package cmd

import (
	"context"
	"errors"
	"fmt"
	"gis/app"
	"gis/server"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/spf13/cobra"
)

// serveCmd represents the serve command
var serveCmd = &cobra.Command{
	Use:   "serve",
	Short: "Serve HTTP server",
	Run: func(cmd *cobra.Command, args []string) {
		application := app.NewApp(cmd.Context())

		srv := &http.Server{
			Addr:              fmt.Sprintf(":%d", application.Cfg.Port),
			Handler:           server.AppRouter(application),
			ReadHeaderTimeout: 5 * time.Second,
			ReadTimeout:       120 * time.Second,
			WriteTimeout:      120 * time.Second,
			IdleTimeout:       60 * time.Second,
		}

		idleClosed := make(chan struct{})

		go func() {
			sigint := make(chan os.Signal, 1)
			signal.Notify(sigint, os.Interrupt, syscall.SIGTERM)
			<-sigint

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

			if err := srv.Shutdown(ctx); err != nil {
				log.Printf("shutdown server error: %v", err)
			}

			close(idleClosed)
		}()

		if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
			log.Fatalf("listen: %s\n", err)
		}

		<-idleClosed
	},
}

func init() {
	rootCmd.AddCommand(serveCmd)

	// Here you will define your flags and configuration settings.

	// Cobra supports Persistent Flags which will work for this command
	// and all subcommands, e.g.:
	// serveCmd.PersistentFlags().String("foo", "", "A help for foo")

	// Cobra supports local flags which will only run when this command
	// is called directly, e.g.:
	// serveCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
}