package server

import (
	"apjournal/config"
	"apjournal/internal/handlers"

	"context"
	"log/slog"
	"os"
	"os/signal"
	"syscall"

	"github.com/jmoiron/sqlx"
)

// Server interface
type Server interface {
	Listen()
}

type server struct {
	config  config.Config
	actions *handlers.Handlers
	ctx     context.Context
	close   context.CancelFunc
}

func (srv *server) stopOnSignal(close context.CancelFunc) {
	// listen for termination signals
	sigc := make(chan os.Signal, 1)
	signal.Notify(sigc, os.Interrupt, syscall.SIGINT)
	signal.Notify(sigc, os.Interrupt, syscall.SIGTERM)
	sig := <-sigc

	log := slog.New(slog.NewJSONHandler(os.Stdout, nil))
	log.Info("Shutting down services",
		"section", "server",
		"app_event", "terminate",
		"signal", sig.String())
	close()
	os.Exit(0)
}

func NewServer(cfg config.Config, log *slog.Logger, conn *sqlx.DB) Server {
	ctx, close := context.WithCancel(context.Background())
	actions := handlers.NewHandlers(cfg, log, conn)
	return &server{
		config:  cfg,
		actions: actions,
		ctx:     ctx,
		close:   close,
	}
}

// Listen for new events that affect the market and process them
func (srv *server) Listen() {
	// start the http server
	go srv.ListenToRequests()
	srv.stopOnSignal(srv.close)
}