first commit

internal/middleware/jwt_middleware.go

@@ -0,0 +1,77 @@
+package middleware
+
+import (
+	services "api-service/internal/services/auth"
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// JWTAuthMiddleware validates JWT tokens generated by our auth service
+func JWTAuthMiddleware(authService *services.AuthService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header missing"})
+			return
+		}
+
+		parts := strings.SplitN(authHeader, " ", 2)
+		if len(parts) != 2 || strings.ToLower(parts[0]) != "bearer" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header format must be Bearer {token}"})
+			return
+		}
+
+		tokenString := parts[1]
+
+		// Validate token
+		claims, err := authService.ValidateToken(tokenString)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
+			return
+		}
+
+		// Set user info in context
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+		c.Set("email", claims.Email)
+		c.Set("role", claims.Role)
+
+		c.Next()
+	}
+}
+
+// OptionalAuthMiddleware allows both authenticated and unauthenticated requests
+func OptionalAuthMiddleware(authService *services.AuthService) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			// No token provided, but continue
+			c.Next()
+			return
+		}
+
+		parts := strings.SplitN(authHeader, " ", 2)
+		if len(parts) != 2 || strings.ToLower(parts[0]) != "bearer" {
+			c.Next()
+			return
+		}
+
+		tokenString := parts[1]
+		claims, err := authService.ValidateToken(tokenString)
+		if err != nil {
+			// Invalid token, but continue (don't abort)
+			c.Next()
+			return
+		}
+
+		// Set user info in context
+		c.Set("user_id", claims.UserID)
+		c.Set("username", claims.Username)
+		c.Set("email", claims.Email)
+		c.Set("role", claims.Role)
+
+		c.Next()
+	}
+}