// 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.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;

namespace Microsoft.CodeAnalysis.CodeRefactorings.MoveType;

internal abstract partial class AbstractMoveTypeService<TService, TTypeDeclarationSyntax, TNamespaceDeclarationSyntax, TCompilationUnitSyntax>
{
    /// <summary>
    /// Renames the file to match the type contained in it.
    /// </summary>
    private sealed class RenameFileEditor(
        TService service,
        SemanticDocument document,
        TTypeDeclarationSyntax typeDeclaration,
        string fileName,
        CancellationToken cancellationToken) : Editor(service, document, typeDeclaration, fileName, cancellationToken)
    {
        public override async Task<ImmutableArray<CodeActionOperation>> GetOperationsAsync()
        {
            var newSolution = await GetModifiedSolutionAsync().ConfigureAwait(false);
            Contract.ThrowIfNull(newSolution);
            return [new ApplyChangesOperation(newSolution)];
        }

        public override Task<Solution?> GetModifiedSolutionAsync()
            => Task.FromResult<Solution?>(
                SemanticDocument.Project.Solution.WithDocumentName(SemanticDocument.Document.Id, FileName));
    }
}