// 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;
using System.Composition;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Host.Mef;

namespace Microsoft.CodeAnalysis.Storage;

/// <summary>
/// Obsolete.  Roslyn no longer supports a mechanism to perform arbitrary persistence of data.  If such functionality
/// is needed, consumers are responsible for providing it themselves with whatever semantics are needed.
/// </summary>
[Obsolete("Roslyn no longer exports a mechanism to perform persistence.", error: true)]
internal sealed class LegacyPersistentStorageService : IPersistentStorageService
{
    [ExportWorkspaceServiceFactory(typeof(IPersistentStorageService)), Shared]
    internal sealed class Factory : IWorkspaceServiceFactory
    {
        [ImportingConstructor]
        [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
        public Factory()
        {
        }

        public IWorkspaceService CreateService(HostWorkspaceServices workspaceServices)
            => new LegacyPersistentStorageService();
    }

    public LegacyPersistentStorageService()
    {
    }

    public IPersistentStorage GetStorage(Solution solution)
        => NoOpPersistentStorage.GetOrThrow(SolutionKey.ToSolutionKey(solution), throwOnFailure: false);
}