main.go

package main

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

	"github.com/boichique/avito-test-task/internal/config"
	"github.com/boichique/avito-test-task/internal/server"
	"golang.org/x/exp/slog"
)

const (
	gracefulTimeout = 10 * time.Second
)

func main() {
	cfg, err := config.NewConfig()
	failOnError(err, "parse config")

	srv, err := server.New(context.Background(), cfg)
	failOnError(err, "create server")

	go func() {
		sigCh := make(chan os.Signal, 1)
		signal.Notify(sigCh, syscall.SIGINT)
		<-sigCh
		slog.Info("received interrupt signal. Shutting down...")

		ctx, cancel := context.WithTimeout(context.Background(), gracefulTimeout)
		defer cancel()

		if err := srv.Shutdown(ctx); err != nil {
			slog.Error(
				"shutdown server",
				"error", err,
			)
		}
	}()

	if err := srv.Start(); err != http.ErrServerClosed {
		slog.Error(
			"server stopped",
			"error", err,
		)
		os.Exit(1)
	}
}

func failOnError(err error, message string) {
	if err != nil {
		slog.Error("%s: %s", message, err)
		os.Exit(1)
	}
}