/*
 * 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 System.Net;
using ProtonVPN.Common.Core.Networking;

namespace ProtonVPN.OperatingSystems.Network.Contracts;

/// <summary>
/// The empty implementation of <see cref="INetworkInterface"/>.
/// </summary>
public class NullNetworkInterface : INetworkInterface
{
    public string Id => string.Empty;

    public string Name => string.Empty;

    public string Description => string.Empty;

    public bool IsLoopback => false;

    public bool IsActive => false;

    public bool IsIPv4ForwardingEnabled => false;

    public IPAddress DefaultGateway => IPAddress.None;

    public uint Index => 0;

    public List<NetworkAddress> GetUnicastAddresses()
    {
        return [];
    }

    public IPAddress? GetPreferredIpv6UnicastAddress()
    {
        return null;
    }
}