// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2022 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package filepicker

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

var zenity string

func init() {
	zenity, _ = exec.LookPath("zenity")
}

func IsSupported() bool {
	return len(zenity) > 0
}

func Open() (string, error) {
	cmd := exec.Command(zenity, "--file-selection")
	var output bytes.Buffer
	cmd.Stdout = &output
	err := cmd.Run()
	if err != nil {
		var exitErr *exec.ExitError
		if errors.As(err, &exitErr) && exitErr.ExitCode() == 1 {
			return "", nil
		}
		return "", err
	}
	return strings.TrimSpace(output.String()), nil
}