Merge pull request #578 from ThibG/glitch-soc/merge-upstream

Merge upstream changes

40 files changed, 326 insertions, 30 deletions

diff --git a/app/controllers/admin/relays_controller.rb b/app/controllers/admin/relays_controller.rb
new file mode 100644
index 000000000..1b02d3c36
--- /dev/null
+++ b/app/controllers/admin/relays_controller.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module Admin
+  class RelaysController < BaseController
+    before_action :set_relay, except: [:index, :new, :create]
+
+    def index
+      authorize :relay, :update?
+      @relays = Relay.all
+    end
+
+    def new
+      authorize :relay, :update?
+      @relay = Relay.new(inbox_url: Relay::PRESET_RELAY)
+    end
+
+    def create
+      authorize :relay, :update?
+
+      @relay = Relay.new(resource_params)
+
+      if @relay.save
+        @relay.enable!
+        redirect_to admin_relays_path
+      else
+        render action: :new
+      end
+    end
+
+    def destroy
+      authorize :relay, :update?
+      @relay.destroy
+      redirect_to admin_relays_path
+    end
+
+    def enable
+      authorize :relay, :update?
+      @relay.enable!
+      redirect_to admin_relays_path
+    end
+
+    def disable
+      authorize :relay, :update?
+      @relay.disable!
+      redirect_to admin_relays_path
+    end
+
+    private
+
+    def set_relay
+      @relay = Relay.find(params[:id])
+    end
+
+    def resource_params
+      params.require(:relay).permit(:inbox_url)
+    end
+  end
+end
diff --git a/app/helpers/stream_entries_helper.rb b/app/helpers/stream_entries_helper.rb
index a91a28935..05cea73d7 100644
--- a/app/helpers/stream_entries_helper.rb
+++ b/app/helpers/stream_entries_helper.rb
@@ -67,7 +67,7 @@ module StreamEntriesHelper
   end
 
   def acct(account)
-    if embedded_view? && account.local?
+    if account.local?
       "@#{account.acct}@#{Rails.configuration.x.local_domain}"
     else
       "@#{account.acct}"
diff --git a/app/javascript/core/admin.js b/app/javascript/core/admin.js
index 28f27fbc6..3302454ab 100644
--- a/app/javascript/core/admin.js
+++ b/app/javascript/core/admin.js
@@ -1,6 +1,9 @@
 //  This file will be loaded on admin pages, regardless of theme.
 
 import { delegate } from 'rails-ujs';
+import { start } from '../mastodon/common';
+
+start();
 
 function handleDeleteStatus(event) {
   const [data] = event.detail;
diff --git a/app/javascript/core/common.js b/app/javascript/core/common.js
index a7073ef0e..3b038ca40 100644
--- a/app/javascript/core/common.js
+++ b/app/javascript/core/common.js
@@ -1,8 +1,5 @@
 //  This file will be loaded on all pages, regardless of theme.
 
-import { start } from 'rails-ujs';
 import 'font-awesome/css/font-awesome.css';
 
 require.context('../images/', true);
-
-start();
diff --git a/app/javascript/flavours/glitch/packs/common.js b/app/javascript/flavours/glitch/packs/common.js
index 8dd4372bc..94a4e6ee4 100644
--- a/app/javascript/flavours/glitch/packs/common.js
+++ b/app/javascript/flavours/glitch/packs/common.js
@@ -1,3 +1,7 @@
+import { start } from 'rails-ujs';
+
+start();
+
 import 'flavours/glitch/styles/index.scss';
 
 //  This ensures that webpack compiles our images.
diff --git a/app/javascript/mastodon/actions/domain_blocks.js b/app/javascript/mastodon/actions/domain_blocks.js
index 47e2df76b..0445a5e10 100644
--- a/app/javascript/mastodon/actions/domain_blocks.js
+++ b/app/javascript/mastodon/actions/domain_blocks.js
@@ -128,7 +128,7 @@ export function expandDomainBlocks() {
   return (dispatch, getState) => {
     const url = getState().getIn(['domain_lists', 'blocks', 'next']);
 
-    if (url === null) {
+    if (!url) {
       return;
     }
 
diff --git a/app/javascript/mastodon/common.js b/app/javascript/mastodon/common.js
new file mode 100644
index 000000000..2b10b8c30
--- /dev/null
+++ b/app/javascript/mastodon/common.js
@@ -0,0 +1,8 @@
+import Rails from 'rails-ujs';
+
+export function start() {
+  require('font-awesome/css/font-awesome.css');
+  require.context('../images/', true);
+
+  Rails.start();
+};
diff --git a/app/javascript/mastodon/features/getting_started/index.js b/app/javascript/mastodon/features/getting_started/index.js
index 99642c911..074ab01c8 100644
--- a/app/javascript/mastodon/features/getting_started/index.js
+++ b/app/javascript/mastodon/features/getting_started/index.js
@@ -7,7 +7,7 @@ import { connect } from 'react-redux';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import ImmutablePureComponent from 'react-immutable-pure-component';
-import { me, invitesEnabled } from '../../initial_state';
+import { me, invitesEnabled, version } from '../../initial_state';
 import { fetchFollowRequests } from '../../actions/accounts';
 import { List as ImmutableList } from 'immutable';
 import { Link } from 'react-router-dom';
@@ -149,7 +149,7 @@ export default class GettingStarted extends ImmutablePureComponent {
             <FormattedMessage
               id='getting_started.open_source_notice'
               defaultMessage='Mastodon is open source software. You can contribute or report issues on GitHub at {github}.'
-              values={{ github: <a href='https://github.com/tootsuite/mastodon' rel='noopener' target='_blank'>tootsuite/mastodon</a> }}
+              values={{ github: <span><a href='https://github.com/tootsuite/mastodon' rel='noopener' target='_blank'>tootsuite/mastodon</a> (v{version})</span> }}
             />
           </p>
         </div>
diff --git a/app/javascript/mastodon/features/ui/components/image_loader.js b/app/javascript/mastodon/features/ui/components/image_loader.js
index c7360a726..5e1cf75af 100644
--- a/app/javascript/mastodon/features/ui/components/image_loader.js
+++ b/app/javascript/mastodon/features/ui/components/image_loader.js
@@ -1,6 +1,7 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
+import { LoadingBar } from 'react-redux-loading-bar';
 import ZoomableImage from './zoomable_image';
 
 export default class ImageLoader extends React.PureComponent {
@@ -23,6 +24,7 @@ export default class ImageLoader extends React.PureComponent {
   state = {
     loading: true,
     error: false,
+    width: null,
   }
 
   removers = [];
@@ -122,6 +124,7 @@ export default class ImageLoader extends React.PureComponent {
 
   setCanvasRef = c => {
     this.canvas = c;
+    if (c) this.setState({ width: c.offsetWidth });
   }
 
   render () {
@@ -135,6 +138,7 @@ export default class ImageLoader extends React.PureComponent {
 
     return (
       <div className={className}>
+        <LoadingBar loading={loading ? 1 : 0} className='loading-bar' style={{ width: this.state.width || width }} />
         {loading ? (
           <canvas
             className='image-loader__preview-canvas'
diff --git a/app/javascript/mastodon/initial_state.js b/app/javascript/mastodon/initial_state.js
index 1d23e34b1..8751a5636 100644
--- a/app/javascript/mastodon/initial_state.js
+++ b/app/javascript/mastodon/initial_state.js
@@ -13,5 +13,6 @@ export const me = getMeta('me');
 export const searchEnabled = getMeta('search_enabled');
 export const maxChars = getMeta('max_toot_chars') || 500;
 export const invitesEnabled = getMeta('invites_enabled');
+export const version = getMeta('version');
 
 export default initialState;
diff --git a/app/javascript/mastodon/locales/cs.json b/app/javascript/mastodon/locales/cs.json
index 59d7c403b..747d09798 100644
--- a/app/javascript/mastodon/locales/cs.json
+++ b/app/javascript/mastodon/locales/cs.json
@@ -6,10 +6,10 @@
   "account.direct": "Direct message @{name}",
   "account.disclaimer_full": "Information below may reflect the user's profile incompletely.",
   "account.domain_blocked": "Domain hidden",
-  "account.edit_profile": "Edit profile",
-  "account.follow": "Follow",
-  "account.followers": "Followers",
-  "account.follows": "Follows",
+  "account.edit_profile": "Uprav profil",
+  "account.follow": "Sleduj",
+  "account.followers": "Sledovatelé",
+  "account.follows": "Sleduje",
   "account.follows_you": "Follows you",
   "account.hide_reblogs": "Hide boosts from @{name}",
   "account.media": "Media",
diff --git a/app/javascript/mastodon/locales/el.json b/app/javascript/mastodon/locales/el.json
index 7e8fa8b17..a34d7061d 100644
--- a/app/javascript/mastodon/locales/el.json
+++ b/app/javascript/mastodon/locales/el.json
@@ -65,7 +65,7 @@
   "compose_form.hashtag_warning": "Αυτό το τουτ δεν θα εμφανίζεται κάτω από κανένα hashtag καθώς είναι αφανές. Μόνο τα δημόσια τουτ μπορούν να αναζητηθούν ανά hashtag.",
   "compose_form.lock_disclaimer": "Ο λογαριασμός σου δεν είναι {locked}. Οποιοσδήποτε μπορεί να σε ακολουθήσει για να δει τις δημοσιεύσεις σας προς τους ακολούθους σας.",
   "compose_form.lock_disclaimer.lock": "κλειδωμένος",
-  "compose_form.placeholder": "Τι έχεις στο μυαλό σου;",
+  "compose_form.placeholder": "Τι σκέφτεσαι;",
   "compose_form.publish": "Τουτ",
   "compose_form.publish_loud": "{publish}!",
   "compose_form.sensitive.marked": "Το πολυμέσο έχει σημειωθεί ως ευαίσθητο",
diff --git a/app/javascript/mastodon/locales/fa.json b/app/javascript/mastodon/locales/fa.json
index ad53e9b7d..dba714951 100644
--- a/app/javascript/mastodon/locales/fa.json
+++ b/app/javascript/mastodon/locales/fa.json
@@ -166,7 +166,7 @@
   "navigation_bar.domain_blocks": "دامین‌های پنهان‌شده",
   "navigation_bar.edit_profile": "ویرایش نمایه",
   "navigation_bar.favourites": "پسندیده‌ها",
-  "navigation_bar.filters": "Muted words",
+  "navigation_bar.filters": "واژگان بی‌صداشده",
   "navigation_bar.follow_requests": "درخواست‌های پیگیری",
   "navigation_bar.info": "اطلاعات تکمیلی",
   "navigation_bar.keyboard_shortcuts": "میان‌برهای صفحه‌کلید",
diff --git a/app/javascript/mastodon/locales/ja.json b/app/javascript/mastodon/locales/ja.json
index e61b13548..81ccd6255 100644
--- a/app/javascript/mastodon/locales/ja.json
+++ b/app/javascript/mastodon/locales/ja.json
@@ -170,7 +170,7 @@
   "navigation_bar.domain_blocks": "非表示にしたドメイン",
   "navigation_bar.edit_profile": "プロフィールを編集",
   "navigation_bar.favourites": "お気に入り",
-  "navigation_bar.filters": "Muted words",
+  "navigation_bar.filters": "フィルター設定",
   "navigation_bar.follow_requests": "フォローリクエスト",
   "navigation_bar.info": "このインスタンスについて",
   "navigation_bar.keyboard_shortcuts": "ホットキー",
diff --git a/app/javascript/mastodon/locales/nl.json b/app/javascript/mastodon/locales/nl.json
index 63c902668..07fac0da1 100644
--- a/app/javascript/mastodon/locales/nl.json
+++ b/app/javascript/mastodon/locales/nl.json
@@ -166,7 +166,7 @@
   "navigation_bar.domain_blocks": "Verborgen domeinen",
   "navigation_bar.edit_profile": "Profiel bewerken",
   "navigation_bar.favourites": "Favorieten",
-  "navigation_bar.filters": "Muted words",
+  "navigation_bar.filters": "Genegeerde woorden",
   "navigation_bar.follow_requests": "Volgverzoeken",
   "navigation_bar.info": "Over deze server",
   "navigation_bar.keyboard_shortcuts": "Sneltoetsen",
diff --git a/app/javascript/mastodon/locales/oc.json b/app/javascript/mastodon/locales/oc.json
index fb025594d..2461eaac2 100644
--- a/app/javascript/mastodon/locales/oc.json
+++ b/app/javascript/mastodon/locales/oc.json
@@ -166,7 +166,7 @@
   "navigation_bar.domain_blocks": "Domenis resconduts",
   "navigation_bar.edit_profile": "Modificar lo perfil",
   "navigation_bar.favourites": "Favorits",
-  "navigation_bar.filters": "Muted words",
+  "navigation_bar.filters": "Mots ignorats",
   "navigation_bar.follow_requests": "Demandas d’abonament",
   "navigation_bar.info": "Mai informacions",
   "navigation_bar.keyboard_shortcuts": "Acorchis clavièr",
diff --git a/app/javascript/mastodon/locales/pt-BR.json b/app/javascript/mastodon/locales/pt-BR.json
index 4ee02f757..f05966c96 100644
--- a/app/javascript/mastodon/locales/pt-BR.json
+++ b/app/javascript/mastodon/locales/pt-BR.json
@@ -166,7 +166,7 @@
   "navigation_bar.domain_blocks": "Domínios escondidos",
   "navigation_bar.edit_profile": "Editar perfil",
   "navigation_bar.favourites": "Favoritos",
-  "navigation_bar.filters": "Muted words",
+  "navigation_bar.filters": "Palavras silenciadas",
   "navigation_bar.follow_requests": "Seguidores pendentes",
   "navigation_bar.info": "Mais informações",
   "navigation_bar.keyboard_shortcuts": "Atalhos de teclado",
diff --git a/app/javascript/mastodon/locales/sk.json b/app/javascript/mastodon/locales/sk.json
index 47271f98f..66e312181 100644
--- a/app/javascript/mastodon/locales/sk.json
+++ b/app/javascript/mastodon/locales/sk.json
@@ -7,7 +7,7 @@
   "account.disclaimer_full": "Inofrmácie uvedené nižšie nemusia byť úplným odrazom uživateľovho účtu.",
   "account.domain_blocked": "Doména ukrytá",
   "account.edit_profile": "Upraviť profil",
-  "account.follow": "Následovať",
+  "account.follow": "Následuj",
   "account.followers": "Sledujúci",
   "account.follows": "Následuje",
   "account.follows_you": "Následuje ťa",
diff --git a/app/javascript/packs/about.js b/app/javascript/packs/about.js
index 63e12da42..843cb2c87 100644
--- a/app/javascript/packs/about.js
+++ b/app/javascript/packs/about.js
@@ -1,4 +1,7 @@
 import loadPolyfills from '../mastodon/load_polyfills';
+import { start } from '../mastodon/common';
+
+start();
 
 function loaded() {
   const TimelineContainer = require('../mastodon/containers/timeline_container').default;
diff --git a/app/javascript/packs/application.js b/app/javascript/packs/application.js
index 116632dea..c65ebed74 100644
--- a/app/javascript/packs/application.js
+++ b/app/javascript/packs/application.js
@@ -1,4 +1,7 @@
 import loadPolyfills from '../mastodon/load_polyfills';
+import { start } from '../mastodon/common';
+
+start();
 
 loadPolyfills().then(() => {
   require('../mastodon/main').default();
diff --git a/app/javascript/packs/public.js b/app/javascript/packs/public.js
index d273231bd..0d37c34c8 100644
--- a/app/javascript/packs/public.js
+++ b/app/javascript/packs/public.js
@@ -1,5 +1,8 @@
 import loadPolyfills from '../mastodon/load_polyfills';
 import ready from '../mastodon/ready';
+import { start } from '../mastodon/common';
+
+start();
 
 function main() {
   const IntlRelativeFormat = require('intl-relativeformat').default;
diff --git a/app/javascript/packs/share.js b/app/javascript/packs/share.js
index e9580f648..4ef23e1b2 100644
--- a/app/javascript/packs/share.js
+++ b/app/javascript/packs/share.js
@@ -1,4 +1,7 @@
 import loadPolyfills from '../mastodon/load_polyfills';
+import { start } from '../mastodon/common';
+
+start();
 
 function loaded() {
   const ComposeContainer = require('../mastodon/containers/compose_container').default;
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index 560b11ddf..42f507296 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -165,6 +165,11 @@
       color: $valid-value-color;
       font-weight: 500;
     }
+
+    .negative-hint {
+      color: $error-value-color;
+      font-weight: 500;
+    }
   }
 
   .simple_form {
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index de8538dd1..744f2561c 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -1478,6 +1478,7 @@ a.account__display-name {
   display: flex;
   align-items: center;
   justify-content: center;
+  flex-direction: column;
 
   .image-loader__preview-canvas {
     max-width: $media-modal-media-max-width;
@@ -1486,8 +1487,8 @@ a.account__display-name {
     object-fit: contain;
   }
 
-  &.image-loader--loading .image-loader__preview-canvas {
-    filter: blur(2px);
+  .loading-bar {
+    position: relative;
   }
 
   &.image-loader--amorphous .image-loader__preview-canvas {
diff --git a/app/lib/language_detector.rb b/app/lib/language_detector.rb
index c6f52f0c7..688d21fd8 100644
--- a/app/lib/language_detector.rb
+++ b/app/lib/language_detector.rb
@@ -3,12 +3,16 @@
 class LanguageDetector
   include Singleton
 
+  CHARACTER_THRESHOLD = 140
+
   def initialize
     @identifier = CLD3::NNetLanguageIdentifier.new(1, 2048)
   end
 
   def detect(text, account)
-    detect_language_code(text) || default_locale(account)
+    input_text = prepare_text(text)
+    return if input_text.blank?
+    detect_language_code(input_text) || default_locale(account)
   end
 
   def language_names
@@ -23,8 +27,13 @@ class LanguageDetector
     simplify_text(text).strip
   end
 
+  def unreliable_input?(text)
+    text.size < CHARACTER_THRESHOLD
+  end
+
   def detect_language_code(text)
-    result = @identifier.find_language(prepare_text(text))
+    return if unreliable_input?(text)
+    result = @identifier.find_language(text)
     iso6391(result.language.to_s).to_sym if result.reliable?
   end
 
@@ -66,6 +75,6 @@ class LanguageDetector
   end
 
   def default_locale(account)
-    account.user_locale&.to_sym
+    account.user_locale&.to_sym || I18n.default_locale
   end
 end
diff --git a/app/lib/potential_friendship_tracker.rb b/app/lib/potential_friendship_tracker.rb
index 362482669..017a9748d 100644
--- a/app/lib/potential_friendship_tracker.rb
+++ b/app/lib/potential_friendship_tracker.rb
@@ -12,6 +12,8 @@ class PotentialFriendshipTracker
 
   class << self
     def record(account_id, target_account_id, action)
+      return if account_id == target_account_id
+
       key    = "interactions:#{account_id}"
       weight = WEIGHTS[action]
 
diff --git a/app/models/relay.rb b/app/models/relay.rb
new file mode 100644
index 000000000..76143bb27
--- /dev/null
+++ b/app/models/relay.rb
@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: relays
+#
+#  id                 :bigint(8)        not null, primary key
+#  inbox_url          :string           default(""), not null
+#  enabled            :boolean          default(FALSE), not null
+#  follow_activity_id :string
+#  created_at         :datetime         not null
+#  updated_at         :datetime         not null
+#
+
+class Relay < ApplicationRecord
+  PRESET_RELAY = 'https://relay.joinmastodon.org/inbox'
+
+  validates :inbox_url, presence: true, uniqueness: true, url: true, if: :will_save_change_to_inbox_url?
+
+  scope :enabled, -> { where(enabled: true) }
+
+  before_destroy :ensure_disabled
+
+  def enable!
+    activity_id = ActivityPub::TagManager.instance.generate_uri_for(nil)
+    payload     = Oj.dump(follow_activity(activity_id))
+
+    ActivityPub::DeliveryWorker.perform_async(payload, some_local_account.id, inbox_url)
+    update(enabled: true, follow_activity_id: activity_id)
+  end
+
+  def disable!
+    activity_id = ActivityPub::TagManager.instance.generate_uri_for(nil)
+    payload     = Oj.dump(unfollow_activity(activity_id))
+
+    ActivityPub::DeliveryWorker.perform_async(payload, some_local_account.id, inbox_url)
+    update(enabled: false, follow_activity_id: nil)
+  end
+
+  private
+
+  def follow_activity(activity_id)
+    {
+      '@context': ActivityPub::TagManager::CONTEXT,
+      id: activity_id,
+      type: 'Follow',
+      actor: ActivityPub::TagManager.instance.uri_for(some_local_account),
+      object: ActivityPub::TagManager::COLLECTIONS[:public],
+    }
+  end
+
+  def unfollow_activity(activity_id)
+    {
+      '@context': ActivityPub::TagManager::CONTEXT,
+      id: activity_id,
+      type: 'Undo',
+      actor: ActivityPub::TagManager.instance.uri_for(some_local_account),
+      object: {
+        id: follow_activity_id,
+        type: 'Follow',
+        actor: ActivityPub::TagManager.instance.uri_for(some_local_account),
+        object: ActivityPub::TagManager::COLLECTIONS[:public],
+      },
+    }
+  end
+
+  def some_local_account
+    @some_local_account ||= Account.local.find_by(suspended: false)
+  end
+
+  def ensure_disabled
+    return unless enabled?
+    disable!
+  end
+end
diff --git a/app/policies/relay_policy.rb b/app/policies/relay_policy.rb
new file mode 100644
index 000000000..bd75e2197
--- /dev/null
+++ b/app/policies/relay_policy.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class RelayPolicy < ApplicationPolicy
+  def update?
+    admin?
+  end
+end
diff --git a/app/serializers/activitypub/delete_actor_serializer.rb b/app/serializers/activitypub/delete_actor_serializer.rb
index dfea9db4a..ddf59be97 100644
--- a/app/serializers/activitypub/delete_actor_serializer.rb
+++ b/app/serializers/activitypub/delete_actor_serializer.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub::DeleteActorSerializer < ActiveModel::Serializer
-  attributes :id, :type, :actor
+  attributes :id, :type, :actor, :to
   attribute :virtual_object, key: :object
 
   def id
@@ -19,4 +19,8 @@ class ActivityPub::DeleteActorSerializer < ActiveModel::Serializer
   def virtual_object
     actor
   end
+
+  def to
+    [ActivityPub::TagManager::COLLECTIONS[:public]]
+  end
 end
diff --git a/app/serializers/activitypub/delete_serializer.rb b/app/serializers/activitypub/delete_serializer.rb
index 2bb65135f..5012a8383 100644
--- a/app/serializers/activitypub/delete_serializer.rb
+++ b/app/serializers/activitypub/delete_serializer.rb
@@ -17,7 +17,7 @@ class ActivityPub::DeleteSerializer < ActiveModel::Serializer
     end
   end
 
-  attributes :id, :type, :actor
+  attributes :id, :type, :actor, :to
 
   has_one :object, serializer: TombstoneSerializer
 
@@ -32,4 +32,8 @@ class ActivityPub::DeleteSerializer < ActiveModel::Serializer
   def actor
     ActivityPub::TagManager.instance.uri_for(object.account)
   end
+
+  def to
+    [ActivityPub::TagManager::COLLECTIONS[:public]]
+  end
 end
diff --git a/app/serializers/activitypub/undo_announce_serializer.rb b/app/serializers/activitypub/undo_announce_serializer.rb
index 839847e22..4fc042727 100644
--- a/app/serializers/activitypub/undo_announce_serializer.rb
+++ b/app/serializers/activitypub/undo_announce_serializer.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub::UndoAnnounceSerializer < ActiveModel::Serializer
-  attributes :id, :type, :actor
+  attributes :id, :type, :actor, :to
 
   has_one :object, serializer: ActivityPub::ActivitySerializer
 
@@ -16,4 +16,8 @@ class ActivityPub::UndoAnnounceSerializer < ActiveModel::Serializer
   def actor
     ActivityPub::TagManager.instance.uri_for(object.account)
   end
+
+  def to
+    [ActivityPub::TagManager::COLLECTIONS[:public]]
+  end
 end
diff --git a/app/serializers/activitypub/update_serializer.rb b/app/serializers/activitypub/update_serializer.rb
index ebc667d96..48d7a1929 100644
--- a/app/serializers/activitypub/update_serializer.rb
+++ b/app/serializers/activitypub/update_serializer.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub::UpdateSerializer < ActiveModel::Serializer
-  attributes :id, :type, :actor
+  attributes :id, :type, :actor, :to
 
   has_one :object, serializer: ActivityPub::ActorSerializer
 
@@ -16,4 +16,8 @@ class ActivityPub::UpdateSerializer < ActiveModel::Serializer
   def actor
     ActivityPub::TagManager.instance.uri_for(object)
   end
+
+  def to
+    [ActivityPub::TagManager::COLLECTIONS[:public]]
+  end
 end
diff --git a/app/serializers/initial_state_serializer.rb b/app/serializers/initial_state_serializer.rb
index ce56f900a..204a13b55 100644
--- a/app/serializers/initial_state_serializer.rb
+++ b/app/serializers/initial_state_serializer.rb
@@ -19,6 +19,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       domain: Rails.configuration.x.local_domain,
       admin: object.admin&.id&.to_s,
       search_enabled: Chewy.enabled?,
+      version: Mastodon::Version.to_s,
       invites_enabled: Setting.min_invite_role == 'user',
     }
 
diff --git a/app/services/remove_status_service.rb b/app/services/remove_status_service.rb
index 238099169..fb889140b 100644
--- a/app/services/remove_status_service.rb
+++ b/app/services/remove_status_service.rb
@@ -90,6 +90,18 @@ class RemoveStatusService < BaseService
     ActivityPub::DeliveryWorker.push_bulk(@account.followers.inboxes) do |inbox_url|
       [signed_activity_json, @account.id, inbox_url]
     end
+
+    relay! if relayable?
+  end
+
+  def relayable?
+    @status.public_visibility?
+  end
+
+  def relay!
+    ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+      [signed_activity_json, @account.id, inbox_url]
+    end
   end
 
   def salmon_xml
diff --git a/app/services/suspend_account_service.rb b/app/services/suspend_account_service.rb
index 708d15e37..0a98f5fb9 100644
--- a/app/services/suspend_account_service.rb
+++ b/app/services/suspend_account_service.rb
@@ -22,7 +22,13 @@ class SuspendAccountService < BaseService
   end
 
   def purge_content!
-    ActivityPub::RawDistributionWorker.perform_async(delete_actor_json, @account.id) if @account.local?
+    if @account.local?
+      ActivityPub::RawDistributionWorker.perform_async(delete_actor_json, @account.id)
+
+      ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+        [delete_actor_json, @account.id, inbox_url]
+      end
+    end
 
     @account.statuses.reorder(nil).find_in_batches do |statuses|
       BatchedRemoveStatusService.new.call(statuses)
@@ -59,12 +65,14 @@ class SuspendAccountService < BaseService
   end
 
   def delete_actor_json
+    return @delete_actor_json if defined?(@delete_actor_json)
+
     payload = ActiveModelSerializers::SerializableResource.new(
       @account,
       serializer: ActivityPub::DeleteActorSerializer,
       adapter: ActivityPub::Adapter
     ).as_json
 
-    Oj.dump(ActivityPub::LinkedDataSignature.new(payload).sign!(@account))
+    @delete_actor_json = Oj.dump(ActivityPub::LinkedDataSignature.new(payload).sign!(@account))
   end
 end
diff --git a/app/views/admin/relays/_relay.html.haml b/app/views/admin/relays/_relay.html.haml
new file mode 100644
index 000000000..d974c80a6
--- /dev/null
+++ b/app/views/admin/relays/_relay.html.haml
@@ -0,0 +1,21 @@
+%tr
+  %td
+    %samp= relay.inbox_url
+  %td
+    - if relay.enabled?
+      %span.positive-hint
+        = fa_icon('check')
+        = ' '
+        = t 'admin.relays.enabled'
+    - else
+      %span.negative-hint
+        = fa_icon('times')
+        = ' '
+        = t 'admin.relays.disabled'
+  %td
+    - if relay.enabled?
+      = table_link_to 'power-off', t('admin.relays.disable'), disable_admin_relay_path(relay), method: :post, data: { confirm: t('admin.accounts.are_you_sure') }
+    - else
+      = table_link_to 'power-off', t('admin.relays.enable'), enable_admin_relay_path(relay), method: :post, data: { confirm: t('admin.accounts.are_you_sure') }
+
+    = table_link_to 'times', t('admin.relays.delete'), admin_relay_path(relay), method: :delete, data: { confirm: t('admin.accounts.are_you_sure') }
diff --git a/app/views/admin/relays/index.html.haml b/app/views/admin/relays/index.html.haml
new file mode 100644
index 000000000..1636a53f8
--- /dev/null
+++ b/app/views/admin/relays/index.html.haml
@@ -0,0 +1,20 @@
+- content_for :page_title do
+  = t('admin.relays.title')
+
+.simple_form
+  %p.hint= t('admin.relays.description_html')
+  = link_to @relays.empty? ? t('admin.relays.setup') : t('admin.relays.add_new'), new_admin_relay_path, class: 'block-button'
+
+- unless @relays.empty?
+  %hr.spacer
+
+  .table-wrapper
+    %table.table
+      %thead
+        %tr
+          %th= t('admin.relays.inbox_url')
+          %th= t('admin.relays.status')
+          %th
+      %tbody
+        = render @relays
+
diff --git a/app/views/admin/relays/new.html.haml b/app/views/admin/relays/new.html.haml
new file mode 100644
index 000000000..126794acf
--- /dev/null
+++ b/app/views/admin/relays/new.html.haml
@@ -0,0 +1,13 @@
+- content_for :page_title do
+  = t('admin.relays.add_new')
+
+= simple_form_for @relay, url: admin_relays_path do |f|
+  = render 'shared/error_messages', object: @relay
+
+  .field-group
+    = f.input :inbox_url, as: :string, wrapper: :with_block_label
+
+  .actions
+    = f.button :button, t('admin.relays.save_and_enable'), type: :submit
+
+  %p.hint.subtle-hint= t('admin.relays.enable_hint')
diff --git a/app/workers/activitypub/distribution_worker.rb b/app/workers/activitypub/distribution_worker.rb
index 14bb933c0..c2bfd4f2f 100644
--- a/app/workers/activitypub/distribution_worker.rb
+++ b/app/workers/activitypub/distribution_worker.rb
@@ -14,6 +14,8 @@ class ActivityPub::DistributionWorker
     ActivityPub::DeliveryWorker.push_bulk(inboxes) do |inbox_url|
       [signed_payload, @account.id, inbox_url]
     end
+
+    relay! if relayable?
   rescue ActiveRecord::RecordNotFound
     true
   end
@@ -24,6 +26,10 @@ class ActivityPub::DistributionWorker
     @status.direct_visibility?
   end
 
+  def relayable?
+    @status.public_visibility?
+  end
+
   def inboxes
     @inboxes ||= @account.followers.inboxes
   end
@@ -39,4 +45,10 @@ class ActivityPub::DistributionWorker
       adapter: ActivityPub::Adapter
     ).as_json
   end
+
+  def relay!
+    ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+      [signed_payload, @account.id, inbox_url]
+    end
+  end
 end
diff --git a/app/workers/activitypub/update_distribution_worker.rb b/app/workers/activitypub/update_distribution_worker.rb
index f3377dcec..87efafb3e 100644
--- a/app/workers/activitypub/update_distribution_worker.rb
+++ b/app/workers/activitypub/update_distribution_worker.rb
@@ -9,7 +9,11 @@ class ActivityPub::UpdateDistributionWorker
     @account = Account.find(account_id)
 
     ActivityPub::DeliveryWorker.push_bulk(inboxes) do |inbox_url|
-      [payload, @account.id, inbox_url]
+      [signed_payload, @account.id, inbox_url]
+    end
+
+    ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+      [signed_payload, @account.id, inbox_url]
     end
   rescue ActiveRecord::RecordNotFound
     true
@@ -21,6 +25,10 @@ class ActivityPub::UpdateDistributionWorker
     @inboxes ||= @account.followers.inboxes
   end
 
+  def signed_payload
+    @signed_payload ||= Oj.dump(ActivityPub::LinkedDataSignature.new(payload).sign!(@account))
+  end
+
   def payload
     @payload ||= ActiveModelSerializers::SerializableResource.new(
       @account,