using MongoDB.Entities;

using PrivaPub.Federation.Actors;
using PrivaPub.Federation.Objects;
using PrivaPub.Federation.Outbox;
using PrivaPub.Federation.Rendering;
using PrivaPub.Models.Federation;
using PrivaPub.Models.Group;
using PrivaPub.Models.Post;
using PrivaPub.Models.User;
using PrivaPub.StaticServices;

using System.Text.Json.Nodes;

using static PrivaPub.Federation.Inbox.ForeignMembers;
using static PrivaPub.Federation.Objects.ActivityJson;

using DmPostEntity = PrivaPub.Models.Post.DmPost;
using PostEntity = PrivaPub.Models.Post.Post;

namespace PrivaPub.Federation.Inbox.Handlers
{
	public class UpdateHandler : IActivityHandler
	{
		readonly DbEntities _dbEntities;
		readonly ILocalActorService _localActors;
		readonly IRemoteActorService _remoteActors;
		readonly IDeliveryService _delivery;

		public UpdateHandler(DbEntities dbEntities, ILocalActorService localActors, IRemoteActorService remoteActors, IDeliveryService delivery)
		{
			_dbEntities = dbEntities;
			_localActors = localActors;
			_remoteActors = remoteActors;
			_delivery = delivery;
		}

		public string Type => "Update";

		public async Task Handle(JsonNode activity, ForeignAvatar actor, CancellationToken token)
		{
			var update = activity;

			var inner = update["object"];
			if (Id(inner) == actor.ActorURI)
			{
				await _remoteActors.GetActor(actor.ActorURI, refresh: true, token);
				return;
			}
			if (inner is not JsonObject || Id(inner["attributedTo"]) != actor.ActorURI || !Origin.Same(Id(inner), actor.ActorURI))
				return;

			var objectUri = Id(inner);
			var text = ContentSanitizer.Html(Value(inner, "content"));
			await DB.Default.Update<PostEntity>()
				.Match(p => p.ObjectURI == objectUri && p.ActorURI == actor.ActorURI)
				.Modify(p => p.Text, text)
				.Modify(p => p.ContentHtml, text)
				.Modify(p => p.UpdateDate, DateTime.UtcNow)
				.ExecuteAsync(token);
			await DB.Default.Update<DmPostEntity>()
				.Match(p => p.ObjectURI == objectUri && p.ActorURI == actor.ActorURI)
				.Modify(p => p.Text, text)
				.Modify(p => p.ContentHtml, text)
				.Modify(p => p.UpdateDate, DateTime.UtcNow)
				.ExecuteAsync(token);
			return;
				}
	}
}