// 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 Microsoft.CodeAnalysis.Host;
 
namespace Microsoft.VisualStudio.LanguageServices.ExternalAccess.VSTypeScript.Api;
 
internal sealed partial class VSTypeScriptVisualStudioProjectWrapper
{
    private sealed class LspContainedDocumentServiceProvider : IDocumentServiceProvider, IDocumentOperationService
    {
        private readonly VirtualDocumentPropertiesService _documentPropertiesService;
 
        private LspContainedDocumentServiceProvider()
        {
            _documentPropertiesService = VirtualDocumentPropertiesService.Instance;
        }
 
        public static LspContainedDocumentServiceProvider Instance = new LspContainedDocumentServiceProvider();
 
        bool IDocumentOperationService.CanApplyChange => true;
 
        bool IDocumentOperationService.SupportDiagnostics => true;
 
        TService? IDocumentServiceProvider.GetService<TService>() where TService : class
        {
            if (typeof(TService) == typeof(DocumentPropertiesService))
            {
                return (TService)(object)_documentPropertiesService;
            }
 
            return this as TService;
        }
 
        private sealed class VirtualDocumentPropertiesService : DocumentPropertiesService
        {
            private const string _lspClientName = "TypeScript";
 
            private VirtualDocumentPropertiesService() { }
 
            public static VirtualDocumentPropertiesService Instance = new VirtualDocumentPropertiesService();
 
            public override string? DiagnosticsLspClientName => _lspClientName;
        }
    }
}