// 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.Composition;
using System.Diagnostics.CodeAnalysis;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Shared.Extensions;

namespace Microsoft.CodeAnalysis.CodeRefactorings.MoveType
{
    [ExportCodeRefactoringProvider(LanguageNames.CSharp, LanguageNames.VisualBasic,
        Name = PredefinedCodeRefactoringProviderNames.MoveTypeToFile), Shared]
    internal class MoveTypeCodeRefactoringProvider : CodeRefactoringProvider
    {
        [ImportingConstructor]
        [SuppressMessage("RoslynDiagnosticsReliability", "RS0033:Importing constructor should be [Obsolete]", Justification = "Used in test code: https://github.com/dotnet/roslyn/issues/42814")]
        public MoveTypeCodeRefactoringProvider()
        {
        }

        public override async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
        {
            var (document, textSpan, cancellationToken) = context;
            var workspace = document.Project.Solution.Workspace;
            if (workspace.Kind == WorkspaceKind.MiscellaneousFiles)
            {
                return;
            }

            if (document.IsGeneratedCode(cancellationToken))
            {
                return;
            }

            var service = document.GetLanguageService<IMoveTypeService>();
            var actions = await service.GetRefactoringAsync(document, textSpan, cancellationToken).ConfigureAwait(false);
            context.RegisterRefactorings(actions);
        }
    }
}
