Add middleware package with auth.go

middleware/auth.go

@@ -0,0 +1,27 @@
+package middleware
+
+import (
+	"git.qowevisa.me/Qowevisa/gonuts/tokens"
+	"git.qowevisa.me/Qowevisa/gonuts/types"
+	"github.com/gin-gonic/gin"
+)
+
+func AuthMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(401, types.ErrorResponse{Message: "Authorization header is required"})
+			c.Abort()
+			return
+		}
+
+		token := authHeader
+		if !tokens.AmIAllowed(token) {
+			c.JSON(401, types.ErrorResponse{Message: "Token is invalid"})
+			c.Abort()
+			return
+		}
+
+		c.Next()
+	}
+}