/*
 * 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.Security;

namespace ProtonVPN.Common.Core.Extensions;

public static class ExceptionMessageExtensions
{
    public static string CombinedMessage(this Exception exception)
    {
        return string.Join(" ---> ", ThisAndInnerExceptions(exception).Select(ex => ex.Message));
    }

    public static bool IsRegistryAccessException(this Exception ex)
    {
        return ex is SecurityException ||
               ex is UnauthorizedAccessException ||
               ex is IOException;
    }

    private static IEnumerable<Exception> ThisAndInnerExceptions(Exception? e)
    {
        for (; e != null; e = e.InnerException)
        {
            yield return e;
        }
    }
}