58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package services
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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UserID int `json:"user_id"`
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Email string `json:"email"`
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jwt.RegisteredClaims
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}
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type AuthService struct {
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secretKey []byte
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}
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func NewAuthService(secret string) *AuthService {
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return &AuthService{secretKey: []byte(secret)}
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}
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func (s *AuthService) GenerateToken(userID int, email string) (string, error) {
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claims := Claims{
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UserID: userID,
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Email: email,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodES256, claims)
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return token.SignedString(s.secretKey)
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}
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func (s *AuthService) ValidateToken(tokenString string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, errors.New("unexpected signing method")
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}
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return s.secretKey, 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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if claims, ok := token.Claims.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, errors.New("invalid token")
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}
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