package editor

import (
	"os"
	"os/exec"
	"strings"
)

const defaultEditor = "nano"

// Cmd returns a *exec.Cmd editing the given path with $EDITOR or nano if no
// $EDITOR is set.
func Cmd(path string) *exec.Cmd {
	editor, args := getEditor()
	return exec.Command(editor, append(args, path)...)
}

func getEditor() (string, []string) {
	editor := strings.Fields(os.Getenv("EDITOR"))
	if len(editor) > 1 {
		return editor[0], editor[1:]
	}
	if len(editor) == 1 {
		return editor[0], []string{}
	}
	return defaultEditor, []string{}
}