// 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.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.Extensions;
 
namespace Microsoft.CodeAnalysis.Simplification;
 
internal static class SimplifierOptionsProviders
{
    public static SimplifierOptions GetSimplifierOptions(this IOptionsReader options, Host.LanguageServices languageServices)
        => languageServices.GetService<ISimplificationService>()?.GetSimplifierOptions(options) ?? SimplifierOptions.CommonDefaults;
 
    public static ValueTask<SimplifierOptions> GetSimplifierOptionsAsync(this Document document, CancellationToken cancellationToken)
        => GetSimplifierOptionsAsync(document, document.GetRequiredLanguageService<ISimplificationService>(), cancellationToken);
 
    public static async ValueTask<SimplifierOptions> GetSimplifierOptionsAsync(this Document document, ISimplification simplification, CancellationToken cancellationToken)
    {
        var configOptions = await document.GetHostAnalyzerConfigOptionsAsync(cancellationToken).ConfigureAwait(false);
        return simplification.GetSimplifierOptions(configOptions);
    }
 
    public static SimplifierOptions GetDefault(Host.LanguageServices languageServices)
        => languageServices.GetRequiredService<ISimplificationService>().DefaultOptions;
}