using PrivaPub.Tests.Support;
using PrivaPub.Tests.Support.Host;

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

namespace PrivaPub.Tests.Http
{
	// a public thread names its replies and its conversation (owner decision 2026-10-06), and they list only what is public
	// or unlisted; a followers-only post names neither
	[Trait("Category", "Integration")]
	public sealed class ThreadCollectionsTests : IAsyncLifetime
	{
		PrivaPubHost _host;

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

		public ValueTask DisposeAsync() => ValueTask.CompletedTask;

		static string PathOf(JsonObject status) => new Uri(status.Text("uri")).AbsolutePath;

		static string[] Items(JsonNode collection) => collection["orderedItems"]!.AsArray().Select(i => i!.GetValue<string>()).ToArray();

		[Fact]
		public async Task A_public_post_names_its_replies_and_context_which_list_only_public_answers()
		{
			var alice = await _host.Mastodon("alice");
			var carol = await _host.Mastodon("carol");
			var root = await alice.Status("a public question");
			var answer = await carol.Status("a public answer", ("in_reply_to_id", root.Text("id")));
			var hidden = await carol.Status("for my followers", ("in_reply_to_id", root.Text("id")), ("visibility", "private"));
			var deeper = await alice.Status("and a deeper one", ("in_reply_to_id", answer.Text("id")), ("visibility", "unlisted"));

			var note = (await _host.ActivityPub(PathOf(root))).Ok().Object;
			Assert.Equal(root.Text("uri") + "/replies", note.Text("replies"));
			Assert.Equal(root.Text("uri") + "/context", note.Text("context"));
			var answerNote = (await _host.ActivityPub(PathOf(deeper))).Ok().Object;
			Assert.Equal(root.Text("uri") + "/context", answerNote.Text("context"));

			var replies = (await _host.ActivityPub(PathOf(root) + "/replies")).Ok().Object;
			Assert.Equal(new[] { answer.Text("uri") }, Items(replies));

			var context = (await _host.ActivityPub(PathOf(root) + "/context")).Ok().Object;
			Assert.Equal(new[] { root.Text("uri"), answer.Text("uri"), deeper.Text("uri") }, Items(context));
			Assert.Equal(alice.Uri, context.Text("attributedTo"));
			Assert.DoesNotContain(hidden.Text("uri"), Items(context));
		}

		[Fact]
		public async Task A_followers_only_post_names_neither_and_serves_neither()
		{
			var alice = await _host.Mastodon("alice");
			var quiet = await alice.Status("for my followers", ("visibility", "private"));

			Assert.Equal(HttpStatusCode.NotFound, (await _host.ActivityPub(PathOf(quiet) + "/replies")).Status);
			Assert.Equal(HttpStatusCode.NotFound, (await _host.ActivityPub(PathOf(quiet) + "/context")).Status);
		}
	}
}