/*
 * 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.Configurations.Contracts;
using ProtonVPN.Logging.Contracts;
using ProtonVPN.Logging.Contracts.Events.ConnectionLogs;
using ProtonVPN.Vpn.SynchronizationEvent;

namespace ProtonVPN.Vpn.OpenVpn;

/// <summary>
/// Signals OpenVPN process to exit using synchronization event.
/// </summary>
internal class OpenVpnExitEvent : IOpenVpnExitEvent
{
    private readonly ILogger _logger;
    private readonly ISynchronizationEvents _synchronizationEvents;
    private readonly string _exitEventName;

    public OpenVpnExitEvent(ILogger logger, ISynchronizationEvents synchronizationEvents, IStaticConfiguration config)
    {
        _logger = logger;
        _synchronizationEvents = synchronizationEvents;
        _exitEventName = config.OpenVpn.ExitEventName;
    }

    public void Signal()
    {
        _logger.Info<ConnectionLog>($"OpenVPN <- Signaling {_exitEventName}");
        using (ISynchronizationEvent exitEvent = _synchronizationEvents.SynchronizationEvent(_exitEventName))
        {
            exitEvent.Set();
            exitEvent.Reset();
        }
    }
}