#if NETFRAMEWORK
using System;
#endif

using Microsoft.Extensions.DependencyInjection;

namespace DigitalData.Core.Infrastructure
#if NET
    ;
#elif NETFRAMEWORK
    {
#endif

public class Static
{
    private readonly static Lazy<IServiceCollection> LazyServices = new Lazy<IServiceCollection>(() => new ServiceCollection());

    public static IServiceCollection Services => LazyProvider.IsValueCreated
        ? LazyServices.Value 
        : throw new InvalidOperationException("Service collection is not available after the service provider has been built.");

    private static readonly Lazy<IServiceProvider> LazyProvider = new Lazy<IServiceProvider>(Services.BuildServiceProvider);

    public static IServiceProvider Provider => LazyProvider.Value;
}

#if NETFRAMEWORK
    }
#endif