SwaggerMiddlewareBase.cs

//-----------------------------------------------------------------------
// <copyright file="SwaggerMiddleware.cs" company="NSwag">
//     Copyright (c) Rico Suter. All rights reserved.
// </copyright>
// <license>https://github.com/NSwag/NSwag/blob/master/LICENSE.md</license>
// <author>Rico Suter, mail@rsuter.com</author>
//-----------------------------------------------------------------------

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using NSwag.CodeGeneration.SwaggerGenerators;
using NSwag.CodeGeneration.SwaggerGenerators.WebApi;

namespace NSwag.AspNetCore
{
    public abstract class SwaggerMiddlewareBase
    {
        private readonly RequestDelegate _nextDelegate;

        protected SwaggerMiddleware(RequestDelegate nextDelegate)
        {
            _nextDelegate = nextDelegate;
        }

        public async Task Invoke(HttpContext context)
        {
            if (context.Request.Path.HasValue && string.Equals(context.Request.Path.Value.Trim('/'), _path.Trim('/'), StringComparison.OrdinalIgnoreCase))
            {
                context.Response.StatusCode = 200;
                await context.Response.WriteAsync(GenerateSwagger(context));
            }
            else
			{
                await _nextDelegate(context);
			}				
        }

        protected abstract GenerateSwagger(HttpContext context);
    }
}