package main

import (
	"bytes"
	"log"

	"golang.org/x/crypto/ssh"
)

type SSHConfig struct {
	signer   ssh.Signer
	config   *ssh.ClientConfig
	client   *ssh.Client
	logged   bool
	name     string
	snapshot []Snapshot
}

func (s *SSHConfig) exec(cmd string) (b *bytes.Buffer, err error) {
	if *debugFlag {
		log.Printf("SSHConfig.exec : %s : Start %s", s.name, cmd)
	}

	session, err := s.client.NewSession()
	if err != nil {
		if *debugFlag {
			log.Printf("SSHConfig.exec : %s : client().NewSession(%s) : %s", s.name, cmd, err)
		}
		return
	}

	var buf bytes.Buffer
	b = &buf
	session.Stdout = b

	err = session.Run("TZ=\"" + cfg.Timezone + "\" " + cmd)
	if err != nil {
		if *debugFlag {
			log.Printf("SSHConfig.exec : session(%s).Run(%s) : %s", s.name, cmd, err)
		}
		return
	}

	session.Close()

	return
}