package main

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

	"switchbot-api/internal/app/bootstrap"
	"switchbot-api/internal/app/config"
)

func main() {
	if err := run(); err != nil {
		fmt.Fprintf(os.Stderr, "fatal: %v\n", err)
		os.Exit(1)
	}
}

func run() error {
	cfg := config.Load()
	ctx := context.Background()

	app, err := bootstrap.New(ctx, cfg)
	if err != nil {
		return err
	}

	errCh := make(chan error, 1)
	go func() {
		errCh <- app.Start()
	}()

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

	select {
	case <-sigCtx.Done():
		app.Logger.Info("shutdown signal received")
	case err := <-errCh:
		if err != nil && !errors.Is(err, http.ErrServerClosed) {
			return err
		}
	}

	shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	if err := app.Shutdown(shutdownCtx); err != nil {
		app.Logger.Error("shutdown failed", slog.String("error", err.Error()))
		return err
	}

	app.Logger.Info("server stopped cleanly")
	return nil
}