package main

import (
	"fmt"
	"git.sch9.ru/new_gate/ms-tester/config"
	contestsDelivery "git.sch9.ru/new_gate/ms-tester/internal/contests/delivery/grpc"
	contestsRepository "git.sch9.ru/new_gate/ms-tester/internal/contests/repository"
	contestsUseCase "git.sch9.ru/new_gate/ms-tester/internal/contests/usecase"
	problemsDelivery "git.sch9.ru/new_gate/ms-tester/internal/problems/delivery/grpc"
	problemsSub "git.sch9.ru/new_gate/ms-tester/internal/problems/delivery/rabbitmq"
	problemsRepository "git.sch9.ru/new_gate/ms-tester/internal/problems/repository"
	problemsUseCase "git.sch9.ru/new_gate/ms-tester/internal/problems/usecase"
	testerDelivery "git.sch9.ru/new_gate/ms-tester/internal/tester/delivery/grpc"
	testerPubSub "git.sch9.ru/new_gate/ms-tester/internal/tester/delivery/rabbitmq"
	testerUseCase "git.sch9.ru/new_gate/ms-tester/internal/tester/usecase"
	"git.sch9.ru/new_gate/ms-tester/pkg/external/pandoc"
	"git.sch9.ru/new_gate/ms-tester/pkg/external/postgres"
	"git.sch9.ru/new_gate/ms-tester/pkg/external/rabbitmq"
	"github.com/ilyakaznacheev/cleanenv"
	"go.uber.org/zap"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
	"net"
	"net/http"
	"os"
	"os/signal"
	"syscall"
)

func main() {
	var cfg config.Config
	err := cleanenv.ReadConfig(".env", &cfg)
	if err != nil {
		panic(fmt.Sprintf("error reading config: %s", err.Error()))
	}

	var logger *zap.Logger
	if cfg.Env == "prod" {
		logger = zap.Must(zap.NewProduction())
	} else if cfg.Env == "dev" {
		logger = zap.Must(zap.NewDevelopment())
	} else {
		panic(fmt.Sprintf(`error reading config: env expected "prod" or "dev", got "%s"`, cfg.Env))
	}

	db, err := postgres.NewPostgresDB(cfg.PostgresDSN)
	if err != nil {
		panic(err)
	}
	defer db.Close()

	pandocClient := pandoc.NewPandocClient(&http.Client{}, cfg.Pandoc)

	problemRepo := problemsRepository.NewProblemRepository(db, logger)
	problemUC := problemsUseCase.NewProblemUseCase(problemRepo, pandocClient)

	contestRepo := contestsRepository.NewContestRepository(db, logger)
	contestUC := contestsUseCase.NewContestUseCase(contestRepo)

	testerUC := testerUseCase.NewTesterUseCase()

	conn, err := rabbitmq.NewRabbitClient(cfg.RabbitDSN)
	if err != nil {
		panic(err)
	}
	defer conn.Close()
	ch, err := conn.Channel()
	if err != nil {
		panic(err)
	}
	defer ch.Close()
	err = ch.Qos(
		1,
		0,
		true,
	)
	if err != nil {
		panic(err)
	}

	problemsSub.NewNotificationSubscriber(ch, cfg.NQueueName, cfg.InstanceName, problemUC)

	testerPubSub.NewTesterProducer(ch, cfg.TQueueName, cfg.RQueueName, testerUC)
	testerPubSub.NewTesterConsumer(ch, cfg.RQueueName, cfg.InstanceName, testerUC)

	gserver := grpc.NewServer()
	defer gserver.GracefulStop()

	problemsDelivery.NewProblemHandlers(gserver, problemUC)
	contestsDelivery.NewContestHandlers(gserver, contestUC)
	testerDelivery.NewTesterHandlers(gserver, testerUC)
	reflection.Register(gserver)

	ln, err := net.Listen("tcp", cfg.Address)
	if err != nil {
		panic(err)
	}

	go func() {
		if err = gserver.Serve(ln); err != nil {
			panic(err)
		}
	}()
	fmt.Println("server started")
	stop := make(chan os.Signal, 1)
	signal.Notify(stop, syscall.SIGTERM, syscall.SIGINT)

	<-stop
}