// 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.Tasks;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Language.Intellisense.AsyncCompletion;
using Microsoft.VisualStudio.Language.Intellisense.AsyncCompletion.Data;
using Microsoft.VisualStudio.Text;
using RoslynCompletionList = Microsoft.CodeAnalysis.Completion.CompletionList;
 
namespace Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.AsyncCompletion
{
    /// <summary>
    /// Contains data need to be tracked over an entire IAsyncCompletionSession completion
    /// session for various operations.
    /// </summary>
    internal sealed class CompletionSessionData
    {
        private const string RoslynCompletionSessionData = nameof(RoslynCompletionSessionData);
        public bool TargetTypeFilterSelected { get; set; }
        public bool HasSuggestionItemOptions { get; set; }
 
        public SnapshotPoint? ExpandedItemTriggerLocation { get; set; }
        public TextSpan? CompletionListSpan { get; set; }
        public CompletionList<CompletionItem>? CombinedSortedList { get; set; }
        public Task<(CompletionContext, RoslynCompletionList)>? ExpandedItemsTask { get; set; }
        public bool IsExclusive { get; set; }
 
        private CompletionSessionData()
        {
        }
 
        public static CompletionSessionData GetOrCreateSessionData(IAsyncCompletionSession session)
            => session.Properties.GetOrCreateSingletonProperty(RoslynCompletionSessionData, static () => new CompletionSessionData());
    }
}