renommage lassistanoque

backend/internal/adapter/security/jwt.go

@@ -0,0 +1,129 @@
+package security
+
+import (
+	"errors"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/labstack/echo/v5"
+	"trankilou.fr/lassistanoque/backend/internal/config"
+	"trankilou.fr/lassistanoque/backend/internal/domain"
+	"trankilou.fr/lassistanoque/backend/internal/service/auth"
+)
+
+// Claims personnalisées embarquées dans le JWT.
+type Claims struct {
+	UserID        string `json:"uid"`
+	Email         string `json:"email"`
+	Firstname     string `json:"firstname"`
+	Lastname      string `json:"lastname"`
+	Administrator bool   `json:"administrator"`
+	jwt.RegisteredClaims
+}
+
+type JwtTokenManager struct {
+	secret     []byte
+	accessTTL  time.Duration
+	refreshTTL time.Duration
+	issuer     string
+}
+
+func NewJwtTokenManager(accessTTL, refreshTTL time.Duration, issuer string) *JwtTokenManager {
+	cfg := config.GetConfig()
+	return &JwtTokenManager{
+		secret:     []byte(cfg.JWTSecret),
+		accessTTL:  accessTTL,
+		refreshTTL: refreshTTL,
+		issuer:     issuer,
+	}
+}
+
+// GenerateAccessToken crée un JWT de courte durée (ex: 15 min) utilisé
+// pour authentifier les requêtes API.
+func (tm *JwtTokenManager) GenerateAccessToken(user *domain.User) (string, time.Time, error) {
+	expiresAt := time.Now().Add(tm.accessTTL)
+	claims := Claims{
+		UserID:        user.ID,
+		Email:         user.Email,
+		Firstname:     user.Firstname,
+		Lastname:      user.Lastname,
+		Administrator: user.Administrator,
+		RegisteredClaims: jwt.RegisteredClaims{
+			Issuer:    tm.issuer,
+			Subject:   user.ID,
+			ExpiresAt: jwt.NewNumericDate(expiresAt),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	signed, err := token.SignedString(tm.secret)
+	return signed, expiresAt, err
+}
+
+// GenerateRefreshToken crée un token de longue durée (ex: 7 jours) utilisé
+// uniquement pour obtenir un nouvel access token, jamais pour appeler l'API directement.
+func (tm *JwtTokenManager) GenerateRefreshToken(userID string) (string, time.Time, error) {
+	expiresAt := time.Now().Add(tm.refreshTTL)
+	claims := jwt.RegisteredClaims{
+		Issuer:    tm.issuer,
+		Subject:   userID,
+		ExpiresAt: jwt.NewNumericDate(expiresAt),
+		IssuedAt:  jwt.NewNumericDate(time.Now()),
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	signed, err := token.SignedString(tm.secret)
+	return signed, expiresAt, err
+}
+
+// ParseAndValidate décode et vérifie la signature + l'expiration d'un JWT.
+func (tm *JwtTokenManager) ParseAndValidate(tokenString string) (*domain.User, error) {
+	claims := &Claims{}
+	token, err := jwt.ParseWithClaims(tokenString, claims, func(t *jwt.Token) (interface{}, error) {
+		if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, errors.New("méthode de signature inattendue")
+		}
+		return tm.secret, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	if !token.Valid {
+		return nil, errors.New("token invalide")
+	}
+	return &domain.User{
+		ID:            claims.UserID,
+		Email:         claims.Email,
+		Firstname:     claims.Firstname,
+		Lastname:      claims.Lastname,
+		Administrator: claims.Administrator,
+	}, nil
+}
+
+func (tm *JwtTokenManager) TokenMiddleware(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c *echo.Context) error {
+		header := c.Request().Header.Get("Authorization")
+		if header == "" {
+			return echo.NewHTTPError(http.StatusUnauthorized, "en-tête Authorization manquant")
+		}
+
+		parts := strings.SplitN(header, " ", 2)
+		if len(parts) != 2 || parts[0] != "Bearer" {
+			return echo.NewHTTPError(http.StatusUnauthorized, "format attendu: Bearer <token>")
+		}
+
+		claims, err := tm.ParseAndValidate(parts[1])
+		if err != nil {
+			return echo.NewHTTPError(http.StatusUnauthorized, "token invalide ou expiré")
+		}
+
+		// Rend les infos disponibles aux handlers suivants via c.Get(...)
+		c.Set(auth.ContextUserIDKey, claims.ID)
+		c.Set(auth.ContextEmailKey, claims.Email)
+		c.Set(auth.ContextNameKey, claims.Firstname+" "+claims.Lastname)
+		c.Set(auth.ContextAdminKey, claims.Administrator)
+
+		return next(c)
+	}
+}