package cmd

import (
	"fmt"
	"io"
	"os"

	"github.com/spf13/cobra"
	"github.com/warkanum/unitdore/config"
	"github.com/warkanum/unitdore/initsys"
)

var stopAllFlag bool

var stopCmd = &cobra.Command{
	Use:   "stop <name> | --all",
	Short: "Stop a unit by name (or all with --all)",
	Long: `Stop stops the named installed unit.

With --all (same as 'stopall') it stops every installed unit in reverse
startup order, one at a time.`,
	Args: nameOrAll(&stopAllFlag),
	RunE: func(cmd *cobra.Command, args []string) error {
		cfg, ini, err := loadInit()
		if err != nil {
			return err
		}
		if stopAllFlag {
			stopAll(cfg, ini, os.Stdout)
			return nil
		}
		return stopOne(cfg, ini, args[0], os.Stdout)
	},
}

func init() {
	stopCmd.Flags().BoolVar(&stopAllFlag, "all", false, "stop all installed units")
	rootCmd.AddCommand(stopCmd)
}

func stopOne(cfg *config.Config, ini initsys.Init, name string, w io.Writer) error {
	u, err := installedUnit(cfg, ini, name)
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "  ■ stopping %s...\n", ini.ServiceName(*u, cfg.Prefix, cfg.Suffix))
	if err := ini.Stop(*u, cfg.Prefix, cfg.Suffix); err != nil {
		return err
	}
	fmt.Fprintf(w, "  ✓ stopped: %s\n", name)
	return nil
}