// 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.Diagnostics.CodeAnalysis;

namespace Microsoft.CodeAnalysis.Host;

internal static class Extensions
{
    private const string RazorCSharpLspClientName = "RazorCSharp";

    public static bool CanApplyChange([NotNullWhen(returnValue: true)] this TextDocument? document)
        => document?.State.CanApplyChange() ?? false;

    public static bool CanApplyChange([NotNullWhen(returnValue: true)] this TextDocumentState? document)
        => document?.DocumentServiceProvider.GetService<IDocumentOperationService>()?.CanApplyChange ?? false;

    public static bool SupportsDiagnostics([NotNullWhen(returnValue: true)] this TextDocument? document)
        => document?.State.SupportsDiagnostics() ?? false;

    public static bool SupportsDiagnostics([NotNullWhen(returnValue: true)] this TextDocumentState? document)
        => document?.DocumentServiceProvider.GetService<IDocumentOperationService>()?.SupportDiagnostics ?? false;

    public static bool IsRazorDocument(this TextDocument document)
        => IsRazorDocument(document.State);

    public static bool IsRazorDocument(this TextDocumentState documentState)
        => documentState.DocumentServiceProvider.GetService<DocumentPropertiesService>()?.DiagnosticsLspClientName == RazorCSharpLspClientName;
}