using Microsoft.Extensions.Configuration;
using Microsoft.Identity.Client;
using System.Net.Http.Headers;

namespace Shogi.AcceptanceTests.TestSetup
{
	public class AATFixture : IAsyncLifetime, IDisposable
	{
		private bool disposedValue;
		private readonly IConfidentialClientApplication app;

		public AATFixture()
		{
			Configuration = new ConfigurationBuilder()
				.AddJsonFile("appsettings.json")
				.AddEnvironmentVariables()
				.AddUserSecrets<AATFixture>()
				.Build();

			var azure = Configuration.GetSection("Auth");
			app = ConfidentialClientApplicationBuilder.Create(azure["ClientId"])
				.WithTenantId(azure["TenantId"])
				.WithClientSecret(azure["SecretValue"])
				.Build();

			Service = new HttpClient
			{
				BaseAddress = new Uri(Configuration["ServiceUrl"], UriKind.Absolute)
			};
		}

		public IConfiguration Configuration { get; private set; }


		public HttpClient Service { get; }

		public async Task InitializeAsync()
		{
			var authResult = await app
				.AcquireTokenForClient(Configuration.GetSection("Auth:Scopes").Get<string[]>())
				.ExecuteAsync();

			authResult.Should().NotBeNull();
			authResult.AccessToken.Should().NotBeNullOrEmpty();

			Service.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", authResult.AccessToken);
		}

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

				disposedValue = true;
			}
		}

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

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