// 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.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc.Testing;
using Xunit;

namespace AuthSamples.FunctionalTests
{
    public class DynamicSchemeTests : IClassFixture<WebApplicationFactory<DynamicSchemes.Startup>>
    {
        public DynamicSchemeTests(WebApplicationFactory<DynamicSchemes.Startup> fixture)
        {
            Client = fixture.CreateClient();
        }

        public HttpClient Client { get; }

        [Fact]
        public async Task DefaultReturns200()
        {
            // Arrange & Act
            var response = await Client.GetAsync("/");
            var content = await response.Content.ReadAsStringAsync();

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

        [Fact]
        public async Task CanAddUpdateRemoveSchemes()
        {
            // Arrange & Act
            var response = await AddScheme("New1", "NewOne");
            var content = await response.Content.ReadAsStringAsync();
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Contains("New1", content);
            Assert.Contains("NewOne", content);

            response = await AddScheme("New2", "NewTwo");
            content = await response.Content.ReadAsStringAsync();
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Contains("New1", content);
            Assert.Contains("NewOne", content);
            Assert.Contains("New2", content);
            Assert.Contains("NewTwo", content);

            response = await AddScheme("New2", "UpdateTwo");
            content = await response.Content.ReadAsStringAsync();
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Contains("New1", content);
            Assert.Contains("NewOne", content);
            Assert.Contains("New2", content);
            Assert.DoesNotContain("NewTwo", content);
            Assert.Contains("UpdateTwo", content);

            // Now remove all the schemes one at a time
            response = await Client.GetAsync("/Auth/Remove?scheme=New1");
            content = await response.Content.ReadAsStringAsync();
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.DoesNotContain("New1", content);
            Assert.DoesNotContain("NewOne", content);
            Assert.Contains("New2", content);
            Assert.DoesNotContain("NewTwo", content);
            Assert.Contains("UpdateTwo", content);

            response = await Client.GetAsync("/Auth/Remove?scheme=New2");
            content = await response.Content.ReadAsStringAsync();
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.DoesNotContain("New1", content);
            Assert.DoesNotContain("NewOne", content);
            Assert.DoesNotContain("New2", content);
            Assert.DoesNotContain("NewTwo", content);
            Assert.DoesNotContain("UpdateTwo", content);
        }

        private async Task<HttpResponseMessage> AddScheme(string name, string message)
        {
            var goToSignIn = await Client.GetAsync("/");
            var signIn = await TestAssert.IsHtmlDocumentAsync(goToSignIn);

            var form = TestAssert.HasForm(signIn);
            return await Client.SendAsync(form, new Dictionary<string, string>()
            {
                ["scheme"] = name,
                ["OptionsMessage"] = message,
            });

        }

    }
}