using MongoDB.Driver;
using MongoDB.Entities;

using PrivaPub.Federation.Actors;
using PrivaPub.Infrastructure.Data;
using PrivaPub.Infrastructure.Data.Migrations;
using PrivaPub.Models;
using PrivaPub.Models.Federation;
using PrivaPub.Models.User;
using PrivaPub.StaticServices;
using PrivaPub.Tests.Support;

namespace PrivaPub.Tests.Infrastructure
{
	[Trait("Category", "Integration")]
	public class IndexTests
	{
		[Fact]
		public async Task Duplicates_are_removed_and_the_unique_indexes_then_hold()
		{
			Assert.SkipUnless(MongoFixture.Enabled, MongoFixture.Skip);
			var token = TestContext.Current.CancellationToken;
			var actorUri = $"https://r.example/users/{Guid.NewGuid():N}";
			var localId = Guid.NewGuid().ToString("N")[..24];
			await DB.Default.SaveAsync(new[]
			{
				new ForeignAvatar { ActorURI = actorUri, Name = "old", UpdatedAt = DateTime.UtcNow.AddDays(-2) },
				new ForeignAvatar { ActorURI = actorUri, Name = "new", UpdatedAt = DateTime.UtcNow }
			}, token);
			await DB.Default.SaveAsync(new[]
			{
				new Follower { LocalActorId = localId, ActorURI = actorUri, IsAccepted = false },
				new Follower { LocalActorId = localId, ActorURI = actorUri, IsAccepted = true }
			}, token);

			await new _001_deduplicate_before_unique_indexes().UpgradeAsync();
			await Indexes.Create(token);

			Assert.Equal("new", (await DB.Default.Find<ForeignAvatar>().Match(a => a.ActorURI == actorUri).ExecuteSingleAsync(token)).Name);
			Assert.True((await DB.Default.Find<Follower>().Match(f => f.LocalActorId == localId).ExecuteSingleAsync(token)).IsAccepted);
			var duplicate = await Assert.ThrowsAsync<MongoWriteException>(async () =>
				await DB.Default.SaveAsync(new ForeignAvatar { ActorURI = actorUri }, token));
			Assert.Equal(ServerErrorCategory.DuplicateKey, duplicate.WriteError.Category);
		}

		[Fact]
		public async Task A_username_is_reserved_once_across_personas_and_groups()
		{
			Assert.SkipUnless(MongoFixture.Enabled, MongoFixture.Skip);
			var token = TestContext.Current.CancellationToken;
			await Indexes.Create(token);
			var local = new LocalActorService(new DbEntities(), new StaticOptions<AppConfiguration>(new AppConfiguration { BackendBaseAddress = "https://privapub.test" }));
			var name = $"n{Guid.NewGuid():N}"[..20];

			Assert.True(await local.TryReserveUserName(name, LocalActorKind.Person, "a", token));
			Assert.False(await local.TryReserveUserName(name.ToUpperInvariant(), LocalActorKind.Group, "b", token));
			Assert.True(await local.IsUserNameTaken(name, token));
			Assert.False(await local.TryReserveUserName("admin", LocalActorKind.Person, "c", token));
			Assert.False(await local.TryReserveUserName(LocalActorService.InstanceUserName, LocalActorKind.Person, "c", token));
		}
	}
}