package cmd

import (
	"chronical/service"
	"fmt"
	"os"
	"os/signal"
	"syscall"
	"time"

	"chronical/config"

	"github.com/rs/zerolog/log"
	"github.com/spf13/cobra"
)

var rootCommand = &cobra.Command{
	Use:    "chronical",
	Short:  "Runs the chronical daemon.",
	PreRun: func(cmd *cobra.Command, args []string) {},
	Run: func(cmd *cobra.Command, args []string) {
		startService()
	},
}

var versionCommand = &cobra.Command{
	Use:   "version",
	Short: "Prints the current executable version and exits.",
	Run: func(cmd *cobra.Command, _ []string) {
		fmt.Printf("%s | Version: %s Build: %s | Copyright © %d William Gill\n", config.Project, config.Version, config.Build, time.Now().Year())
	},
}

func Execute() {
	if err := rootCommand.Execute(); err != nil {
		log.Fatal().Err(err).Msgf("failed to execute command.")
	}
}

func init() {
	rootCommand.PersistentFlags().IntVarP(&config.WorkerID, "worker-id", "w", 1, "Specify the Worker ID between 1 and 1023 - Default is 1.")
	rootCommand.PersistentFlags().IntVarP(&config.Epoch, "epoch", "e", 2025, "Specify the Epoch Year - Default is 2025.")
	rootCommand.AddCommand(versionCommand)
}

func startService() {
	service.SnowflakeServer()

	// Set up signal handling for graceful shutdown
	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)

	// Wait for interrupt signal
	<-sigChan
	log.Info().Msg("Received interrupt signal, shutting down gracefully...")
}