package service

import (
	"context"
	"fmt"
	"net"
	"net/http"
	"time"

	"mstore/app/handler"
	"mstore/app/logger"
	"mstore/app/router"
)

const protocol = "tcp"

type ServiceParams struct {
	Handler *handler.Handler
}

type Service struct {
	hand *handler.Handler
	rout *router.Router
	logg *logger.Logger

	address string
	portnum int64
	listen  net.Listener
	hsrv    *http.Server
}

func NewService(params *ServiceParams) (*Service, error) {
	var err error
	svc := &Service{
		hand: params.Handler,
	}
	svc.logg = logger.NewLogger("service")
	return svc, err
}

func (svc *Service) Build() error {
	var err error
	svc.logg.Infof("Service build ")

	svc.rout = router.NewRouter()
	svc.rout.Get(PathServiceHello, svc.hand.SendHello)
	svc.rout.Get(PathFileExists, svc.hand.FileExists)

	listenAddress := fmt.Sprintf("%s:%d", svc.address, svc.portnum)
	svc.listen, err = net.Listen(protocol, listenAddress)
	svc.hsrv = &http.Server{
		Handler: svc.rout,
	}
	return err
}

func (svc *Service) Run() error {
	var err error
	svc.logg.Infof("Service run")
	err = svc.hsrv.Serve(svc.listen)
	if err != nil {
		return err
	}
	return err
}

func (svc *Service) Stop() {
	svc.logg.Infof("Service stop")
	if svc.hsrv != nil {
		downWaiting := 5 * time.Second
		ctx, _ := context.WithTimeout(context.Background(), downWaiting)
		svc.hsrv.Shutdown(ctx)
	}
}