first commit

api/middlewares/auth_middleware.go

@@ -0,0 +1,47 @@
+package middlewares
+
+import (
+	"gauth-central/internal/services"
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func AuthMiddleware(jwtService *services.JWTService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header is required"})
+			return
+		}
+
+		tokenString := strings.Replace(authHeader, "Bearer ", "", 1)
+		claims, err := jwtService.ValidateToken(tokenString)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token: " + err.Error()})
+			return
+		}
+
+		c.Set("user_id", claims.UserID)
+		c.Set("email", claims.Email)
+		c.Next()
+	}
+}
+
+// OptionalAuthMiddleware checks for a token but doesn't abort if it's missing or invalid.
+// It sets user_id if a valid token is present.
+func OptionalAuthMiddleware(jwtService *services.JWTService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader != "" {
+			tokenString := strings.Replace(authHeader, "Bearer ", "", 1)
+			claims, err := jwtService.ValidateToken(tokenString)
+			if err == nil {
+				c.Set("user_id", claims.UserID)
+				c.Set("email", claims.Email)
+			}
+		}
+		c.Next()
+	}
+}