using MongoDB.Entities;

using PrivaPub.ClientModels.Post;
using PrivaPub.ClientModels;
using PrivaPub.Models.Post;
using PrivaPub.Models.User;
using PrivaPub.Tests.Support;

namespace PrivaPub.Tests.Domain
{
	[Trait("Category", "Integration")]
	public sealed class OutboxTests : 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();
		}

		async Task<ForeignAvatar> Known(RemoteActor actor) =>
			await _harness.Remote.GetActor(actor.Id, refresh: false, TestContext.Current.CancellationToken);

		[Fact]
		public async Task The_audience_follows_mastodons_table()
		{
			var token = TestContext.Current.CancellationToken;
			var (_, alice) = await _harness.Persona("alice");
			var follower = new RemoteActor(_harness.Peer, "follower");
			var mentioned = await Known(new RemoteActor(_harness.Peer, "mentioned"));
			var parentAuthor = await Known(new RemoteActor(_harness.Peer, "parent"));
			await _harness.FollowedBy(alice, follower);
			var mention = new PostMention { ActorURI = mentioned.ActorURI };

			async Task<IReadOnlyList<string>> Audience(PostVisibility visibility, string replyTo = default) =>
				await _harness.Outbox.Audience(alice, new Post { Visibility = visibility, Mentions = new() { mention }, To = new() { mentioned.ActorURI }, InReplyToAccountId = replyTo }, token);

			Assert.Equal(new[] { follower.SharedInbox, mentioned.InboxURL }, await Audience(PostVisibility.Public));
			Assert.Equal(new[] { follower.SharedInbox, mentioned.InboxURL, parentAuthor.InboxURL }, await Audience(PostVisibility.Unlisted, parentAuthor.ID));
			Assert.Equal(new[] { follower.SharedInbox, mentioned.InboxURL }, await Audience(PostVisibility.FollowersOnly));
			Assert.Equal(new[] { mentioned.InboxURL }, await Audience(PostVisibility.Direct, parentAuthor.ID));
			Assert.Empty(await Audience(PostVisibility.Circle));
		}

		[Fact]
		public async Task A_post_is_created_edited_and_deleted_for_its_audience()
		{
			var token = TestContext.Current.CancellationToken;
			var (root, alice) = await _harness.Persona("alice");
			var follower = new RemoteActor(_harness.Peer, "follower");
			await _harness.FollowedBy(alice, follower);

			var created = await _harness.Posts.InsertPost(root, new InsertPostForm { AvatarId = alice.Id, Text = "first", Visibility = "followersonly" }, token);
			var postId = ((ViewPost)created.Data).Id;
			await _harness.Posts.UpdatePost(root, new UpdatePostForm { AvatarId = alice.Id, PostId = postId, Text = "second", SpoilerText = "cw" }, token);
			await _harness.Posts.DeletePost(root, new DeletePostForm { AvatarId = alice.Id, PostId = postId }, token);

			var sent = await _harness.Outgoing(follower.SharedInbox);
			Assert.Equal(new[] { "Create", "Update", "Delete" }, sent.Select(a => a["type"]!.GetValue<string>()));
			Assert.DoesNotContain(sent[0]["to"]!.AsArray(), n => n!.GetValue<string>().EndsWith("#Public"));
			// Pleroma reads an empty cc without a "/followers" address as a direct message
			Assert.Contains(sent[0]["object"]!["cc"]!.AsArray(), n => n!.GetValue<string>() == alice.Followers);
			Assert.Equal("cw", sent[1]["object"]!["summary"]!.GetValue<string>());
			Assert.NotNull(sent[1]["object"]!["updated"]);
			Assert.Equal(sent[0]["to"]!.ToJsonString(), sent[2]["to"]!.ToJsonString());

			var stored = await DB.Default.Find<Post>().OneAsync(postId, token);
			Assert.NotNull(stored.DeletedAt);
			Assert.Null(stored.ContentHtml);
			Assert.Empty(stored.Revisions);
		}

		[Fact]
		public async Task Someone_elses_post_cannot_be_edited()
		{
			var token = TestContext.Current.CancellationToken;
			var (root, alice) = await _harness.Persona("alice");
			var (otherRoot, bob) = await _harness.Persona("bob");
			var created = await _harness.Posts.InsertPost(root, new InsertPostForm { AvatarId = alice.Id, Text = "mine" }, token);

			var result = await _harness.Posts.UpdatePost(otherRoot, new UpdatePostForm { AvatarId = bob.Id, PostId = ((ViewPost)created.Data).Id, Text = "yours" }, token);

			Assert.False(result.IsValid);
			Assert.Equal(404, result.StatusCode);
		}
	}
}