namespace Ocelot.AcceptanceTests
{
    using Microsoft.AspNetCore.Http;
    using Ocelot.Configuration.File;
    using System;
    using System.Collections.Generic;
    using System.Net;
    using TestStack.BDDfy;
    using Xunit;

    public class CaseSensitiveRoutingTests : IDisposable
    {
        private readonly Steps _steps;
        private readonly ServiceHandler _serviceHandler;

        public CaseSensitiveRoutingTests()
        {
            _serviceHandler = new ServiceHandler();
            _steps = new Steps();
        }

        [Fact]
        public void should_return_response_200_when_global_ignore_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/products/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
                .BDDfy();
        }

        [Fact]
        public void should_return_response_200_when_reroute_ignore_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/products/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            ReRouteIsCaseSensitive = false,
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
                .BDDfy();
        }

        [Fact]
        public void should_return_response_404_when_reroute_respect_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/products/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            ReRouteIsCaseSensitive = true,
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.NotFound))
                .BDDfy();
        }

        [Fact]
        public void should_return_response_200_when_reroute_respect_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/PRODUCTS/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            ReRouteIsCaseSensitive = true,
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
                .BDDfy();
        }

        [Fact]
        public void should_return_response_404_when_global_respect_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/products/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            ReRouteIsCaseSensitive = true,
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.NotFound))
                .BDDfy();
        }

        [Fact]
        public void should_return_response_200_when_global_respect_case_sensitivity_set()
        {
            var configuration = new FileConfiguration
            {
                ReRoutes = new List<FileReRoute>
                    {
                        new FileReRoute
                        {
                            DownstreamPathTemplate = "/api/products/{productId}",
                            DownstreamHostAndPorts = new List<FileHostAndPort>
                            {
                                new FileHostAndPort
                                {
                                    Host = "localhost",
                                    Port = 51877,
                                }
                            },
                            DownstreamScheme = "http",
                            UpstreamPathTemplate = "/PRODUCTS/{productId}",
                            UpstreamHttpMethod = new List<string> { "Get" },
                            ReRouteIsCaseSensitive = true,
                        }
                    }
            };

            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51877", "/api/products/1", 200, "Some Product"))
                .And(x => _steps.GivenThereIsAConfiguration(configuration))
                .And(x => _steps.GivenOcelotIsRunning())
                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/PRODUCTS/1"))
                .Then(x => _steps.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
                .BDDfy();
        }

        private void GivenThereIsAServiceRunningOn(string baseUrl, string basePath, int statusCode, string responseBody)
        {
            _serviceHandler.GivenThereIsAServiceRunningOn(baseUrl, basePath, async context =>
            {
                context.Response.StatusCode = statusCode;
                await context.Response.WriteAsync(responseBody);
            });
        }

        public void Dispose()
        {
            _serviceHandler?.Dispose();
            _steps.Dispose();
        }
    }
}