Init

internal/api/middleware/auth.go

@@ -0,0 +1,116 @@
+package middleware
+
+import (
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/golang-jwt/jwt/v4"
+)
+
+var jwtSecret = []byte(os.Getenv("JWT_SECRET"))
+
+type Claims struct {
+	UserID string `json:"user_id"`
+	Role   string `json:"role"`
+	jwt.RegisteredClaims
+}
+
+func AuthMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+
+		var tokenString string
+
+		// 🔥 1. Try cookie first (NEW)
+		cookie, err := c.Cookie("auth_token")
+		if err == nil && cookie != "" {
+			tokenString = cookie
+		}
+
+		// 🔥 2. Fallback to Authorization header (for API tools / future SPA)
+		if tokenString == "" {
+			authHeader := c.GetHeader("Authorization")
+
+			if authHeader != "" {
+				parts := strings.Split(authHeader, " ")
+				if len(parts) == 2 && parts[0] == "Bearer" {
+					tokenString = parts[1]
+				}
+			}
+		}
+
+		// ❌ No token at all
+		if tokenString == "" {
+			abortUnauthorized(c)
+			return
+		}
+
+		// 🔐 Parse JWT
+		claims := &Claims{}
+		token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
+			if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+				return nil, jwt.ErrTokenSignatureInvalid
+			}
+			return jwtSecret, nil
+		})
+
+		if err != nil || !token.Valid {
+			abortUnauthorized(c)
+			return
+		}
+
+		c.Set("user_id", claims.UserID)
+		c.Set("role", claims.Role)
+
+		c.Next()
+	}
+}
+
+func abortUnauthorized(c *gin.Context) {
+	if strings.Contains(c.GetHeader("Accept"), "text/html") {
+		c.Redirect(http.StatusFound, "/login")
+	} else {
+		c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
+			"error": "unauthorized",
+		})
+	}
+	c.Abort()
+}
+
+func RequireRole(roles ...string) gin.HandlerFunc {
+	return func(c *gin.Context) {
+
+		roleValue, exists := c.Get("role")
+		if !exists {
+			abortForbidden(c)
+			return
+		}
+
+		userRole, ok := roleValue.(string)
+		if !ok {
+			abortForbidden(c)
+			return
+		}
+
+		for _, allowed := range roles {
+			if userRole == allowed {
+				c.Next()
+				return
+			}
+		}
+
+		abortForbidden(c)
+	}
+}
+
+func abortForbidden(c *gin.Context) {
+	if strings.Contains(c.GetHeader("Accept"), "text/html") {
+		c.Redirect(http.StatusFound, "/")
+	} else {
+		c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
+			"error": "forbidden",
+		})
+	}
+	c.Abort()
+}

internal/api/middleware/logging.go

@@ -0,0 +1 @@
+package middleware