/*
 * Copyright (c) 2025 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 ProtonVPN.Common.Legacy.Helpers;
using System.Threading;

namespace ProtonVPN.Vpn.SynchronizationEvent;

/// <summary>
/// Synchronization event used to force exit of OpenVPN process.
/// Wraps <see cref="EventWaitHandle"/>.
/// </summary>
public class SystemSynchronizationEvent : ISynchronizationEvent
{
    private EventWaitHandle? _eventWaitHandle;

    public SystemSynchronizationEvent(EventWaitHandle eventWaitHandle)
    {
        Ensure.NotNull(eventWaitHandle, nameof(eventWaitHandle));

        _eventWaitHandle = eventWaitHandle;
    }

    public void Set()
    {
        _eventWaitHandle?.Set();
    }

    public void Reset()
    {
        _eventWaitHandle?.Reset();
    }

    public void Dispose()
    {
        _eventWaitHandle?.Dispose();
        _eventWaitHandle = null;
    }
}