/*
 * Copyright (c) 2023 Proton AG
 *
 * This file is part of ProtonVPN.
 *
 * ProtonVPN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ProtonVPN 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ProtonVPN.  If not, see <https://www.gnu.org/licenses/>.
 */

using System.Threading;

namespace ProtonVPN.Update.Updates
{
    /// <summary>
    /// Performs app updates download directory cleanup only once.
    /// </summary>
    public class CleanableOnceAppUpdates : IAppUpdates
    {
        private readonly IAppUpdates _origin;
        private int _cleaned;

        public CleanableOnceAppUpdates(IAppUpdates origin)
        {
            _origin = origin;
        }

        public void Cleanup()
        {
            if (Interlocked.Exchange(ref _cleaned, 1) != 0)
            {
                return;
            }

            _origin.Cleanup();
        }
    }
}