第 3 阶段：租号发布与审核

backend/internal/modules/listing/service.go

@@ -0,0 +1,97 @@
+package listing
+
+import (
+	"errors"
+)
+
+var (
+	ErrDependencyUnavailable = errors.New("dependency unavailable")
+	ErrInvalidInput          = errors.New("invalid listing input")
+	ErrListingLocked         = errors.New("listing locked")
+)
+
+type Service struct {
+	repo *Repository
+}
+
+func NewService(repo *Repository) *Service {
+	return &Service{repo: repo}
+}
+
+func (s *Service) Create(ownerID uint64, req CreateRequest) (*ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	if err := validateRequest(req); err != nil {
+		return nil, err
+	}
+	return s.repo.Create(ownerID, req)
+}
+
+func (s *Service) Update(ownerID uint64, id uint64, req UpdateRequest) (*ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	if err := validateRequest(req); err != nil {
+		return nil, err
+	}
+	return s.repo.Update(ownerID, id, req)
+}
+
+func (s *Service) SubmitReview(ownerID uint64, id uint64) (*ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.SubmitReview(ownerID, id)
+}
+
+func (s *Service) Offline(ownerID uint64, id uint64) error {
+	if s.repo == nil {
+		return ErrDependencyUnavailable
+	}
+	return s.repo.Offline(ownerID, id)
+}
+
+func (s *Service) ListPublic() ([]ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.ListPublic()
+}
+
+func (s *Service) ListMine(ownerID uint64) ([]ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.ListMine(ownerID)
+}
+
+func (s *Service) FindPublic(id uint64) (*ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.FindPublic(id)
+}
+
+func (s *Service) FindMine(ownerID uint64, id uint64) (*ListingDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.FindMine(ownerID, id)
+}
+
+func validateRequest(req CreateRequest) error {
+	if req.Title == "" || req.ServerRegion == "" || req.LoginPlatform == "" {
+		return ErrInvalidInput
+	}
+	if req.PriceHourly <= 0 || req.DepositAmount < 0 {
+		return ErrInvalidInput
+	}
+	if req.MinRentHours <= 0 || req.MaxRentHours < req.MinRentHours {
+		return ErrInvalidInput
+	}
+	if req.HafCoinAmount < 0 {
+		return ErrInvalidInput
+	}
+	return nil
+}