// 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.
 
#nullable disable
 
using System;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Editor;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.VisualStudio.Shell;
using Roslyn.Utilities;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.Utilities;
 
[ExportWorkspaceService(typeof(INavigateToLinkService), layer: ServiceLayer.Host)]
[Shared]
internal sealed class VisualStudioNavigateToLinkService : INavigateToLinkService
{
    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public VisualStudioNavigateToLinkService()
    {
    }
 
    public Task<bool> TryNavigateToLinkAsync(Uri uri, CancellationToken cancellationToken)
    {
        if (!uri.IsAbsoluteUri)
        {
            return SpecializedTasks.False;
        }
 
        if (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps)
        {
            return SpecializedTasks.False;
        }
 
        StartBrowser(uri);
        return SpecializedTasks.True;
    }
 
    public static void StartBrowser(string uri)
        => VsShellUtilities.OpenSystemBrowser(uri);
 
    public static void StartBrowser(Uri uri)
        => VsShellUtilities.OpenSystemBrowser(uri.AbsoluteUri);
}