add init functions

internal/token/service.go

@@ -10,9 +10,13 @@ import (
 type TokenStore interface {
 	revoke(tokenID string, expiresAt time.Time) error
 	isRevoked(tokenID string) (bool, error)
+
+	init() error
 }
 
 type Service struct {
+	initialized bool
+
 	cfg   *config.Auth
 	store TokenStore
 }
@@ -27,6 +31,24 @@ func NewTokenService(cfg *config.Auth, store TokenStore) (*Service, error) {
 	return &Service{cfg: cfg, store: store}, nil
 }
 
+func (s *Service) isInitialized() bool {
+	return s.initialized
+}
+
+func (s *Service) Init() error {
+	if s.isInitialized() {
+		return nil
+	}
+
+	err := s.store.init()
+	if err != nil {
+		return fmt.Errorf("failed to initialize token store: %w", err)
+	}
+
+	s.initialized = true
+	return nil
+}
+
 func (s *Service) Revoke(jti string, exp time.Time) error {
 	return s.store.revoke(jti, exp)
 }