608 lines
18 KiB
Go
608 lines
18 KiB
Go
package dispute
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import (
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"time"
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"hfb_sys/backend/internal/auditlog"
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"hfb_sys/backend/internal/model"
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"hfb_sys/backend/internal/modules/notification"
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"hfb_sys/backend/internal/modules/wallet"
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"hfb_sys/backend/pkg/money"
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"gorm.io/datatypes"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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)
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type Repository struct {
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db *gorm.DB
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refundFunc RefundFunc
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}
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// RefundFunc 由 payment 模块注入，避免 dispute 与 payment 形成循环依赖。
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type RefundFunc func(orderID uint64, refundAmountCent int64, bizType string, remark string) (status string, err error)
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type refundAction struct {
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OrderID uint64
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RefundAmountCent int64
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BizType string
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Remark string
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}
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func NewRepository(db *gorm.DB) *Repository {
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return &Repository{db: db}
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}
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func (r *Repository) SetRefundFunc(fn RefundFunc) {
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r.refundFunc = fn
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}
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func (r *Repository) Create(userID uint64, orderID uint64, req CreateRequest) (*DisputeDTO, error) {
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var createdID uint64
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err := r.db.Transaction(func(tx *gorm.DB) error {
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var order model.RentalOrder
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&order, orderID).Error; err != nil {
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return err
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}
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if order.RenterID != userID && order.OwnerID != userID {
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return ErrPermissionDenied
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}
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if order.Status == "completed" || order.Status == "cancelled" || order.Status == "closed" {
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return ErrInvalidDispute
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}
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isCheckoutDispute := order.Status == "pending_checkout_confirm" || order.Status == "pending_checkout_accept"
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var count int64
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if err := tx.Model(&model.Dispute{}).
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Where("order_id = ? AND status IN ?", order.ID, []string{"open", "processing"}).
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Count(&count).Error; err != nil {
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return err
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}
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if count > 0 {
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return ErrDisputeExists
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}
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targetID := order.OwnerID
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if userID == order.OwnerID {
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targetID = order.RenterID
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}
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evidence, err := marshalEvidence(req.EvidenceURLS)
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if err != nil {
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return err
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}
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row := model.Dispute{
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OrderID: order.ID,
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InitiatorID: userID,
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TargetUserID: targetID,
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Type: disputeType(req.Type, isCheckoutDispute),
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Status: "open",
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Description: req.Description,
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EvidenceURLS: evidence,
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}
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if err := tx.Create(&row).Error; err != nil {
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return err
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}
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if isCheckoutDispute {
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now := time.Now()
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order.Status = "checkout_disputing"
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order.HandoffStatus = "checkout_disputed"
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order.SettlementStatus = "disputed"
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updates := map[string]any{
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"status": "disputed",
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"updated_at": now,
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}
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if userID == order.RenterID {
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updates["renter_rejected_at"] = now
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}
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if err := tx.Model(&model.OrderCheckout{}).
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Where("order_id = ? AND status IN ?", order.ID, []string{"submitted", "countered"}).
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Updates(updates).Error; err != nil {
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return err
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}
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} else {
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order.Status = "disputing"
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}
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if err := tx.Save(&order).Error; err != nil {
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return err
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}
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disputeID := row.ID
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title := "订单进入申诉"
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content := "对方已发起申诉，请等待客服仲裁或补充沟通记录。"
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if isCheckoutDispute {
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title = "订单进入结账争议"
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content = "对方已发起结账争议，请等待客服仲裁或补充结账证据。"
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}
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if err := notification.Append(tx,
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notification.Entry{
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UserID: targetID,
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Type: "dispute",
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Title: title,
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Content: content,
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BizType: "dispute",
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BizID: &disputeID,
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},
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notification.Entry{
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UserID: userID,
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Type: "dispute",
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Title: "申诉已提交",
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Content: "申诉已进入待处理状态，客服仲裁后会通知双方。",
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BizType: "dispute",
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BizID: &disputeID,
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},
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); err != nil {
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return err
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}
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createdID = row.ID
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return nil
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})
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if err != nil {
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return nil, err
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}
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return r.FindForUser(userID, createdID)
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}
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func (r *Repository) ListForUser(userID uint64, page, pageSize int) (*PaginatedResult, error) {
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conditions := r.db.Model(&model.Dispute{}).Where("initiator_id = ? OR target_user_id = ?", userID, userID)
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var total int64
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if err := conditions.Count(&total).Error; err != nil {
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return nil, err
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}
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offset := (page - 1) * pageSize
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var rows []disputeRow
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err := r.baseQuery().
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Where("d.initiator_id = ? OR d.target_user_id = ?", userID, userID).
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Order("d.id DESC").
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Offset(offset).Limit(pageSize).
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Scan(&rows).Error
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if err != nil {
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return nil, err
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}
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return &PaginatedResult{Items: toDTOs(rows), Total: total, Page: page, PageSize: pageSize}, nil
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}
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func (r *Repository) FindForUser(userID uint64, id uint64) (*DisputeDTO, error) {
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var row disputeRow
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if err := r.baseQuery().
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Where("d.id = ? AND (d.initiator_id = ? OR d.target_user_id = ?)", id, userID, userID).
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First(&row).Error; err != nil {
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return nil, err
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}
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dto := row.toDTO()
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return &dto, nil
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}
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func (r *Repository) ListAdmin(page, pageSize int) (*PaginatedResult, error) {
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var total int64
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if err := r.db.Model(&model.Dispute{}).Count(&total).Error; err != nil {
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return nil, err
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}
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offset := (page - 1) * pageSize
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var rows []disputeRow
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err := r.baseQuery().Order("d.id DESC").Offset(offset).Limit(pageSize).Scan(&rows).Error
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if err != nil {
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return nil, err
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}
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return &PaginatedResult{Items: toDTOs(rows), Total: total, Page: page, PageSize: pageSize}, nil
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}
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func (r *Repository) Arbitrate(adminID uint64, id uint64, req ArbitrateRequest, meta AuditMeta) (*DisputeDTO, error) {
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var refund *refundAction
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err := r.db.Transaction(func(tx *gorm.DB) error {
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var row model.Dispute
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&row, id).Error; err != nil {
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return err
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}
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if row.Status != "open" && row.Status != "processing" {
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return ErrDisputeCannotHandle
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}
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var order model.RentalOrder
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&order, row.OrderID).Error; err != nil {
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return err
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}
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var listing model.RentalListing
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
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return err
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}
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var account model.GameAccount
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
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return err
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}
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beforeOrderStatus := order.Status
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beforeHandoffStatus := order.HandoffStatus
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beforeSettlementStatus := order.SettlementStatus
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beforeListingStatus := listing.Status
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beforeAccountStatus := account.Status
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frozenBalance, err := renterFrozenBalance(tx, order.RenterID)
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if err != nil {
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return err
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}
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settlement, err := buildArbitrationSettlement(order, req, frozenBalance)
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if err != nil {
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return err
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}
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now := time.Now()
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row.Status = "resolved"
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row.ArbitrationResult = req.Result
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row.ArbitrationRemark = req.Remark
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row.HandledBy = &adminID
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row.HandledAt = &now
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order.Status = arbitrateOrderStatus(req.Result)
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order.SettlementStatus = "arbitrated"
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order.SettledAt = &now
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order.OwnerSettledAt = &now
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if order.HandoffStatus != "cancelled" && order.HandoffStatus != "returned" {
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order.HandoffStatus = "arbitrated"
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}
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if req.Result == "order_close" {
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listing.Status = "offline"
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account.Status = "offline"
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} else if req.Result == "mark_abnormal" {
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listing.Status = "abnormal"
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account.Status = "abnormal"
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} else {
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listing.Status = "published"
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account.Status = "published"
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}
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if err := wallet.AppendEntries(tx, settlement.Entries...); err != nil {
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return err
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}
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if settlement.RenterRefundAmount > 0 {
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refundCent := int64(math.Round(settlement.RenterRefundAmount * 100))
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action, err := r.prepareRefund(&order, refundCent, "arbitration_refund", "仲裁退款原路退还")
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if err != nil {
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return err
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}
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refund = action
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}
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if err := tx.Save(&row).Error; err != nil {
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return err
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}
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if err := tx.Save(&order).Error; err != nil {
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return err
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}
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if err := tx.Save(&listing).Error; err != nil {
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return err
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}
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if err := tx.Save(&account).Error; err != nil {
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return err
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}
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handoffRecord := model.HandoffRecord{
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OrderID: order.ID,
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FromUserID: adminID,
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ToUserID: order.RenterID,
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Type: "admin_arbitration",
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Content: buildArbitrationHandoffContent(req, settlement),
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}
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if err := tx.Create(&handoffRecord).Error; err != nil {
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return err
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}
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disputeID := row.ID
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if err := appendAuditLog(tx, adminID, "dispute.arbitrate", "dispute", row.ID, meta, map[string]any{
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"dispute_id": row.ID,
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"order_id": order.ID,
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"order_no": order.OrderNo,
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"result": req.Result,
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"remark": req.Remark,
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"input_amount": req.Amount,
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"renter_refund_amount": settlement.RenterRefundAmount,
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"owner_income_amount": settlement.OwnerIncomeAmount,
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"deposit_deduct_amount": settlement.DepositDeductAmount,
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"before_order_status": beforeOrderStatus,
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"after_order_status": order.Status,
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"before_handoff_status": beforeHandoffStatus,
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"after_handoff_status": order.HandoffStatus,
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"before_settlement_status": beforeSettlementStatus,
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"after_settlement_status": order.SettlementStatus,
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"before_listing_status": beforeListingStatus,
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"after_listing_status": listing.Status,
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"before_account_status": beforeAccountStatus,
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"after_account_status": account.Status,
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}); err != nil {
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return err
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}
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if err := notification.Append(tx,
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notification.Entry{
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UserID: order.RenterID,
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Type: "arbitration",
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Title: "申诉仲裁已完成",
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Content: "客服已给出仲裁结果，请在订单和申诉记录中查看处理说明。",
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BizType: "dispute",
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BizID: &disputeID,
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},
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notification.Entry{
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UserID: order.OwnerID,
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Type: "arbitration",
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Title: "申诉仲裁已完成",
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Content: "客服已给出仲裁结果，请在订单和申诉记录中查看处理说明。",
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BizType: "dispute",
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BizID: &disputeID,
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},
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); 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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if err != nil {
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return nil, err
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}
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r.startRefundBestEffort(refund)
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var row disputeRow
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if err := r.baseQuery().Where("d.id = ?", id).First(&row).Error; err != nil {
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return nil, err
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}
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dto := row.toDTO()
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return &dto, nil
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}
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type arbitrationSettlement struct {
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Entries []wallet.Entry
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RenterRefundAmount float64
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OwnerIncomeAmount float64
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DepositDeductAmount float64
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}
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func buildArbitrationSettlement(order model.RentalOrder, req ArbitrateRequest, renterFrozenBalance float64) (arbitrationSettlement, error) {
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rentAmount := float64(order.RentAmountCent) / 100
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if rentAmount <= 0 {
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rentAmount = order.RentAmount
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}
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depositAmount := float64(order.DepositAmountCent) / 100
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if depositAmount <= 0 {
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depositAmount = order.DepositAmount
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}
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ownerRentAmount := float64(order.OwnerRentAmountCent) / 100
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if ownerRentAmount <= 0 || ownerRentAmount > rentAmount {
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ownerRentAmount = rentAmount
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}
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total := roundMoney(rentAmount + depositAmount)
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ownerRentAmount = roundMoney(ownerRentAmount)
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settlement := arbitrationSettlement{}
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orderID := order.ID
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releaseFrozenAmount := minMoney(total, roundMoney(renterFrozenBalance))
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if releaseFrozenAmount > 0 {
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settlement.Entries = append(settlement.Entries, wallet.Entry{
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UserID: order.RenterID,
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OrderID: &orderID,
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Direction: "out",
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AmountCent: int64(math.Round(releaseFrozenAmount * 100)),
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BalanceType: "frozen",
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BizType: "arbitration_release_frozen",
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BizNo: order.OrderNo,
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Remark: "仲裁释放冻结金额",
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})
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}
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addRenterRefund := func(amount float64, remark string) {
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if amount <= 0 {
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return
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}
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settlement.RenterRefundAmount += amount
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}
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addOwnerIncome := func(amount float64, remark string) {
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if amount <= 0 {
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return
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}
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settlement.OwnerIncomeAmount += amount
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settlement.Entries = append(settlement.Entries, wallet.Entry{
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UserID: order.OwnerID,
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OrderID: &orderID,
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Direction: "in",
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AmountCent: int64(math.Round(amount * 100)),
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BalanceType: "available",
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BizType: "arbitration_owner_income",
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BizNo: order.OrderNo,
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Remark: remark,
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})
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}
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switch req.Result {
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case "full_refund":
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addRenterRefund(total, "仲裁全额退款")
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case "partial_refund":
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req.Amount = roundMoney(req.Amount)
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if req.Amount <= 0 || req.Amount > total {
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return settlement, ErrInvalidDispute
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}
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addRenterRefund(req.Amount, "仲裁部分退款")
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addOwnerIncome(minMoney(total-req.Amount, ownerRentAmount+depositAmount), "仲裁剩余金额结算给号主")
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case "release_deposit":
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addOwnerIncome(ownerRentAmount, "仲裁确认订单金额结算给号主")
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addRenterRefund(depositAmount, "仲裁释放押金给租客")
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case "deduct_deposit", "compensate_owner":
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deductAmount := roundMoney(req.Amount)
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if deductAmount <= 0 {
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deductAmount = depositAmount
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}
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if deductAmount > depositAmount {
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return settlement, ErrInvalidDispute
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}
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settlement.DepositDeductAmount = deductAmount
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addOwnerIncome(ownerRentAmount+deductAmount, "仲裁订单金额及押金赔付结算给号主")
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addRenterRefund(depositAmount-deductAmount, "仲裁退回剩余押金给租客")
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case "order_close":
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// Only release frozen funds. No available-balance settlement happens in development mode.
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case "mark_abnormal":
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// 标记异常只释放冻结账务，后续由客服继续线下复核。
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default:
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return settlement, ErrInvalidDispute
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}
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return settlement, nil
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}
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func (r *Repository) prepareRefund(order *model.RentalOrder, amountCent int64, bizType string, remark string) (*refundAction, error) {
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if amountCent <= 0 {
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return nil, nil
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}
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if r.refundFunc == nil {
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return nil, ErrDependencyUnavailable
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}
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order.RefundStatus = "pending"
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order.RefundAmountCent = amountCent
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order.RefundedAt = nil
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return &refundAction{
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OrderID: order.ID,
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RefundAmountCent: amountCent,
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BizType: bizType,
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Remark: remark,
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}, nil
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}
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func (r *Repository) startRefundBestEffort(action *refundAction) {
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if action == nil || r.refundFunc == nil {
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return
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}
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_, _ = r.refundFunc(action.OrderID, action.RefundAmountCent, action.BizType, action.Remark)
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}
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func renterFrozenBalance(tx *gorm.DB, renterID uint64) (float64, error) {
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var account model.WalletAccount
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err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
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Where("user_id = ?", renterID).
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First(&account).Error
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return 0, nil
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}
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if err != nil {
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return 0, err
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}
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return account.FrozenBalance, nil
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}
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// minMoney 返回较小金额（角精度）
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func minMoney(a float64, b float64) float64 {
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return money.Min(a, b)
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}
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// roundMoney 使用统一的角精度（0.1元）
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func roundMoney(value float64) float64 {
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return money.Round(value)
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}
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func (r *Repository) baseQuery() *gorm.DB {
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return r.db.Table("disputes AS d").
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Select("d.*, o.order_no, l.listing_no, a.title").
|
|
Joins("JOIN rental_orders AS o ON o.id = d.order_id").
|
|
Joins("JOIN rental_listings AS l ON l.id = o.listing_id").
|
|
Joins("JOIN game_accounts AS a ON a.id = o.account_id")
|
|
}
|
|
|
|
type disputeRow struct {
|
|
model.Dispute
|
|
OrderNo string
|
|
ListingNo string
|
|
Title string
|
|
}
|
|
|
|
func (row disputeRow) toDTO() DisputeDTO {
|
|
return DisputeDTO{
|
|
ID: row.ID,
|
|
OrderID: row.OrderID,
|
|
OrderNo: row.OrderNo,
|
|
ListingNo: row.ListingNo,
|
|
Title: row.Title,
|
|
InitiatorID: row.InitiatorID,
|
|
TargetUserID: row.TargetUserID,
|
|
Type: row.Type,
|
|
Status: row.Status,
|
|
Description: row.Description,
|
|
EvidenceURLS: row.EvidenceURLS,
|
|
ArbitrationResult: row.ArbitrationResult,
|
|
ArbitrationRemark: row.ArbitrationRemark,
|
|
HandledBy: row.HandledBy,
|
|
HandledAt: row.HandledAt,
|
|
CreatedAt: row.CreatedAt,
|
|
UpdatedAt: row.UpdatedAt,
|
|
}
|
|
}
|
|
|
|
func toDTOs(rows []disputeRow) []DisputeDTO {
|
|
items := make([]DisputeDTO, 0, len(rows))
|
|
for _, row := range rows {
|
|
items = append(items, row.toDTO())
|
|
}
|
|
return items
|
|
}
|
|
|
|
func marshalEvidence(urls []string) (datatypes.JSON, error) {
|
|
if len(urls) == 0 {
|
|
return datatypes.JSON([]byte("[]")), nil
|
|
}
|
|
raw, err := json.Marshal(urls)
|
|
return datatypes.JSON(raw), err
|
|
}
|
|
|
|
func arbitrateOrderStatus(result string) string {
|
|
switch result {
|
|
case "full_refund", "partial_refund", "order_close":
|
|
return "closed"
|
|
case "mark_abnormal":
|
|
return "abnormal"
|
|
default:
|
|
return "completed"
|
|
}
|
|
}
|
|
|
|
func buildArbitrationHandoffContent(req ArbitrateRequest, settlement arbitrationSettlement) string {
|
|
content := fmt.Sprintf("客服仲裁结果：%s", arbitrationResultLabel(req.Result))
|
|
if req.Remark != "" {
|
|
content += "\n处理说明：" + req.Remark
|
|
}
|
|
if settlement.RenterRefundAmount > 0 {
|
|
content += fmt.Sprintf("\n退款给租客：¥%.2f", settlement.RenterRefundAmount)
|
|
}
|
|
if settlement.OwnerIncomeAmount > 0 {
|
|
content += fmt.Sprintf("\n结算给号主：¥%.2f", settlement.OwnerIncomeAmount)
|
|
}
|
|
if settlement.DepositDeductAmount > 0 {
|
|
content += fmt.Sprintf("\n押金扣除：¥%.2f", settlement.DepositDeductAmount)
|
|
}
|
|
return content
|
|
}
|
|
|
|
func arbitrationResultLabel(result string) string {
|
|
switch result {
|
|
case "full_refund":
|
|
return "全额退款"
|
|
case "partial_refund":
|
|
return "部分退款"
|
|
case "deduct_deposit":
|
|
return "扣押金"
|
|
case "release_deposit":
|
|
return "释放押金"
|
|
case "compensate_owner":
|
|
return "赔付号主"
|
|
case "order_close":
|
|
return "关闭订单"
|
|
case "mark_abnormal":
|
|
return "标记异常"
|
|
default:
|
|
return result
|
|
}
|
|
}
|
|
|
|
func disputeType(input string, isCheckoutDispute bool) string {
|
|
if isCheckoutDispute {
|
|
return "checkout_dispute"
|
|
}
|
|
return input
|
|
}
|
|
|
|
func appendAuditLog(tx *gorm.DB, actorID uint64, action string, bizType string, bizID uint64, meta AuditMeta, detail map[string]any) error {
|
|
return auditlog.Append(tx, auditlog.Entry{
|
|
ActorType: "admin",
|
|
ActorID: actorID,
|
|
Action: action,
|
|
BizType: bizType,
|
|
BizID: &bizID,
|
|
Meta: meta,
|
|
Detail: detail,
|
|
})
|
|
}
|
|
|
|
func IsNotFound(err error) bool {
|
|
return errors.Is(err, gorm.ErrRecordNotFound)
|
|
}
|