Merge pull request #135 from Y-zu-don-maintenance-org/features/emoji

Features/emoji

app/controllers/api/base_controller.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 class Api::BaseController < ApplicationController
-  DEFAULT_STATUSES_LIMIT = 20
-  DEFAULT_ACCOUNTS_LIMIT = 40
+  DEFAULT_STATUSES_LIMIT       = 20
+  DEFAULT_ACCOUNTS_LIMIT       = 40
 
   include Api::RateLimitHeaders
   include Api::AccessTokenTrackingConcern

app/controllers/api/v1/statuses/emoji_reactioned_by_accounts_controller.rb

@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+class Api::V1::Statuses::EmojiReactionedByAccountsController < Api::BaseController
+  include Authorization
+
+  before_action -> { authorize_if_got_token! :read, :'read:accounts' }
+  before_action :set_status
+  after_action :insert_pagination_headers
+
+  def index
+    @accounts = load_accounts
+    render json: @accounts, each_serializer: REST::EmojiReactionAccountSerializer
+  end
+
+  private
+
+  def load_accounts
+    scope = default_accounts
+    # scope = scope.where.not(account_id: current_account.excluded_from_timeline_account_ids) unless current_account.nil?
+    scope.merge(paginated_emoji_reactions).to_a
+  end
+
+  def default_accounts
+    EmojiReaction
+      .where(status_id: @status.id)
+      #.where(account: { suspended_at: nil })
+  end
+
+  def paginated_emoji_reactions
+    EmojiReaction.paginate_by_max_id(
+      limit_param(1000), #limit_param(DEFAULT_ACCOUNTS_LIMIT),
+      params[:max_id],
+      params[:since_id]
+    )
+  end
+
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def next_path
+    api_v1_status_emoji_reactioned_by_index_url pagination_params(max_id: pagination_max_id) if records_continue?
+  end
+
+  def prev_path
+    api_v1_status_emoji_reactioned_by_index_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
+  end
+
+  def pagination_max_id
+    @accounts.last.id
+  end
+
+  def pagination_since_id
+    @accounts.first.id
+  end
+
+  def records_continue?
+    @accounts.size == limit_param(DEFAULT_ACCOUNTS_LIMIT)
+  end
+
+  def set_status
+    @status = Status.find(params[:status_id])
+    authorize @status, :show?
+  rescue Mastodon::NotPermittedError
+    not_found
+  end
+
+  def pagination_params(core_params)
+    params.slice(:limit).permit(:limit).merge(core_params)
+  end
+end

app/controllers/api/v1/statuses/emoji_reactioned_by_accounts_slim_controller.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class Api::V1::Statuses::EmojiReactionedByAccountsSlimController < Api::BaseController
+  include Authorization
+
+  before_action -> { authorize_if_got_token! :read, :'read:accounts' }
+  before_action :set_status
+
+  def index
+    @accounts = load_emoji_reactions
+
+    # TODO for serialize hash object
+    render json: @accounts, each_serializer: REST::EmojiReactedBySlimSerializer
+  end
+
+  private
+
+  def load_emoji_reactions
+    @status.generate_emoji_reactions_grouped_by_account
+  end
+
+  def set_status
+    @status = Status.find(params[:status_id])
+    authorize @status, :show?
+  rescue Mastodon::NotPermittedError
+    not_found
+  end
+end

app/controllers/api/v1/statuses/emoji_reactions_controller.rb

@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+class Api::V1::Statuses::EmojiReactionsController < Api::BaseController
+  include Authorization
+
+  before_action -> { doorkeeper_authorize! :write, :'write:emoji_reactions' }
+  before_action :require_user!
+  before_action :set_status, only: %i(create update destroy)
+  before_action :set_status_without_authorize, only: [:destroy]
+
+  def create
+    create_private(params[:emoji])
+  end
+
+  # For compatible with Fedibird API
+  def update
+    create_private(params[:id])
+  end
+
+  def destroy
+    emoji = params[:emoji] || params[:id]
+
+    if emoji
+      shortcode, domain = emoji.split('@')
+      emoji_reaction = EmojiReaction.where(account_id: current_account.id).where(status_id: @status.id).where(name: shortcode)
+                                    .find { |reaction| domain == '' ? reaction.custom_emoji.nil? : reaction.custom_emoji&.domain == domain }
+
+      authorize @status, :show? if emoji_reaction.nil?
+    end
+
+    UnEmojiReactWorker.perform_async(current_account.id, @status.id, emoji)
+
+    render json: @status, serializer: REST::StatusSerializer, relationships: StatusRelationshipsPresenter.new(
+      [@status], current_account.id, emoji_reactions_map: { @status.id => false }
+    )
+  rescue Mastodon::NotPermittedError
+    not_found
+  end
+
+  private
+
+  def create_private(emoji)
+    count = EmojiReaction.where(account: current_account, status: @status).count
+
+    if count >= EmojiReaction::EMOJI_REACTION_PER_ACCOUNT_LIMIT
+      bad_request
+      return
+    end
+
+    EmojiReactService.new.call(current_account, @status, emoji)
+    render json: @status, serializer: REST::StatusSerializer
+  end
+
+  def set_status
+    set_status_without_authorize
+    authorize @status, :show?
+  rescue Mastodon::NotPermittedError
+    not_found
+  end
+
+  def set_status_without_authorize
+    @status = Status.find(params[:status_id])
+  end
+end

app/javascript/mastodon/actions/importer/normalizer.js

@@ -40,6 +40,10 @@ export function normalizeStatus(status, normalOldStatus) {
     normalStatus.filtered = status.filtered.map(normalizeFilterResult);
   }
 
+  if (status.emoji_reactions) {
+    normalStatus.emojiReactions = status.emoji_reactions;
+  }
+
   // Only calculate these values when status first encountered and
   // when the underlying values change. Otherwise keep the ones
   // already in the reducer

app/javascript/mastodon/actions/interactions.js

@@ -15,6 +15,10 @@ export const FAVOURITE_REQUEST = 'FAVOURITE_REQUEST';
 export const FAVOURITE_SUCCESS = 'FAVOURITE_SUCCESS';
 export const FAVOURITE_FAIL    = 'FAVOURITE_FAIL';
 
+export const EMOJIREACT_REQUEST = 'EMOJIREACT_REQUEST';
+export const EMOJIREACT_SUCCESS = 'EMOJIREACT_SUCCESS';
+export const EMOJIREACT_FAIL    = 'EMOJIREACT_FAIL';
+
 export const UNREBLOG_REQUEST = 'UNREBLOG_REQUEST';
 export const UNREBLOG_SUCCESS = 'UNREBLOG_SUCCESS';
 export const UNREBLOG_FAIL    = 'UNREBLOG_FAIL';
@@ -23,6 +27,10 @@ export const UNFAVOURITE_REQUEST = 'UNFAVOURITE_REQUEST';
 export const UNFAVOURITE_SUCCESS = 'UNFAVOURITE_SUCCESS';
 export const UNFAVOURITE_FAIL    = 'UNFAVOURITE_FAIL';
 
+export const UNEMOJIREACT_REQUEST = 'UNEMOJIREACT_REQUEST';
+export const UNEMOJIREACT_SUCCESS = 'UNEMOJIREACT_SUCCESS';
+export const UNEMOJIREACT_FAIL    = 'UNEMOJIREACT_FAIL';
+
 export const REBLOGS_FETCH_REQUEST = 'REBLOGS_FETCH_REQUEST';
 export const REBLOGS_FETCH_SUCCESS = 'REBLOGS_FETCH_SUCCESS';
 export const REBLOGS_FETCH_FAIL    = 'REBLOGS_FETCH_FAIL';
@@ -33,7 +41,11 @@ export const FAVOURITES_FETCH_FAIL    = 'FAVOURITES_FETCH_FAIL';
 
 export const FAVOURITES_EXPAND_REQUEST = 'FAVOURITES_EXPAND_REQUEST';
 export const FAVOURITES_EXPAND_SUCCESS = 'FAVOURITES_EXPAND_SUCCESS';
-export const FAVOURITES_EXPAND_FAIL = 'FAVOURITES_EXPAND_FAIL';
+export const FAVOURITES_EXPAND_FAIL    = 'FAVOURITES_EXPAND_FAIL';
+
+export const EMOJI_REACTIONS_FETCH_REQUEST = 'EMOJI_REACTIONS_FETCH_REQUEST';
+export const EMOJI_REACTIONS_FETCH_SUCCESS = 'EMOJI_REACTIONS_FETCH_SUCCESS';
+export const EMOJI_REACTIONS_FETCH_FAIL    = 'EMOJI_REACTIONS_FETCH_FAIL';
 
 export const PIN_REQUEST = 'PIN_REQUEST';
 export const PIN_SUCCESS = 'PIN_SUCCESS';
@@ -205,6 +217,88 @@ export function unfavouriteFail(status, error) {
   };
 }
 
+export function emojiReact(status, emoji) {
+  return function (dispatch, getState) {
+    dispatch(emojiReactRequest(status, emoji));
+
+    const api_emoji = typeof emoji !== 'string' ? (emoji.custom ? (emoji.name + (emoji.domain || '')) : emoji.native) : emoji;
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/emoji_reactions`, { emoji: api_emoji }).then(function () {
+      dispatch(emojiReactSuccess(status, emoji));
+    }).catch(function (error) {
+      dispatch(emojiReactFail(status, emoji, error));
+    });
+  };
+}
+
+export function unEmojiReact(status, emoji) {
+  return (dispatch, getState) => {
+    dispatch(unEmojiReactRequest(status, emoji));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/emoji_unreaction`, { emoji }).then(() => {
+      dispatch(unEmojiReactSuccess(status, emoji));
+    }).catch(error => {
+      dispatch(unEmojiReactFail(status, emoji, error));
+    });
+  };
+}
+
+export function emojiReactRequest(status, emoji) {
+  return {
+    type: EMOJIREACT_REQUEST,
+    status: status,
+    emoji: emoji,
+    skipLoading: true,
+  };
+}
+
+export function emojiReactSuccess(status, emoji) {
+  return {
+    type: EMOJIREACT_SUCCESS,
+    status: status,
+    emoji: emoji,
+    skipLoading: true,
+  };
+}
+
+export function emojiReactFail(status, emoji, error) {
+  return {
+    type: EMOJIREACT_FAIL,
+    status: status,
+    emoji: emoji,
+    error: error,
+    skipLoading: true,
+  };
+}
+
+export function unEmojiReactRequest(status, emoji) {
+  return {
+    type: UNEMOJIREACT_REQUEST,
+    status: status,
+    emoji: emoji,
+    skipLoading: true,
+  };
+}
+
+export function unEmojiReactSuccess(status, emoji) {
+  return {
+    type: UNEMOJIREACT_SUCCESS,
+    status: status,
+    emoji: emoji,
+    skipLoading: true,
+  };
+}
+
+export function unEmojiReactFail(status, emoji, error) {
+  return {
+    type: UNEMOJIREACT_FAIL,
+    status: status,
+    emoji: emoji,
+    error: error,
+    skipLoading: true,
+  };
+}
+
 export function bookmark(status) {
   return function (dispatch, getState) {
     dispatch(bookmarkRequest(status));
@@ -441,6 +535,85 @@ export function expandFavouritesFail(id, error) {
   };
 }
 
+export function fetchEmojiReactions(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchEmojiReactionsRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/emoji_reactioned_by`).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(importFetchedAccounts(response.data.map((er) => er.account)));
+      dispatch(fetchEmojiReactionsSuccess(id, response.data, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(fetchEmojiReactionsFail(id, error));
+    });
+  };
+}
+
+export function fetchEmojiReactionsRequest(id) {
+  return {
+    type: EMOJI_REACTIONS_FETCH_REQUEST,
+    id,
+  };
+}
+
+export function fetchEmojiReactionsSuccess(id, accounts, next) {
+  return {
+    type: EMOJI_REACTIONS_FETCH_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+}
+
+export function fetchEmojiReactionsFail(id, error) {
+  return {
+    type: EMOJI_REACTIONS_FETCH_FAIL,
+    error,
+  };
+}
+
+export function expandEmojiReactions(id) {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'emoji_reactioned_by', id, 'next']);
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandEmojiReactionsRequest(id));
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(importFetchedAccounts(response.data.map((er) => er.account)));
+      dispatch(expandEmojiReactionsSuccess(id, response.data, next ? next.uri : null));
+    }).catch(error => dispatch(expandEmojiReactionsFail(id, error)));
+  };
+}
+
+export function expandEmojiReactionsRequest(id) {
+  return {
+    type: EMOJI_REACTIONS_EXPAND_REQUEST,
+    id,
+  };
+}
+
+export function expandEmojiReactionsSuccess(id, accounts, next) {
+  return {
+    type: EMOJI_REACTIONS_EXPAND_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+}
+
+export function expandEmojiReactionsFail(id, error) {
+  return {
+    type: EMOJI_REACTIONS_EXPAND_FAIL,
+    id,
+    error,
+  };
+}
+
 export function pin(status) {
   return (dispatch, getState) => {
     dispatch(pinRequest(status));

app/javascript/mastodon/actions/notifications.js

@@ -21,6 +21,7 @@ import { submitMarkers } from './markers';
 import { notificationsUpdate } from "./notifications_typed";
 import { register as registerPushNotifications } from './push_notifications';
 import { saveSettings } from './settings';
+import { STATUS_EMOJI_REACTION_UPDATE } from './statuses';
 
 export * from "./notifications_typed";
 
@@ -61,6 +62,15 @@ export const loadPending = () => ({
   type: NOTIFICATIONS_LOAD_PENDING,
 });
 
+export function updateEmojiReactions(emoji_reaction, accountId) {
+  return (dispatch) =>
+    dispatch({
+      type: STATUS_EMOJI_REACTION_UPDATE,
+      emoji_reaction,
+      accountId,
+    });
+}
+
 export function updateNotifications(notification, intlMessages, intlLocale) {
   return (dispatch, getState) => {
     const activeFilter = getState().getIn(['settings', 'notifications', 'quickFilter', 'active']);
@@ -130,10 +140,13 @@ const excludeTypesFromFilter = filter => {
     'follow',
     'follow_request',
     'favourite',
+    'emoji_reaction',
     'reblog',
+    'status_reference',
     'mention',
     'poll',
     'status',
+    'list_status',
     'update',
     'admin.sign_up',
     'admin.report',

app/javascript/mastodon/actions/statuses.js

@@ -42,6 +42,8 @@ export const STATUS_TRANSLATE_SUCCESS = 'STATUS_TRANSLATE_SUCCESS';
 export const STATUS_TRANSLATE_FAIL    = 'STATUS_TRANSLATE_FAIL';
 export const STATUS_TRANSLATE_UNDO    = 'STATUS_TRANSLATE_UNDO';
 
+export const STATUS_EMOJI_REACTION_UPDATE = 'STATUS_EMOJI_REACTION_UPDATE';
+
 export function fetchStatusRequest(id, skipLoading) {
   return {
     type: STATUS_FETCH_REQUEST,
@@ -372,4 +374,9 @@ export function revealQuote(ids) {
     type: QUOTE_REVEAL,
     ids,
   };
-}
+};
+
+export const updateEmojiReaction = (emoji_reaction) => ({
+  type: STATUS_EMOJI_REACTION_UPDATE,
+  emoji_reaction,
+});

app/javascript/mastodon/actions/streaming.js

@@ -10,7 +10,7 @@ import {
   deleteAnnouncement,
 } from './announcements';
 import { updateConversations } from './conversations';
-import { updateNotifications, expandNotifications } from './notifications';
+import { updateNotifications, expandNotifications, updateEmojiReactions } from './notifications';
 import { updateStatus } from './statuses';
 import {
   updateTimeline,
@@ -24,6 +24,8 @@ import {
   fillListTimelineGaps,
 } from './timelines';
 
+const { messages } = getLocale();
+
 /**
  * @param {number} max
  * @returns {number}
@@ -102,6 +104,10 @@ export const connectTimelineStream = (timelineId, channelName, params = {}, opti
           // @ts-expect-error
           dispatch(updateNotifications(JSON.parse(data.payload), messages, locale));
           break;
+        case 'emoji_reaction':
+            // @ts-expect-error
+            dispatch(updateEmojiReactions(JSON.parse(data.payload), getState().getIn(['meta', 'me'])));
+            break;
         case 'conversation':
           // @ts-expect-error
           dispatch(updateConversations(JSON.parse(data.payload)));

app/javascript/mastodon/components/account.jsx

@@ -46,6 +46,8 @@ class Account extends ImmutablePureComponent {
     minimal: PropTypes.bool,
     defaultAction: PropTypes.string,
     withBio: PropTypes.bool,
+    onActionClick: PropTypes.func,
+    children: PropTypes.object,
   };
 
   static defaultProps = {
@@ -73,7 +75,7 @@ class Account extends ImmutablePureComponent {
   };
 
   render () {
-    const { account, intl, hidden, withBio, defaultAction, size, minimal } = this.props;
+    const { account, intl, hidden, onActionClick, actionIcon, actionTitle, withBio, defaultAction, size, minimal, children } = this.props;
 
     if (!account) {
       return <EmptyAccount size={size} minimal={minimal} />;
@@ -156,11 +158,13 @@ class Account extends ImmutablePureComponent {
             </div>
           </Link>
 
-          {!minimal && (
-            <div className='account__relationship'>
-              {buttons}
-            </div>
-          )}
+          <div>
+            {children}
+          </div>
+
+          <div className='account__relationship'>
+            {buttons}
+          </div>
         </div>
 
         {withBio && (account.get('note').length > 0 ? (

app/javascript/mastodon/components/emoji_view.jsx

@@ -0,0 +1,33 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { injectIntl } from 'react-intl';
+import emojify from '../features/emoji/emoji';
+import classNames from 'classnames';
+
+export default class EmojiView extends React.PureComponent {
+
+  static propTypes = {
+    name: PropTypes.string,
+    url: PropTypes.string,
+    staticUrl: PropTypes.string,
+  };
+
+  render () {
+    const { name, url, staticUrl } = this.props;
+
+    let emojiHtml = null;
+    if (url) {
+      let customEmojis = {};
+      customEmojis[`:${name}:`] = { url, static_url: staticUrl };
+      emojiHtml = emojify(`:${name}:`, customEmojis);
+    } else {
+      emojiHtml = emojify(name);
+    }
+
+    return (
+      <span className='emoji' dangerouslySetInnerHTML={{ __html: emojiHtml }} />
+    );
+  }
+
+}

app/javascript/mastodon/components/status.jsx

@@ -1,5 +1,8 @@
 import PropTypes from 'prop-types';
 
+import StatusEmojiReactionsBar from './status_emoji_reactions_bar';
+import AttachmentList from './attachment_list';
+
 import { injectIntl, defineMessages, FormattedMessage } from 'react-intl';
 
 import classNames from 'classnames';
@@ -163,6 +166,8 @@ class Status extends ImmutablePureComponent {
     onClick: PropTypes.func,
     onReply: PropTypes.func,
     onFavourite: PropTypes.func,
+    onEmojiReact: PropTypes.func,
+    onUnEmojiReact: PropTypes.func,
     onReblog: PropTypes.func,
     onDelete: PropTypes.func,
     onDirect: PropTypes.func,
@@ -198,6 +203,7 @@ class Status extends ImmutablePureComponent {
     }),
     contextType: PropTypes.string,
     ...WithOptionalRouterPropTypes,
+    withoutEmojiReactions: PropTypes.bool,
   };
 
   // Avoid checking props that are functions (and whose equality will always
@@ -677,6 +683,12 @@ class Status extends ImmutablePureComponent {
     const {statusContentProps, hashtagBar} = getHashtagBarForStatus(status);
     const expanded = !status.get('hidden') || status.get('spoiler_text').length === 0;
 
+    let emojiReactionsBar = null;
+    if (!this.props.withoutEmojiReactions && status.get('emoji_reactions')) {
+      const emojiReactions = status.get('emoji_reactions');
+      emojiReactionsBar = <StatusEmojiReactionsBar emojiReactions={emojiReactions} status={status} onEmojiReact={this.props.onEmojiReact} onUnEmojiReact={this.props.onUnEmojiReact} />;
+    }
+
     return (
       <HotKeys handlers={handlers}>
         <div className={classNames('status__wrapper', `status__wrapper-${status.get('visibility')}`, { 'status__wrapper-reply': !!status.get('in_reply_to_id'), unread, focusable: !this.props.muted })} tabIndex={this.props.muted ? null : 0} data-featured={featured ? 'true' : null} aria-label={textForScreenReader(intl, status, rebloggedByText)} ref={this.handleRef} data-nosnippet={status.getIn(['account', 'noindex'], true) || undefined}>
@@ -720,6 +732,8 @@ class Status extends ImmutablePureComponent {
             
             {expanded && hashtagBar}
 
+            {emojiReactionsBar}
+
             <StatusActionBar scrollKey={scrollKey} status={status} account={account} onFilter={matchedFilters ? this.handleFilterClick : null} {...other} />
           </div>
         </div>

app/javascript/mastodon/components/status_action_bar.jsx

@@ -1,5 +1,6 @@
 import PropTypes from 'prop-types';
 
+import EmojiPickerDropdown from '../features/compose/containers/emoji_picker_dropdown_container';
 import { defineMessages, injectIntl } from 'react-intl';
 
 import classNames from 'classnames';
@@ -51,6 +52,7 @@ const messages = defineMessages({
   quote: { id: 'status.quote', defaultMessage: 'Quote' },
   cannot_quote: { id: 'status.cannot_quote', defaultMessage: 'This post cannot be quoted' },
   favourite: { id: 'status.favourite', defaultMessage: 'Favorite' },
+  emojiReaction: { id: 'status.emoji_reaction', defaultMessage: 'Emoji Reaction' },
   bookmark: { id: 'status.bookmark', defaultMessage: 'Bookmark' },
   removeBookmark: { id: 'status.remove_bookmark', defaultMessage: 'Remove bookmark' },
   open: { id: 'status.open', defaultMessage: 'Expand this status' },
@@ -88,6 +90,7 @@ class StatusActionBar extends ImmutablePureComponent {
     relationship: ImmutablePropTypes.map,
     onReply: PropTypes.func,
     onFavourite: PropTypes.func,
+    onEmojiReact: PropTypes.func,
     onReblog: PropTypes.func,
     onQuote: PropTypes.func,
     onDelete: PropTypes.func,
@@ -150,6 +153,16 @@ class StatusActionBar extends ImmutablePureComponent {
     }
   };
 
+  handleEmojiPick = (data) => {
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      this.props.onEmojiReact(this.props.status, data);
+    } else {
+      this.props.onInteractionModal('favourite', this.props.status);
+    }
+  };
+
   handleReblogClick = e => {
     const { signedIn } = this.context.identity;
 
@@ -403,6 +416,10 @@ class StatusActionBar extends ImmutablePureComponent {
 
     const isReply = status.get('in_reply_to_account_id') === status.getIn(['account', 'id']);
 
+    const emojiPickerButton = (
+      <IconButton className='status__action-bar__button' title={intl.formatMessage(messages.emojiReaction)} icon='smile-o' />
+    );
+
     return (
       <div className='status__action-bar'>
         <IconButton className='status__action-bar__button' title={replyTitle} icon={isReply ? 'reply' : replyIcon} iconComponent={isReply ? ReplyIcon : replyIconComponent} onClick={this.handleReplyClick} counter={status.get('replies_count')} />
@@ -410,6 +427,7 @@ class StatusActionBar extends ImmutablePureComponent {
         <IconButton className='status__action-bar__button star-icon' animate active={status.get('favourited')} pressed={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' iconComponent={status.get('favourited') ? StarIcon : StarBorderIcon} onClick={this.handleFavouriteClick} counter={withCounters ? status.get('favourites_count') : undefined} />
         <IconButton className='status__action-bar__button' disabled={!publicStatus} title={StatusActionBar.quoteTitle(intl, messages, publicStatus)} icon='format-quote' iconComponent={FormatQuoteIcon} onClick={this.handleQuoteClick} />
         <IconButton className='status__action-bar__button bookmark-icon' disabled={!signedIn} active={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' iconComponent={status.get('bookmarked') ? BookmarkIcon : BookmarkBorderIcon} onClick={this.handleBookmarkClick} />
+        <EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} />
 
         {filterButton}
 

app/javascript/mastodon/components/status_emoji_reactions_bar.jsx

@@ -0,0 +1,96 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { injectIntl } from 'react-intl';
+import emojify from '../features/emoji/emoji';
+import classNames from 'classnames';
+import EmojiView from './emoji_view';
+
+class EmojiReactionButton extends React.PureComponent {
+
+  static propTypes = {
+    name: PropTypes.string,
+    domain: PropTypes.string,
+    url: PropTypes.string,
+    staticUrl: PropTypes.string,
+    count: PropTypes.number.isRequired,
+    me: PropTypes.bool,
+    onEmojiReact: PropTypes.func,
+    onUnEmojiReact: PropTypes.func,
+  };
+
+  onClick = () => {
+    const { name, domain, me } = this.props;
+
+    const nameParameter = domain ? `${name}@${domain}` : name;
+    if (me) {
+      if (this.props.onUnEmojiReact) this.props.onUnEmojiReact(nameParameter);
+    } else {
+      if (this.props.onEmojiReact) this.props.onEmojiReact(nameParameter);
+    }
+  };
+
+  render () {
+    const { name, url, staticUrl, count, me } = this.props;
+
+    const classList = {
+      'reactions-bar__item': true,
+      'active': me,
+    };
+
+    return (
+      <button className={classNames(classList)} type='button' onClick={this.onClick}>
+        <span className='reactions-bar__item__emoji'>
+          <EmojiView name={name} url={url} staticUrl={staticUrl} />
+        </span>
+        <span className='reactions-bar__item__count'>{count}</span>
+      </button>
+    );
+  }
+
+}
+
+class StatusEmojiReactionsBar extends React.PureComponent {
+
+  static propTypes = {
+    emojiReactions: ImmutablePropTypes.list.isRequired,
+    status: ImmutablePropTypes.map,
+    onEmojiReact: PropTypes.func,
+    onUnEmojiReact: PropTypes.func,
+  };
+
+  onEmojiReact = (name) => {
+    if (!this.props.onEmojiReact) return;
+    this.props.onEmojiReact(this.props.status, name);
+  };
+
+  onUnEmojiReact = (name) => {
+    if (!this.props.onUnEmojiReact) return;
+    this.props.onUnEmojiReact(this.props.status, name);
+  };
+
+  render () {
+    const { emojiReactions } = this.props;
+
+    const emojiButtons = Array.from(emojiReactions).map((emoji, index) => (
+      <EmojiReactionButton
+        key={index}
+        name={emoji.get('name')}
+        count={emoji.get('count')}
+        me={emoji.get('me')}
+        url={emoji.get('url')}
+        staticUrl={emoji.get('static_url')}
+        domain={emoji.get('domain')}
+        onEmojiReact={this.onEmojiReact}
+        onUnEmojiReact={this.onUnEmojiReact}
+      />));
+
+    return (
+      <div className='status__emoji-reactions-bar'>
+        {emojiButtons}
+      </div>
+    );
+  }
+
+}
+export default injectIntl(StatusEmojiReactionsBar);

app/javascript/mastodon/containers/status_container.jsx

@@ -25,9 +25,11 @@ import {
 import {
   reblog,
   favourite,
+  emojiReact,
   bookmark,
   unreblog,
   unfavourite,
+  unEmojiReact,
   unbookmark,
   pin,
   unpin,
@@ -140,6 +142,14 @@ const mapDispatchToProps = (dispatch, { intl, contextType }) => ({
     }
   },
 
+  onEmojiReact (status, emoji) {
+    dispatch(emojiReact(status, emoji));
+  },
+
+  onUnEmojiReact (status, emoji) {
+    dispatch(unEmojiReact(status, emoji));
+  },
+
   onBookmark (status) {
     if (status.get('bookmarked')) {
       dispatch(unbookmark(status));

app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.jsx

@@ -330,6 +330,7 @@ class EmojiPickerDropdown extends PureComponent {
   state = {
     active: false,
     loading: false,
+    bottom: true,
   };
 
   setRef = (c) => {
@@ -337,6 +338,7 @@ class EmojiPickerDropdown extends PureComponent {
   };
 
   onShowDropdown = () => {
+    this.updateDropdownPosition();
     this.setState({ active: true });
 
     if (!EmojiPicker) {
@@ -357,6 +359,23 @@ class EmojiPickerDropdown extends PureComponent {
     this.setState({ active: false });
   };
 
+  updateDropdownPosition = () => {
+    let bottom = true;
+
+    if (this.target) {
+      const height = window.innerHeight;
+      const rect = this.target.getBoundingClientRect();
+
+      if (height && rect) {
+        bottom = height / 2 > rect.top;
+      }
+    }
+
+    if (this.state.bottom !== bottom) {
+      this.setState({ bottom });
+    }
+  };
+
   onToggle = (e) => {
     if (!this.state.loading && (!e.key || e.key === 'Enter')) {
       if (this.state.active) {
@@ -384,7 +403,7 @@ class EmojiPickerDropdown extends PureComponent {
   render () {
     const { intl, onPickEmoji, onSkinTone, skinTone, frequentlyUsedEmojis } = this.props;
     const title = intl.formatMessage(messages.emoji);
-    const { active, loading } = this.state;
+    const { active, loading, bottom } = this.state;
 
     return (
       <div className='emoji-picker-dropdown' onKeyDown={this.handleKeyDown} ref={this.setTargetRef}>
@@ -397,7 +416,7 @@ class EmojiPickerDropdown extends PureComponent {
           inverted
         />
 
-        <Overlay show={active} placement={'bottom'} target={this.findTarget} popperConfig={{ strategy: 'fixed' }}>
+        <Overlay show={active} placement={ bottom ? 'bottom' : 'top' } target={this.findTarget} popperConfig={{ strategy: 'fixed' }}>
           {({ props, placement })=> (
             <div {...props} style={{ ...props.style }}>
               <div className={`dropdown-animation ${placement}`}>

app/javascript/mastodon/features/emoji_reactions/index.jsx

@@ -0,0 +1,121 @@
+import PropTypes from 'prop-types';
+
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+
+import { Helmet } from 'react-helmet';
+
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { connect } from 'react-redux';
+
+import { ReactComponent as RefreshIcon } from '@material-symbols/svg-600/outlined/refresh.svg';
+import { debounce } from 'lodash';
+
+import { fetchEmojiReactions, expandEmojiReactions } from 'mastodon/actions/interactions';
+import ColumnHeader from 'mastodon/components/column_header';
+import { Icon } from 'mastodon/components/icon';
+import ScrollableList from 'mastodon/components/scrollable_list';
+import AccountContainer from 'mastodon/containers/account_container';
+import Column from 'mastodon/features/ui/components/column';
+
+
+
+import EmojiView from '../../components/emoji_view';
+import { LoadingIndicator } from '../../components/loading_indicator';
+
+const messages = defineMessages({
+  refresh: { id: 'refresh', defaultMessage: 'Refresh' },
+});
+
+const mapStateToProps = (state, props) => {
+  return {
+    accountIds: state.getIn(['user_lists', 'emoji_reactioned_by', props.params.statusId, 'items']),
+    hasMore: !!state.getIn(['user_lists', 'emoji_reactioned_by', props.params.statusId, 'next']),
+    isLoading: state.getIn(['user_lists', 'emoji_reactioned_by', props.params.statusId, 'isLoading'], true),
+  };
+};
+
+class EmojiReactions extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    hasMore: PropTypes.bool,
+    isLoading: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentWillMount () {
+    if (!this.props.accountIds) {
+      this.props.dispatch(fetchEmojiReactions(this.props.params.statusId));
+    }
+  }
+
+  handleRefresh = () => {
+    this.props.dispatch(fetchEmojiReactions(this.props.params.statusId));
+  };
+
+  handleLoadMore = debounce(() => {
+    this.props.dispatch(expandEmojiReactions(this.props.params.statusId));
+  }, 300, { leading: true });
+
+  render () {
+    const { intl, accountIds, hasMore, isLoading, multiColumn } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    let groups = {};
+    for (const emoji_reaction of accountIds) {
+      const key = emoji_reaction.account_id;
+      const value = emoji_reaction;
+      if (!groups[key]) groups[key] = [value];
+      else groups[key].push(value);
+    }
+
+    const emptyMessage = <FormattedMessage id='empty_column.emoji_reactions' defaultMessage='No one has reacted with emoji this post yet. When someone does, they will show up here.' />;
+
+    return (
+      <Column bindToDocument={!multiColumn}>
+        <ColumnHeader
+          showBackButton
+          multiColumn={multiColumn}
+          extraButton={(
+            <button type='button' className='column-header__button' title={intl.formatMessage(messages.refresh)} aria-label={intl.formatMessage(messages.refresh)} onClick={this.handleRefresh}><Icon id='refresh' icon={RefreshIcon} /></button>
+          )}
+        />
+
+        <ScrollableList
+          scrollKey='emoji_reactions'
+          onLoadMore={this.handleLoadMore}
+          hasMore={hasMore}
+          isLoading={isLoading}
+          emptyMessage={emptyMessage}
+          bindToDocument={!multiColumn}
+        >
+          {Object.keys(groups).map((key) =>(
+            <AccountContainer key={key} id={key} withNote={false} hideButtons>
+              <div style={{ 'maxWidth': '100px' }}>
+                {groups[key].map((value, index2) => <EmojiView key={index2} name={value.name} url={value.url} staticUrl={value.static_url} />)}
+              </div>
+            </AccountContainer>
+          ))}
+        </ScrollableList>
+
+        <Helmet>
+          <meta name='robots' content='noindex' />
+        </Helmet>
+      </Column>
+    );
+  }
+
+}
+
+export default connect(mapStateToProps)(injectIntl(EmojiReactions));

app/javascript/mastodon/features/notifications/components/column_settings.jsx

@@ -119,6 +119,17 @@ export default class ColumnSettings extends PureComponent {
           </div>
         </div>
 
+        <div role='group' aria-labelledby='notifications-emoji_reaction'>
+          <span id='notifications-emoji_reaction' className='column-settings__section'><FormattedMessage id='notifications.column_settings.emoji_reaction' defaultMessage='Emoji Reactions:' /></span>
+
+          <div className='column-settings__row'>
+            <SettingToggle disabled={browserPermission === 'denied'} prefix='notifications_desktop' settings={settings} settingPath={['alerts', 'emoji_reaction']} onChange={onChange} label={alertStr} />
+            {showPushSettings && <SettingToggle prefix='notifications_push' settings={pushSettings} settingPath={['alerts', 'emoji_reaction']} onChange={this.onPushChange} label={pushStr} />}
+            <SettingToggle prefix='notifications' settings={settings} settingPath={['shows', 'emoji_reaction']} onChange={onChange} label={showStr} />
+            <SettingToggle prefix='notifications' settings={settings} settingPath={['sounds', 'emoji_reaction']} onChange={onChange} label={soundStr} />
+          </div>
+        </div>
+
         <div role='group' aria-labelledby='notifications-mention'>
           <span id='notifications-mention' className='column-settings__section'><FormattedMessage id='notifications.column_settings.mention' defaultMessage='Mentions:' /></span>
 

app/javascript/mastodon/features/notifications/components/filter_bar.jsx

@@ -5,6 +5,7 @@ import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 
 import HomeIcon from '@/material-icons/400-24px/home-fill.svg?react';
 import InsertChartIcon from '@/material-icons/400-24px/insert_chart.svg?react';
+import EmojiReactionIcon from '@material-icons/400-24px/mood.svg?react';
 import PersonAddIcon from '@/material-icons/400-24px/person_add.svg?react';
 import RepeatIcon from '@/material-icons/400-24px/repeat.svg?react';
 import ReplyAllIcon from '@/material-icons/400-24px/reply_all.svg?react';
@@ -14,6 +15,7 @@ import { Icon }  from 'mastodon/components/icon';
 const tooltips = defineMessages({
   mentions: { id: 'notifications.filter.mentions', defaultMessage: 'Mentions' },
   favourites: { id: 'notifications.filter.favourites', defaultMessage: 'Favorites' },
+  emojiReactions: { id: 'notifications.filter.emoji_reactions', defaultMessage: 'Stamps' },
   boosts: { id: 'notifications.filter.boosts', defaultMessage: 'Boosts' },
   polls: { id: 'notifications.filter.polls', defaultMessage: 'Poll results' },
   follows: { id: 'notifications.filter.follows', defaultMessage: 'Follows' },
@@ -81,6 +83,13 @@ class FilterBar extends PureComponent {
         >
           <Icon id='star' icon={StarIcon} />
         </button>
+        <button
+          className={selectedFilter === 'emoji_reaction' ? 'active' : ''}
+          onClick={this.onClick('emoji_reaction')}
+          title={intl.formatMessage(tooltips.emojiReactions)}
+        >
+          <Icon id='smile-o' icon={EmojiReactionIcon} fixedWidth />
+        </button>
         <button
           className={selectedFilter === 'reblog' ? 'active' : ''}
           onClick={this.onClick('reblog')}

app/javascript/mastodon/features/notifications/components/notification.jsx

@@ -3,6 +3,7 @@ import PropTypes from 'prop-types';
 import { injectIntl, FormattedMessage, defineMessages } from 'react-intl';
 
 import classNames from 'classnames';
+
 import { Link, withRouter } from 'react-router-dom';
 
 import ImmutablePropTypes from 'react-immutable-proptypes';
@@ -27,9 +28,11 @@ import { WithRouterPropTypes } from 'mastodon/utils/react_router';
 import FollowRequestContainer from '../containers/follow_request_container';
 
 import Report from './report';
+import EmojiView from '../../../components/emoji_view';
 
 const messages = defineMessages({
   favourite: { id: 'notification.favourite', defaultMessage: '{name} favorited your status' },
+  emojiReaction: { id: 'notification.emoji_reaction', defaultMessage: '{name} reacted your status with emoji' },
   follow: { id: 'notification.follow', defaultMessage: '{name} followed you' },
   ownPoll: { id: 'notification.own_poll', defaultMessage: 'Your poll has ended' },
   poll: { id: 'notification.poll', defaultMessage: 'A poll you have voted in has ended' },
@@ -183,6 +186,7 @@ class Notification extends ImmutablePureComponent {
         cachedMediaWidth={this.props.cachedMediaWidth}
         cacheMediaWidth={this.props.cacheMediaWidth}
         unread={this.props.unread}
+        withoutEmojiReactions={true}
       />
     );
   }
@@ -211,6 +215,41 @@ class Notification extends ImmutablePureComponent {
             updateScrollBottom={this.props.updateScrollBottom}
             cachedMediaWidth={this.props.cachedMediaWidth}
             cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
+          />
+        </div>
+      </HotKeys>
+    );
+  }
+
+  renderEmojiReaction (notification, link) {
+    const { intl, unread } = this.props;
+    const emoji_reaction = notification.get('emoji_reaction');
+
+    return (
+      <HotKeys handlers={this.getHandlers()}>
+        <div className={classNames('notification notification-emoji_reaction focusable', { unread })} tabIndex='0' aria-label={notificationForScreenReader(intl, intl.formatMessage(messages.emojiReaction, { name: notification.getIn(['account', 'acct']) }), notification.get('created_at'))}>
+          <div className='notification__message'>
+            <div className='notification__emoji_reaction-icon-wrapper'>
+              <EmojiView name={emoji_reaction.get('name')} url={emoji_reaction.get('url')} staticUrl={emoji_reaction.get('static_url')} className='star-icon' fixedWidth />
+            </div>
+
+            <span title={notification.get('created_at')}>
+              <FormattedMessage id='notification.emoji_reaction' defaultMessage='{name} reacted your status with emoji' values={{ name: link }} />
+            </span>
+          </div>
+
+          <StatusContainer
+            id={notification.get('status')}
+            account={notification.get('account')}
+            muted
+            withDismiss
+            hidden={!!this.props.hidden}
+            getScrollPosition={this.props.getScrollPosition}
+            updateScrollBottom={this.props.updateScrollBottom}
+            cachedMediaWidth={this.props.cachedMediaWidth}
+            cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
           />
         </div>
       </HotKeys>
@@ -241,6 +280,7 @@ class Notification extends ImmutablePureComponent {
             updateScrollBottom={this.props.updateScrollBottom}
             cachedMediaWidth={this.props.cachedMediaWidth}
             cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
           />
         </div>
       </HotKeys>
@@ -276,6 +316,7 @@ class Notification extends ImmutablePureComponent {
             updateScrollBottom={this.props.updateScrollBottom}
             cachedMediaWidth={this.props.cachedMediaWidth}
             cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
           />
         </div>
       </HotKeys>
@@ -311,6 +352,7 @@ class Notification extends ImmutablePureComponent {
             updateScrollBottom={this.props.updateScrollBottom}
             cachedMediaWidth={this.props.cachedMediaWidth}
             cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
           />
         </div>
       </HotKeys>
@@ -352,6 +394,7 @@ class Notification extends ImmutablePureComponent {
             updateScrollBottom={this.props.updateScrollBottom}
             cachedMediaWidth={this.props.cachedMediaWidth}
             cacheMediaWidth={this.props.cacheMediaWidth}
+            withoutEmojiReactions={true}
           />
         </div>
       </HotKeys>
@@ -421,6 +464,8 @@ class Notification extends ImmutablePureComponent {
       return this.renderMention(notification);
     case 'favourite':
       return this.renderFavourite(notification, link);
+    case 'emoji_reaction':
+      return this.renderEmojiReaction(notification, link);
     case 'reblog':
       return this.renderReblog(notification, link);
     case 'status':

app/javascript/mastodon/features/notifications/containers/notification_container.js

@@ -7,6 +7,7 @@ import {
   favourite,
   unreblog,
   unfavourite,
+  emojiReact,
 } from '../../../actions/interactions';
 import {
   hideStatus,
@@ -62,6 +63,10 @@ const mapDispatchToProps = dispatch => ({
     }
   },
 
+  onEmojiReact (status, emoji) {
+    dispatch(emojiReact(status, emoji));
+  },
+
   onToggleHidden (status) {
     if (status.get('hidden')) {
       dispatch(revealStatus(status.get('id')));

app/javascript/mastodon/features/status/components/action_bar.jsx

@@ -1,6 +1,7 @@
 import PropTypes from 'prop-types';
 import { PureComponent } from 'react';
 
+import EmojiPickerDropdown from '../../compose/containers/emoji_picker_dropdown_container';
 import { defineMessages, injectIntl } from 'react-intl';
 
 import classNames from 'classnames';
@@ -84,6 +85,7 @@ class ActionBar extends PureComponent {
     onReblog: PropTypes.func.isRequired,
     onQuote: PropTypes.func,
     onFavourite: PropTypes.func.isRequired,
+    onEmojiReact: PropTypes.func.isRequired,
     onBookmark: PropTypes.func.isRequired,
     onDelete: PropTypes.func.isRequired,
     onEdit: PropTypes.func.isRequired,
@@ -206,6 +208,10 @@ class ActionBar extends PureComponent {
     navigator.clipboard.writeText(url);
   };
 
+  handleEmojiPick = (data) => {
+    this.props.onEmojiReact(this.props.status, data);
+  };
+
   render () {
     const { status, relationship, intl } = this.props;
     const { signedIn, permissions } = this.context.identity;
@@ -327,6 +333,7 @@ class ActionBar extends PureComponent {
         <div className='detailed-status__button'><IconButton className='star-icon' animate active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' iconComponent={status.get('favourited') ? StarIcon : StarBorderIcon} onClick={this.handleFavouriteClick} /></div>
         <div className='detailed-status__button'><IconButton disabled={!publicStatus} title={StatusActionBar.quoteTitle(intl, messages, publicStatus)} icon='format-quote' iconComponent={FormatQuoteIcon} onClick={this.handleQuoteClick} /></div>
         <div className='detailed-status__button'><IconButton className='bookmark-icon' disabled={!signedIn} active={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' iconComponent={status.get('bookmarked') ? BookmarkIcon : BookmarkBorderIcon} onClick={this.handleBookmarkClick} /></div>
+        <div className='detailed-status__button'><EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} /></div>
         <div className='detailed-status__action-bar-dropdown'>
           <DropdownMenuContainer icon='ellipsis-h' iconComponent={MoreHorizIcon} status={status} items={menu} direction='left' title={intl.formatMessage(messages.more)} />
         </div>

app/javascript/mastodon/features/status/components/detailed_status.jsx

@@ -6,6 +6,7 @@ import classNames from 'classnames';
 import { Link, withRouter } from 'react-router-dom';
 
 import ImmutablePropTypes from 'react-immutable-proptypes';
+import StatusEmojiReactionsBar from '../../../components/status_emoji_reactions_bar';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 
 import AlternateEmailIcon from '@/material-icons/400-24px/alternate_email.svg?react';
@@ -53,6 +54,8 @@ class DetailedStatus extends ImmutablePureComponent {
     onToggleMediaVisibility: PropTypes.func,
     onQuoteToggleMediaVisibility: PropTypes.func,
     ...WithRouterPropTypes,
+    onEmojiReact: PropTypes.func,
+    onUnEmojiReact: PropTypes.func,
   };
 
   state = {
@@ -171,6 +174,7 @@ class DetailedStatus extends ImmutablePureComponent {
     const reblogIcon = 'retweet';
     const reblogIconComponent = RepeatIcon;
     let favouriteLink = '';
+    let emojiReactionsLink = '';
     let edited = '';
 
     if (this.props.measureHeight) {
@@ -261,9 +265,14 @@ class DetailedStatus extends ImmutablePureComponent {
         return (<Card sensitive={status.get('sensitive')} onOpenMedia={this.props.onOpenMedia}
           card={status.get('card', null)} quote={quote} />);
       }
-
     }
     
+    let emojiReactionsBar = null;
+    if (status.get('emoji_reactions')) {
+      const emojiReactions = status.get('emoji_reactions');
+      emojiReactionsBar = <StatusEmojiReactionsBar emojiReactions={emojiReactions} status={status} onEmojiReact={this.props.onEmojiReact} onUnEmojiReact={this.props.onUnEmojiReact} />;
+    }
+
     if (status.get('application')) {
       applicationLink = <> · <a className='detailed-status__application' href={status.getIn(['application', 'website'])} target='_blank' rel='noopener noreferrer'>{status.getIn(['application', 'name'])}</a></>;
     }
@@ -318,6 +327,22 @@ class DetailedStatus extends ImmutablePureComponent {
       );
     }
 
+    if (this.context.router) {
+      emojiReactionsLink = (
+        <Link to={`/@${status.getIn(['account', 'acct'])}/${status.get('id')}/emoji_reactions`} className='detailed-status__link'>
+          <Icon id='smile-o' />
+          <FormattedMessage id='status.emoji' defaultMessage='Emoji' />
+        </Link>
+      );
+    } else {
+      emojiReactionsLink = (
+        <a href={`/interact/${status.get('id')}?type=emoji_reactions`} className='detailed-status__link' onClick={this.handleModalLink}>
+          <Icon id='smile-o' />
+          <FormattedMessage id='status.emoji' defaultMessage='Emoji' />
+        </a>
+      );
+    }
+
     if (status.get('edited_at')) {
       edited = (
         <>
@@ -355,10 +380,12 @@ class DetailedStatus extends ImmutablePureComponent {
 
           {expanded && hashtagBar}
 
+          {emojiReactionsBar}
+
           <div className='detailed-status__meta'>
             <a className='detailed-status__datetime' href={`/@${status.getIn(['account', 'acct'])}/${status.get('id')}`} target='_blank' rel='noopener noreferrer'>
               <FormattedDate value={new Date(status.get('created_at'))} hour12={false} year='numeric' month='short' day='2-digit' hour='2-digit' minute='2-digit' />
-            </a>{edited}{visibilityLink}{applicationLink}{reblogLink} · {favouriteLink}
+            </a>{edited}{visibilityLink}{applicationLink}{reblogLink} · {favouriteLink} · {emojiReactionsLink}
           </div>
         </div>
       </div>

app/javascript/mastodon/features/status/containers/detailed_status_container.js

@@ -17,6 +17,8 @@ import {
   unfavourite,
   pin,
   unpin,
+  emojiReact,
+  unEmojiReact,
 } from '../../../actions/interactions';
 import { openModal } from '../../../actions/modal';
 import { initMuteModal } from '../../../actions/mutes';
@@ -100,6 +102,14 @@ const mapDispatchToProps = (dispatch, { intl }) => ({
     }
   },
 
+  onEmojiReact (status, emoji) {
+    dispatch(emojiReact(status, emoji));
+  },
+
+  onUnEmojiReact (status, emoji) {
+    dispatch(unEmojiReact(status, emoji));
+  },
+
   onPin (status) {
     if (status.get('pinned')) {
       dispatch(unpin(status));

app/javascript/mastodon/features/status/index.jsx

@@ -41,6 +41,8 @@ import {
 import {
   favourite,
   unfavourite,
+  emojiReact,
+  unEmojiReact,
   bookmark,
   unbookmark,
   reblog,
@@ -279,6 +281,16 @@ class Status extends ImmutablePureComponent {
     }
   };
 
+  handleEmojiReact = (status, emoji) => {
+    const { dispatch } = this.props;
+    dispatch(emojiReact(status, emoji));
+  };
+
+  handleUnEmojiReact = (status, emoji) => {
+    const { dispatch } = this.props;
+    dispatch(unEmojiReact(status, emoji));
+  };
+
   handlePin = (status) => {
     if (status.get('pinned')) {
       this.props.dispatch(unpin(status));
@@ -749,6 +761,8 @@ class Status extends ImmutablePureComponent {
                   onToggleMediaVisibility={this.handleToggleMediaVisibility}
                   onToggleQuoteMediaVisibility={this.handleToggleQuoteMediaVisibility}
                   pictureInPicture={pictureInPicture}
+                  onEmojiReact={this.handleEmojiReact}
+                  onUnEmojiReact={this.handleUnEmojiReact}
                 />
 
                 <ActionBar
@@ -756,6 +770,7 @@ class Status extends ImmutablePureComponent {
                   status={status}
                   onReply={this.handleReplyClick}
                   onFavourite={this.handleFavouriteClick}
+                  onEmojiReact={this.handleEmojiReact}
                   onReblog={this.handleReblogClick}
                   onQuote={this.handleQuoteClick}
                   onBookmark={this.handleBookmarkClick}

app/javascript/mastodon/features/ui/index.jsx

@@ -45,6 +45,7 @@ import {
   Following,
   Reblogs,
   Favourites,
+  EmojiReactions,
   DirectTimeline,
   HashtagTimeline,
   Notifications,
@@ -214,6 +215,7 @@ class SwitchingColumnsArea extends PureComponent {
             <WrappedRoute path='/directory' component={Directory} content={children} />
             <WrappedRoute path={['/explore', '/search']} component={Explore} content={children} />
             <WrappedRoute path={['/publish', '/statuses/new']} component={Compose} content={children} />
+            <WrappedRoute path='/@:acct/:statusId/emoji_reactions' component={EmojiReactions} content={children} />
 
             <WrappedRoute path={['/@:acct', '/accounts/:id']} exact component={AccountTimeline} content={children} />
             <WrappedRoute path='/@:acct/tagged/:tagged?' exact component={AccountTimeline} content={children} />
@@ -224,6 +226,7 @@ class SwitchingColumnsArea extends PureComponent {
             <WrappedRoute path='/@:acct/:statusId' exact component={Status} content={children} />
             <WrappedRoute path='/@:acct/:statusId/reblogs' component={Reblogs} content={children} />
             <WrappedRoute path='/@:acct/:statusId/favourites' component={Favourites} content={children} />
+            <WrappedRoute path='/statuses/:statusId/emoji_reactions' component={EmojiReactions} content={children} />
 
             {/* Legacy routes, cannot be easily factored with other routes because they share a param name */}
             <WrappedRoute path='/timelines/tag/:id' component={HashtagTimeline} content={children} />

app/javascript/mastodon/features/ui/util/async-components.js

@@ -82,6 +82,10 @@ export function Favourites () {
   return import(/* webpackChunkName: "features/favourites" */'../../favourites');
 }
 
+export function EmojiReactions () {
+  return import(/* webpackChunkName: "features/favourites" */'../../emoji_reactions');
+}
+
 export function FollowRequests () {
   return import(/* webpackChunkName: "features/follow_requests" */'../../follow_requests');
 }

app/javascript/mastodon/locales/en.json

@@ -428,7 +428,8 @@
   "not_signed_in_indicator.not_signed_in": "You need to login to access this resource.",
   "notification.admin.report": "{name} reported {target}",
   "notification.admin.sign_up": "{name} signed up",
-  "notification.favourite": "{name} favorited your post",
+  "notification.emoji_reaction": "{name} reacted your post with emoji",
+  "notification.favourite": "{name} favourited your post",
   "notification.follow": "{name} followed you",
   "notification.follow_request": "{name} has requested to follow you",
   "notification.mention": "{name} mentioned you",

app/javascript/mastodon/locales/ja.json

@@ -428,6 +428,7 @@
   "not_signed_in_indicator.not_signed_in": "この機能を使うにはログインする必要があります。",
   "notification.admin.report": "{name}さんが{target}さんを通報しました",
   "notification.admin.sign_up": "{name}さんがサインアップしました",
+  "notification.emoji_reaction": "{name}さんがあなたの投稿に絵文字をつけました",
   "notification.favourite": "{name}さんがあなたのトゥートに╰( ^o^)╮-=ﾆ=一＝三★しました",
   "notification.follow": "{name}さんにフォローされました",
   "notification.follow_request": "{name}さんがあなたにフォローリクエストしました",

app/javascript/mastodon/reducers/notifications.js

@@ -52,6 +52,7 @@ const notificationToMap = notification => ImmutableMap({
   id: notification.id,
   type: notification.type,
   account: notification.account.id,
+  emoji_reaction: ImmutableMap(notification.emoji_reaction),
   created_at: notification.created_at,
   status: notification.status ? notification.status.id : null,
   report: notification.report ? fromJS(notification.report) : null,

app/javascript/mastodon/reducers/statuses.js

@@ -1,4 +1,4 @@
-import { Map as ImmutableMap, fromJS } from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
 
 import { STATUS_IMPORT, STATUSES_IMPORT } from '../actions/importer';
 import { normalizeStatusTranslation } from '../actions/importer/normalizer';
@@ -26,6 +26,7 @@ import {
   STATUS_TRANSLATE_UNDO,
   STATUS_FETCH_REQUEST,
   STATUS_FETCH_FAIL,
+  STATUS_EMOJI_REACTION_UPDATE,
   QUOTE_REVEAL,
   QUOTE_HIDE,
 } from '../actions/statuses';
@@ -65,6 +66,29 @@ const statusTranslateUndo = (state, id) => {
   });
 };
 
+const updateStatusEmojiReaction = (state, emoji_reaction, myId) => {
+  emoji_reaction.me = emoji_reaction.account_ids ? emoji_reaction.account_ids.indexOf(myId) >= 0 : false;
+
+  const status = state.get(emoji_reaction.status_id);
+  if (!status) return state;
+
+  let emoji_reactions = Array.from(status.get('emoji_reactions') || []);
+
+  if (emoji_reaction.count > 0) {
+    const old_emoji = emoji_reactions.find((er) => er.get('name') === emoji_reaction.name && (!er.get('domain') || er.get('domain') === emoji_reaction.domain));
+    if (old_emoji) {
+      const index = emoji_reactions.indexOf(old_emoji);
+      emoji_reactions[index] = old_emoji.merge({ account_ids: emoji_reaction.account_ids, count: emoji_reaction.count, me: emoji_reaction.me });
+    } else {
+      emoji_reactions.push(ImmutableMap(emoji_reaction));
+    }
+  } else {
+    emoji_reactions = emoji_reactions.filter((er) => er.get('name') !== emoji_reaction.name || er.get('domain') !== emoji_reaction.domain);
+  }
+
+  return state.setIn([emoji_reaction.status_id, 'emoji_reactions'], ImmutableList(emoji_reactions));
+};
+
 const initialState = ImmutableMap();
 
 export default function statuses(state = initialState, action) {
@@ -137,6 +161,8 @@ export default function statuses(state = initialState, action) {
     return statusTranslateSuccess(state, action.id, action.translation);
   case STATUS_TRANSLATE_UNDO:
     return statusTranslateUndo(state, action.id);
+  case STATUS_EMOJI_REACTION_UPDATE:
+    return updateStatusEmojiReaction(state, action.emoji_reaction, action.accountId);
   default:
     return state;
   }

app/javascript/mastodon/reducers/user_lists.js

@@ -1,5 +1,4 @@
 import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
-
 import {
   DIRECTORY_FETCH_REQUEST,
   DIRECTORY_FETCH_SUCCESS,
@@ -57,6 +56,7 @@ import {
   FAVOURITES_EXPAND_REQUEST,
   FAVOURITES_EXPAND_SUCCESS,
   FAVOURITES_EXPAND_FAIL,
+  EMOJI_REACTIONS_FETCH_SUCCESS,
 } from '../actions/interactions';
 import {
   MUTES_FETCH_REQUEST,
@@ -79,6 +79,7 @@ const initialState = ImmutableMap({
   following: initialListState,
   reblogged_by: initialListState,
   favourited_by: initialListState,
+  emoji_reactioned_by: initialListState,
   follow_requests: initialListState,
   blocks: initialListState,
   mutes: initialListState,
@@ -161,6 +162,8 @@ export default function userLists(state = initialState, action) {
     return state.setIn(['favourited_by', action.id, 'isLoading'], false);
   case notificationsUpdate.type:
     return action.payload.notification.type === 'follow_request' ? normalizeFollowRequest(state, action.payload.notification) : state;
+  case EMOJI_REACTIONS_FETCH_SUCCESS:
+    return state.setIn(['emoji_reactioned_by', action.id], ImmutableList(action.accounts));
   case FOLLOW_REQUESTS_FETCH_SUCCESS:
     return normalizeList(state, ['follow_requests'], action.accounts, action.next);
   case FOLLOW_REQUESTS_EXPAND_SUCCESS:

app/javascript/styles/mastodon/components.scss

@@ -1725,13 +1725,50 @@ body > [data-popper-placement] {
     color: $highlight-text-color;
   }
 }
+.status__emoji-reactions-bar {
+  display: flex;
+  flex-wrap: wrap;
+  // gap: 4px 8px;
+  margin: 8px 0 2px 0;
+
+  .emoji-reactions-bar__button {
+    background: $white;
+    border: 1px solid lighten($ui-base-color, 8%);
+    border-radius: 3px;
+    padding: 0 6px;
+    cursor: pointer;
+    display: flex;
+    justify-items: center;
+    align-items: center;
+    height: 20px;
+
+    &.toggled {
+      background-color: mix($white, $ui-highlight-color, 80%);
+      border-color: mix(lighten($ui-base-color, 8%), $ui-highlight-color, 80%);
+    }
+
+    .emoji {
+      display: block;
+      height: 16px;
+      img {
+        margin-top: 0;
+        margin-bottom: 0;
+      }
+    }
+    .count {
+      display: block;
+      margin: 0 2px;
+      color: $ui-secondary-color;
+    }
+  }
+}
 
 .status__action-bar {
   display: flex;
   justify-content: space-between;
   align-items: center;
   gap: 18px;
-  margin-top: 16px;
+  //margin-top: 16px;
 }
 
 .detailed-status__action-bar-dropdown {

app/lib/activitypub/activity.rb

@@ -37,7 +37,7 @@ class ActivityPub::Activity
         ActivityPub::Activity::Delete
       when 'Follow'
         ActivityPub::Activity::Follow
-      when 'Like'
+      when 'Like', 'EmojiReaction', 'EmojiReact'
         ActivityPub::Activity::Like
       when 'Block'
         ActivityPub::Activity::Block

app/lib/activitypub/activity/like.rb

@@ -2,13 +2,102 @@
 
 class ActivityPub::Activity::Like < ActivityPub::Activity
   def perform
-    original_status = status_from_uri(object_uri)
+    @original_status = status_from_uri(object_uri)
 
-    return if original_status.nil? || !original_status.account.local? || delete_arrived_first?(@json['id']) || @account.favourited?(original_status)
+    return if @original_status.nil? || !@original_status.account.local? || delete_arrived_first?(@json['id'])
 
-    favourite = original_status.favourites.create!(account: @account)
-
-    LocalNotificationWorker.perform_async(original_status.account_id, favourite.id, 'Favourite', 'favourite')
-    Trends.statuses.register(original_status)
+    if shortcode.nil?
+      process_favourite
+    else
+      process_emoji_reaction
+    end
   end
-end
+
+  private
+
+  def process_favourite
+    return if @account.favourited?(@original_status)
+
+    favourite = @original_status.favourites.create!(account: @account)
+
+    LocalNotificationWorker.perform_async(@original_status.account_id, favourite.id, 'Favourite', 'favourite')
+    Trends.statuses.register(@original_status)
+  end
+
+  def process_emoji_reaction
+    if emoji_tag.present?
+      return if emoji_tag['id'].blank? || emoji_tag['name'].blank? || emoji_tag['icon'].blank? || emoji_tag['icon']['url'].blank?
+
+      image_url = emoji_tag['icon']['url']
+      uri       = emoji_tag['id']
+      domain    = URI.split(uri)[2]
+
+      emoji = CustomEmoji.find_or_create_by!(shortcode: shortcode, domain: domain) do |emoji|
+        emoji.uri              = uri
+        emoji.image_remote_url = image_url
+      end
+    end
+
+    return if EmojiReaction.where(account: @account, status: @original_status).count >= EmojiReaction::EMOJI_REACTION_PER_ACCOUNT_LIMIT
+
+    reaction = @original_status.emoji_reactions.create!(account: @account, name: shortcode, custom_emoji: emoji, uri: @json['id'])
+    write_stream(reaction)
+
+    if @original_status.account.local?
+      NotifyService.new.call(@original_status.account, :emoji_reaction, reaction)
+      forward_for_emoji_reaction
+      relay_for_emoji_reaction
+    end
+  rescue Seahorse::Client::NetworkingError
+    nil
+  end
+
+  def forward_for_emoji_reaction
+    return unless @json['signature'].present?
+
+    ActivityPub::RawDistributionWorker.perform_async(Oj.dump(@json), @original_status.account.id, [@account.preferred_inbox_url])
+  end
+
+  def relay_for_emoji_reaction
+    return unless @json['signature'].present? && @original_status.public_visibility?
+
+    ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+      [Oj.dump(@json), @original_status.account.id, inbox_url]
+    end
+  end
+
+  def shortcode
+    return @shortcode if defined?(@shortcode)
+
+    @shortcode = begin
+      if @json['_misskey_reaction'] == '⭐'
+        nil
+      else
+        @json['content']&.delete(':')
+      end
+    end
+  end
+
+  def misskey_favourite?
+    misskey_shortcode = @json['_misskey_reaction']&.delete(':')
+
+    return misskey_shortcode == shortcode && misskey_shortcode == '⭐'
+  end
+
+  def emoji_tag
+    return @emoji_tag if defined?(@emoji_tag)
+
+    @emoji_tag = @json['tag'].is_a?(Array) ? @json['tag']&.first : @json['tag']
+  end
+
+  def write_stream(emoji_reaction)
+    emoji_group = @original_status.emoji_reactions_grouped_by_name
+                                  .find { |reaction_group| reaction_group['name'] == emoji_reaction.name && (!reaction_group.key?(:domain) || reaction_group['domain'] == emoji_reaction.custom_emoji&.domain) }
+    emoji_group['status_id'] = @original_status.id.to_s
+    FeedAnyJsonWorker.perform_async(render_emoji_reaction(emoji_group), @original_status.id, emoji_reaction.account_id)
+  end
+
+  def render_emoji_reaction(emoji_group)
+    @render_emoji_reaction ||= Oj.dump(event: :emoji_reaction, payload: emoji_group.to_json)
+  end
+end

app/lib/activitypub/activity/undo.rb

@@ -100,7 +100,7 @@ class ActivityPub::Activity::Undo < ActivityPub::Activity
     end
   end
 
-  def undo_like
+  def undo_like_original
     status = status_from_uri(target_uri)
 
     return if status.nil? || !status.account.local?
@@ -113,6 +113,75 @@ class ActivityPub::Activity::Undo < ActivityPub::Activity
     end
   end
 
+  def undo_like
+    @original_status = status_from_uri(target_uri)
+
+    return if @original_status.nil?
+
+    if shortcode.present?
+      emoji_tag = @object['tag'].is_a?(Array) ? @object['tag']&.first : @object['tag']
+
+      emoji = nil
+      if emoji_tag.present? && emoji_tag['id'].present?
+        domain = URI.split(emoji_tag['id'])[2]
+        domain = nil if domain == Rails.configuration.x.local_domain || domain == Rails.configuration.x.web_domain
+        emoji = CustomEmoji.find_by(shortcode: shortcode, domain: domain) if emoji_tag.present? && emoji_tag['id'].present?
+      end
+
+      emoji_reaction = @original_status.emoji_reactions.where(account: @account, name: shortcode, custom_emoji: emoji).first
+
+      if emoji_reaction
+        emoji_reaction.destroy
+        write_stream(emoji_reaction)
+      end
+    else
+      undo_like_original
+    end
+  end
+
+  def write_stream(emoji_reaction)
+    emoji_group = @original_status.emoji_reactions_grouped_by_name
+                                  .find { |reaction_group| reaction_group['name'] == emoji_reaction.name && (!reaction_group.key?(:domain) || reaction_group['domain'] == emoji_reaction.custom_emoji&.domain) }
+    if emoji_group
+      emoji_group['status_id'] = @original_status.id.to_s
+    else
+      # name: emoji_reaction.name, count: 0, domain: emoji_reaction.domain
+      emoji_group = { 'name' => emoji_reaction.name, 'count' => 0, 'account_ids' => [], 'status_id' => @original_status.id.to_s }
+      emoji_group['domain'] = emoji_reaction.custom_emoji.domain if emoji_reaction.custom_emoji
+    end
+    DeliveryEmojiReactionWorker.perform_async(render_emoji_reaction(emoji_group), @original_status.id, emoji_reaction.account_id) if Setting.streaming_emoji_reaction && (@original_status.local? || Setting.streaming_other_servers_emoji_reaction)
+  end
+
+  def render_emoji_reaction(emoji_group)
+    @render_emoji_reaction ||= Oj.dump(event: :emoji_reaction, payload: emoji_group.to_json)
+  end
+
+  def forward_for_undo_emoji_reaction
+    return unless @json['signature'].present?
+
+    ActivityPub::RawDistributionWorker.perform_async(Oj.dump(@json), @original_status.account.id, [@account.preferred_inbox_url])
+  end
+
+  def relay_for_undo_emoji_reaction
+    return unless @json['signature'].present? && @original_status.public_visibility?
+
+    ActivityPub::DeliveryWorker.push_bulk(Relay.enabled.pluck(:inbox_url)) do |inbox_url|
+      [Oj.dump(@json), @original_status.account.id, inbox_url]
+    end
+  end
+
+  def shortcode
+    return @shortcode if defined?(@shortcode)
+
+    @shortcode = begin
+      if @object['_misskey_reaction'] == '⭐'
+        nil
+      else
+        @object['content']&.delete(':')
+      end
+    end
+  end
+
   def undo_block
     target_account = account_from_uri(target_uri)
 

app/lib/activitypub/tag_manager.rb

@@ -45,8 +45,12 @@ class ActivityPub::TagManager
       account_status_url(target.account, target)
     when :emoji
       emoji_url(target)
+
     when :flag
       target.uri
+
+    when :emoji_reaction
+      emoji_reaction_url(target)
     end
   end
 

app/lib/inline_renderer.rb

@@ -14,6 +14,8 @@ class InlineRenderer
       preload_associations_for_status
     when :notification
       serializer = REST::NotificationSerializer
+    when :emoji_reaction
+      serializer = REST::EmojiReactionSerializer
     when :conversation
       serializer = REST::ConversationSerializer
     when :announcement

app/lib/potential_friendship_tracker.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class PotentialFriendshipTracker
+  EXPIRE_AFTER = 90.days.seconds
+  MAX_ITEMS    = 80
+
+  WEIGHTS = {
+    reply: 1,
+    emoji_reaction: 2,
+    favourite: 10,
+    reblog: 20,
+  }.freeze
+
+  class << self
+    include Redisable
+
+    def record(account_id, target_account_id, action)
+      return if account_id == target_account_id
+
+      key    = "interactions:#{account_id}"
+      weight = WEIGHTS[action]
+
+      redis.zincrby(key, weight, target_account_id)
+      redis.zremrangebyrank(key, 0, -MAX_ITEMS)
+      redis.expire(key, EXPIRE_AFTER)
+    end
+
+    def remove(account_id, target_account_id)
+      redis.zrem("interactions:#{account_id}", target_account_id)
+    end
+  end
+end

app/models/concerns/account/associations.rb

@@ -13,6 +13,7 @@ module Account::Associations
     # Timelines
     has_many :statuses, inverse_of: :account, dependent: :destroy
     has_many :favourites, inverse_of: :account, dependent: :destroy
+    has_many :emoji_reactions, inverse_of: :account, dependent: :destroy
     has_many :bookmarks, inverse_of: :account, dependent: :destroy
     has_many :mentions, inverse_of: :account, dependent: :destroy
     has_many :notifications, inverse_of: :account, dependent: :destroy

app/models/custom_emoji.rb

@@ -28,15 +28,16 @@ class CustomEmoji < ApplicationRecord
 
   SHORTCODE_RE_FRAGMENT = '[a-zA-Z0-9_]{2,}'
 
-  SCAN_RE = /(?<=[^[:alnum:]:]|\n|^)
-    :(#{SHORTCODE_RE_FRAGMENT}):
-    (?=[^[:alnum:]:]|$)/x
+  SCAN_RE = /:(#{SHORTCODE_RE_FRAGMENT}):/x
   SHORTCODE_ONLY_RE = /\A#{SHORTCODE_RE_FRAGMENT}\z/
 
   IMAGE_MIME_TYPES = %w(image/png image/gif image/webp).freeze
 
   belongs_to :category, class_name: 'CustomEmojiCategory', optional: true
 
+  has_one :local_counterpart, -> { where(domain: nil) }, class_name: 'CustomEmoji', primary_key: :shortcode, foreign_key: :shortcode
+  has_many :emoji_reactions, inverse_of: :custom_emoji, dependent: :destroy
+
   has_one :local_counterpart, -> { where(domain: nil) }, class_name: 'CustomEmoji', primary_key: :shortcode, foreign_key: :shortcode, inverse_of: false, dependent: nil
 
   has_attached_file :image, styles: { static: { format: 'png', convert_options: '-coalesce +profile "!icc,*" +set date:modify +set date:create +set date:timestamp' } }, validate_media_type: false

app/models/emoji_reaction.rb

@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: emoji_reactions
+#
+#  id              :bigint(8)        not null, primary key
+#  account_id      :bigint(8)        not null
+#  status_id       :bigint(8)        not null
+#  name            :string           default(""), not null
+#  custom_emoji_id :bigint(8)
+#  uri             :string
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#
+
+class EmojiReaction < ApplicationRecord
+  include Paginable
+
+  EMOJI_REACTION_LIMIT = 32767
+  EMOJI_REACTION_PER_ACCOUNT_LIMIT = 5
+
+  update_index('statuses', :status)
+
+  belongs_to :account,       inverse_of: :emoji_reactions
+  belongs_to :status,        inverse_of: :emoji_reactions
+  belongs_to :custom_emoji,  optional: true
+
+  has_one :notification, as: :activity, dependent: :destroy
+
+  after_create :refresh_cache
+  after_destroy :refresh_cache
+  after_destroy :invalidate_cleanup_info
+
+  private
+
+  def refresh_cache
+    status&.refresh_emoji_reactions_grouped_by_name!
+  end
+
+  def invalidate_cleanup_info
+    return unless status&.account_id == account_id && account.local?
+
+    account.statuses_cleanup_policy&.invalidate_last_inspected(status, :unfav)
+  end
+
+  def paginate_by_max_id(limit, max_id = nil, since_id = nil)
+    query = order(arel_table[:id].desc).limit(limit)
+    query = query.where(arel_table[:id].lt(max_id)) if max_id.present?
+    query = query.where(arel_table[:id].gt(since_id)) if since_id.present?
+    query
+  end
+end

app/models/notification.rb

@@ -25,6 +25,7 @@ class Notification < ApplicationRecord
     'Follow' => :follow,
     'FollowRequest' => :follow_request,
     'Favourite' => :favourite,
+    'EmojiReaction' => :emoji_reaction,
     'Poll' => :poll,
   }.freeze
 
@@ -35,6 +36,7 @@ class Notification < ApplicationRecord
     follow
     follow_request
     favourite
+    emoji_reaction
     poll
     update
     admin.sign_up
@@ -46,6 +48,7 @@ class Notification < ApplicationRecord
     reblog: [status: :reblog],
     mention: [mention: :status],
     favourite: [favourite: :status],
+    emoji_reaction: [emoji_reaction: :status],
     poll: [poll: :status],
     update: :status,
     'admin.report': [report: :target_account],
@@ -61,6 +64,8 @@ class Notification < ApplicationRecord
     belongs_to :follow, inverse_of: :notification
     belongs_to :follow_request, inverse_of: :notification
     belongs_to :favourite, inverse_of: :notification
+    belongs_to :emoji_reaction, inverse_of: :notification
+
     belongs_to :poll, inverse_of: false
     belongs_to :report, inverse_of: false
   end
@@ -81,6 +86,8 @@ class Notification < ApplicationRecord
       status&.reblog
     when :favourite
       favourite&.status
+    when :emoji_reaction
+      emoji_reaction&.status
     when :mention
       mention&.status
     when :poll
@@ -130,6 +137,8 @@ class Notification < ApplicationRecord
           notification.status.reblog = cached_status
         when :favourite
           notification.favourite.status = cached_status
+        when :emoji_reaction
+          notification.emoji_reaction.status = cached_status
         when :mention
           notification.mention.status = cached_status
         when :poll
@@ -150,7 +159,7 @@ class Notification < ApplicationRecord
     return unless new_record?
 
     case activity_type
-    when 'Status', 'Follow', 'Favourite', 'FollowRequest', 'Poll', 'Report'
+    when 'Status', 'Follow', 'Favourite', 'EmojiReaction', 'FollowRequest', 'Poll', 'Report'
       self.from_account_id = activity&.account_id
     when 'Mention'
       self.from_account_id = activity&.status&.account_id

app/models/status.rb

@@ -30,6 +30,8 @@
 #  ordered_media_attachment_ids :bigint(8)        is an Array
 #
 
+require 'ostruct'
+
 class Status < ApplicationRecord
   include Cacheable
   include Discard::Model
@@ -67,6 +69,7 @@ class Status < ApplicationRecord
   end
 
   has_many :favourites, inverse_of: :status, dependent: :destroy
+  has_many :emoji_reactions, inverse_of: :status, dependent: :destroy
   has_many :bookmarks, inverse_of: :status, dependent: :destroy
   has_many :reblogs, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblog, dependent: :destroy
   has_many :reblogged_by_accounts, through: :reblogs, class_name: 'Account', source: :account
@@ -323,6 +326,34 @@ class Status < ApplicationRecord
     update_status_stat!(key => [public_send(key) - 1, 0].max)
   end
 
+  def emoji_reactions_grouped_by_name(account = nil)
+    (Oj.load(status_stat&.emoji_reactions || '', mode: :strict) || []).tap do |emoji_reactions|
+      if account.present?
+        emoji_reactions.each do |emoji_reaction|
+          emoji_reaction['me'] = emoji_reaction['account_ids'].include?(account.id.to_s)
+          emoji_reaction['account_ids'] -= account.excluded_from_timeline_account_ids.map(&:to_s)
+          emoji_reaction['count'] = emoji_reaction['account_ids'].size
+        end
+      end
+    end
+  end
+
+  def generate_emoji_reactions_grouped_by_name
+    records = emoji_reactions.group(:name).order(Arel.sql('MIN(created_at) ASC')).select('name, min(custom_emoji_id) as custom_emoji_id, count(*) as count, array_agg(account_id::text order by created_at) as account_ids')
+    Oj.dump(ActiveModelSerializers::SerializableResource.new(records, each_serializer: REST::EmojiReactionsGroupedByNameSerializer, scope: nil, scope_name: :current_user))
+  end
+
+  def refresh_emoji_reactions_grouped_by_name!
+    generate_emoji_reactions_grouped_by_name.tap do |emoji_reactions|
+      update_status_stat!(emoji_reactions: emoji_reactions)
+    end
+  end
+
+  def generate_emoji_reactions_grouped_by_account
+    # TODO for serializer
+    EmojiReaction.where(status_id: id).group_by(&:account)
+  end
+
   def trendable?
     if attributes['trendable'].nil?
       account.trendable?
@@ -364,6 +395,10 @@ class Status < ApplicationRecord
       StatusPin.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |p, h| h[p.status_id] = true }
     end
 
+    def emoji_reactions_map(status_ids, account_id)
+      EmojiReaction.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |e, h| h[e.status_id] = true }
+    end
+
     def reload_stale_associations!(cached_items)
       account_ids = []
 

app/models/status_emoji_reactions_grouped_by_account_object.rb

@@ -0,0 +1,14 @@
+class StatusEmojiReactionsGroupedByAccountObject
+  def initialize(account, emoji_reactions)
+    @account = account
+    @emoji_reactions = emoji_reactions
+  end
+
+  def read_attribute_for_serialization(_)
+    REST::EmojiReactedBySlimSerializer
+  end
+
+  def model_name
+    'EmojiReaction'
+  end
+end

app/models/status_stat.rb

@@ -11,6 +11,7 @@
 #  favourites_count :bigint(8)        default(0), not null
 #  created_at       :datetime         not null
 #  updated_at       :datetime         not null
+#  emoji_reactions  :string
 #
 
 class StatusStat < ApplicationRecord
@@ -27,4 +28,14 @@ class StatusStat < ApplicationRecord
   def favourites_count
     [attributes['favourites_count'], 0].max
   end
+
+  def emoji_reactions
+    attributes['emoji_reactions'] || ''
+  end
+
+  private
+
+  def reset_parent_cache
+    Rails.cache.delete("statuses/#{status_id}")
+  end
 end

app/policies/status_policy.rb

@@ -27,6 +27,10 @@ class StatusPolicy < ApplicationPolicy
     show? && !blocking_author?
   end
 
+  def emoji_reaction?
+    show? && !blocking_author?
+  end
+
   def destroy?
     owned?
   end

app/presenters/status_relationships_presenter.rb

@@ -4,16 +4,17 @@ class StatusRelationshipsPresenter
   PINNABLE_VISIBILITIES = %w(public unlisted private).freeze
 
   attr_reader :reblogs_map, :favourites_map, :mutes_map, :pins_map,
-              :bookmarks_map, :filters_map, :attributes_map
+              :bookmarks_map, :filters_map, :attributes_map, :emoji_reactions_map
 
   def initialize(statuses, current_account_id = nil, **options)
     if current_account_id.nil?
-      @reblogs_map    = {}
-      @favourites_map = {}
-      @bookmarks_map  = {}
-      @mutes_map      = {}
-      @pins_map       = {}
-      @filters_map    = {}
+      @reblogs_map         = {}
+      @favourites_map      = {}
+      @bookmarks_map       = {}
+      @mutes_map           = {}
+      @pins_map            = {}
+      @filters_map         = {}
+      @emoji_reactions_map = {}
     else
       statuses            = statuses.compact
       status_ids          = statuses.flat_map { |s| [s.id, s.reblog_of_id] }.uniq.compact
@@ -27,6 +28,7 @@ class StatusRelationshipsPresenter
       @mutes_map       = Status.mutes_map(conversation_ids, current_account_id).merge(options[:mutes_map] || {})
       @pins_map        = Status.pins_map(pinnable_status_ids, current_account_id).merge(options[:pins_map] || {})
       @attributes_map  = options[:attributes_map] || {}
+      @emoji_reactions_map = Status.emoji_reactions_map(status_ids, current_account_id).merge(options[:emoji_reactions_map] || {})
     end
   end
 

app/serializers/activitypub/emoji_reaction_serializer.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+class ActivityPub::EmojiReactionSerializer < ActivityPub::Serializer
+  attributes :id, :type, :actor, :content
+  attribute :virtual_object, key: :object
+
+  has_many :virtual_tags, key: :tag, unless: -> { object.custom_emoji.nil? }
+
+  def id
+    [ActivityPub::TagManager.instance.uri_for(object.account), '#likes/', object.id].join
+  end
+
+  def type
+    'EmojiReact'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def virtual_object
+    ActivityPub::TagManager.instance.uri_for(object.status)
+  end
+
+  def content
+    object.custom_emoji.nil? ? object.name : ":#{object.name}:"
+  end
+
+  def virtual_tags
+    [object.custom_emoji]
+  end
+
+  class CustomEmojiSerializer < ActivityPub::EmojiSerializer
+  end
+end

app/serializers/activitypub/undo_emoji_reaction_serializer.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class ActivityPub::UndoEmojiReactionSerializer < ActivityPub::Serializer
+  attributes :id, :type, :actor, :content
+
+  has_one :object, serializer: ActivityPub::EmojiReactionSerializer
+
+  def id
+    [ActivityPub::TagManager.instance.uri_for(object.account), '#emoji_reactions/', object.id, '/undo'].join
+  end
+
+  def type
+    'Undo'
+  end
+
+  def actor
+    ActivityPub::TagManager.instance.uri_for(object.account)
+  end
+
+  def content
+    object.custom_emoji.nil? ? object.name : ":#{object.name}:"
+  end
+end

app/serializers/rest/custom_emoji_serializer.rb

@@ -3,11 +3,11 @@
 class REST::CustomEmojiSerializer < ActiveModel::Serializer
   include RoutingHelper
 
-  # Please update `app/javascript/mastodon/api_types/custom_emoji.ts` when making changes to the attributes
-
   attributes :shortcode, :url, :static_url, :visible_in_picker
 
   attribute :category, if: :category_loaded?
+  attribute :width, if: :width?
+  attribute :height, if: :height?
 
   def url
     full_asset_url(object.image.url)
@@ -24,4 +24,20 @@ class REST::CustomEmojiSerializer < ActiveModel::Serializer
   def category_loaded?
     object.association(:category).loaded? && object.category.present?
   end
+
+  def width?
+    object.respond_to?(:image_width) || object.respond_to?(:width)
+  end
+
+  def height?
+    object.respond_to?(:image_height) || object.respond_to?(:height)
+  end
+
+  def width
+    object.respond_to?(:image_width) ? object.image_width : object.width
+  end
+
+  def height
+    object.respond_to?(:image_height) ? object.image_height : object.height
+  end
 end

app/serializers/rest/emoji_reacted_by_slim_reaction_serializer.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class REST::EmojiReactedBySlimReactionSerializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attributes :name
+
+  attribute :url, if: :custom_emoji?
+  attribute :static_url, if: :custom_emoji?
+  attribute :domain, if: :custom_emoji?
+
+  def url
+    full_asset_url(object.custom_emoji.image.url)
+  end
+
+  def static_url
+    full_asset_url(object.custom_emoji.image.url(:static))
+  end
+
+  def domain
+    object.custom_emoji.domain
+  end
+
+  def custom_emoji?
+    object.custom_emoji.present?
+  end
+end

app/serializers/rest/emoji_reacted_by_slim_serializer.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class REST::EmojiReactedBySlimSerializer < ActiveModel::Serializer
+
+  belongs_to :account, serializer: REST::AccountSerializer
+  has_many :emoji_reactions, serializer: REST::EmojiReactedBySlimReactionSerializer
+
+  def attributes
+    { account => emoji_reactions }
+  end
+
+  private
+
+  def account
+    object.first
+  end
+
+  def emoji_reactions
+    object.last
+  end
+end

app/serializers/rest/emoji_reaction_account_serializer.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class REST::EmojiReactionAccountSerializer < ActiveModel::Serializer
+  include RoutingHelper
+  include FormattingHelper
+
+  attributes :id, :name
+
+  attribute :url, if: :custom_emoji?
+  attribute :static_url, if: :custom_emoji?
+  attribute :domain, if: :custom_emoji?
+
+  belongs_to :account, serializer: REST::AccountSerializer
+
+  def id
+    object.id.to_s
+  end
+
+  def url
+    full_asset_url(object.custom_emoji.image.url)
+  end
+
+  def static_url
+    full_asset_url(object.custom_emoji.image.url(:static))
+  end
+
+  def domain
+    object.custom_emoji.domain
+  end
+
+  def custom_emoji?
+    object.custom_emoji.present?
+  end
+end

app/serializers/rest/emoji_reaction_serializer.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class REST::EmojiReactionSerializer < ActiveModel::Serializer
+  attributes :name
+
+  attribute :count, if: :count?
+  attribute :url, if: :custom_emoji?
+  attribute :static_url, if: :custom_emoji?
+  attribute :domain, if: :custom_emoji?
+  attribute :account_ids, if: :account_ids?
+
+  def count?
+    object.respond_to?(:count)
+  end
+
+  def custom_emoji?
+    object.respond_to?(:url)
+  end
+
+  def account_ids?
+    object.respond_to?(:account_ids)
+  end
+end

app/serializers/rest/emoji_reactions_grouped_by_name_serializer.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+class REST::EmojiReactionsGroupedByNameSerializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attributes :name, :count
+
+  attribute :me, if: :current_user?
+  attribute :url, if: :custom_emoji?
+  attribute :static_url, if: :custom_emoji?
+  attribute :domain, if: :custom_emoji?
+  attribute :account_ids, if: :account_ids?
+
+  def current_user?
+    !current_user.nil?
+  end
+
+  def custom_emoji?
+    object.custom_emoji.present?
+  end
+
+  def account_ids?
+    object.respond_to?(:account_ids)
+  end
+
+  def url
+    full_asset_url(object.custom_emoji.image.url)
+  end
+
+  def static_url
+    full_asset_url(object.custom_emoji.image.url(:static))
+  end
+
+  def domain
+    object.custom_emoji.domain
+  end
+end

app/serializers/rest/instance_serializer.rb

@@ -11,7 +11,7 @@ class REST::InstanceSerializer < ActiveModel::Serializer
 
   attributes :domain, :title, :version, :source_url, :description,
              :usage, :thumbnail, :languages, :configuration,
-             :registrations, :feature_quote
+             :registrations, :feature_quote, :fedibird_capabilities
 
   has_one :contact, serializer: ContactSerializer
   has_many :rules, serializer: REST::RuleSerializer
@@ -81,6 +81,11 @@ class REST::InstanceSerializer < ActiveModel::Serializer
       translation: {
         enabled: TranslationService.configured?,
       },
+
+      emoji_reactions: {
+        max_reactions: EmojiReaction::EMOJI_REACTION_LIMIT,
+        max_reactions_per_account: EmojiReaction::EMOJI_REACTION_PER_ACCOUNT_LIMIT,
+      },
     }
   end
 
@@ -97,6 +102,17 @@ class REST::InstanceSerializer < ActiveModel::Serializer
     true
   end
 
+  # for third party apps
+  def fedibird_capabilities
+    capabilities = [
+      :emoji_reaction,
+    ]
+
+    capabilities << :profile_search unless Chewy.enabled?
+
+    capabilities
+  end
+
   private
 
   def registrations_enabled?

app/serializers/rest/notification_serializer.rb

@@ -6,16 +6,21 @@ class REST::NotificationSerializer < ActiveModel::Serializer
   belongs_to :from_account, key: :account, serializer: REST::AccountSerializer
   belongs_to :target_status, key: :status, if: :status_type?, serializer: REST::StatusSerializer
   belongs_to :report, if: :report_type?, serializer: REST::ReportSerializer
+  belongs_to :emoji_reaction, if: :emoji_reaction_type?, serializer: REST::NotifyEmojiReactionSerializer
 
   def id
     object.id.to_s
   end
 
   def status_type?
-    [:favourite, :reblog, :status, :mention, :poll, :update].include?(object.type)
+    [:favourite, :emoji_reaction, :reblog, :status, :mention, :poll, :update].include?(object.type)
   end
 
   def report_type?
     object.type == :'admin.report'
   end
+
+  def emoji_reaction_type?
+    object.type == :emoji_reaction
+  end
 end

app/serializers/rest/notify_emoji_reaction_serializer.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+class REST::NotifyEmojiReactionSerializer < ActiveModel::Serializer
+  include RoutingHelper
+  
+  attributes :name
+
+  attribute :count, if: :count?
+  attribute :url, if: :custom_emoji?
+  attribute :static_url, if: :custom_emoji?
+  attribute :domain, if: :custom_emoji?
+
+  def count?
+    object.respond_to?(:count)
+  end
+
+  def custom_emoji?
+    object.respond_to?(:custom_emoji) && object.custom_emoji.present?
+  end
+
+  def account_ids?
+    object.respond_to?(:account_ids)
+  end
+
+  def url
+    full_asset_url(object.custom_emoji.image.url)
+  end
+
+  def static_url
+    full_asset_url(object.custom_emoji.image.url(:static))
+  end
+
+  def domain
+    object.custom_emoji.domain
+  end
+end

app/serializers/rest/status_serializer.rb

@@ -6,7 +6,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
   attributes :id, :created_at, :in_reply_to_id, :in_reply_to_account_id,
              :sensitive, :spoiler_text, :visibility, :language,
              :uri, :url, :replies_count, :reblogs_count,
-             :favourites_count, :edited_at
+             :favourites_count, :emoji_reactions, :edited_at
 
   attribute :favourited, if: :current_user?
   attribute :reblogged, if: :current_user?
@@ -103,6 +103,10 @@ class REST::StatusSerializer < ActiveModel::Serializer
     end
   end
 
+  def emoji_reactions
+    object.emoji_reactions_grouped_by_name(current_user&.account)
+  end
+
   def reblogged
     if relationships
       relationships.reblogs_map[object.id] || false

app/serializers/rest/v1/instance_serializer.rb

@@ -6,7 +6,7 @@ class REST::V1::InstanceSerializer < ActiveModel::Serializer
   attributes :uri, :title, :short_description, :description, :email,
              :version, :urls, :stats, :thumbnail,
              :languages, :registrations, :approval_required, :invites_enabled,
-             :configuration
+             :configuration, :fedibird_capabilities
 
   has_one :contact_account, serializer: REST::AccountSerializer
 
@@ -83,6 +83,11 @@ class REST::V1::InstanceSerializer < ActiveModel::Serializer
         min_expiration: PollValidator::MIN_EXPIRATION,
         max_expiration: PollValidator::MAX_EXPIRATION,
       },
+
+      emoji_reactions: {
+        max_reactions: EmojiReaction::EMOJI_REACTION_LIMIT,
+        max_reactions_per_account: EmojiReaction::EMOJI_REACTION_PER_ACCOUNT_LIMIT,
+      },
     }
   end
 
@@ -98,6 +103,17 @@ class REST::V1::InstanceSerializer < ActiveModel::Serializer
     UserRole.everyone.can?(:invite_users)
   end
 
+  # for third party apps
+  def fedibird_capabilities
+    capabilities = [
+      :emoji_reaction,
+    ]
+
+    capabilities << :profile_search unless Chewy.enabled?
+
+    capabilities
+  end
+
   private
 
   def instance_presenter

app/services/concerns/account_limitable.rb

@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module AccountLimitable
+  def scope_status(status)
+    case status.visibility.to_sym
+    when :public, :unlisted
+      #scope_local.merge(scope_list_following_account(status.account))
+      scope_local
+    when :private
+      scope_account_local_followers(status.account)
+    when :limited
+      scope_status_mentioned(status)
+    else
+      scope_status_mentioned(status)
+    end
+  end
+
+  def scope_local
+    Account.local.select(:id)
+  end
+
+  def scope_account_local_followers(account)
+    account.followers_for_local_distribution.select(:id).reorder(nil)
+  end
+
+  def scope_status_mentioned(status)
+    status.active_mentions.where.joins(:account).merge(Account.local).select('account_id AS id').reorder(nil)
+  end
+
+  # TODO: not work
+  def scope_list_following_account(account)
+    account.lists_for_local_distribution.select(:id).reorder(nil)
+  end
+
+  def scope_tag_following_account(status)
+    TagFollow.where(tag_id: @status.tags.map(&:id)).select('account_id AS id').reorder(nil)
+  end
+end

app/services/delete_account_service.rb

@@ -147,6 +147,7 @@ class DeleteAccountService < BaseService
     purge_polls!
     purge_generated_notifications!
     purge_favourites!
+    purge_emoji_reactions!
     purge_bookmarks!
     purge_feeds!
     purge_other_associations!
@@ -193,6 +194,16 @@ class DeleteAccountService < BaseService
     end
   end
 
+  def purge_emoji_reactions!
+    @account.emoji_reactions.in_batches do |reactions|
+      reactions.each do |reaction|
+        reaction.status.refresh_emoji_reactions_grouped_by_name
+      end
+      Chewy.strategy.current.update(StatusesIndex, reactions.pluck(:status_id)) if Chewy.enabled?
+      reactions.delete_all
+    end
+  end
+
   def purge_bookmarks!
     @account.bookmarks.in_batches do |bookmarks|
       Chewy.strategy.current.update(StatusesIndex, bookmarks.pluck(:status_id)) if Chewy.enabled?

app/services/emoji_react_service.rb

@@ -0,0 +1,78 @@
+# frozen_string_literal: true
+
+class EmojiReactService < BaseService
+  include Authorization
+  include Payloadable
+  include Redisable
+
+  # React a status with emoji and notify remote user
+  # @param [Account] account
+  # @param [Status] status
+  # @param [string] name
+  # @return [Favourite]
+  def call(account, status, name)
+    authorize_with account, status, :emoji_reaction?
+
+    emoji_reaction = EmojiReaction.find_by(account: account, status: status, name: name)
+
+    return emoji_reaction unless emoji_reaction.nil?
+
+    shortcode, domain = name.split('@')
+
+    custom_emoji = CustomEmoji.find_by(shortcode: shortcode, domain: domain)
+
+    emoji_reaction = EmojiReaction.create!(account: account, status: status, name: shortcode, custom_emoji: custom_emoji)
+
+    Trends.statuses.register(status)
+
+    create_notification(emoji_reaction)
+    notify_to_followers(emoji_reaction)
+    bump_potential_friendship(account, status)
+    write_stream(emoji_reaction)
+
+    emoji_reaction
+  end
+
+  private
+
+  def create_notification(emoji_reaction)
+    status = emoji_reaction.status
+
+    if status.account.local?
+      LocalNotificationWorker.perform_async(status.account_id, emoji_reaction.id, 'EmojiReaction', 'emoji_reaction')
+    elsif status.account.activitypub?
+      ActivityPub::DeliveryWorker.perform_async(build_json(emoji_reaction), emoji_reaction.account_id, status.account.inbox_url)
+    end
+  end
+
+  def notify_to_followers(emoji_reaction)
+    status = emoji_reaction.status
+
+    return unless status.account.local?
+
+    ActivityPub::RawDistributionWorker.perform_async(build_json(emoji_reaction), status.account_id)
+  end
+
+  def write_stream(emoji_reaction)
+    emoji_group = emoji_reaction.status.emoji_reactions_grouped_by_name
+                                .find { |reaction_group| reaction_group['name'] == emoji_reaction.name && (!reaction_group.key?(:domain) || reaction_group['domain'] == emoji_reaction.custom_emoji&.domain) }
+    emoji_group['status_id'] = emoji_reaction.status_id.to_s
+    FeedAnyJsonWorker.perform_async(render_emoji_reaction(emoji_group), emoji_reaction.status_id, emoji_reaction.account_id)
+  end
+
+  def bump_potential_friendship(account, status)
+    ActivityTracker.increment('activity:interactions')
+    return if account.following?(status.account_id)
+
+    PotentialFriendshipTracker.record(account.id, status.account_id, :emoji_reaction)
+  end
+
+  def build_json(emoji_reaction)
+    Oj.dump(serialize_payload(emoji_reaction, ActivityPub::EmojiReactionSerializer))
+  end
+
+  def render_emoji_reaction(emoji_group)
+    # @rendered_emoji_reaction ||= InlineRenderer.render(HashObject.new(emoji_group), nil, :emoji_reaction)
+    @render_emoji_reaction ||= Oj.dump(event: :emoji_reaction, payload: emoji_group.to_json)
+  end
+end

app/services/un_emoji_react_service.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+class UnEmojiReactService < BaseService
+  include Redisable
+  include Payloadable
+
+  def call(account_id, status_id, emoji_reaction = nil)
+    @account_id = account_id
+    @account    = Account.find(account_id)
+    @status     = Status.find(status_id)
+
+    p '==================================== DEBUG'
+    p emoji_reaction
+
+    if emoji_reaction
+      emoji_reaction.destroy!
+      create_notification(emoji_reaction) if !@account.local? && @account.activitypub?
+      notify_to_followers(emoji_reaction) if @account.local?
+      write_stream(emoji_reaction)
+    else
+      bulk(@account, @status)
+    end
+    emoji_reaction
+  end
+
+  private
+
+  def bulk(account, status)
+    EmojiReaction.where(account: account).where(status: status).each do |emoji_reaction|
+      call(account.id, status.id, emoji_reaction)
+    end
+  end
+
+  def create_notification(emoji_reaction)
+    ActivityPub::DeliveryWorker.perform_async(build_json(emoji_reaction), @account_id, @account.inbox_url)
+  end
+
+  def notify_to_followers(emoji_reaction)
+    ActivityPub::RawDistributionWorker.perform_async(build_json(emoji_reaction), @account_id)
+  end
+
+  def write_stream(emoji_reaction)
+    emoji_group = @status.emoji_reactions_grouped_by_name
+                                .find { |reaction_group| reaction_group['name'] == emoji_reaction.name && (!reaction_group.key?(:domain) || reaction_group['domain'] == emoji_reaction.custom_emoji&.domain) }
+    if emoji_group
+      emoji_group['status_id'] = @status.id.to_s
+    else
+      # name: emoji_reaction.name, count: 0, domain: emoji_reaction.domain
+      emoji_group = { 'name' => emoji_reaction.name, 'count' => 0, 'account_ids' => [], 'status_id' => @status.id.to_s }
+      emoji_group['domain'] = emoji_reaction.custom_emoji.domain if emoji_reaction.custom_emoji
+    end
+    FeedAnyJsonWorker.perform_async(render_emoji_reaction(emoji_group), @status.id, @account_id)
+  end
+
+  def build_json(emoji_reaction)
+    Oj.dump(serialize_payload(emoji_reaction, ActivityPub::UndoEmojiReactionSerializer))
+  end
+
+  def render_emoji_reaction(emoji_group)
+    # @rendered_emoji_reaction ||= InlineRenderer.render(emoji_group, nil, :emoji_reaction)
+    Oj.dump(event: :emoji_reaction, payload: emoji_group.to_json)
+  end
+end

app/workers/feed_any_json_worker.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+class FeedAnyJsonWorker
+  include Sidekiq::Worker
+  include Redisable
+  include Lockable
+  include AccountLimitable
+
+  def perform(payload_json, status_id, my_account_id = nil)
+    p '========================================= DEBUG AAA'
+    redis.publish("timeline:#{my_account_id}", payload_json) if my_account_id.present?
+    p '========================================= DEBUG AA'
+    p status_id
+    p status_id.to_i
+
+    status = Status.find(status_id.to_i)
+    p '========================================= DEBUG AAAAAAAA'
+    p status.present?
+
+    if status.present?
+      p '========================================= DEBUG A'
+      p scope_status(status)
+      p '========================================= DEBUG C'
+      scope_status(status).find_each do |account|
+        p '========================================= DEBUG D'
+        p redis.exists?("subscribed:timeline:#{account.id}")
+        redis.publish("timeline:#{account.id}", payload_json) if redis.exists?("subscribed:timeline:#{account.id}")
+      end
+
+      if status.visibility.to_sym != :public && status.visibility.to_sym != :unlisted && status.account_id != my_account_id &&
+         redis.exists?("subscribed:timeline:#{status.account_id}")
+        redis.publish("timeline:#{status.account_id}", payload_json)
+      end
+    end
+
+    true
+  rescue ActiveRecord::RecordNotFound
+    true
+  end
+end

app/workers/un_emoji_react_worker.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class UnEmojiReactWorker
+  include Sidekiq::Worker
+
+  def perform(account_id, status_id, emoji = nil)
+    emoji_reaction = nil
+
+    if emoji
+      shortcode, domain = emoji.split('@')
+      emoji_reaction = EmojiReaction.where(account_id: account_id).where(status_id: status_id).where(name: shortcode)
+                                    .find { |reaction| domain == '' ? reaction.custom_emoji.nil? : reaction.custom_emoji&.domain == domain }
+    end
+
+    UnEmojiReactService.new.call(account_id.to_i, status_id.to_i, emoji_reaction)
+  rescue ActiveRecord::RecordNotFound
+    true
+  end
+end

config/locales/en.yml

@@ -1459,9 +1459,13 @@ en:
       sign_up:
         subject: "%{name} signed up"
     favourite:
-      body: 'Your post was favorited by %{name}:'
-      subject: "%{name} favorited your post"
-      title: New favorite
+      body: 'Your post was favourited by %{name}:'
+      subject: "%{name} favourited your post"
+      title: New favourite
+    emoji_reaction:
+      body: 'Your post was reacted with emoji by %{name}:'
+      subject: "%{name} reacted your post with emoji"
+      title: New emoji reaction
     follow:
       body: "%{name} is now following you!"
       subject: "%{name} is now following you"

config/locales/ja.yml

@@ -1436,6 +1436,10 @@ ja:
       body: "%{name}さんにお気に入り登録された、あなたのトゥートがあります:"
       subject: "%{name}さんにお気に入りに登録されました"
       title: 新たなお気に入り登録
+    emoji_reaction:
+      body: "%{name}さんに絵文字リアクションされた、あなたの投稿があります:"
+      subject: "%{name}さんに絵文字リアクションされました"
+      title: 新たな絵文字リアクション
     follow:
       body: "%{name}さんにフォローされています！"
       subject: "%{name}さんにフォローされています"

config/routes.rb

@@ -29,6 +29,7 @@ Rails.application.routes.draw do
     /lists/(*any)
     /notifications
     /favourites
+    /emoji_reactions
     /bookmarks
     /pinned
     /start/(*any)

config/routes/api.rb

@@ -10,6 +10,8 @@ namespace :api, format: false do
       scope module: :statuses do
         resources :reblogged_by, controller: :reblogged_by_accounts, only: :index
         resources :favourited_by, controller: :favourited_by_accounts, only: :index
+        resources :emoji_reactioned_by, controller: :emoji_reactioned_by_accounts, only: :index
+        resources :emoji_reactioned_by_slim, controller: :emoji_reactioned_by_accounts_slim, only: :index
         resource :reblog, only: :create
         post :unreblog, to: 'reblogs#destroy'
 
@@ -29,6 +31,9 @@ namespace :api, format: false do
         resource :source, only: :show
 
         post :translate, to: 'translations#create'
+
+        resources :emoji_reactions, only: [:create, :update, :destroy], constraints: { id: /[^\/]+/ }
+        post :emoji_unreaction, to: 'emoji_reactions#destroy'
       end
 
       member do

db/migrate/20230222232121_create_emoji_reactions.rb

@@ -0,0 +1,13 @@
+class CreateEmojiReactions < ActiveRecord::Migration[6.1]
+  def change
+    create_table :emoji_reactions do |t|
+      t.belongs_to :account, null: false, foreign_key: { on_delete: :cascade }
+      t.belongs_to :status, null: false, foreign_key: { on_delete: :cascade }
+      t.string :name, null: false, default: ''
+      t.belongs_to :custom_emoji, foreign_key: { on_delete: :cascade }
+      t.string :uri
+      t.datetime :created_at, null: false
+      t.datetime :updated_at, null: false
+    end
+  end
+end

db/migrate/20230223102416_add_emoji_reactions_to_status_stats.rb

@@ -0,0 +1,5 @@
+class AddEmojiReactionsToStatusStats < ActiveRecord::Migration[6.1]
+  def change
+    add_column :status_stats, :emoji_reactions, :string
+  end
+end

db/schema.rb

@@ -439,6 +439,19 @@ ActiveRecord::Schema[7.1].define(version: 2024_01_11_033014) do
     t.index ["domain"], name: "index_email_domain_blocks_on_domain", unique: true
   end
 
+  create_table "emoji_reactions", force: :cascade do |t|
+    t.bigint "account_id", null: false
+    t.bigint "status_id", null: false
+    t.string "name", default: "", null: false
+    t.bigint "custom_emoji_id"
+    t.string "uri"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["account_id"], name: "index_emoji_reactions_on_account_id"
+    t.index ["custom_emoji_id"], name: "index_emoji_reactions_on_custom_emoji_id"
+    t.index ["status_id"], name: "index_emoji_reactions_on_status_id"
+  end
+
   create_table "encrypted_messages", id: :bigint, default: -> { "timestamp_id('encrypted_messages'::text)" }, force: :cascade do |t|
     t.bigint "device_id"
     t.bigint "from_account_id"
@@ -967,6 +980,7 @@ ActiveRecord::Schema[7.1].define(version: 2024_01_11_033014) do
     t.bigint "favourites_count", default: 0, null: false
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
+    t.string "emoji_reactions"
     t.index ["status_id"], name: "index_status_stats_on_status_id", unique: true
   end
 
@@ -1226,6 +1240,9 @@ ActiveRecord::Schema[7.1].define(version: 2024_01_11_033014) do
   add_foreign_key "devices", "accounts", on_delete: :cascade
   add_foreign_key "devices", "oauth_access_tokens", column: "access_token_id", on_delete: :cascade
   add_foreign_key "email_domain_blocks", "email_domain_blocks", column: "parent_id", on_delete: :cascade
+  add_foreign_key "emoji_reactions", "accounts", on_delete: :cascade
+  add_foreign_key "emoji_reactions", "custom_emojis", on_delete: :cascade
+  add_foreign_key "emoji_reactions", "statuses", on_delete: :cascade
   add_foreign_key "encrypted_messages", "accounts", column: "from_account_id", on_delete: :cascade
   add_foreign_key "encrypted_messages", "devices", on_delete: :cascade
   add_foreign_key "favourites", "accounts", name: "fk_5eb6c2b873", on_delete: :cascade

lib/mastodon/cache_cli.rb

@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require_relative '../../config/boot'
+require_relative '../../config/environment'
+require_relative 'cli_helper'
+
+module Mastodon
+  class CacheCLI < Thor
+    include CLIHelper
+
+    def self.exit_on_failure?
+      true
+    end
+
+    desc 'clear', 'Clear out the cache storage'
+    def clear
+      Rails.cache.clear
+      say('OK', :green)
+    end
+
+    option :concurrency, type: :numeric, default: 5, aliases: [:c]
+    option :verbose, type: :boolean, aliases: [:v]
+    desc 'recount TYPE', 'Update hard-cached counters'
+    long_desc <<~LONG_DESC
+      Update hard-cached counters of TYPE by counting referenced
+      records from scratch. TYPE can be "accounts" or "statuses".
+
+      It may take a very long time to finish, depending on the
+      size of the database.
+    LONG_DESC
+    def recount(type)
+      case type
+      when 'accounts'
+        processed, = parallelize_with_progress(Account.local.includes(:account_stat)) do |account|
+          account_stat                 = account.account_stat
+          account_stat.following_count = account.active_relationships.count
+          account_stat.followers_count = account.passive_relationships.count
+          account_stat.statuses_count  = account.statuses.where.not(visibility: :direct).count
+
+          account_stat.save if account_stat.changed?
+        end
+      when 'statuses'
+        processed, = parallelize_with_progress(Status.includes(:status_stat)) do |status|
+          status_stat                  = status.status_stat
+          status_stat.replies_count    = status.replies.where.not(visibility: :direct).count
+          status_stat.reblogs_count    = status.reblogs.count
+          status_stat.favourites_count = status.favourites.count
+          status_stat.emoji_reactions  = status.generate_emoji_reactions_grouped_by_name
+
+          status_stat.save if status_stat.changed?
+        end
+      else
+        say("Unknown type: #{type}", :red)
+        exit(1)
+      end
+
+      say
+      say("OK, recounted #{processed} records", :green)
+    end
+  end
+end