package main

import (
	"context"
	"errors"
	"fmt"
	"log/slog"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"monitoring-pf/internal/pf"
)

func main() {
	cfg := pf.LoadConfig()
	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
	slog.SetDefault(logger)

	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
	defer stop()

	app, err := pf.OpenApp(ctx, cfg)
	if err != nil {
		slog.Error("db_open_failed", "error", err)
		os.Exit(1)
	}
	defer app.Close()

	server := &http.Server{
		Addr:              fmt.Sprintf("%s:%d", cfg.WebHost, cfg.WebPort),
		Handler:           pf.Server{App: app},
		ReadHeaderTimeout: 10 * time.Second,
	}

	go func() {
		<-ctx.Done()
		shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
		defer cancel()
		_ = server.Shutdown(shutdownCtx)
	}()

	slog.Info("monitoring_pf_go_server_started", "addr", server.Addr)
	if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
		slog.Error("server_failed", "error", err)
		os.Exit(1)
	}
}