// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using RoutingWebSite;
using Xunit;

namespace Microsoft.AspNetCore.Mvc.FunctionalTests
{
    public class RoutingDynamicTest : IClassFixture<MvcTestFixture<RoutingWebSite.StartupForDynamic>>
    {
        public RoutingDynamicTest(MvcTestFixture<RoutingWebSite.StartupForDynamic> fixture)
        {
            Factory = fixture.Factories.FirstOrDefault() ?? fixture.WithWebHostBuilder(ConfigureWebHostBuilder);
            Client = Factory.CreateDefaultClient();
        }

        private static void ConfigureWebHostBuilder(IWebHostBuilder builder) => builder.UseStartup<RoutingWebSite.StartupForDynamic>();

        public WebApplicationFactory<StartupForDynamic> Factory { get; }
        public HttpClient Client { get; }

        [Fact]
        public async Task DynamicController_CanGet404ForMissingAction()
        {
            // Arrange
            var url = "http://localhost/dynamic/controller%3DFake,action%3DIndex";
            var request = new HttpRequestMessage(HttpMethod.Get, url);

            // Act
            var response = await Client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();

            // Assert
            Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
        }

        [Fact]
        public async Task DynamicPage_CanGet404ForMissingAction()
        {
            // Arrange
            var url = "http://localhost/dynamicpage/page%3D%2FFake";
            var request = new HttpRequestMessage(HttpMethod.Get, url);

            // Act
            var response = await Client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();

            // Assert
            Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
        }

        [Fact]
        public async Task DynamicController_CanSelectControllerInArea()
        {
            // Arrange
            var url = "http://localhost/dynamic/area%3Dadmin,controller%3Ddynamic,action%3Dindex";
            var request = new HttpRequestMessage(HttpMethod.Get, url);

            // Act
            var response = await Client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();

            // Assert
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Equal("Hello from dynamic controller: /link_generation/dynamic/index", content);
        }

        [Fact]
        public async Task DynamicController_CanSelectControllerInArea_WithActionConstraints()
        {
            // Arrange
            var url = "http://localhost/dynamic/area%3Dadmin,controller%3Ddynamic,action%3Dindex";
            var request = new HttpRequestMessage(HttpMethod.Post, url);

            // Act
            var response = await Client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();

            // Assert
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Equal("Hello from dynamic controller POST: /link_generation/dynamic/index", content);
        }

        [Fact]
        public async Task DynamicPage_CanSelectPage()
        {
            // Arrange
            var url = "http://localhost/dynamicpage/page%3D%2FDynamicPage";
            var request = new HttpRequestMessage(HttpMethod.Get, url);

            // Act
            var response = await Client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();

            // Assert
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Equal("Hello from dynamic page: /DynamicPage", content);
        }

        [Fact]
        public async Task AppWithDynamicRouteAndMapRazorPages_CanRouteToRazorPage()
        {
            // Regression test for https://github.com/dotnet/aspnetcore/issues/13996
            // Arrange
            var client = Factory.WithWebHostBuilder(b => b.UseStartup<StartupForDynamicAndRazorPages>()).CreateDefaultClient();
            var url = "/PageWithLinks";

            // Act
            var response = await client.GetAsync(url);

            // Assert
            var document = await response.GetHtmlDocumentAsync();
            var editLink = document.RequiredQuerySelector("#editlink");
            Assert.Equal("/Edit/10", editLink.GetAttribute("href"));
        }

        [Fact]
        public async Task AppWithDynamicRouteAndMapRazorPages_CanRouteToDynamicController()
        {
            // Regression test for https://github.com/dotnet/aspnetcore/issues/13996
            // Arrange
            var client = Factory.WithWebHostBuilder(b => b.UseStartup<StartupForDynamicAndRazorPages>()).CreateDefaultClient();
            var url = "/de/area%3Dadmin,controller%3Ddynamic,action%3Dindex";

            // Act
            var response = await client.GetAsync(url);

            // Assert
            await response.AssertStatusCodeAsync(HttpStatusCode.OK);
            var content = await response.Content.ReadAsStringAsync();
            Assert.StartsWith("Hello from dynamic controller", content);
        }
    }
}