From 0b354f22d389d59f63755c30fee17e961f5fd3c7 Mon Sep 17 00:00:00 2001
From: serr <sc7227484@gmail.com>
Date: Sat, 5 Apr 2025 22:13:37 +0300
Subject: [PATCH] middlewares system added

---
 main.go                        | 11 +++++++---
 mvc/controllers/middlewares.go | 38 ++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 mvc/controllers/middlewares.go

diff --git a/main.go b/main.go
index d2f7edf..656ab99 100644
--- a/main.go
+++ b/main.go
@@ -50,15 +50,20 @@ func setupRoutesAndRun(a *models.App) error {
 func setupRoutes(a *models.App) *http.ServeMux {
 	router := http.NewServeMux()
 
+	// middlewares
+	m := controllers.MiddlewaresChain(
+		controllers.LoggingMiddleware,
+	)
+
 	// Обработка статических файлов с кэшированием
-	router.Handle(a.Config.AssetsPath, controllers.StaticHandler())
+	router.Handle(a.Config.AssetsPath, m(controllers.StaticHandler()))
 
 	// Странички
 	{
 		// Обработка главной страницы (русская версия)
-		router.Handle("/ru/", controllers_pages.MainRuPageHandler(a))
+		router.Handle("/ru/", m(controllers_pages.MainRuPageHandler(a)))
 		// Обработка главной страницы
-		router.Handle("/", controllers_pages.MainPageHandler(a))
+		router.Handle("/", m(controllers_pages.MainPageHandler(a)))
 	}
 
 	return router
diff --git a/mvc/controllers/middlewares.go b/mvc/controllers/middlewares.go
new file mode 100644
index 0000000..0078a86
--- /dev/null
+++ b/mvc/controllers/middlewares.go
@@ -0,0 +1,38 @@
+package controllers
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+type Middleware func(http.Handler) http.Handler
+
+/*
+Возвращает один middleware, который объединяет все переданные
+
+MiddlewaresChain(m1, m2, m3)
+= func(next http.Handler) http.Handler { return m1(m2(m3(final))) }
+
+MiddlewaresChain(LoggingMiddleware)
+= func(next http.Handler) http.Handler { return LoggingMiddleware(final http.Handler) }
+*/
+func MiddlewaresChain(middlewares ...Middleware) Middleware {
+	return func(final http.Handler) http.Handler {
+		for i := len(middlewares) - 1; i >= 0; i-- {
+			final = middlewares[i](final)
+		}
+		return final
+	}
+}
+
+func LoggingMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+		log.Printf("Started %s %s", r.Method, r.URL.Path)
+
+		next.ServeHTTP(w, r)
+
+		log.Printf("Completed %s in %v", r.URL.Path, time.Since(start))
+	})
+}