package main

import (
	"crypto/tls"
	"log"
	"log/slog"
	"net/http"

	"github.com/okdaichi/gomoqt/moqt"
	"github.com/okdaichi/gomoqt/quic"
)

func main() {
	// 🔐 Загружаем mkcert сертификат
	cert, err := tls.LoadX509KeyPair("localhost+3.pem", "localhost+3-key.pem")
	if err != nil {
		log.Fatalf("failed to load server cert and key: %v", err)
	}

	tlsConfig := &tls.Config{
		Certificates: []tls.Certificate{cert},
		NextProtos:   []string{"h3"}, // обязательно для HTTP/3
	}

	// 🚀 MoQ сервер
	server := moqt.Server{
		Addr:      ":8080",
		TLSConfig: tlsConfig,
		QUICConfig: &quic.Config{
			Allow0RTT:       true,
			EnableDatagrams: true,
		},
	}

	path := "/relay"

	// 🌐 WebTransport endpoint
	http.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
		slog.Info("Incoming WebTransport request")

		err := server.HandleWebTransport(w, r)
		if err != nil {
			slog.Error("WebTransport error", "error", err)
		}
	})

	// 📡 MoQ setup handler
	moqt.HandleFunc(path, func(w moqt.SetupResponseWriter, r *moqt.SetupRequest) {
		slog.Info("MoQ setup request received")

		sess, err := moqt.Accept(w, r, nil)
		if err != nil {
			slog.Error("Failed to accept session", "error", err)
			return
		}

		slog.Info("MoQ session established", "remote", sess.RemoteAddr())

		// ⚠️ НЕ блокируем поток!
		go handleSession(sess)
	})

	slog.Info("Server starting on https://localhost:8080")

	if err := server.ListenAndServe(); err != nil {
		slog.Error("Server failed", "error", err)
	}
}

func handleSession(sess *moqt.Session) {
	defer sess.Context().Done()

	for {
		// Ждём закрытия соединения
		select {}
	}
}