收口审计治理与套餐任务进展

Constraint: 在线热修前必须保存当前迭代分支全部有效代码进展
Confidence: medium
Scope-risk: broad
Directive: 后续修改需保持审计事件与业务事务边界一致
Tested: git diff --cached --check
Not-tested: 未运行全量测试，提交用于切换分支前保存既有工作

internal/application/refundapproval/creation.go

@@ -18,9 +18,23 @@ import (
 // CreateCommand 描述已通过订单与金额校验的退款审批申请。
 type CreateCommand struct {
 	Refund             *model.RefundRequest
+	Order              *model.Order
 	SubmitterAccountID uint
 }
 
+// ApplicationAudit 描述退款申请、审批、订单和提交人的同事务审计事实。
+type ApplicationAudit struct {
+	Refund    *model.RefundRequest
+	Order     *model.Order
+	Approval  *model.ApprovalInstance
+	Submitter *model.Account
+}
+
+// AuditWriter 接收退款申请事务内审计事实。
+type AuditWriter interface {
+	WriteRefundApplication(ctx context.Context, tx *gorm.DB, audit ApplicationAudit) error
+}
+
 // CreateResult 返回原子保存后的退款申请和初始审批状态。
 type CreateResult struct {
 	Refund         *model.RefundRequest
@@ -32,19 +46,20 @@ type CreateResult struct {
 type CreationService struct {
 	db       *gorm.DB
 	approval approvalapp.Port
+	audit    AuditWriter
 }
 
 // NewCreationService 创建退款审批申请用例。
-func NewCreationService(db *gorm.DB, approval approvalapp.Port) *CreationService {
-	return &CreationService{db: db, approval: approval}
+func NewCreationService(db *gorm.DB, approval approvalapp.Port, audit AuditWriter) *CreationService {
+	return &CreationService{db: db, approval: approval, audit: audit}
 }
 
 // Execute 在业务写入前校验审批渠道，并在同一事务冻结退款事实和审批事实。
 func (s *CreationService) Execute(ctx context.Context, command CreateCommand) (*CreateResult, error) {
-	if s == nil || s.db == nil || s.approval == nil {
+	if s == nil || s.db == nil || s.approval == nil || s.audit == nil {
 		return nil, errors.New(errors.CodeServiceUnavailable, "退款审批能力未配置")
 	}
-	if command.Refund == nil || command.Refund.OrderID == 0 || command.SubmitterAccountID == 0 ||
+	if command.Refund == nil || command.Order == nil || command.Refund.OrderID == 0 || command.Order.ID != command.Refund.OrderID || command.SubmitterAccountID == 0 ||
 		command.Refund.Creator != command.SubmitterAccountID || strings.TrimSpace(command.Refund.RefundNo) == "" {
 		return nil, errors.New(errors.CodeInvalidParam)
 	}
@@ -100,7 +115,13 @@ func (s *CreationService) Execute(ctx context.Context, command CreateCommand) (*
 		}
 		command.Refund.ApprovalInstanceID = &reference.InstanceID
 		approvalStatus = reference.Status
-		return nil
+		var approval model.ApprovalInstance
+		if err := tx.WithContext(ctx).First(&approval, reference.InstanceID).Error; err != nil {
+			return errors.Wrap(errors.CodeDatabaseError, err, "查询退款审批审计快照失败")
+		}
+		return s.audit.WriteRefundApplication(ctx, tx, ApplicationAudit{
+			Refund: command.Refund, Order: command.Order, Approval: &approval, Submitter: account,
+		})
 	})
 	if err != nil {
 		return nil, err