add token service, sqlite driver and test

internal/token/store_sqlite.go

@@ -0,0 +1,42 @@
+package token
+
+import (
+	"fmt"
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type SQLiteTokenStore struct {
+	db *gorm.DB
+}
+
+type Token struct {
+	TokenID    string    `gorm:"primaryKey"`
+	Expiration time.Time `gorm:"index"`
+}
+
+func NewSQLiteTokenStore(db *gorm.DB) (*SQLiteTokenStore, error) {
+	if db == nil {
+		return nil, fmt.Errorf("db is nil")
+	}
+	return &SQLiteTokenStore{
+		db: db,
+	}, nil
+}
+
+func (s *SQLiteTokenStore) revoke(tokenID string, expiresAt time.Time) error {
+	return s.db.Create(&Token{
+		TokenID:    tokenID,
+		Expiration: expiresAt,
+	}).Error
+}
+
+func (s *SQLiteTokenStore) isRevoked(tokenID string) (bool, error) {
+	var count int64
+	err := s.db.Model(&Token{}).Where("token_id = ?", tokenID).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}