package main

import (
	"context"
	"fmt"
	"log"
	"net"
	"os"
	"os/signal"
	"syscall"
	"test3k/authDB/internal/config"
	server "test3k/authDB/internal/transport/grpc"
	api "test3k/authDB/pkg/api"

	"google.golang.org/grpc"
)

func main() {
	config := config.NewConfig()
	ctx, _ := context.WithCancel(context.Background())
	srv := server.NewServer()
	s := grpc.NewServer()

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

	// Запуск сервера
	go start(config, s, srv)

	//
	for {
		select {
		case <-signalChannel:
			return
		case <-ctx.Done():
			return
		}
	}
}

// Остановка сервера
func stop(signalChannel chan os.Signal) {
	log.Println("authDBServer stopping ...")

	signal.Stop(signalChannel)
}

// Запуск сервера
func start(config *config.Config, s *grpc.Server, srv *server.AuthDBServer) {
	api.RegisterAuthDBServer(s, srv)

	//
	connStr := fmt.Sprintf(":%d", config.App.Port)
	lis, era := net.Listen("tcp", connStr)
	if era != nil {
		log.Fatal(era)
	}

	//
	log.Printf("authDBServer starting (%s)\n", connStr)

	//
	eru := s.Serve(lis)
	if eru != nil {
		log.Fatal(eru)
	}
}