优化申诉仲裁流程和证据展示

backend/internal/modules/dispute/mutation.go

@@ -44,13 +44,27 @@ func (r *Repository) Create(ctx context.Context, userID uint64, orderID uint64,
 			return err
 		}
 		row := model.Dispute{
-			OrderID:      order.ID,
-			InitiatorID:  userID,
-			TargetUserID: targetID,
-			Type:         disputeType(req.Type, isCheckoutDispute),
-			Status:       "open",
-			Description:  req.Description,
-			EvidenceURLS: evidence,
+			OrderID:                  order.ID,
+			InitiatorID:              userID,
+			TargetUserID:             targetID,
+			Type:                     disputeType(req.Type, isCheckoutDispute),
+			Status:                   "open",
+			Description:              req.Description,
+			EvidenceURLS:             evidence,
+			PreviousOrderStatus:      order.Status,
+			PreviousHandoffStatus:    order.HandoffStatus,
+			PreviousSettlementStatus: order.SettlementStatus,
+		}
+		var checkout model.OrderCheckout
+		if isCheckoutDispute {
+			if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
+				Where("order_id = ? AND status IN ?", order.ID, []string{"submitted", "countered"}).
+				Order("id DESC").
+				First(&checkout).Error; err != nil {
+				return err
+			}
+			row.CheckoutID = &checkout.ID
+			row.PreviousCheckoutStatus = checkout.Status
 		}
 		if err := tx.Create(&row).Error; err != nil {
 			return err
@@ -68,13 +82,29 @@ func (r *Repository) Create(ctx context.Context, userID uint64, orderID uint64,
 				updates["renter_rejected_at"] = now
 			}
 			if err := tx.Model(&model.OrderCheckout{}).
-				Where("order_id = ? AND status IN ?", order.ID, []string{"submitted", "countered"}).
+				Where("id = ?", checkout.ID).
 				Updates(updates).Error; err != nil {
 				return err
 			}
 		} else {
 			order.Status = "disputing"
 		}
+		recordType := "dispute_opened"
+		recordContent := "用户发起订单申诉：" + req.Description
+		if isCheckoutDispute {
+			recordType = "checkout_dispute_opened"
+			recordContent = "用户发起结账争议：" + req.Description
+		}
+		record := model.HandoffRecord{
+			OrderID:    order.ID,
+			FromUserID: userID,
+			ToUserID:   targetID,
+			Type:       recordType,
+			Content:    recordContent,
+		}
+		if err := tx.Create(&record).Error; err != nil {
+			return err
+		}
 		if err := tx.Save(&order).Error; err != nil {
 			return err
 		}