main.go

package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"eino-closedloop-cn/internal/app"
)

func main() {
	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}

	mux := http.NewServeMux()
	app.RegisterRoutes(mux)

	srv := &http.Server{
		Addr:              ":" + port,
		Handler:           mux,
		ReadHeaderTimeout: 5 * time.Second,
	}

	errCh := make(chan error, 1)
	go func() {
		log.Printf("HTTP 服务已启动：http://localhost:%s", port)
		errCh <- srv.ListenAndServe()
	}()

	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)

	select {
	case <-stop:
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()
		_ = srv.Shutdown(ctx)
	case err := <-errCh:
		if err != nil && err != http.ErrServerClosed {
			log.Fatalf("服务启动失败：%v", err)
		}
	}
}