// 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.Completion;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Shared.TestHooks;

namespace Microsoft.CodeAnalysis.Interactive
{
    internal sealed class InteractiveCommandCompletionService : CompletionService
    {
        [ExportLanguageServiceFactory(typeof(CompletionService), InteractiveLanguageNames.InteractiveCommand), Shared]
        [method: ImportingConstructor]
        [method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
        internal sealed class Factory(IAsynchronousOperationListenerProvider listenerProvider) : ILanguageServiceFactory
        {
            private readonly IAsynchronousOperationListenerProvider _listenerProvider = listenerProvider;

            public ILanguageService CreateLanguageService(HostLanguageServices languageServices)
                => new InteractiveCommandCompletionService(languageServices.LanguageServices.SolutionServices, _listenerProvider);
        }

        private InteractiveCommandCompletionService(SolutionServices services, IAsynchronousOperationListenerProvider listenerProvider)
            : base(services, listenerProvider)
        {
        }

        public override string Language
            => InteractiveLanguageNames.InteractiveCommand;

        internal override CompletionRules GetRules(CompletionOptions options)
            => CompletionRules.Default;
    }
}
