// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Net;
using System.Net.Http;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Net.Http.Headers;
 
namespace Microsoft.AspNetCore.Mvc.FunctionalTests;
 
public class TempDataInCookiesUsingCookieConsentTest
    : IClassFixture<MvcTestFixture<BasicWebSite.StartupWithCookieTempDataProviderAndCookieConsent>>
{
    private readonly HttpClient _client;
 
    public TempDataInCookiesUsingCookieConsentTest(
        MvcTestFixture<BasicWebSite.StartupWithCookieTempDataProviderAndCookieConsent> fixture)
    {
        var factory = fixture.Factories.FirstOrDefault() ?? fixture.WithWebHostBuilder(ConfigureWebHostBuilder);
        _client = factory.CreateDefaultClient();
    }
 
    private static void ConfigureWebHostBuilder(IWebHostBuilder builder) =>
        builder.UseStartup<BasicWebSite.StartupWithCookieTempDataProviderAndCookieConsent>();
 
    [Fact]
    public async Task CookieTempDataProviderCookie_SetInResponse_OnGrantingConsent()
    {
        // Arrange
        var nameValueCollection = new List<KeyValuePair<string, string>>
            {
                new KeyValuePair<string, string>("value", "Foo"),
            };
        var content = new FormUrlEncodedContent(nameValueCollection);
        // This response would have the consent cookie which would be sent on rest of the requests here
        var response = await _client.GetAsync("/TempData/GrantConsent");
 
        // Act 1
        response = await _client.SendAsync(GetPostRequest("/TempData/SetTempData", content, response));
 
        // Assert 1
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
 
        // Act 2
        response = await _client.SendAsync(GetRequest("/TempData/GetTempData", response));
 
        // Assert 2
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        var body = await response.Content.ReadAsStringAsync();
        Assert.Equal("Foo", body);
 
        // Act 3
        response = await _client.SendAsync(GetRequest("/TempData/GetTempData", response));
 
        // Assert 3
        Assert.Equal(HttpStatusCode.NoContent, response.StatusCode);
    }
 
    [Fact]
    public async Task CookieTempDataProviderCookie_NotSetInResponse_OnNoConsent()
    {
        // Arrange
        var nameValueCollection = new List<KeyValuePair<string, string>>
            {
                new KeyValuePair<string, string>("value", "Foo"),
            };
        var content = new FormUrlEncodedContent(nameValueCollection);
 
        // Act 1
        var response = await _client.PostAsync("/TempData/SetTempData", content);
 
        // Assert 1
        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
 
        // Act 2
        response = await _client.SendAsync(GetRequest("/TempData/GetTempData", response));
 
        // Assert 2
        Assert.Equal(HttpStatusCode.NoContent, response.StatusCode);
    }
 
    private HttpRequestMessage GetRequest(string path, HttpResponseMessage response)
    {
        var request = new HttpRequestMessage(HttpMethod.Get, path);
        SetCookieHeaders(request, response);
        return request;
    }
 
    private HttpRequestMessage GetPostRequest(string path, HttpContent content, HttpResponseMessage response)
    {
        var request = new HttpRequestMessage(HttpMethod.Post, path);
        request.Content = content;
        SetCookieHeaders(request, response);
        return request;
    }
 
    private void SetCookieHeaders(HttpRequestMessage request, HttpResponseMessage response)
    {
        IEnumerable<string> values;
        if (response.Headers.TryGetValues("Set-Cookie", out values))
        {
            foreach (var cookie in SetCookieHeaderValue.ParseList(values.ToList()))
            {
                if (cookie.Expires == null || cookie.Expires >= DateTimeOffset.UtcNow)
                {
                    request.Headers.Add("Cookie", new CookieHeaderValue(cookie.Name, cookie.Value).ToString());
                }
            }
        }
    }
}