wip

mangezmieux-backend/internal/jwt/service.go

@@ -0,0 +1,78 @@
+package jwt
+
+import (
+	"mangezmieux-backend/internal/responses"
+	"time"
+
+	jwtLib "github.com/golang-jwt/jwt/v5"
+)
+
+type Service struct {
+	SecretKey string
+}
+
+func NewService() *Service {
+	return &Service{SecretKey: "hard-coded-temp"}
+}
+
+type Claims struct {
+	ID string `json:"username"`
+	jwtLib.RegisteredClaims
+}
+
+func (s *Service) ValidateToken(token string) (*Claims, error) {
+	claims := &Claims{}
+	tkn, err := jwtLib.ParseWithClaims(token, claims, func(token *jwtLib.Token) (any, error) {
+		return []byte(s.SecretKey), nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	if !tkn.Valid {
+		return nil, err
+	}
+
+	return claims, nil
+}
+
+func (s *Service) GenerateJWTToken(userId string) (string, error) {
+	expirationTime := time.Now().Add(10 * time.Minute)
+
+	claims := &Claims{
+		ID: userId,
+		RegisteredClaims: jwtLib.RegisteredClaims{
+			// In JWT, the expiry time is expressed as unix milliseconds
+			ExpiresAt: jwtLib.NewNumericDate(expirationTime),
+		},
+	}
+	token := jwtLib.NewWithClaims(jwtLib.SigningMethodHS256, claims)
+	// Create the JWT string
+	tokenString, err := token.SignedString([]byte(s.SecretKey))
+	if err != nil {
+		return "", &responses.ErrInternalServer
+	}
+	return tokenString, nil
+}
+
+func (s *Service) Refresh(oldToken string) (string, error) {
+	claims := &Claims{}
+	tkn, err := jwtLib.ParseWithClaims(oldToken, claims, func(token *jwtLib.Token) (any, error) {
+		return []byte(s.SecretKey), nil
+	})
+	if err != nil {
+		return "", err
+	}
+
+	if !tkn.Valid {
+		return "", err
+	}
+
+	// Now, create a new token for the current use, with a renewed expiration time
+	expirationTime := time.Now().Add(10 * time.Minute)
+	claims.ExpiresAt = jwtLib.NewNumericDate(expirationTime)
+	token := jwtLib.NewWithClaims(jwtLib.SigningMethodHS256, claims)
+	tokenString, err := token.SignedString([]byte(s.SecretKey))
+	return tokenString, nil
+
+}

mangezmieux-backend/internal/jwt/setup.go

@@ -0,0 +1,16 @@
+package jwt
+
+import (
+	"mangezmieux-backend/internal/injector"
+)
+
+const JWTKey = "JWT"
+
+func Setup(inj *injector.Injector) {
+
+	// build components
+	service := NewService()
+
+	// register provided components
+	inj.Set(JWTKey, service)
+}