using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.Extensions.DependencyInjection;

using MongoDB.Entities;

using PrivaPub.Federation.Inbox;
using PrivaPub.Infrastructure.Jobs;
using PrivaPub.Models;
using PrivaPub.Models.Jobs;
using PrivaPub.Models.Post;
using PrivaPub.Tests.Support;
using PrivaPub.Tests.Support.Host;

using System.Net;
using System.Text.Json.Nodes;

namespace PrivaPub.Tests.Http
{
	[Trait("Category", "Integration")]
	public sealed class HostBootTests : IAsyncLifetime
	{
		PrivaPubHost _host;

		public async ValueTask InitializeAsync()
		{
			Assert.SkipUnless(MongoFixture.Enabled, MongoFixture.Skip);
			_host = await PrivaPubHost.Shared();
		}

		public ValueTask DisposeAsync() => ValueTask.CompletedTask;

		[Fact]
		public async Task The_host_shares_the_fixture_database()
		{
			Assert.True(await DB.Default.Find<AppConfiguration>().ExecuteAnyAsync(TestContext.Current.CancellationToken));
			using var client = _host.Client();
			Assert.Equal(HttpStatusCode.OK, (await client.GetAsync("/build.json", TestContext.Current.CancellationToken)).StatusCode);
		}

		[Fact]
		public async Task The_harness_handles_the_same_activities_as_the_server()
		{
			await using var harness = await Harness.Start();
			var registered = _host.Services.GetServices<IActivityHandler>().Select(h => h.GetType()).OrderBy(t => t.Name);
			var harnessed = harness.Handlers.Select(h => h.GetType()).OrderBy(t => t.Name);

			Assert.Equal(registered, harnessed);
		}

		[Fact]
		public void Every_job_kind_has_exactly_one_handler()
		{
			var handlers = _host.Services.GetServices<IJobHandler>().GroupBy(h => h.Kind).ToDictionary(g => g.Key, g => g.Count());

			foreach (var kind in Enum.GetValues<JobKind>())
				Assert.True(handlers.GetValueOrDefault(kind) == 1, $"{kind} has {handlers.GetValueOrDefault(kind)} handlers");
		}

		[Fact]
		public void Every_controller_and_page_model_can_be_made()
		{
			using var scope = _host.Services.CreateScope();
			var controllers = _host.Get<IActionDescriptorCollectionProvider>().ActionDescriptors.Items
				.OfType<ControllerActionDescriptor>()
				.Select(d => d.ControllerTypeInfo.AsType())
				.Distinct()
				.ToList();
			var pages = typeof(Program).Assembly.GetTypes().Where(t => t.IsSubclassOf(typeof(PageModel)) && !t.IsAbstract).ToList();

			Assert.NotEmpty(controllers);
			Assert.NotEmpty(pages);
			foreach (var type in controllers.Concat(pages))
				Assert.NotNull(ActivatorUtilities.CreateInstance(scope.ServiceProvider, type));
		}

		[Fact]
		public void The_service_graph_is_valid()
		{
			var services = new ServiceCollection();
			foreach (var descriptor in _host.Registered)
				((ICollection<ServiceDescriptor>)services).Add(descriptor);

			using var provider = services.BuildServiceProvider(new ServiceProviderOptions { ValidateOnBuild = true, ValidateScopes = true });
		}

		[Fact]
		public async Task Swagger_is_not_served_outside_development()
		{
			using var client = _host.Client();

			Assert.Equal(HttpStatusCode.NotFound, (await client.GetAsync("/swagger/index.html", TestContext.Current.CancellationToken)).StatusCode);
		}

		[Fact]
		public async Task A_persona_gets_a_mastodon_token_through_the_real_code_flow()
		{
			var root = await _host.SignUp();
			var persona = await _host.Persona(root, "boot");

			var token = await _host.MastodonToken(persona);

			using var client = _host.As(token);
			var account = await client.GetStringAsync("/api/v1/accounts/verify_credentials", TestContext.Current.CancellationToken);
			Assert.Contains($"\"id\":\"{persona.Id}\"", account);
			Assert.DoesNotContain(root.Id, account);
			Assert.DoesNotContain(root.UserName, account);
		}
	
		[Fact]
		public async Task A_signed_delivery_through_the_real_route_is_queued_and_stored()
		{
			var token = TestContext.Current.CancellationToken;
			await using var peer = await Peer.Start();
			var persona = await _host.Persona(await _host.SignUp(), "mouth");
			var bob = new RemoteActor(peer, "bob");
			var noteId = $"{peer.A}/notes/{Guid.NewGuid():N}";
			var activity = new JsonObject
			{
				["id"] = noteId + "/activity",
				["type"] = "Create",
				["actor"] = bob.Id,
				["to"] = new JsonArray($"{PrivaPubHost.Base}/peasants/{persona.UserName}"),
				["object"] = new JsonObject
				{
					["id"] = noteId,
					["type"] = "Note",
					["attributedTo"] = bob.Id,
					["to"] = new JsonArray($"{PrivaPubHost.Base}/peasants/{persona.UserName}"),
					["content"] = "<p>hello through the front door</p>",
					["published"] = DateTime.UtcNow.ToString("O")
				}
			};
			using var client = _host.Client();

			var response = await client.SendAsync(bob.SignedPost($"/peasants/{persona.UserName}/mouth", activity), token);

			Assert.Equal(HttpStatusCode.Accepted, response.StatusCode);
			Assert.Equal(1, await _host.RunInbox(noteId + "/activity", token));
			var stored = await DB.Default.Find<Post>().Match(p => p.ObjectURI == noteId).ExecuteFirstAsync(token);
			Assert.Equal(PostVisibility.Direct, stored.Visibility);
			Assert.Contains("front door", stored.ContentHtml);
		}
	}
}