contractMapper.selectByIds(ids);
    }
 
    @Override
    public PageResult<CrmContractDO> getContractPage(CrmContractPageReqVO pageReqVO, Long userId) {
        // 1. 即将到期,需要查询合同配置
        CrmContractConfigDO config = null;
        if (CrmContractPageReqVO.EXPIRY_TYPE_ABOUT_TO_EXPIRE.equals(pageReqVO.getExpiryType())) {
            config = contractConfigService.getContractConfig();
            if (config != null && Boolean.FALSE.equals(config.getNotifyEnabled())) {
                config = null;
            }
            if (config == null) {
                return PageResult.empty();
            }
        }
        // 2. 查询分页
        // 合同可见性完全由 appendPermissionCondition 控制(合同团队 ∪ 客户团队),
        // 不再额外按「有权限的客户」过滤,否则不在客户团队、但属于合同负责人/合同团队的用户会被错误过滤掉
        return contractMapper.selectPage(pageReqVO, userId, config);
    }
 
    @Override
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CUSTOMER, bizId = "#pageReqVO.customerId", level = CrmPermissionLevelEnum.READ)
    public PageResult<CrmContractDO> getContractPageByCustomerId(CrmContractPageReqVO pageReqVO) {
        return contractMapper.selectPageByCustomerId(pageReqVO);
    }
 
    @Override
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_BUSINESS, bizId = "#pageReqVO.businessId", level = CrmPermissionLevelEnum.READ)
    public PageResult<CrmContractDO> getContractPageByBusinessId(CrmContractPageReqVO pageReqVO) {
        return contractMapper.selectPageByBusinessId(pageReqVO);
    }
 
    @Override
    public Long getContractCountByContactId(Long contactId) {
        return contractMapper.selectCountByContactId(contactId);
    }
 
    @Override
    public Long getContractCountByCustomerId(Long customerId) {
        return contractMapper.selectCount(CrmContractDO::getCustomerId, customerId);
    }
 
    @Override
    public Long getContractCountByBusinessId(Long businessId) {
        return contractMapper.selectCountByBusinessId(businessId);
    }
 
    @Override
    public List<CrmContractProductDO> getContractProductListByContractId(Long contactId) {
        return contractProductMapper.selectListByContractId(contactId);
    }
 
    @Override
    public Long getAuditContractCount(Long userId) {
        return contractMapper.selectCountByAudit(userId);
    }
 
    @Override
    public Long getRemindContractCount(Long userId) {
        CrmContractConfigDO config = contractConfigService.getContractConfig();
        if (config == null || Boolean.FALSE.equals(config.getNotifyEnabled())) {
            return 0L;
        }
        return contractMapper.selectCountByRemind(userId, config);
    }
 
    @Override
    public List<CrmContractDO> getContractListByCustomerIdOwnerUserId(Long customerId, Long ownerUserId) {
        return contractMapper.selectListByCustomerIdOwnerUserId(customerId, ownerUserId);
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = "生成销售订单", bizNo = "{{#id}}",
            success = "合同【{{#contractName}}】生成销售订单【{{#orderNo}}】成功")
    @CrmPermission(bizType = CrmBizTypeEnum.CRM_CONTRACT, bizId = "#id", level = CrmPermissionLevelEnum.WRITE)
    public Long generateSaleOrder(Long id, Long userId) {
        // 1. 校验合同存在且已审批通过
        CrmContractDO contract = contractMapper.selectByIdForUpdate(id);
        if (contract == null) throw exception(CONTRACT_NOT_EXISTS);
        if (!CrmAuditStatusEnum.APPROVE.getStatus().equals(contract.getAuditStatus())) {
            throw exception(CONTRACT_GENERATE_ORDER_FAIL_NOT_APPROVE);
        }
        // 2. 校验是否已生成销售订单
        ErpSaleOrderRespDTO existOrder = saleOrderApi.getSaleOrderByContractId(id).getCheckedData();
        if (existOrder != null) {
            throw exception(CONTRACT_GENERATE_ORDER_FAIL_EXISTS_ORDER, existOrder.getNo());
        }
 
        // 3. 获取合同产品列表
        List<CrmContractProductDO> contractProducts = contractProductMapper.selectListByContractId(id);
        if (CollUtil.isEmpty(contractProducts)) {
            throw exception(CONTRACT_GENERATE_ORDER_FAIL_NO_PRODUCT);
        }
 
        // 4. 构建销售订单创建请求
        ErpSaleOrderCreateReqDTO createReqDTO = new ErpSaleOrderCreateReqDTO();
        createReqDTO.setCustomerId(contract.getCustomerId());
        createReqDTO.setContractId(contract.getId());
        createReqDTO.setContractNo(contract.getNo());
        createReqDTO.setSaleUserId(contract.getOwnerUserId());
        createReqDTO.setOrderTime(LocalDateTime.now().toString());
        createReqDTO.setDiscountPercent(contract.getDiscountPercent() != null ? contract.getDiscountPercent() : BigDecimal.ZERO);
        createReqDTO.setDepositPrice(contract.getDepositPrice() != null ? contract.getDepositPrice() : BigDecimal.ZERO);
        createReqDTO.setRemark("由合同【" + contract.getNo() + "】自动生成");
 
        // 5. 构建订单项
        List<ErpSaleOrderCreateReqDTO.Item> items = contractProducts.stream()
                .map(cp -> {
                    ErpSaleOrderCreateReqDTO.Item item = new ErpSaleOrderCreateReqDTO.Item();
                    item.setProductId(cp.getItemId());
                    item.setProductPrice(cp.getContractPrice());
                    item.setCount(cp.getCount());
                    // 合同产品默认需要生产:订单审批通过后才能自动创建 MPS,
                    // 否则「合同 → 订单 → 生产」链路在合同来源的订单上会断掉。
                    // 若个别产品为外购/转售,可在销售订单明细中把「需要生产」改为否。
                    item.setNeedProduction(1);
                    return item;
                })
                .toList();
        createReqDTO.setItems(items);
 
        // 6. 创建销售订单
        Long orderId = saleOrderApi.createSaleOrder(createReqDTO).getCheckedData();
        ErpSaleOrderRespDTO order = saleOrderApi.getSaleOrder(orderId).getCheckedData();
 
        // 7. 更新合同关联订单信息
        contractMapper.updateById(new CrmContractDO()
                .setId(id)
                .setOrderId(orderId)
                .setOrderNo(order.getNo()));
 
        // 8. 记录操作日志
        LogRecordContext.putVariable("contractName", contract.getName());
        LogRecordContext.putVariable("orderNo", order.getNo());
 
        return orderId;
    }
 
    @Override
    public void updateContractStatus(Long id, Integer status) {
        contractMapper.updateById(new CrmContractDO()
                .setId(id)
                .setAuditStatus(status));
    }
 
    @Override
    public void updateContractStatusByOrderId(Long orderId, Integer status) {
        CrmContractDO contract = contractMapper.selectByOrderId(orderId);
        if (contract != null) {
            contractMapper.updateById(new CrmContractDO()
                    .setId(contract.getId())
                    .setAuditStatus(status));
        }
    }
 
    @Override
    public CrmContractImportRespVO importContractList(List<CrmContractImportExcelVO> rows, CrmContractImportReqVO req) {
        if (CollUtil.isEmpty(rows)) throw exception(CONTRACT_IMPORT_LIST_IS_EMPTY);
        Long ownerId = req.getOwnerUserId() != null ? req.getOwnerUserId() : getLoginUserId();
        adminUserApi.validateUser(ownerId);
        CrmContractImportRespVO result = CrmContractImportRespVO.builder()
                .createContractNames(new ArrayList<>()).updateContractNames(new ArrayList<>())
                .failureContractNames(new LinkedHashMap<>()).build();
        Map<String, List<CrmContractImportExcelVO>> groups = new LinkedHashMap<>();
        int rowNo = 0;
        for (CrmContractImportExcelVO row : rows) {
            rowNo++;
            if (row == null) continue;
            if (StrUtil.isBlank(row.getName()) && StrUtil.isBlank(row.getCustomerName()) && StrUtil.isBlank(row.getProductCode())) continue;
            if (StrUtil.isBlank(row.getName()) || StrUtil.isBlank(row.getCustomerName())) {
                throw exception(CONTRACT_IMPORT_INVALID, "第" + rowNo + "行合同名称和客户名称不能为空");
            }
            String key = row.getCustomerName().trim() + " / " + row.getName().trim();
            groups.computeIfAbsent(key, ignored -> new ArrayList<>()).add(row);
        }
        if (groups.isEmpty() && result.getFailureContractNames().isEmpty()) throw exception(CONTRACT_IMPORT_LIST_IS_EMPTY);
        groups.forEach((key, group) -> {
            try {
                boolean created = getSelf().importContractGroup(group, ownerId, Boolean.TRUE.equals(req.getUpdateSupport()));
                (created ? result.getCreateContractNames() : result.getUpdateContractNames()).add(key);
            } catch (ServiceException ex) {
                result.getFailureContractNames().put(key, ex.getMessage());
            }
        });
        return result;
    }
 
    /** 一张合同及全部明细在同一事务中保存。 */
    @Transactional(rollbackFor = Exception.class)
    public boolean importContractGroup(List<CrmContractImportExcelVO> rows, Long ownerId, boolean updateSupport) {
        CrmContractImportExcelVO first = rows.get(0);
        CrmCustomerDO customer = customerMapper.selectByCustomerName(first.getCustomerName().trim());
        if (customer == null) throw exception(CONTRACT_IMPORT_CUSTOMER_NOT_EXISTS, first.getCustomerName());
        CrmContractDO existing = contractMapper.selectByNameAndCustomerId(first.getName().trim(), customer.getId());
        if (existing != null && !updateSupport) throw exception(CONTRACT_NAME_EXISTS, first.getName());
        if (existing != null && !ObjectUtils.equalsAny(existing.getAuditStatus(), CrmAuditStatusEnum.DRAFT.getStatus(), CrmAuditStatusEnum.REJECT.getStatus())) {
            throw exception(CONTRACT_UPDATE_FAIL_NOT_DRAFT);
        }
        if (first.getDiscountPercent() != null && (first.getDiscountPercent().signum() < 0 || first.getDiscountPercent().compareTo(new BigDecimal("100")) > 0)) {
            throw exception(CONTRACT_IMPORT_INVALID, "折扣必须在 0 到 100 之间");
        }
        if (first.getStartTime() != null && first.getEndTime() != null && first.getEndTime().isBefore(first.getStartTime())) {
            throw exception(CONTRACT_IMPORT_INVALID, "结束时间不能早于开始时间");
        }
        List<CrmContractSaveReqVO.Product> products = new ArrayList<>();
        for (CrmContractImportExcelVO row : rows) {
            if (row.getOrderDate() != null && !row.getOrderDate().equals(first.getOrderDate())
                    || row.getDiscountPercent() != null && (first.getDiscountPercent() == null || row.getDiscountPercent().compareTo(first.getDiscountPercent()) != 0)) {
                throw exception(CONTRACT_IMPORT_INVALID, "同一合同的下单日期和折扣必须一致");
            }
            if (row.getStartTime() != null && !row.getStartTime().equals(first.getStartTime())
                    || row.getEndTime() != null && !row.getEndTime().equals(first.getEndTime())
                    || row.getTotalPrice() != null && (first.getTotalPrice() == null || row.getTotalPrice().compareTo(first.getTotalPrice()) != 0)
                    || row.getDepositPrice() != null && (first.getDepositPrice() == null || row.getDepositPrice().compareTo(first.getDepositPrice()) != 0)
                    || StrUtil.isNotBlank(row.getContractType()) && !StrUtil.equals(row.getContractType(), first.getContractType())
                    || StrUtil.isNotBlank(row.getVoltageLevel()) && !StrUtil.equals(row.getVoltageLevel(), first.getVoltageLevel())
                    || StrUtil.isNotBlank(row.getElectricityType()) && !StrUtil.equals(row.getElectricityType(), first.getElectricityType())
                    || row.getContractCapacity() != null && (first.getContractCapacity() == null || row.getContractCapacity().compareTo(first.getContractCapacity()) != 0)
                    || StrUtil.isNotBlank(row.getTariffMode()) && !StrUtil.equals(row.getTariffMode(), first.getTariffMode())
                    || StrUtil.isNotBlank(row.getMeterMode()) && !StrUtil.equals(row.getMeterMode(), first.getMeterMode())
                    || row.getPayCycle() != null && !row.getPayCycle().equals(first.getPayCycle())
                    || StrUtil.isNotBlank(row.getRemark()) && !StrUtil.equals(row.getRemark(), first.getRemark())) {
                throw exception(CONTRACT_IMPORT_INVALID, "同一合同的主表信息必须一致");
            }
            boolean hasDetail = StrUtil.isNotBlank(row.getProductCode()) || row.getProductPrice() != null || row.getProductCount() != null;
            if (!hasDetail) continue;
            if (StrUtil.isBlank(row.getProductCode()) || row.getProductPrice() == null || row.getProductPrice().signum() < 0 || row.getProductCount() == null || row.getProductCount() <= 0) {
                throw exception(CONTRACT_IMPORT_INVALID, "物料编码、非负合同单价和大于零的整数数量必须同时填写");
            }
            MdmItemRespDTO item = mdmItemApi.getItemByCode(row.getProductCode().trim()).getCheckedData();
            if (item == null) throw exception(CONTRACT_IMPORT_INVALID, "物料不存在:" + row.getProductCode());
            CrmContractSaveReqVO.Product product = new CrmContractSaveReqVO.Product();
            product.setItemId(item.getId());
            product.setItemPrice(item.getSalesPrice());
            product.setContractPrice(row.getProductPrice());
            product.setCount(row.getProductCount());
            products.add(product);
        }
        if (!products.isEmpty() && products.size() != rows.size()) throw exception(CONTRACT_IMPORT_INVALID, "同一合同的每一行都必须填写产品明细");
        CrmContractDO contract = BeanUtils.toBean(first, CrmContractDO.class).setCustomerId(customer.getId());
        contract.setName(first.getName().trim());
        if (existing == null) {
            String no = noRedisDAO.generate(CrmNoRedisDAO.CONTRACT_NO_PREFIX);
            if (contractMapper.selectByNo(no) != null) throw exception(CONTRACT_NO_EXISTS);
            contract.setNo(no).setOwnerUserId(ownerId).setAuditStatus(CrmAuditStatusEnum.DRAFT.getStatus());
            if (contract.getOrderDate() == null) contract.setOrderDate(LocalDateTime.now());
            if (contract.getDiscountPercent() == null) contract.setDiscountPercent(BigDecimal.ZERO);
            if (!products.isEmpty() || contract.getTotalPrice() == null) calculateTotalPrice(contract, validateContractProducts(products));
            contractMapper.insert(contract);
            crmPermissionService.createPermission(new CrmPermissionCreateReqBO().setBizType(CrmBizTypeEnum.CRM_CONTRACT.getType()).setBizId(contract.getId()).setUserId(ownerId).setLevel(CrmPermissionLevelEnum.OWNER.getLevel()));
            // 客户负责人自动拥有该合同的读写权限
            crmPermissionService.createPermissionForCustomerOwner(CrmBizTypeEnum.CRM_CONTRACT.getType(),
                    contract.getId(), customer.getId(), ownerId);
        } else {
            contract.setId(existing.getId());
            List<CrmContractProductDO> amountDetails = products.isEmpty()
                    ? contractProductMapper.selectListByContractId(existing.getId()) : validateContractProducts(products);
            if (CollUtil.isNotEmpty(amountDetails)) {
                if (contract.getDiscountPercent() == null) contract.setDiscountPercent(
                        existing.getDiscountPercent() == null ? BigDecimal.ZERO : existing.getDiscountPercent());
                calculateTotalPrice(contract, amountDetails);
            }
            contractMapper.updateById(contract);
        }
        if (!products.isEmpty()) {
            List<CrmContractProductDO> details = validateContractProducts(products);
            if (existing != null) contractProductMapper.delete(CrmContractProductDO::getContractId, existing.getId());
            details.forEach(detail -> detail.setContractId(contract.getId()));
            contractProductMapper.insertBatch(details);
        }
        getSelf().importContractLog(contract, existing != null);
        return existing == null;
    }
 
 
    /**
     * 记录导入合同时的操作日志
     *
     * @param contract 合同信息
     * @param isUpdate 是否更新;true - 更新,false - 新增
     */
    @LogRecord(type = CRM_CONTRACT_TYPE, subType = CRM_CONTRACT_IMPORT_SUB_TYPE, bizNo = "{{#contract.id}}",
            success = CRM_CONTRACT_IMPORT_SUCCESS)
    public void importContractLog(CrmContractDO contract, boolean isUpdate) {
        LogRecordContext.putVariable("contract", contract);
        LogRecordContext.putVariable("isUpdate", isUpdate);
    }
 
    /**
     * 获得自身的代理对象,解决 AOP 生效问题
     *
     * @return 自己
     */
    private CrmContractServiceImpl getSelf() {
        return SpringUtil.getBean(getClass());
    }
 
}