namespace Ocelot.UnitTests.Claims
{
    using System.Collections.Generic;
    using Microsoft.AspNetCore.Builder;
    using Microsoft.AspNetCore.Http;
    using Microsoft.Extensions.DependencyInjection;
    using Moq;
    using Ocelot.Claims;
    using Ocelot.Claims.Middleware;
    using Ocelot.Configuration;
    using Ocelot.Configuration.Builder;
    using Ocelot.DownstreamRouteFinder;
    using Ocelot.DownstreamRouteFinder.UrlMatcher;
    using Ocelot.Logging;
    using Ocelot.Responses;
    using TestStack.BDDfy;
    using Xunit;

    public class ClaimsBuilderMiddlewareTests : ServerHostedMiddlewareTest
    {
        private readonly Mock<IAddClaimsToRequest> _addHeaders;
        private Response<DownstreamRoute> _downstreamRoute;

        public ClaimsBuilderMiddlewareTests()
        {
            _addHeaders = new Mock<IAddClaimsToRequest>();

            GivenTheTestServerIsConfigured();
        }

        [Fact]
        public void should_call_claims_to_request_correctly()
        {
            var downstreamRoute = new DownstreamRoute(new List<PlaceholderNameAndValue>(),
                new ReRouteBuilder()
                    .WithDownstreamPathTemplate("any old string")
                    .WithClaimsToClaims(new List<ClaimToThing>
                    {
                        new ClaimToThing("sub", "UserType", "|", 0)
                    })
                    .WithUpstreamHttpMethod(new List<string> { "Get" })
                    .Build());

            this.Given(x => x.GivenTheDownStreamRouteIs(downstreamRoute))
                .And(x => x.GivenTheAddClaimsToRequestReturns())
                .When(x => x.WhenICallTheMiddleware())
                .Then(x => x.ThenTheClaimsToRequestIsCalledCorrectly())
                .BDDfy();
        }

        protected override void GivenTheTestServerServicesAreConfigured(IServiceCollection services)
        {
            services.AddSingleton<IOcelotLoggerFactory, AspDotNetLoggerFactory>();
            services.AddLogging();
            services.AddSingleton(_addHeaders.Object);
            services.AddSingleton(ScopedRepository.Object);
        }

        protected override void GivenTheTestServerPipelineIsConfigured(IApplicationBuilder app)
        {
            app.UseClaimsBuilderMiddleware();
        }

        private void GivenTheDownStreamRouteIs(DownstreamRoute downstreamRoute)
        {
            _downstreamRoute = new OkResponse<DownstreamRoute>(downstreamRoute);
            ScopedRepository
                .Setup(x => x.Get<DownstreamRoute>(It.IsAny<string>()))
                .Returns(_downstreamRoute);
        }

        private void GivenTheAddClaimsToRequestReturns()
        {
            _addHeaders
                .Setup(x => x.SetClaimsOnContext(It.IsAny<List<ClaimToThing>>(),
                It.IsAny<HttpContext>()))
                .Returns(new OkResponse());
        }

        private void ThenTheClaimsToRequestIsCalledCorrectly()
        {
            _addHeaders
                .Verify(x => x.SetClaimsOnContext(It.IsAny<List<ClaimToThing>>(),
                It.IsAny<HttpContext>()), Times.Once);
        }
    }
}