// cheap workaround for https://github.com/go-git/go-git/issues/119
func status(path string) (*git.FileStatus, error) {
	cmd := exec.Command("git", "status", "-s", path)
	output, err := cmd.Output()
	if err != nil {
		return nil, err
	}
	fs := git.FileStatus{
		Staging:  git.Untracked,
		Worktree: git.Untracked,
	}
	// TODO: detect merge conflicts etc.
	if len(output) >= 2 {
		fs.Staging = git.StatusCode(output[0])
		fs.Worktree = git.StatusCode(output[1])
	}
	return &fs, nil
}

var fileStatusMapping = map[git.StatusCode]string{
        git.Unmodified:         "",
        git.Untracked:          "Untracked",
        git.Modified:           "Modified",
        git.Added:              "Added",
        git.Deleted:            "Deleted",
        git.Renamed:            "Renamed",
        git.Copied:             "Copied",
        git.UpdatedButUnmerged: "Updated",
}

func (r *Repo) FileStatus(filename string) (string, string, error) {
        w, err := r.worktree()
        if err != nil {
                return "", "", err
        }
        s, err := w.Status()
        if err != nil {
                return "", "", err
        }
        if s != nil {
                var untracked bool
                if s.IsUntracked(filename) {
                        untracked = true
                }
                fileStatus := s.File(filename)
                if !untracked && fileStatus.Staging == git.Untracked &&
                        fileStatus.Worktree == git.Untracked {
                        fileStatus.Staging = git.Unmodified
                        fileStatus.Worktree = git.Unmodified
                }
                return fileStatusMapping[fileStatus.Staging], fileStatusMapping[fileStatus.Worktree], nil
        }
        return "", "", nil
}