package cli

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

var (
	cfgFile string
	verbose bool
)

var rootCmd = &cobra.Command{
	Use:   "at-rund",
	Short: "AT Protocol serverless runtime daemon",
	Long: `at-rund is the infrastructure daemon for hosting AT Protocol serverless bundles.

It manages Firecracker microVMs, builds runtime images via Nix, and executes
bundles in isolated environments with virtio-fs mounting.`,
}

func Execute() error {
	return rootCmd.Execute()
}

func init() {
	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default: ~/.at-rund/config.toml)")
	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose output")

	rootCmd.AddCommand(initCmd)
	rootCmd.AddCommand(buildCmd)
	rootCmd.AddCommand(serveCmd)
	rootCmd.AddCommand(runtimeCmd)
	rootCmd.AddCommand(poolCmd)
}

func configDir() string {
	home, err := os.UserHomeDir()
	if err != nil {
		fmt.Fprintf(os.Stderr, "error: cannot find home directory: %v\n", err)
		os.Exit(1)
	}
	return home + "/.at-rund"
}