// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;

namespace Microsoft.AspNetCore.Mvc.Filters
{
    internal class MiddlewareFilterBuilderStartupFilter : IStartupFilter
    {
        public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
        {
            return MiddlewareFilterBuilder;

            void MiddlewareFilterBuilder(IApplicationBuilder builder)
            {
                var middlewarePipelineBuilder = builder.ApplicationServices.GetRequiredService<MiddlewareFilterBuilder>();
                middlewarePipelineBuilder.ApplicationBuilder = builder.New();

                next(builder);
            }
        }
    }
}
