package main

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

	"faro/internal/api"
	"github.com/moby/moby/client"
)

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

	dockerClient, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
	if err != nil {
		logger.Error("create local Docker client", "error", err)
		os.Exit(1)
	}
	defer dockerClient.Close()

	server := &http.Server{
		Addr:              ":8080",
		Handler:           api.NewHandler(dockerClient, logger),
		ReadHeaderTimeout: 5 * time.Second,
	}

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

	go func() {
		logger.Info("Faro API listening", "address", server.Addr)
		if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
			logger.Error("serve API", "error", err)
			os.Exit(1)
		}
	}()

	<-ctx.Done()

	shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	if err := server.Shutdown(shutdownCtx); err != nil {
		logger.Error("shut down API", "error", err)
	}
}