package main

import (
	"log"
	"net/http"
	"net/http/httputil"
	"net/url"
)

func main() {
	// URL du serveur backend
	target, err := url.Parse("http://localhost:8080")
	if err != nil {
		log.Fatal(err)
	}

	// Créer le reverse proxy
	proxy := httputil.NewSingleHostReverseProxy(target)

	// Customiser les requêtes
	proxy.Director = func(req *http.Request) {
		req.URL.Scheme = target.Scheme
		req.URL.Host = target.Host
		req.Host = target.Host
		req.Header.Set("X-Forwarded-Host", req.Header.Get("Host"))
		req.Header.Set("X-Origin-Host", target.Host)
	}

	// Gérer les erreurs
	proxy.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
		log.Printf("Erreur proxy: %v", err)
		w.WriteHeader(http.StatusBadGateway)
		w.Write([]byte("Service indisponible"))
	}

	// Démarrer le serveur sur le port 3000
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		proxy.ServeHTTP(w, r)
	})

	log.Println("Reverse proxy démarré sur :9000")
	log.Fatal(http.ListenAndServe(":9000", nil))
}