package fs

import (
	"errors"
	"os"
)

// IsDir Tells whether the filename is a directory
func IsDir(filename string) (bool, error) {
	fd, err := os.Stat(filename)
	if err != nil {
		return false, err
	}
	fm := fd.Mode()
	return fm.IsDir(), nil
}

// DirectoryOrCreate checking directory, is not exists will create
func DirectoryOrCreate(dirname string) error {
	if fi, err := os.Stat(dirname); err != nil {
		if errors.Is(err, os.ErrNotExist) {
			return os.MkdirAll(dirname, 0755)
		} else {
			return err
		}
	} else {
		if fi.IsDir() {
			return nil
		}
		return errors.New("file not directory")
	}
}