package auth

import (
	"context"
	"time"

	"github.com/golang-jwt/jwt"
)

// Claims represents the JWT claims structure
type Claims struct {
	jwt.StandardClaims
	ClientID string `json:"client_id"`
	Role     string `json:"role"`
}

// JWTService implements the auth.Service interface using JWT tokens
type JWTService struct {
	privateKey    []byte
	tokenDuration time.Duration
	tokenStore    TokenStore // Interface for blacklist storage
}

// TokenStore defines storage operations for token management
type TokenStore interface {
	IsBlacklisted(ctx context.Context, token string) (bool, error)
	Blacklist(ctx context.Context, token string, expiry time.Time) error
}

// NewJWTService creates a new JWT-based auth service
func NewJWTService(privateKey []byte, tokenDuration time.Duration, store TokenStore) Service {
	return &JWTService{
		privateKey:    privateKey,
		tokenDuration: tokenDuration,
		tokenStore:    store,
	}
}

// Implementation of Service interface methods...
func (s *JWTService) GenerateToken(ctx context.Context, clientID string) (string, error) {
	// Implementation here
	return "", nil
}

func (s *JWTService) ValidateToken(ctx context.Context, token string) (string, error) {
	// Implementation here
	return "", nil
}

func (s *JWTService) RefreshToken(ctx context.Context, token string) (string, error) {
	// Implementation here
	return "", nil
}

func (s *JWTService) Logout(ctx context.Context, token string) error {
	// Implementation here
	return nil
}