// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Diagnostics.CodeAnalysis;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Threading;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.Shared.TestHooks;

internal static partial class TaskExtensions
{
    [SuppressMessage("Style", "VSTHRD200:Use \"Async\" suffix for async methods", Justification = "This is a Task wrapper, not an asynchronous method.")]
    public static Task CompletesAsyncOperation(this Task task, IAsyncToken asyncToken)
    {
        if (asyncToken is AsynchronousOperationListener.DiagnosticAsyncToken diagnosticToken)
        {
            diagnosticToken.AssociateWithTask(task);
        }

        return task.CompletesTrackingOperation(asyncToken);
    }

    [PerformanceSensitive(
        "https://developercommunity.visualstudio.com/content/problem/854696/changing-target-framework-takes-10-minutes-with-10.html",
        AllowCaptures = false)]
    [SuppressMessage("Style", "VSTHRD200:Use \"Async\" suffix for async methods", Justification = "This is a Task wrapper, not an asynchronous method.")]
    public static Task CompletesTrackingOperation(this Task task, IDisposable token)
    {
        if (token is IAsyncToken { IsNull: true })
        {
            return task;
        }

        return CompletesTrackingOperationSlow(task, token);

        static async Task CompletesTrackingOperationSlow(Task task, IDisposable token)
        {
            using (token)
            {
                await task.NoThrowAwaitableInternal(captureContext: false);
            }
        }
    }
}