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线上支付订单选择客户收款信息退款时，审批通过处理仍无条件校验收款商户的原路退款凭证， 商户凭证不完整（如微信 v2 缺 API 客户端证书）即阻断，导致企微已通过的退款无法完成。 将凭证校验移入原路退款分支，旧人工审批入口同步按退款方式判定。 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
306 lines
14 KiB
Go
306 lines
14 KiB
Go
package refund
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import (
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"context"
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"strconv"
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"strings"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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approvalapp "github.com/break/junhong_cmp_fiber/internal/application/approval"
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employeecollectionapp "github.com/break/junhong_cmp_fiber/internal/application/employeecollection"
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refundapproval "github.com/break/junhong_cmp_fiber/internal/application/refundapproval"
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"github.com/break/junhong_cmp_fiber/internal/infrastructure/commissiondelivery"
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"github.com/break/junhong_cmp_fiber/internal/infrastructure/messaging/outbox"
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"github.com/break/junhong_cmp_fiber/internal/model"
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"github.com/break/junhong_cmp_fiber/pkg/auditcontext"
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"github.com/break/junhong_cmp_fiber/pkg/constants"
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"github.com/break/junhong_cmp_fiber/pkg/errors"
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)
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// Handle 幂等处理退款的渠道无关审批终态。
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func (s *Service) Handle(ctx context.Context, event approvalapp.TerminalDecisionEvent) error {
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if s == nil || s.db == nil || event.BusinessType != constants.ApprovalBusinessTypeRefund ||
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event.BusinessID == 0 || event.InstanceID == 0 {
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return errors.New(errors.CodeInvalidParam, "退款审批终态参数无效")
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}
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switch event.Decision {
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case constants.ApprovalDecisionApproved:
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return s.applyApprovedDecision(ctx, event)
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case constants.ApprovalDecisionRejected, constants.ApprovalDecisionCancelled, constants.ApprovalDecisionDeleted,
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constants.ApprovalDecisionSubmissionFailed:
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return s.applyClosedDecision(ctx, event)
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case constants.ApprovalDecisionRevokedAfterApproved:
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return s.applyRevokedAfterApproved(ctx, event)
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default:
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return errors.New(errors.CodeInvalidParam, "不支持的退款审批终态")
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}
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}
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// applyRevokedAfterApproved 处理企业微信通过后撤销。
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//
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// 不回滚已失效的套餐权益、不取消已提交的渠道退款、也不恢复订单退款状态：这些事实在通过时
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// 已经成立。系统只标记审批异常并禁止后续自动重提，交由超级管理员线下处理。
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func (s *Service) applyRevokedAfterApproved(ctx context.Context, event approvalapp.TerminalDecisionEvent) error {
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ctx = auditcontext.With(ctx, auditcontext.Context{CorrelationID: event.CorrelationID, ParentEventID: event.EventID})
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var refund model.RefundRequest
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err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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target, _, err := refundapproval.ResolveRefundInTx(ctx, tx, event.BusinessID, event.InstanceID)
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if err != nil {
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return err
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}
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if err := tx.WithContext(ctx).Clauses(clause.Locking{Strength: "UPDATE"}).First(&refund, target.ID).Error; err != nil {
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return errors.Wrap(errors.CodeDatabaseError, err, "锁定退款申请失败")
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}
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if refund.AnomalyFlag == 1 {
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return nil
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}
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beforeRefund := refundAuditState(&refund)
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result := tx.WithContext(ctx).Model(&model.RefundRequest{}).
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Where("id = ? AND anomaly_flag = 0", refund.ID).
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Updates(map[string]any{
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"anomaly_flag": 1,
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"anomaly_reason": "企业微信通过后撤销，需超级管理员线下处理",
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"failure_reason": constants.RefundFailureRevokedAfterApproved,
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"updated_at": event.OccurredAt,
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})
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if result.Error != nil {
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return errors.Wrap(errors.CodeDatabaseError, result.Error, "标记退款审批异常失败")
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}
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if result.RowsAffected != 1 {
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return nil
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}
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refund.AnomalyFlag = 1
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refund.AnomalyReason = "企业微信通过后撤销，需超级管理员线下处理"
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refund.FailureReason = constants.RefundFailureRevokedAfterApproved
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return s.appendRefundAudit(ctx, tx, refund.ID, constants.AuditActionRefundAnomalyFlagged, "标记退款审批异常",
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"refund:"+strconv.FormatUint(uint64(refund.ID), 10)+":revoked", beforeRefund, nil, "退款审批通过后撤销")
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})
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if err != nil {
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return err
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}
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return nil
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}
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func (s *Service) applyApprovedDecision(ctx context.Context, event approvalapp.TerminalDecisionEvent) error {
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ctx = auditcontext.With(ctx, auditcontext.Context{CorrelationID: event.CorrelationID, ParentEventID: event.EventID})
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var refund model.RefundRequest
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var order model.Order
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changed := false
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err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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// 业务标识解析：审批尝试记录优先，退款申请兜底（兼容尚未接入尝试模式的存量申请）。
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target, attempt, err := refundapproval.ResolveRefundInTx(ctx, tx, event.BusinessID, event.InstanceID)
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if err != nil {
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return err
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}
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if err := tx.WithContext(ctx).Clauses(clause.Locking{Strength: "UPDATE"}).First(&refund, target.ID).Error; err != nil {
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if err == gorm.ErrRecordNotFound {
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return errors.New(errors.CodeForbidden, "无权限操作该资源或资源不存在")
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}
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return errors.Wrap(errors.CodeDatabaseError, err, "锁定退款申请失败")
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}
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if refund.Status != model.RefundStatusPending && refund.Status != model.RefundStatusApproved &&
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refund.Status != model.RefundStatusChannelProcessing {
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return errors.New(errors.CodeInvalidStatus, "退款申请状态不允许审批通过")
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}
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if err := tx.WithContext(ctx).Clauses(clause.Locking{Strength: "UPDATE"}).Where("id = ?", refund.OrderID).First(&order).Error; err != nil {
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return errors.Wrap(errors.CodeDatabaseError, err, "锁定退款关联订单失败")
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}
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beforeRefund := refundAuditState(&refund)
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beforeOrder := map[string]any{"payment_status": order.PaymentStatus}
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approvedAmount := refund.RequestedRefundAmount
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if err := validateApprovedRefundAmount(approvedAmount, refund.RequestedRefundAmount, &order); err != nil {
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return err
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}
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// 原路退款只登记待执行事实：退款单转入原路处理中，订单在渠道明确成功前保持已支付。
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// 客户收款信息与退回原钱包在审批通过时即完成，订单同时置为已退款。
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originalRoute := refund.Method == constants.RefundMethodOriginalRoute
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if refund.Status == model.RefundStatusPending {
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changed = true
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targetStatus := model.RefundStatusApproved
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if originalRoute {
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targetStatus = model.RefundStatusChannelProcessing
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}
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result := tx.WithContext(ctx).Model(&model.RefundRequest{}).
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Where("id = ? AND status = ?", refund.ID, model.RefundStatusPending).
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Updates(map[string]any{
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"status": targetStatus, "processed_at": event.OccurredAt,
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"approved_refund_amount": approvedAmount, "remark": "企业微信审批通过",
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"failure_reason": "", "failure_message": "",
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"updated_at": event.OccurredAt,
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})
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if result.Error != nil {
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return errors.Wrap(errors.CodeDatabaseError, result.Error, "完成退款审批申请失败")
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}
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if result.RowsAffected != 1 {
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return errors.New(errors.CodeConflict, "退款申请状态已变化")
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}
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refund.Status = targetStatus
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}
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if !originalRoute {
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switch order.PaymentStatus {
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case model.PaymentStatusPaid:
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changed = true
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result := tx.WithContext(ctx).Model(&model.Order{}).
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Where("id = ? AND payment_status = ?", order.ID, model.PaymentStatusPaid).
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Updates(map[string]any{"payment_status": model.PaymentStatusRefunded, "updated_at": event.OccurredAt})
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if result.Error != nil {
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return errors.Wrap(errors.CodeDatabaseError, result.Error, "更新订单退款状态失败")
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}
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if result.RowsAffected != 1 {
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return errors.New(errors.CodeConflict, "订单退款状态已变化")
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}
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order.PaymentStatus = model.PaymentStatusRefunded
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case model.PaymentStatusRefunded:
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default:
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return errors.New(errors.CodeInvalidStatus, "订单状态不允许完成退款")
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}
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} else {
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if order.PaymentStatus != model.PaymentStatusPaid && order.PaymentStatus != model.PaymentStatusRefunded {
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return errors.New(errors.CodeInvalidStatus, "订单状态不允许原路退款")
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}
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// 收款商户凭证只约束原路退款；客户收款信息与钱包退款不经渠道，不受其完整性影响。
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if err := s.preparePaymentRefundCredentials(ctx, tx, order.ID); err != nil {
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return err
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}
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if err := s.prepareChannelRefundInTx(ctx, tx, &refund, attempt); err != nil {
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return err
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}
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}
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if err := s.refundWalletPayment(ctx, tx, &refund, &order, approvedAmount, event.SubmitterAccountID); err != nil {
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return err
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}
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// 员工代收款冲销：接入点只在既有退款成功事务内，以 bill_id+refund_id 唯一事实幂等，
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// 不依赖下方 changed 门；来源订单未建账时直接跳过，不阻断退款。
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if s.refundOffset == nil {
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return errors.New(errors.CodeInternalError, "员工代收款退款冲销能力未配置")
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}
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if err := s.refundOffset.ApplyInTx(ctx, tx, employeecollectionapp.RefundOffsetSource{
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RefundID: refund.ID, OrderID: order.ID, RefundAmount: approvedAmount,
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}); err != nil {
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return err
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}
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if !originalRoute {
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if err := s.appendCompletedNotification(ctx, tx, &refund); err != nil {
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return err
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}
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}
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if err := commissiondelivery.AppendRefundCommissionDeduct(ctx, tx, outbox.NewRepository(), refund.ID, refund.OrderID); err != nil {
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return err
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}
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if err := commissiondelivery.AppendRefundAssetProcess(ctx, tx, outbox.NewRepository(), refund.ID, refund.OrderID); err != nil {
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return err
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}
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if !changed {
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return nil
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}
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return s.appendRefundAudit(ctx, tx, refund.ID, constants.AuditActionRefundApproved, "通过退款审批",
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"refund:"+strconv.FormatUint(uint64(refund.ID), 10)+":approved", beforeRefund, beforeOrder, "退款已通过")
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})
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if err != nil {
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s.recordRefundFailure(ctx, constants.AuditActionRefundApproved, "通过退款审批失败", &refund, &order, err)
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return err
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}
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return nil
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}
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// prepareChannelRefundInTx 在企微通过事务内登记原路退款的待执行事实。
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//
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// 只写本地事实与可靠事件：请求号在提交时已冻结到审批尝试记录，这里把它落到退款单并转入
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// 原路处理中；真正的渠道调用由可靠事件驱动的事务外消费者执行（ENG-TX-001）。
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func (s *Service) prepareChannelRefundInTx(ctx context.Context, tx *gorm.DB, refund *model.RefundRequest, attempt *model.RefundRequestAttempt) error {
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if s.channelRefund == nil {
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return errors.New(errors.CodeInternalError, "渠道原路退款能力未配置")
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}
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return s.channelRefund.PrepareInTx(ctx, tx, refund, attempt)
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}
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// applyClosedDecision 处理企微拒绝、撤销、删除（退款单→已拒绝）与审批提交失败（退款单→审批提交失败），均为钱未动的终态。
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// 业务标识按审批尝试优先解析（BusinessID 在尝试模式下是尝试 ID），再按退款单 ID 加行锁。
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func (s *Service) applyClosedDecision(ctx context.Context, event approvalapp.TerminalDecisionEvent) error {
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ctx = auditcontext.With(ctx, auditcontext.Context{CorrelationID: event.CorrelationID, ParentEventID: event.EventID})
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reason := map[string]string{
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constants.ApprovalDecisionRejected: "企业微信审批已拒绝",
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constants.ApprovalDecisionCancelled: "企业微信审批已撤销",
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constants.ApprovalDecisionDeleted: "企业微信审批已删除",
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}[event.Decision]
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submissionFailed := event.Decision == constants.ApprovalDecisionSubmissionFailed
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targetStatus, actionSummary, auditSuffix, auditResult := model.RefundStatusRejected, "拒绝退款审批", ":rejected", "退款已拒绝"
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if submissionFailed {
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targetStatus, actionSummary, auditSuffix, auditResult = model.RefundStatusSubmissionFailed, "退款审批提交失败", ":submission_failed", "退款审批提交失败"
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}
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var refund model.RefundRequest
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var order model.Order
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err := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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target, _, err := refundapproval.ResolveRefundInTx(ctx, tx, event.BusinessID, event.InstanceID)
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if err != nil {
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return err
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}
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if err := tx.WithContext(ctx).Clauses(clause.Locking{Strength: "UPDATE"}).First(&refund, target.ID).Error; err != nil {
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return errors.Wrap(errors.CodeDatabaseError, err, "锁定退款申请失败")
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}
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// 已被重新发起取代的历史审批不再改变退款单事实。
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if refund.LatestApprovalInstanceID != 0 && refund.LatestApprovalInstanceID != event.InstanceID {
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return nil
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}
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if refund.Status == targetStatus {
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return nil
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}
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if submissionFailed {
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failureReason, failed, err := approvalapp.ConfirmSubmissionFailed(ctx, tx, event.InstanceID)
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if err != nil || !failed {
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return err
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}
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reason = failureReason
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}
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if refund.Status != model.RefundStatusPending {
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return errors.New(errors.CodeInvalidStatus, "退款申请状态不允许结束审批")
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}
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if err := tx.WithContext(ctx).First(&order, refund.OrderID).Error; err != nil {
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return errors.Wrap(errors.CodeDatabaseError, err, "查询退款关联订单失败")
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}
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beforeRefund := refundAuditState(&refund)
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result := tx.WithContext(ctx).Model(&model.RefundRequest{}).
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Where("id = ? AND status = ?", refund.ID, model.RefundStatusPending).
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Updates(map[string]any{
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"status": targetStatus, "processed_at": event.OccurredAt,
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"reject_reason": strings.TrimSpace(reason), "updated_at": event.OccurredAt,
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})
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if result.Error != nil {
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return errors.Wrap(errors.CodeDatabaseError, result.Error, "结束退款审批申请失败")
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}
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if result.RowsAffected != 1 {
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return errors.New(errors.CodeConflict, "退款申请状态已变化")
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}
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return s.appendRefundAudit(ctx, tx, refund.ID, constants.AuditActionRefundRejected, actionSummary,
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"refund:"+strconv.FormatUint(uint64(refund.ID), 10)+auditSuffix+":"+strconv.FormatUint(uint64(event.InstanceID), 10),
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beforeRefund, nil, auditResult)
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})
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if err != nil {
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s.recordRefundFailure(ctx, constants.AuditActionRefundRejected, "拒绝退款审批失败", &refund, &order, err)
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}
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return err
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}
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// ProcessCommissionDeduction 处理退款佣金回溯后处理。
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// 返回非 nil 表示后处理尚未闭合（准入未满足、冻结实收非正或订单佣金未终态），
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// 由 Outbox 与周期性补偿任务重试；返回 nil 表示已闭合并已落库全部应有事实。
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func (s *Service) ProcessCommissionDeduction(ctx context.Context, refundID uint) error {
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return s.clawbackCommission(ctx, refundID)
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}
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func (s *Service) ProcessAssetPostProcessing(ctx context.Context, refundID uint) error {
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s.handleRefundAssetProcessing(ctx, refundID)
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var refund model.RefundRequest
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if err := s.db.WithContext(ctx).Select("asset_reset").First(&refund, refundID).Error; err != nil {
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return errors.Wrap(errors.CodeDatabaseError, err, "复核退款资产后处理状态失败")
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}
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if !refund.AssetReset {
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return errors.New(errors.CodeServiceUnavailable, "退款资产后处理尚未完成")
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}
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return nil
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}
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var _ approvalapp.BusinessDecisionHandler = (*Service)(nil)
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