using Microsoft.Extensions.Configuration;
using System.Net.Http.Json;
using System.Text.Json;

namespace Shogi.AcceptanceTests.TestSetup;

/// <summary>
/// Acceptance Test fixture for tests which assert features for Microsoft accounts.
/// </summary>
public class AatTestFixture : IAsyncLifetime, IDisposable
{
	protected static readonly JsonSerializerOptions SerializerOptions = new(JsonSerializerDefaults.Web);

	private readonly string testAccountPassword;
	private bool disposedValue;

	public AatTestFixture()
	{
		this.Configuration = new ConfigurationBuilder()
			.AddJsonFile("appsettings.json")
			.AddJsonFile("appsettings.Development.json", optional: true)
			.Build();

		var baseUrl = this.Configuration["ServiceUrl"] ?? throw new InvalidOperationException();
		this.HttpClient = new HttpClient
		{
			BaseAddress = new Uri(baseUrl, UriKind.Absolute)
		};
		this.OtherHttpClient = new HttpClient
		{
			BaseAddress = new Uri(baseUrl, UriKind.Absolute)
		};

		this.testAccountPassword = this.Configuration["TestUserPassword"]!;
		if (string.IsNullOrWhiteSpace(this.testAccountPassword))
		{
			throw new InvalidOperationException("TestUserPassword is not configured.");
		}

	}

	public IConfiguration Configuration { get; private set; }
	public HttpClient HttpClient { get; }
	public HttpClient OtherHttpClient { get; }

	protected async Task LoginToTestAccounts()
	{
		var response = await this.HttpClient.PostAsJsonAsync(
			RelativeUri("login"),
			new
			{
				email = "aat-account",
				password = this.testAccountPassword,
			},
			options: SerializerOptions);

		response.IsSuccessStatusCode.Should().BeTrue(because: "The test account should exist. If it does not, use the /Account/TestAccount route to create it.");

		var bearerToken = (await response.Content.ReadFromJsonAsync<LoginResponse>())?.AccessToken;
		this.HttpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", bearerToken);

		response = await this.HttpClient.PostAsJsonAsync(
			RelativeUri("login"),
			new
			{
				email = "aat-account-2",
				password = this.testAccountPassword,
			},
			options: SerializerOptions);

		response.IsSuccessStatusCode.Should().BeTrue(because: "The test account should exist. If it does not, use the /Account/TestAccount route to create it.");

		bearerToken = (await response.Content.ReadFromJsonAsync<LoginResponse>())?.AccessToken;
		this.OtherHttpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", bearerToken);
	}

	public async Task InitializeAsync()
	{
		await this.LoginToTestAccounts();
	}

	protected virtual void Dispose(bool disposing)
	{
		if (!this.disposedValue)
		{
			if (disposing)
			{
				this.HttpClient.Dispose();
			}

			this.disposedValue = true;
		}
	}

	public Task DisposeAsync()
	{
		this.Dispose(true);
		return Task.CompletedTask;
	}

	public void Dispose()
	{
		this.Dispose(disposing: true);
		GC.SuppressFinalize(this);
	}

	protected static Uri RelativeUri(string s) => new(s, UriKind.Relative);

	private class LoginResponse
	{
		public string AccessToken { get; set; } = string.Empty;
	}

}