// 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.ComponentModel.Composition;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Options;
using Microsoft.VisualStudio.Language.Intellisense.AsyncCompletion;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Utilities;
 
namespace Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.AsyncCompletion;
 
[Export(typeof(IAsyncCompletionItemManagerProvider))]
[Name("Roslyn Completion Service Provider")]
[ContentType(ContentTypeNames.RoslynContentType)]
[method: ImportingConstructor]
[method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
internal class ItemManagerProvider(RecentItemsManager recentItemsManager, EditorOptionsService editorOptionsService) : IAsyncCompletionItemManagerProvider
{
    private readonly ItemManager _instance = new ItemManager(recentItemsManager, editorOptionsService);
 
    public IAsyncCompletionItemManager? GetOrCreate(ITextView textView)
    {
        if (textView.IsInLspEditorContext())
        {
            // If we're in an LSP editing context, we want to avoid returning a completion item manager.
            // Otherwise, we'll interfere with the LSP client manager and disrupt filtering.
            return null;
        }
 
        return _instance;
    }
}