﻿// 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;
using Microsoft.CodeAnalysis.Options;

namespace Microsoft.CodeAnalysis.Host;

[ExportWorkspaceService(typeof(IWorkspaceConfigurationService), ServiceLayer.Host), Shared]
internal sealed class WorkspaceConfigurationService : IWorkspaceConfigurationService
{
    private readonly IGlobalOptionService _globalOptions;
    private WorkspaceConfigurationOptions? _lazyOptions;

    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public WorkspaceConfigurationService(IGlobalOptionService globalOptions)
    {
        _globalOptions = globalOptions;
    }

    public WorkspaceConfigurationOptions Options
        => _lazyOptions ??= _globalOptions.GetWorkspaceConfigurationOptions();

    internal void Clear()
        => _lazyOptions = null;
}
