// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Threading;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.Extensions.Primitives;

namespace ApiExplorerWebSite
{
    public class ActionDescriptorChangeProvider : IActionDescriptorChangeProvider
    {
        private ActionDescriptorChangeProvider()
        {
        }

        public static ActionDescriptorChangeProvider Instance { get; } = new ActionDescriptorChangeProvider();

        public CancellationTokenSource TokenSource { get; private set; }

        public bool HasChanged { get; set; }

        public IChangeToken GetChangeToken()
        {
            TokenSource = new CancellationTokenSource();
            return new CancellationChangeToken(TokenSource.Token);
        }
    }
}