// NewApplication is the constructor for Application struct.
func NewApplication() (*Application, error) {
	u, err := libunix.CurrentUser()
	if err != nil {
		return nil, err
	}

	dsn := libenv.EnvWithDefault("DATABASE_URL", fmt.Sprintf("postgres://%v@localhost:5432/go-bootstrap?sslmode=disable", u))

	db, err := sqlx.Connect("postgres", dsn)
	if err != nil {
		return nil, err
	}

	cookieStoreSecret := libenv.EnvWithDefault("COOKIE_SECRET", "kvLePSAQkjetRLh3")

	app := &Application{}
	app.dsn = dsn
	app.db = db
	app.cookieStore = sessions.NewCookieStore([]byte(cookieStoreSecret))

	return app, err
}
func main() {
	app, err := NewApplication()
	if err != nil {
		logrus.Fatal(err.Error())
	}

	middle, err := app.middlewareStruct()
	if err != nil {
		logrus.Fatal(err.Error())
	}

	serverAddress := libenv.EnvWithDefault("HTTP_ADDR", ":8888")
	certFile := libenv.EnvWithDefault("HTTP_CERT_FILE", "")
	keyFile := libenv.EnvWithDefault("HTTP_KEY_FILE", "")
	drainIntervalString := libenv.EnvWithDefault("HTTP_DRAIN_INTERVAL", "1s")

	drainInterval, err := time.ParseDuration(drainIntervalString)
	if err != nil {
		logrus.Fatal(err.Error())
	}

	srv := &graceful.Server{
		Timeout: drainInterval,
		Server:  &http.Server{Addr: serverAddress, Handler: middle},
	}

	logrus.Infoln("Running HTTP server on " + serverAddress)
	if certFile != "" && keyFile != "" {
		err = srv.ListenAndServeTLS(certFile, keyFile)
	} else {
		err = srv.ListenAndServe()
	}
	if err != nil {
		logrus.Fatal(err.Error())
	}
}