using Microsoft.Extensions.Caching.Memory;

using MongoDB.Entities;

using PrivaPub.Api.Mastodon.Infrastructure;
using PrivaPub.Api.Mastodon.Mappers;
using PrivaPub.ClientModels.Post;
using PrivaPub.ClientModels.Social;
using PrivaPub.Models.Post;
using PrivaPub.Tests.Support;

using System.Text.Json;

namespace PrivaPub.Tests.Api
{
	[Trait("Category", "Integration")]
	public sealed class PersonaSeparationTests : IAsyncLifetime
	{
		Harness _harness;

		public async ValueTask InitializeAsync()
		{
			Assert.SkipUnless(MongoFixture.Enabled, MongoFixture.Skip);
			_harness = await Harness.Start();
		}

		public async ValueTask DisposeAsync()
		{
			if (_harness != default)
				await _harness.DisposeAsync();
		}

		[Fact]
		public async Task Nothing_shown_to_one_persona_names_its_sibling()
		{
			var token = TestContext.Current.CancellationToken;
			var (root, alice) = await _harness.Persona("alice");
			var (_, sibling) = await _harness.Persona("sibling", root);
			var (bobRoot, bob) = await _harness.Persona("bob");
			await _harness.Follows.Follow(root, new FollowForm { AvatarId = alice.Id, Target = bob.UserName }, token);
			await _harness.Follows.Follow(root, new FollowForm { AvatarId = sibling.Id, Target = bob.UserName }, token);
			await _harness.Posts.InsertPost(root, new InsertPostForm { AvatarId = sibling.Id, Text = "from the sibling" }, token);
			await _harness.Posts.InsertPost(root, new InsertPostForm { AvatarId = alice.Id, Text = "from alice" }, token);
			await _harness.Posts.InsertPost(bobRoot, new InsertPostForm { AvatarId = bob.Id, Text = "hi both" }, token);

			var mapper = new MastodonMapper(_harness.Db, _harness.Local);
			var account = await mapper.Local(alice, withSource: true, token);
			var homeIds = (await _harness.Db.TimelineEntries.Match(e => e.AvatarId == alice.Id).ExecuteAsync(token)).Select(e => e.PostId).ToList();
			var home = await _harness.Db.Posts.Match(p => homeIds.Contains(p.ID)).ExecuteAsync(token);
			var statuses = await mapper.Statuses(home, alice.Id, token);
			var bobAsSeenByAlice = await mapper.Account(bob.Id, token);

			var json = JsonSerializer.Serialize(new object[] { account, statuses, bobAsSeenByAlice }, MastodonJson.Options);
			Assert.DoesNotContain(sibling.Id, json);
			Assert.DoesNotContain(sibling.UserName, json);
			Assert.DoesNotContain(root, json);
			Assert.Contains("hi both", json);
			Assert.Equal(2, bobAsSeenByAlice.FollowersCount);
		}
	}
}