// 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.Collections.Generic;
using System.Collections.Immutable;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.ExternalAccess.OmniSharp.Navigation;
using Microsoft.CodeAnalysis.NavigateTo;
using Microsoft.CodeAnalysis.Shared.TestHooks;
 
namespace Microsoft.CodeAnalysis.ExternalAccess.OmniSharp.NavigateTo;
 
internal static class OmniSharpNavigateToSearcher
{
    public delegate Task OmniSharpNavigateToCallback(Project project, in OmniSharpNavigateToSearchResult result, CancellationToken cancellationToken);
 
    public static Task SearchAsync(
        Solution solution,
        OmniSharpNavigateToCallback callback,
        string searchPattern,
        IImmutableSet<string> kinds,
        CancellationToken cancellationToken)
    {
        var searcher = NavigateToSearcher.Create(
            solution,
            AsynchronousOperationListenerProvider.NullListener,
            new OmniSharpNavigateToCallbackImpl(callback),
            searchPattern,
            kinds,
            disposalToken: CancellationToken.None);
 
        return searcher.SearchAsync(searchCurrentDocument: false, cancellationToken);
    }
 
    private sealed class OmniSharpNavigateToCallbackImpl : INavigateToSearchCallback
    {
        private readonly OmniSharpNavigateToCallback _callback;
 
        public OmniSharpNavigateToCallbackImpl(OmniSharpNavigateToCallback callback)
        {
            _callback = callback;
        }
 
        public Task AddItemAsync(Project project, INavigateToSearchResult result, CancellationToken cancellationToken)
        {
            var omniSharpResult = new OmniSharpNavigateToSearchResult(
                result.AdditionalInformation,
                result.Kind,
                (OmniSharpNavigateToMatchKind)result.MatchKind,
                result.IsCaseSensitive,
                result.Name,
                result.NameMatchSpans,
                result.SecondarySort,
                result.Summary!,
                new(result.NavigableItem.DisplayTaggedParts, result.NavigableItem.Document, result.NavigableItem.SourceSpan));
 
            return _callback(project, omniSharpResult, cancellationToken);
        }
 
        public void Done(bool isFullyLoaded)
        {
        }
 
        public void ReportProgress(int current, int maximum)
        {
        }
 
        public void ReportIncomplete()
        {
        }
    }
}