package cmd

import (
	"context"
	"fmt"
	"log"
	"os"
	"os/signal"
	"syscall"

	"gitea.urkob.com/urko/backblaze-backup/internal/services/backblaze"
	"gitea.urkob.com/urko/backblaze-backup/kit"
	"gitea.urkob.com/urko/backblaze-backup/kit/config"
	"github.com/sirupsen/logrus"
	"github.com/spf13/cobra"
)

var Versions = &cobra.Command{
	Use:   "versions",
	Short: "Handle versions of files in Backblaze",
	Run: func(cmd *cobra.Command, args []string) {
		log.SetFlags(log.Ldate | log.Lmicroseconds)
		ctx, cancel := context.WithCancel(signalContext(cmd.Context()))
		defer cancel()

		envFile := ""
		if os.Getenv("BACKBLAZE_ENV") == "dev" {
			envFile = kit.RootDir() + "/.env"
		}
		cfg := config.NewConfig(envFile)
		logger := logrus.New()
		logger.SetLevel(logrus.Level(cfg.LogLevel))

		bbService, err := backblaze.NewBackBlaze(ctx, logger, cfg.BbId, cfg.BbKey)
		if err != nil {
			panic(fmt.Errorf("NewBackBlaze %w", err))
		}
		if err := bbService.ListDuplicateVersions(ctx, cancel); err != nil {
			panic(fmt.Errorf("bbService.ListDuplicateVersions %w", err))
		}
	},
}

func signalContext(ctx context.Context) context.Context {
	ctx, cancel := context.WithCancel(ctx)

	sigs := make(chan os.Signal, 1)
	signal.Notify(sigs, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		log.Println("listening for shutdown signal")
		<-sigs
		log.Println("shutdown signal received")
		signal.Stop(sigs)
		close(sigs)
		cancel()
	}()

	return ctx
}