// 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.Composition;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.QualifyMemberAccess;
using Microsoft.CodeAnalysis.Shared.Extensions;

namespace Microsoft.CodeAnalysis.CSharp.QualifyMemberAccess;

[ExportCodeFixProvider(LanguageNames.CSharp, Name = PredefinedCodeFixProviderNames.QualifyMemberAccess), Shared]
[ExtensionOrder(After = PredefinedCodeFixProviderNames.RemoveUnnecessaryCast)]
[method: ImportingConstructor]
[method: SuppressMessage("RoslynDiagnosticsReliability", "RS0033:Importing constructor should be [Obsolete]", Justification = "Used in test code: https://github.com/dotnet/roslyn/issues/42814")]
internal sealed class CSharpQualifyMemberAccessCodeFixProvider() : AbstractQualifyMemberAccessCodeFixprovider<SimpleNameSyntax, InvocationExpressionSyntax>
{
    protected override SimpleNameSyntax? GetNode(Diagnostic diagnostic, CancellationToken cancellationToken)
    {
        var node = diagnostic.Location.FindNode(getInnermostNodeForTie: true, cancellationToken);
        switch (node)
        {
            case SimpleNameSyntax simpleNameSyntax:
                return simpleNameSyntax;
            case InvocationExpressionSyntax invocationExpressionSyntax:
                return invocationExpressionSyntax.Expression as SimpleNameSyntax;
            default:
                return null;
        }
    }

    protected override string GetTitle() => CSharpCodeFixesResources.Add_this;
}