Iceshrimp.NET/Iceshrimp.Backend/Core/Services/NoteService.cs

1329 lines
No EOL
49 KiB
C#

using System.Diagnostics.CodeAnalysis;
using AsyncKeyedLock;
using Iceshrimp.Backend.Core.Configuration;
using Iceshrimp.Backend.Core.Database;
using Iceshrimp.Backend.Core.Database.Tables;
using Iceshrimp.Backend.Core.Extensions;
using Iceshrimp.Backend.Core.Federation.ActivityStreams.Types;
using Iceshrimp.Backend.Core.Helpers;
using Iceshrimp.Backend.Core.Helpers.LibMfm.Conversion;
using Iceshrimp.Backend.Core.Helpers.LibMfm.Parsing;
using static Iceshrimp.Parsing.MfmNodeTypes;
using Iceshrimp.Backend.Core.Middleware;
using Iceshrimp.Backend.Core.Queues;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;
namespace Iceshrimp.Backend.Core.Services;
using MentionQuintuple =
(List<string> mentionedUserIds,
List<string> mentionedLocalUserIds,
List<Note.MentionedUser> mentions,
List<Note.MentionedUser> remoteMentions,
Dictionary<(string usernameLower, string webDomain), string> splitDomainMapping);
[SuppressMessage("ReSharper", "SuggestBaseTypeForParameterInConstructor",
Justification = "We need IOptionsSnapshot for config hot reload")]
public class NoteService(
ILogger<NoteService> logger,
DatabaseContext db,
ActivityPub.UserResolver userResolver,
IOptionsSnapshot<Config.InstanceSection> config,
ActivityPub.ActivityFetcherService fetchSvc,
ActivityPub.ActivityDeliverService deliverSvc,
ActivityPub.NoteRenderer noteRenderer,
ActivityPub.UserRenderer userRenderer,
ActivityPub.MentionsResolver mentionsResolver,
DriveService driveSvc,
NotificationService notificationSvc,
EventService eventSvc,
ActivityPub.ActivityRenderer activityRenderer,
EmojiService emojiSvc,
FollowupTaskService followupTaskSvc,
ActivityPub.ObjectResolver objectResolver,
QueueService queueSvc,
PollService pollSvc
)
{
private const int DefaultRecursionLimit = 100;
private readonly List<string> _resolverHistory = [];
private int _recursionLimit = DefaultRecursionLimit;
private static readonly AsyncKeyedLocker<string> KeyedLocker = new(o =>
{
o.PoolSize = 100;
o.PoolInitialFill = 5;
});
public async Task<Note> CreateNoteAsync(
User user, Note.NoteVisibility visibility, string? text = null, string? cw = null, Note? reply = null,
Note? renote = null, IReadOnlyCollection<DriveFile>? attachments = null, Poll? poll = null,
bool localOnly = false
)
{
if ((text?.Length ?? 0) + (cw?.Length ?? 0) > config.Value.CharacterLimit)
throw GracefulException
.BadRequest($"Text & content warning cannot exceed {config.Value.CharacterLimit} characters in total");
if (text is { Length: > 100000 })
throw GracefulException.BadRequest("Text cannot be longer than 100.000 characters");
if (cw is { Length: > 100000 })
throw GracefulException.BadRequest("Content warning cannot be longer than 100.000 characters");
if (renote?.IsPureRenote ?? false)
throw GracefulException.BadRequest("Cannot renote or quote a pure renote");
if (reply?.IsPureRenote ?? false)
throw GracefulException.BadRequest("Cannot reply to a pure renote");
if (poll is { Choices.Count: < 2 })
throw GracefulException.BadRequest("Polls must have at least two options");
if (renote is { Visibility: > Note.NoteVisibility.Home } &&
renote.User != user &&
text == null &&
poll == null &&
attachments is not { Count: > 0 })
{
throw GracefulException.BadRequest("You're not allowed to renote this note");
}
if (renote != null && renote.User != user)
{
if (await db.Blockings.AnyAsync(p => p.Blockee == user && p.Blocker == renote.User))
throw GracefulException.Forbidden($"You are not allowed to interact with @{renote.User.Acct}");
}
var (mentionedUserIds, mentionedLocalUserIds, mentions, remoteMentions, splitDomainMapping) =
await ResolveNoteMentionsAsync(text);
// ReSharper disable EntityFramework.UnsupportedServerSideFunctionCall
if (mentionedUserIds.Count > 0)
{
var blockAcct = await db.Users
.Where(p => mentionedUserIds.Contains(p.Id) &&
(p.IsBlocking(user) || p.IsBlockedBy(user)))
.Select(p => p.Acct)
.FirstOrDefaultAsync();
if (blockAcct != null)
throw GracefulException.Forbidden($"You're not allowed to interact with @{blockAcct}");
}
// ReSharper restore EntityFramework.UnsupportedServerSideFunctionCall
if (text != null)
text = mentionsResolver.ResolveMentions(text, null, mentions, splitDomainMapping);
if (attachments != null && attachments.Any(p => p.UserId != user.Id))
throw GracefulException.BadRequest("Refusing to create note with files belonging to someone else");
if (cw != null && string.IsNullOrWhiteSpace(cw))
cw = null;
if ((user.UserSettings?.PrivateMode ?? false) && visibility < Note.NoteVisibility.Followers)
visibility = Note.NoteVisibility.Followers;
var tags = ResolveHashtags(text);
var note = new Note
{
Id = IdHelpers.GenerateSlowflakeId(),
Text = text?.Trim(),
Cw = cw?.Trim(),
Reply = reply,
ReplyUserId = reply?.UserId,
ReplyUserHost = reply?.UserHost,
Renote = renote,
RenoteUserId = renote?.UserId,
RenoteUserHost = renote?.UserHost,
User = user,
CreatedAt = DateTime.UtcNow,
UserHost = null,
Visibility = visibility,
FileIds = attachments?.Select(p => p.Id).ToList() ?? [],
AttachedFileTypes = attachments?.Select(p => p.Type).ToList() ?? [],
Mentions = mentionedUserIds,
VisibleUserIds = visibility == Note.NoteVisibility.Specified ? mentionedUserIds : [],
MentionedRemoteUsers = remoteMentions,
ThreadId = reply?.ThreadId ?? reply?.Id,
Tags = tags,
LocalOnly = localOnly
};
if (poll != null)
{
poll.Note = note;
poll.UserId = note.User.Id;
poll.UserHost = note.UserHost;
poll.Votes = poll.Choices.Select(_ => 0).ToList();
poll.NoteVisibility = note.Visibility;
await db.AddAsync(poll);
note.HasPoll = true;
await EnqueuePollExpiryTask(poll);
}
await UpdateNoteCountersAsync(note, true);
await db.AddAsync(note);
await db.SaveChangesAsync();
eventSvc.RaiseNotePublished(this, note);
await notificationSvc.GenerateMentionNotifications(note, mentionedLocalUserIds);
await notificationSvc.GenerateReplyNotifications(note, mentionedLocalUserIds);
await notificationSvc.GenerateRenoteNotification(note);
if (user.Host != null)
{
_ = followupTaskSvc.ExecuteTask("UpdateInstanceNoteCounter", async provider =>
{
var bgDb = provider.GetRequiredService<DatabaseContext>();
var bgInstanceSvc = provider.GetRequiredService<InstanceService>();
var dbInstance = await bgInstanceSvc.GetUpdatedInstanceMetadataAsync(user);
await bgDb.Instances.Where(p => p.Id == dbInstance.Id)
.ExecuteUpdateAsync(p => p.SetProperty(i => i.NotesCount, i => i.NotesCount + 1));
});
return note;
}
if (localOnly) return note;
var actor = userRenderer.RenderLite(user);
ASActivity activity = note is { IsPureRenote: true, Renote: not null }
? ActivityPub.ActivityRenderer.RenderAnnounce(noteRenderer.RenderLite(note.Renote),
note.GetPublicUri(config.Value), actor, note.Visibility,
user.GetPublicUri(config.Value) + "/followers")
: ActivityPub.ActivityRenderer.RenderCreate(await noteRenderer.RenderAsync(note, mentions), actor);
List<string> additionalUserIds =
note is { IsPureRenote: true, Renote: not null, Visibility: < Note.NoteVisibility.Followers }
? [note.Renote.User.Id]
: [];
var recipients = await db.Users
.Where(p => mentionedUserIds.Concat(additionalUserIds).Contains(p.Id))
.Select(p => new User { Id = p.Id })
.ToListAsync();
if (note.Visibility == Note.NoteVisibility.Specified)
await deliverSvc.DeliverToAsync(activity, user, recipients.ToArray());
else
await deliverSvc.DeliverToFollowersAsync(activity, user, recipients);
return note;
}
/// <remarks>
/// This needs to be called before SaveChangesAsync on create & after on delete
/// </remarks>
private async Task UpdateNoteCountersAsync(Note note, bool create)
{
var diff = create ? 1 : -1;
if (note is { Renote.Id: not null, IsPureRenote: true })
{
if (!db.Notes.Any(p => p.UserId == note.User.Id && p.RenoteId == note.Renote.Id && p.IsPureRenote))
{
await db.Notes.Where(p => p.Id == note.Renote.Id)
.ExecuteUpdateAsync(p => p.SetProperty(n => n.RenoteCount, n => n.RenoteCount + diff));
}
}
else
{
await db.Users.Where(p => p.Id == note.User.Id)
.ExecuteUpdateAsync(p => p.SetProperty(u => u.NotesCount, u => u.NotesCount + diff));
}
if (note.Reply != null)
{
await db.Notes.Where(p => p.Id == note.Reply.Id)
.ExecuteUpdateAsync(p => p.SetProperty(n => n.RepliesCount, n => n.RepliesCount + diff));
}
}
public async Task<Note> UpdateNoteAsync(
Note note, string? text = null, string? cw = null, IReadOnlyCollection<DriveFile>? attachments = null,
Poll? poll = null
)
{
var noteEdit = new NoteEdit
{
Id = IdHelpers.GenerateSlowflakeId(),
UpdatedAt = DateTime.UtcNow,
Note = note,
Text = note.Text,
Cw = note.Cw,
FileIds = note.FileIds
};
if (text?.Length > config.Value.CharacterLimit)
throw GracefulException.BadRequest($"Text cannot be longer than {config.Value.CharacterLimit} characters");
if (cw?.Length > config.Value.CharacterLimit)
throw GracefulException
.BadRequest($"Content warning cannot be longer than {config.Value.CharacterLimit} characters");
if (text is { Length: > 100000 })
throw GracefulException.BadRequest("Text cannot be longer than 100.000 characters");
if (cw is { Length: > 100000 })
throw GracefulException.BadRequest("Content warning cannot be longer than 100.000 characters");
if (attachments != null && attachments.Any(p => p.UserId != note.User.Id))
throw GracefulException.BadRequest("Refusing to create note with files belonging to someone else");
var previousMentionedLocalUserIds = await db.Users.Where(p => note.Mentions.Contains(p.Id) && p.Host == null)
.Select(p => p.Id)
.ToListAsync();
var previousMentionedUserIds = await db.Users.Where(p => note.Mentions.Contains(p.Id))
.Select(p => p.Id)
.ToListAsync();
var (mentionedUserIds, mentionedLocalUserIds, mentions, remoteMentions, splitDomainMapping) =
await ResolveNoteMentionsAsync(text);
if (text != null)
text = mentionsResolver.ResolveMentions(text, null, mentions, splitDomainMapping);
if (cw != null && string.IsNullOrWhiteSpace(cw))
cw = null;
// ReSharper disable EntityFramework.UnsupportedServerSideFunctionCall
if (mentionedUserIds.Except(previousMentionedUserIds).Any())
{
var blockAcct = await db.Users
.Where(p => mentionedUserIds.Except(previousMentionedUserIds).Contains(p.Id) &&
(p.IsBlocking(note.User) || p.IsBlockedBy(note.User)))
.Select(p => p.Acct)
.FirstOrDefaultAsync();
if (blockAcct != null)
throw GracefulException.Forbidden($"You're not allowed to interact with @{blockAcct}");
}
// ReSharper restore EntityFramework.UnsupportedServerSideFunctionCall
mentionedLocalUserIds = mentionedLocalUserIds.Except(previousMentionedLocalUserIds).ToList();
note.Text = text?.Trim();
note.Cw = cw?.Trim();
note.Tags = ResolveHashtags(text);
if (text is not null)
{
note.Mentions = mentionedUserIds;
note.MentionedRemoteUsers = remoteMentions;
if (note.Visibility == Note.NoteVisibility.Specified)
{
if (note.ReplyUserId != null)
mentionedUserIds.Add(note.ReplyUserId);
// We want to make sure not to revoke visibility
note.VisibleUserIds = mentionedUserIds.Concat(note.VisibleUserIds).Distinct().ToList();
}
note.Text = mentionsResolver.ResolveMentions(text, note.UserHost, mentions, splitDomainMapping);
}
//TODO: handle updated alt text et al
note.FileIds = attachments?.Select(p => p.Id).ToList() ?? [];
note.AttachedFileTypes = attachments?.Select(p => p.Type).ToList() ?? [];
note.UpdatedAt = DateTime.UtcNow;
if (poll != null)
{
if (note.Poll != null)
{
if (note.Poll.ExpiresAt != poll.ExpiresAt)
{
note.Poll.ExpiresAt = poll.ExpiresAt;
await EnqueuePollExpiryTask(note.Poll);
}
if (!note.Poll.Choices.SequenceEqual(poll.Choices) || note.Poll.Multiple != poll.Multiple)
{
await db.PollVotes.Where(p => p.Note == note).ExecuteDeleteAsync();
note.Poll.Choices = poll.Choices;
note.Poll.Votes = poll.Choices.Select(_ => 0).ToList();
note.Poll.Multiple = poll.Multiple;
db.Update(note.Poll);
}
}
else
{
poll.Note = note;
poll.UserId = note.User.Id;
poll.UserHost = note.UserHost;
poll.Votes = poll.Choices.Select(_ => 0).ToList();
poll.NoteVisibility = note.Visibility;
await db.AddAsync(poll);
await EnqueuePollExpiryTask(poll);
}
note.HasPoll = true;
}
db.Update(note);
await db.AddAsync(noteEdit);
await db.SaveChangesAsync();
await notificationSvc.GenerateMentionNotifications(note, mentionedLocalUserIds);
await notificationSvc.GenerateReplyNotifications(note, mentionedLocalUserIds);
await notificationSvc.GenerateEditNotifications(note);
eventSvc.RaiseNoteUpdated(this, note);
if (note.LocalOnly) return note;
var actor = userRenderer.RenderLite(note.User);
var obj = await noteRenderer.RenderAsync(note, mentions);
var activity = ActivityPub.ActivityRenderer.RenderUpdate(obj, actor);
var recipients = await db.Users.Where(p => mentionedUserIds.Contains(p.Id))
.Select(p => new User { Id = p.Id })
.ToListAsync();
if (note.Visibility == Note.NoteVisibility.Specified)
await deliverSvc.DeliverToAsync(activity, note.User, recipients.ToArray());
else
await deliverSvc.DeliverToFollowersAsync(activity, note.User, recipients);
return note;
}
public async Task DeleteNoteAsync(Note note)
{
db.Update(note.User);
db.Remove(note);
eventSvc.RaiseNoteDeleted(this, note);
await db.SaveChangesAsync();
await UpdateNoteCountersAsync(note, false);
if (note.UserHost != null)
{
if (note.User.Uri != null)
{
_ = followupTaskSvc.ExecuteTask("UpdateInstanceNoteCounter", async provider =>
{
var bgDb = provider.GetRequiredService<DatabaseContext>();
var bgInstanceSvc = provider.GetRequiredService<InstanceService>();
var dbInstance = await bgInstanceSvc.GetUpdatedInstanceMetadataAsync(note.User);
await bgDb.Instances.Where(p => p.Id == dbInstance.Id)
.ExecuteUpdateAsync(p => p.SetProperty(i => i.NotesCount, i => i.NotesCount - 1));
});
}
return;
}
var recipients = await db.Users.Where(p => note.Mentions.Concat(note.VisibleUserIds).Distinct().Contains(p.Id))
.Select(p => new User { Id = p.Id })
.ToListAsync();
var actor = userRenderer.RenderLite(note.User);
ASActivity activity = note.IsPureRenote
? activityRenderer.RenderUndo(actor,
ActivityPub.ActivityRenderer
.RenderAnnounce(noteRenderer.RenderLite(note.Renote ?? throw new Exception("Refusing to undo renote without renote")),
note.GetPublicUri(config.Value), actor,
note.Visibility,
note.User.GetPublicUri(config.Value) +
"/followers"))
: activityRenderer.RenderDelete(actor, new ASTombstone { Id = note.GetPublicUri(config.Value) });
if (note.Visibility == Note.NoteVisibility.Specified)
await deliverSvc.DeliverToAsync(activity, note.User, recipients.ToArray());
else
await deliverSvc.DeliverToFollowersAsync(activity, note.User, recipients);
}
public async Task DeleteNoteAsync(ASTombstone note, User actor)
{
// ReSharper disable once EntityFramework.NPlusOne.IncompleteDataQuery (it doesn't know about IncludeCommonProperties())
var dbNote = await db.Notes.IncludeCommonProperties().FirstOrDefaultAsync(p => p.Uri == note.Id);
if (dbNote == null)
{
logger.LogDebug("Note '{id}' isn't known, skipping", note.Id);
return;
}
// ReSharper disable once EntityFramework.NPlusOne.IncompleteDataUsage (same reason as above)
if (dbNote.User != actor)
{
logger.LogDebug("Note '{id}' isn't owned by actor requesting its deletion, skipping", note.Id);
return;
}
logger.LogDebug("Deleting note '{id}' owned by {userId}", note.Id, actor.Id);
db.Remove(dbNote);
eventSvc.RaiseNoteDeleted(this, dbNote);
await db.SaveChangesAsync();
await UpdateNoteCountersAsync(dbNote, false);
// ReSharper disable once EntityFramework.NPlusOne.IncompleteDataUsage (same reason as above)
if (dbNote.User.Uri != null && dbNote.UserHost != null)
{
_ = followupTaskSvc.ExecuteTask("UpdateInstanceNoteCounter", async provider =>
{
var bgDb = provider.GetRequiredService<DatabaseContext>();
var bgInstanceSvc = provider.GetRequiredService<InstanceService>();
// ReSharper disable once EntityFramework.NPlusOne.IncompleteDataUsage (same reason as above)
var dbInstance = await bgInstanceSvc.GetUpdatedInstanceMetadataAsync(dbNote.User);
await bgDb.Instances.Where(p => p.Id == dbInstance.Id)
.ExecuteUpdateAsync(p => p.SetProperty(i => i.NotesCount, i => i.NotesCount - 1));
});
}
}
public async Task UndoAnnounceAsync(ASNote note, User actor)
{
var renote = await ResolveNoteAsync(note);
if (renote == null) return;
var notes = await db.Notes.IncludeCommonProperties()
.Where(p => p.Renote == renote && p.User == actor && p.IsPureRenote)
.ToListAsync();
if (notes.Count == 0) return;
db.RemoveRange(notes);
await db.SaveChangesAsync();
await db.Notes.Where(p => p.Id == note.Id)
.ExecuteUpdateAsync(p => p.SetProperty(n => n.RenoteCount, n => n.RenoteCount - 1));
foreach (var hit in notes)
eventSvc.RaiseNoteDeleted(this, hit);
}
public async Task<Note?> ProcessNoteAsync(ASNote note, User actor, User? user = null)
{
var dbHit = await db.Notes.IncludeCommonProperties().FirstOrDefaultAsync(p => p.Uri == note.Id);
if (dbHit != null)
{
logger.LogDebug("Note '{id}' already exists, skipping", note.Id);
return dbHit;
}
if (_resolverHistory is [])
_resolverHistory.Add(note.Id);
logger.LogDebug("Creating note: {id}", note.Id);
// Validate note
if (note.AttributedTo is not { Count: 1 } || note.AttributedTo[0].Id != actor.Uri)
throw GracefulException.UnprocessableEntity("User.Uri doesn't match Note.AttributedTo");
if (actor.Uri == null)
throw GracefulException.UnprocessableEntity("User.Uri is null");
if (actor.Host == null)
throw GracefulException.UnprocessableEntity("User.Host is null");
if (new Uri(note.Id).IdnHost != new Uri(actor.Uri).IdnHost)
throw GracefulException.UnprocessableEntity("User.Uri host doesn't match Note.Id host");
if (!note.Id.StartsWith("https://"))
throw GracefulException.UnprocessableEntity("Note.Id schema is invalid");
if (note.Url?.Link != null && !note.Url.Link.StartsWith("https://"))
throw GracefulException.UnprocessableEntity("Note.Url schema is invalid");
if (actor.IsSuspended)
throw GracefulException.Forbidden("User is suspended");
var reply = note.InReplyTo?.Id != null ? await ResolveNoteAsync(note.InReplyTo.Id, user: user) : null;
if (reply is { HasPoll: true } && note.Name != null)
{
if (reply.UserHost != null)
throw GracefulException.UnprocessableEntity("Poll vote not destined for this instance");
var poll = await db.Polls.FirstOrDefaultAsync(p => p.Note == reply) ??
throw GracefulException.UnprocessableEntity("Poll does not exist");
if (poll.Choices.All(p => p != note.Name))
throw GracefulException.UnprocessableEntity("Unknown poll option");
var existingVotes = await db.PollVotes.Where(p => p.User == actor && p.Note == reply).ToListAsync();
if (existingVotes.Any(p => poll.Choices[p.Choice] == note.Name))
throw GracefulException.UnprocessableEntity("Actor has already voted for this option");
if (!poll.Multiple && existingVotes.Count != 0)
throw GracefulException.UnprocessableEntity("Actor has already voted in this poll");
var vote = new PollVote
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
User = actor,
Note = reply,
Choice = poll.Choices.IndexOf(note.Name)
};
await db.AddAsync(vote);
await db.SaveChangesAsync();
await pollSvc.RegisterPollVote(vote, poll, reply);
return null;
}
if (note.PublishedAt is null or { Year: < 2007 } || note.PublishedAt > DateTime.Now + TimeSpan.FromDays(3))
throw GracefulException.UnprocessableEntity("Note.PublishedAt is nonsensical");
var (mentionedUserIds, mentionedLocalUserIds, mentions, remoteMentions, splitDomainMapping) =
await ResolveNoteMentionsAsync(note);
var createdAt = note.PublishedAt?.ToUniversalTime() ??
throw GracefulException.UnprocessableEntity("Missing or invalid PublishedAt field");
var quoteUrl = note.MkQuote ?? note.QuoteUri ?? note.QuoteUrl;
var dbNote = new Note
{
Id = IdHelpers.GenerateSlowflakeId(createdAt),
Uri = note.Id,
Url = note.Url?.Id, //FIXME: this doesn't seem to work yet
Text = note.MkContent ?? await MfmConverter.FromHtmlAsync(note.Content, mentions),
Cw = note.Summary,
User = actor,
CreatedAt = createdAt,
UserHost = actor.Host,
Visibility = note.GetVisibility(actor),
Reply = reply,
Renote = quoteUrl != null ? await ResolveNoteAsync(quoteUrl, user: user) : null
};
if (dbNote.Renote?.IsPureRenote ?? false)
throw GracefulException.UnprocessableEntity("Cannot renote or quote a pure renote");
if (dbNote.Reply?.IsPureRenote ?? false)
throw GracefulException.UnprocessableEntity("Cannot reply to a pure renote");
if (dbNote.Renote != null && dbNote.Renote.User != user)
{
if (await db.Blockings.AnyAsync(p => p.Blockee == user && p.Blocker == dbNote.Renote.User))
throw GracefulException.Forbidden("You are not allowed to interact with this user");
}
if (note is ASQuestion question)
{
if (question is { AnyOf: not null, OneOf: not null })
throw GracefulException.UnprocessableEntity("Polls cannot have both anyOf and oneOf set");
var choices = (question.AnyOf ?? question.OneOf)?.Where(p => p.Name != null).ToList() ??
throw GracefulException.UnprocessableEntity("Polls must have either anyOf or oneOf set");
if (choices.Count == 0)
throw GracefulException.UnprocessableEntity("Poll must have at least one option");
var poll = new Poll
{
Note = dbNote,
UserId = dbNote.User.Id,
UserHost = dbNote.UserHost,
ExpiresAt = question.EndTime ?? question.Closed,
Multiple = question.AnyOf != null,
Choices = choices.Select(p => p.Name).Cast<string>().ToList(),
NoteVisibility = dbNote.Visibility,
Votes = choices.Select(p => (int?)p.Replies?.TotalItems ?? 0).ToList()
};
await db.AddAsync(poll);
dbNote.HasPoll = true;
await EnqueuePollExpiryTask(poll);
}
if (dbNote.Reply != null)
{
dbNote.ReplyUserId = dbNote.Reply.UserId;
dbNote.ReplyUserHost = dbNote.Reply.UserHost;
dbNote.ThreadId = dbNote.Reply.ThreadId ?? dbNote.Reply.Id;
}
if (dbNote.Renote != null)
{
dbNote.RenoteUserId = dbNote.Renote.UserId;
dbNote.RenoteUserHost = dbNote.Renote.UserHost;
}
if (dbNote.Text is { Length: > 100000 })
throw GracefulException.UnprocessableEntity("Content cannot be longer than 100.000 characters");
if (dbNote.Cw is { Length: > 100000 })
throw GracefulException.UnprocessableEntity("Summary cannot be longer than 100.000 characters");
if (dbNote.Text is not null)
{
dbNote.Mentions = mentionedUserIds;
dbNote.MentionedRemoteUsers = remoteMentions;
if (dbNote.Visibility == Note.NoteVisibility.Specified)
{
var visibleUserIds = (await note.GetRecipients(actor)
.Select(userResolver.ResolveAsync)
.AwaitAllNoConcurrencyAsync())
.Select(p => p.Id)
.Concat(mentionedUserIds)
.ToList();
if (dbNote.ReplyUserId != null)
visibleUserIds.Add(dbNote.ReplyUserId);
dbNote.VisibleUserIds = visibleUserIds.Distinct().ToList();
}
dbNote.Text = mentionsResolver.ResolveMentions(dbNote.Text, dbNote.UserHost, mentions, splitDomainMapping);
dbNote.Tags = ResolveHashtags(dbNote.Text, note);
}
var sensitive = (note.Sensitive ?? false) || dbNote.Cw != null;
var files = await ProcessAttachmentsAsync(note.Attachments, actor, sensitive);
if (files.Count != 0)
{
dbNote.FileIds = files.Select(p => p.Id).ToList();
dbNote.AttachedFileTypes = files.Select(p => p.Type).ToList();
}
var emoji = await emojiSvc.ProcessEmojiAsync(note.Tags?.OfType<ASEmoji>().ToList(), actor.Host);
dbNote.Emojis = emoji.Select(p => p.Id).ToList();
await UpdateNoteCountersAsync(dbNote, true);
await db.Notes.AddAsync(dbNote);
await db.SaveChangesAsync();
eventSvc.RaiseNotePublished(this, dbNote);
await notificationSvc.GenerateMentionNotifications(dbNote, mentionedLocalUserIds);
await notificationSvc.GenerateReplyNotifications(dbNote, mentionedLocalUserIds);
await notificationSvc.GenerateRenoteNotification(dbNote);
logger.LogDebug("Note {id} created successfully", dbNote.Id);
return dbNote;
}
[SuppressMessage("ReSharper", "EntityFramework.NPlusOne.IncompleteDataUsage",
Justification = "Inspection doesn't understand IncludeCommonProperties()")]
[SuppressMessage("ReSharper", "EntityFramework.NPlusOne.IncompleteDataQuery", Justification = "See above")]
public async Task<Note?> ProcessNoteUpdateAsync(ASNote note, User actor)
{
var dbNote = await db.Notes.IncludeCommonProperties()
.Include(p => p.Poll)
.FirstOrDefaultAsync(p => p.Uri == note.Id);
if (dbNote == null) return await ProcessNoteAsync(note, actor);
if (dbNote.User != actor)
throw GracefulException.UnprocessableEntity("Refusing to update note of user other than actor");
if (dbNote.User.IsSuspended)
throw GracefulException.Forbidden("User is suspended");
if (dbNote.UpdatedAt != null && dbNote.UpdatedAt > (note.UpdatedAt ?? DateTime.UtcNow))
throw GracefulException.UnprocessableEntity("Note update is older than last known version");
var noteEdit = new NoteEdit
{
Id = IdHelpers.GenerateSlowflakeId(),
UpdatedAt = note.UpdatedAt ?? DateTime.UtcNow,
Note = dbNote,
Text = dbNote.Text,
Cw = dbNote.Cw,
FileIds = dbNote.FileIds
};
var previousMentionedLocalUserIds = await db.Users.Where(p => dbNote.Mentions.Contains(p.Id) && p.Host == null)
.Select(p => p.Id)
.ToListAsync();
var (mentionedUserIds, mentionedLocalUserIds, mentions, remoteMentions, splitDomainMapping) =
await ResolveNoteMentionsAsync(note);
mentionedLocalUserIds = mentionedLocalUserIds.Except(previousMentionedLocalUserIds).ToList();
dbNote.Text = note.MkContent ?? await MfmConverter.FromHtmlAsync(note.Content, mentions);
dbNote.Cw = note.Summary;
if (dbNote.Cw is { Length: > 100000 })
throw GracefulException.UnprocessableEntity("Summary cannot be longer than 100.000 characters");
if (dbNote.Text is { Length: > 100000 })
throw GracefulException.UnprocessableEntity("Content cannot be longer than 100.000 characters");
if (dbNote.Text is not null)
{
if (!dbNote.Mentions.SequenceEqual(mentionedUserIds))
dbNote.Mentions = mentionedUserIds;
if (!dbNote.MentionedRemoteUsers.SequenceEqual(remoteMentions))
dbNote.MentionedRemoteUsers = remoteMentions;
if (dbNote.Visibility == Note.NoteVisibility.Specified)
{
var visibleUserIds = (await note.GetRecipients(actor)
.Select(userResolver.ResolveAsync)
.AwaitAllNoConcurrencyAsync())
.Select(p => p.Id)
.Concat(mentionedUserIds)
.ToList();
if (dbNote.ReplyUserId != null)
visibleUserIds.Add(dbNote.ReplyUserId);
// We want to make sure not to revoke visibility
var missing = visibleUserIds.Except(dbNote.VisibleUserIds).ToList();
if (missing.Count != 0)
dbNote.VisibleUserIds.AddRange(missing);
}
dbNote.Text = mentionsResolver.ResolveMentions(dbNote.Text, dbNote.UserHost, mentions, splitDomainMapping);
dbNote.Tags = ResolveHashtags(dbNote.Text, note);
}
var isPollEdited = false;
if (note is ASQuestion question)
{
if (question is { AnyOf: not null, OneOf: not null })
throw GracefulException.UnprocessableEntity("Polls cannot have both anyOf and oneOf set");
var choices = (question.AnyOf ?? question.OneOf)?.Where(p => p.Name != null).ToList() ??
throw GracefulException.UnprocessableEntity("Polls must have either anyOf or oneOf set");
if (choices.Count == 0)
throw GracefulException.UnprocessableEntity("Poll must have at least one option");
if (dbNote.Poll != null)
{
if (dbNote.Poll.ExpiresAt != (question.EndTime ?? question.Closed))
{
dbNote.Poll.ExpiresAt = question.EndTime ?? question.Closed;
if (dbNote.Poll.ExpiresAt != null)
await EnqueuePollExpiryTask(dbNote.Poll);
}
if (!dbNote.Poll.Choices.SequenceEqual(choices.Select(p => p.Name)) ||
dbNote.Poll.Multiple != (question.AnyOf != null))
{
isPollEdited = true;
await db.PollVotes.Where(p => p.Note == dbNote).ExecuteDeleteAsync();
dbNote.Poll.Choices = choices.Select(p => p.Name).Cast<string>().ToList();
dbNote.Poll.Votes = choices.Select(p => (int?)p.Replies?.TotalItems ?? 0).ToList();
dbNote.Poll.Multiple = question.AnyOf != null;
db.Update(dbNote.Poll);
}
else
{
dbNote.Poll.Votes = choices.Select(p => (int?)p.Replies?.TotalItems ?? 0).ToList();
db.Update(dbNote.Poll);
}
}
else
{
isPollEdited = true;
var poll = new Poll
{
Note = dbNote,
UserId = dbNote.User.Id,
UserHost = dbNote.UserHost,
ExpiresAt = question.EndTime ?? question.Closed,
Multiple = question.AnyOf != null,
Choices = choices.Select(p => p.Name).Cast<string>().ToList(),
NoteVisibility = dbNote.Visibility,
Votes = choices.Select(p => (int?)p.Replies?.TotalItems ?? 0).ToList()
};
await db.AddAsync(poll);
await EnqueuePollExpiryTask(poll);
}
dbNote.HasPoll = true;
}
else
{
if (dbNote.HasPoll)
{
dbNote.HasPoll = false;
}
if (dbNote.Poll != null)
{
db.Remove(dbNote.Poll);
dbNote.Poll = null;
}
}
//TODO: handle updated alt text et al
var sensitive = (note.Sensitive ?? false) || dbNote.Cw != null;
var files = await ProcessAttachmentsAsync(note.Attachments, actor, sensitive, false);
dbNote.FileIds = files.Select(p => p.Id).ToList();
dbNote.AttachedFileTypes = files.Select(p => p.Type).ToList();
if (note is not ASQuestion || isPollEdited || db.Entry(dbNote).State != EntityState.Unchanged)
{
dbNote.UpdatedAt = DateTime.UtcNow;
await db.AddAsync(noteEdit);
}
db.Update(dbNote);
await db.AddAsync(noteEdit);
await db.SaveChangesAsync();
await notificationSvc.GenerateMentionNotifications(dbNote, mentionedLocalUserIds);
await notificationSvc.GenerateReplyNotifications(dbNote, mentionedLocalUserIds);
await notificationSvc.GenerateEditNotifications(dbNote);
eventSvc.RaiseNoteUpdated(this, dbNote);
return dbNote;
}
private async Task<MentionQuintuple> ResolveNoteMentionsAsync(ASNote note)
{
var mentionTags = note.Tags?.OfType<ASMention>().Where(p => p.Href != null) ?? [];
var users = await mentionTags
.Select(async p =>
{
try
{
return await userResolver.ResolveAsync(p.Href!.Id!);
}
catch
{
return null;
}
})
.AwaitAllNoConcurrencyAsync();
return ResolveNoteMentions(users.Where(p => p != null).Select(p => p!).ToList());
}
private async Task<MentionQuintuple> ResolveNoteMentionsAsync(string? text)
{
var users = text != null
? await MfmParser.Parse(text)
.SelectMany(p => p.Children.Append(p))
.OfType<MfmMentionNode>()
.DistinctBy(p => p.Acct)
.Select(async p =>
{
try
{
return await userResolver.ResolveAsync(p.Acct);
}
catch
{
return null;
}
})
.AwaitAllNoConcurrencyAsync()
: [];
return ResolveNoteMentions(users.Where(p => p != null).Select(p => p!).ToList());
}
private List<string> ResolveHashtags(string? text, ASNote? note = null)
{
List<string> tags = [];
if (text != null)
{
tags = MfmParser.Parse(text)
.SelectMany(p => p.Children.Append(p))
.OfType<MfmHashtagNode>()
.Select(p => p.Hashtag.ToLowerInvariant())
.Select(p => p.Trim('#'))
.Distinct()
.ToList();
}
var extracted = note?.Tags?.OfType<ASHashtag>()
.Select(p => p.Name?.ToLowerInvariant())
.Where(p => p != null)
.Cast<string>()
.Select(p => p.Trim('#'))
.Distinct()
.ToList();
if (extracted != null)
tags.AddRange(extracted);
if (tags.Count == 0) return [];
tags = tags.Distinct().ToList();
_ = followupTaskSvc.ExecuteTask("UpdateHashtagsTable", async provider =>
{
var bgDb = provider.GetRequiredService<DatabaseContext>();
var existing = await bgDb.Hashtags.Where(p => tags.Contains(p.Name)).Select(p => p.Name).ToListAsync();
var dbTags = tags.Except(existing)
.Select(p => new Hashtag { Id = IdHelpers.GenerateSlowflakeId(), Name = p });
await bgDb.UpsertRange(dbTags).On(p => p.Name).NoUpdate().RunAsync();
});
return tags;
}
private MentionQuintuple ResolveNoteMentions(IReadOnlyCollection<User> users)
{
var userIds = users.Select(p => p.Id).Distinct().ToList();
var localUserIds = users.Where(p => p.Host == null).Select(p => p.Id).Distinct().ToList();
var remoteUsers = users.Where(p => p is { Host: not null, Uri: not null })
.ToList();
var localUsers = users.Where(p => p.Host is null)
.ToList();
var splitDomainMapping = remoteUsers.Where(p => new Uri(p.Uri!).Host != p.Host)
.DistinctBy(p => p.Host)
.ToDictionary(p => (p.UsernameLower, new Uri(p.Uri!).Host), p => p.Host!);
var localMentions = localUsers.Select(p => new Note.MentionedUser
{
Host = config.Value.AccountDomain,
Username = p.Username,
Uri = p.GetPublicUri(config.Value),
Url = $"https://{config.Value.WebDomain}/@{p.Username}"
});
var remoteMentions = remoteUsers.Select(p => new Note.MentionedUser
{
Host = p.Host!,
Uri = p.Uri!,
Username = p.Username,
Url = p.UserProfile?.Url
})
.ToList();
var mentions = remoteMentions.Concat(localMentions).ToList();
return (userIds, localUserIds, mentions, remoteMentions, splitDomainMapping);
}
private async Task<List<DriveFile>> ProcessAttachmentsAsync(
List<ASAttachment>? attachments, User user, bool sensitive, bool logExisting = true
)
{
if (attachments is not { Count: > 0 }) return [];
var result = await attachments
.OfType<ASDocument>()
.Take(10)
.Select(p => driveSvc.StoreFile(p.Url?.Id, user, p.Sensitive ?? sensitive, p.Description,
p.MediaType, logExisting))
.AwaitAllNoConcurrencyAsync();
return result.Where(p => p != null).Cast<DriveFile>().ToList();
}
public async Task<Note?> ResolveNoteAsync(
string uri, ASNote? fetchedNote = null, User? user = null, bool clearHistory = false
)
{
if (clearHistory)
{
_resolverHistory.Clear();
_recursionLimit = DefaultRecursionLimit;
}
//TODO: is this enough to prevent DoS attacks?
if (_recursionLimit-- <= 0)
throw GracefulException.UnprocessableEntity("Refusing to resolve threads this long");
if (_resolverHistory.Contains(uri))
throw GracefulException.UnprocessableEntity("Refusing to resolve circular threads");
_resolverHistory.Add(uri);
var note = uri.StartsWith($"https://{config.Value.WebDomain}/notes/")
? await db.Notes.IncludeCommonProperties()
.FirstOrDefaultAsync(p => p.Id ==
uri.Substring($"https://{config.Value.WebDomain}/notes/".Length))
: await db.Notes.IncludeCommonProperties()
.FirstOrDefaultAsync(p => p.Uri == uri);
if (note != null) return note;
fetchedNote ??= user != null ? await fetchSvc.FetchNoteAsync(uri, user) : await fetchSvc.FetchNoteAsync(uri);
if (fetchedNote == null)
{
logger.LogDebug("Failed to fetch note, skipping");
return null;
}
if (fetchedNote.AttributedTo is not [{ Id: not null } attrTo])
{
logger.LogDebug("Invalid Note.AttributedTo, skipping");
return null;
}
if (fetchedNote.Id != uri)
{
var res = await db.Notes.IncludeCommonProperties().FirstOrDefaultAsync(p => p.Uri == fetchedNote.Id);
if (res != null) return res;
}
var actor = await userResolver.ResolveAsync(attrTo.Id);
using (await KeyedLocker.LockAsync(uri))
{
try
{
return await ProcessNoteAsync(fetchedNote, actor, user);
}
catch (Exception e)
{
logger.LogDebug("Failed to create resolved note: {error}", e.Message);
return null;
}
}
}
public async Task<Note?> ResolveNoteAsync(ASNote note)
{
return await ResolveNoteAsync(note.Id, note);
}
public async Task<bool> LikeNoteAsync(Note note, User user)
{
if (note.IsPureRenote)
throw GracefulException.BadRequest("Cannot like a pure renote");
if (!await db.NoteLikes.AnyAsync(p => p.Note == note && p.User == user))
{
if (await db.Blockings.AnyAsync(p => p.Blockee == user && p.Blocker == note.User))
throw GracefulException.Forbidden("You are not allowed to interact with this user");
var like = new NoteLike
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
User = user,
Note = note
};
await db.NoteLikes.AddAsync(like);
await db.SaveChangesAsync();
await db.Notes.Where(p => p.Id == note.Id)
.ExecuteUpdateAsync(p => p.SetProperty(n => n.LikeCount, n => n.LikeCount + 1));
if (user.Host == null && note.UserHost != null)
{
var activity = activityRenderer.RenderLike(like);
await deliverSvc.DeliverToConditionalAsync(activity, user, note);
}
eventSvc.RaiseNoteLiked(this, note, user);
await notificationSvc.GenerateLikeNotification(note, user);
return true;
}
return false;
}
public async Task<bool> UnlikeNoteAsync(Note note, User user)
{
var like = await db.NoteLikes.Where(p => p.Note == note && p.User == user).FirstOrDefaultAsync();
if (like == null) return false;
db.Remove(like);
await db.SaveChangesAsync();
await db.Notes.Where(p => p.Id == note.Id)
.ExecuteUpdateAsync(p => p.SetProperty(n => n.LikeCount, n => n.LikeCount - 1));
if (user.Host == null && note.UserHost != null)
{
var activity =
activityRenderer.RenderUndo(userRenderer.RenderLite(user), activityRenderer.RenderLike(like));
await deliverSvc.DeliverToConditionalAsync(activity, user, note);
}
eventSvc.RaiseNoteUnliked(this, note, user);
await db.Notifications
.Where(p => p.Type == Notification.NotificationType.Like &&
p.Notifiee == note.User &&
p.Notifier == user)
.ExecuteDeleteAsync();
return true;
}
public async Task<Note> LikeNoteAsync(ASNote note, User actor)
{
var dbNote = await ResolveNoteAsync(note) ?? throw new Exception("Cannot register like for unknown note");
await LikeNoteAsync(dbNote, actor);
return dbNote;
}
public async Task<Note> UnlikeNoteAsync(ASNote note, User user)
{
var dbNote = await ResolveNoteAsync(note) ?? throw new Exception("Cannot unregister like for unknown note");
await UnlikeNoteAsync(dbNote, user);
return dbNote;
}
public async Task BookmarkNoteAsync(Note note, User user)
{
if (user.Host != null) throw new Exception("This method is only valid for local users");
if (note.IsPureRenote)
throw GracefulException.BadRequest("Cannot bookmark a pure renote");
if (!await db.NoteBookmarks.AnyAsync(p => p.Note == note && p.User == user))
{
var bookmark = new NoteBookmark
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
User = user,
Note = note
};
await db.NoteBookmarks.AddAsync(bookmark);
await db.SaveChangesAsync();
}
}
public async Task UnbookmarkNoteAsync(Note note, User user)
{
if (user.Host != null) throw new Exception("This method is only valid for local users");
await db.NoteBookmarks.Where(p => p.Note == note && p.User == user).ExecuteDeleteAsync();
}
public async Task PinNoteAsync(Note note, User user)
{
if (user.Host != null) throw new Exception("This method is only valid for local users");
if (note.IsPureRenote)
throw GracefulException.BadRequest("Cannot pin a pure renote");
if (note.User != user)
throw GracefulException.UnprocessableEntity("Validation failed: Someone else's post cannot be pinned");
if (!await db.UserNotePins.AnyAsync(p => p.Note == note && p.User == user))
{
if (await db.UserNotePins.CountAsync(p => p.User == user) > 10)
throw GracefulException.UnprocessableEntity("You cannot pin more than 10 notes at once.");
var pin = new UserNotePin
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
User = user,
Note = note
};
await db.UserNotePins.AddAsync(pin);
await db.SaveChangesAsync();
var activity = activityRenderer.RenderUpdate(await userRenderer.RenderAsync(user));
await deliverSvc.DeliverToFollowersAsync(activity, user, []);
}
}
public async Task UnpinNoteAsync(Note note, User user)
{
if (user.Host != null) throw new Exception("This method is only valid for local users");
var count = await db.UserNotePins.Where(p => p.Note == note && p.User == user).ExecuteDeleteAsync();
if (count == 0) return;
var activity = activityRenderer.RenderUpdate(await userRenderer.RenderAsync(user));
await deliverSvc.DeliverToFollowersAsync(activity, user, []);
}
public async Task UpdatePinnedNotesAsync(ASActor actor, User user)
{
logger.LogDebug("Updating pinned notes for user {user}", user.Id);
var collection = actor.Featured;
if (collection == null) return;
if (collection.IsUnresolved)
collection = await objectResolver.ResolveObject(collection, force: true) as ASOrderedCollection;
if (collection is not { Items: not null }) return;
var items = await collection.Items.Take(10)
.Select(p => objectResolver.ResolveObject(p))
.AwaitAllNoConcurrencyAsync();
var notes = await items.OfType<ASNote>()
.Select(p => ResolveNoteAsync(p.Id, p, null, true))
.AwaitAllNoConcurrencyAsync();
var previousPins = await db.Users.Where(p => p.Id == user.Id)
.Select(p => p.PinnedNotes.Select(i => i.Id))
.FirstOrDefaultAsync() ?? [];
if (previousPins.SequenceEqual(notes.Where(p => p != null).Cast<Note>().Select(p => p.Id))) return;
var pins = notes.Where(p => p != null)
.Cast<Note>()
.Select(p => new UserNotePin
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
Note = p,
User = user
});
db.RemoveRange(await db.UserNotePins.Where(p => p.User == user).ToListAsync());
await db.AddRangeAsync(pins);
await db.SaveChangesAsync();
}
private async Task EnqueuePollExpiryTask(Poll poll)
{
if (!poll.ExpiresAt.HasValue) return;
var job = new PollExpiryJobData { NoteId = poll.Note.Id };
await queueSvc.BackgroundTaskQueue.ScheduleAsync(job, poll.ExpiresAt.Value);
}
public async Task<(string name, bool success)> ReactToNoteAsync(Note note, User user, string name)
{
if (note.IsPureRenote)
throw GracefulException.BadRequest("Cannot react to a pure renote");
name = await emojiSvc.ResolveEmojiName(name, user.Host);
if (await db.NoteReactions.AnyAsync(p => p.Note == note && p.User == user && p.Reaction == name))
return (name, false);
if (await db.Blockings.AnyAsync(p => p.Blockee == user && p.Blocker == note.User))
throw GracefulException.Forbidden("You are not allowed to interact with this user");
var reaction = new NoteReaction
{
Id = IdHelpers.GenerateSlowflakeId(),
CreatedAt = DateTime.UtcNow,
Note = note,
User = user,
Reaction = name
};
await db.AddAsync(reaction);
await db.SaveChangesAsync();
eventSvc.RaiseNoteReacted(this, reaction);
await notificationSvc.GenerateReactionNotification(reaction);
await db.Database
.ExecuteSqlAsync($"""UPDATE "note" SET "reactions" = jsonb_set("reactions", ARRAY[{name}], (COALESCE("reactions"->>{name}, '0')::int + 1)::text::jsonb) WHERE "id" = {note.Id}""");
if (user.Host == null)
{
var emoji = await emojiSvc.ResolveEmoji(reaction.Reaction);
var activity = activityRenderer.RenderReact(reaction, emoji);
await deliverSvc.DeliverToConditionalAsync(activity, user, note);
}
return (name, true);
}
public async Task ReactToNoteAsync(ASNote note, User actor, string name)
{
var dbNote = await ResolveNoteAsync(note.Id, note.VerifiedFetch ? note : null);
if (dbNote == null)
throw GracefulException.UnprocessableEntity("Failed to resolve reaction target");
await ReactToNoteAsync(dbNote, actor, name);
}
public async Task<(string name, bool success)> RemoveReactionFromNoteAsync(Note note, User user, string name)
{
name = await emojiSvc.ResolveEmojiName(name, user.Host);
var reaction =
await db.NoteReactions.FirstOrDefaultAsync(p => p.Note == note && p.User == user && p.Reaction == name);
if (reaction == null) return (name, false);
db.Remove(reaction);
await db.SaveChangesAsync();
eventSvc.RaiseNoteUnreacted(this, reaction);
await db.Database
.ExecuteSqlAsync($"""UPDATE "note" SET "reactions" = jsonb_set("reactions", ARRAY[{name}], (COALESCE("reactions"->>{name}, '1')::int - 1)::text::jsonb) WHERE "id" = {note.Id}""");
if (user.Host == null)
{
var actor = userRenderer.RenderLite(user);
var emoji = await emojiSvc.ResolveEmoji(reaction.Reaction);
var activity = activityRenderer.RenderUndo(actor, activityRenderer.RenderReact(reaction, emoji));
await deliverSvc.DeliverToConditionalAsync(activity, user, note);
}
if (note.User.Host == null && note.User != user)
{
await db.Notifications
.Where(p => p.Note == note &&
p.Notifier == user &&
p.Type == Notification.NotificationType.Reaction)
.ExecuteDeleteAsync();
}
return (name, true);
}
public async Task RemoveReactionFromNoteAsync(ASNote note, User actor, string name)
{
var dbNote = await ResolveNoteAsync(note.Id, note.VerifiedFetch ? note : null);
if (dbNote == null) return;
await RemoveReactionFromNoteAsync(dbNote, actor, name);
}
}