Add mentioned users by status view

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

@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+class Api::V1::Statuses::MentionedAccountsController < Api::BaseController
+  include Authorization
+
+  before_action -> { authorize_if_got_token! :read, :'read:accounts' }
+  before_action :set_status
+  after_action :insert_pagination_headers
+
+  def index
+    cache_if_unauthenticated!
+    @accounts = load_accounts
+    render json: @accounts, each_serializer: REST::AccountSerializer
+  end
+
+  private
+
+  def load_accounts
+    scope = default_accounts
+    scope = scope.where.not(id: current_account.excluded_from_timeline_account_ids) unless current_account.nil?
+    scope.merge(paginated_mentioned_users).to_a
+  end
+
+  def default_accounts
+    Account
+      .without_suspended
+      .includes(:mentions, :account_stat)
+      .references(:mentions)
+      .where(mentions: { status_id: @status.id })
+  end
+
+  def paginated_mentioned_users
+    Mention.paginate_by_max_id(
+      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_mentioned_by_index_url pagination_params(max_id: pagination_max_id) if records_continue?
+  end
+
+  def prev_path
+    api_v1_status_mentioned_by_index_url pagination_params(since_id: pagination_since_id) unless @accounts.empty?
+  end
+
+  def pagination_max_id
+    @accounts.last.mentions.last.id
+  end
+
+  def pagination_since_id
+    @accounts.first.mentions.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_mentioned_users?
+  rescue Mastodon::NotPermittedError
+    not_found
+  end
+
+  def pagination_params(core_params)
+    params.slice(:limit).permit(:limit).merge(core_params)
+  end
+end

app/javascript/mastodon/actions/interactions.js

@@ -71,6 +71,14 @@ export const UNBOOKMARK_REQUEST = 'UNBOOKMARKED_REQUEST';
 export const UNBOOKMARK_SUCCESS = 'UNBOOKMARKED_SUCCESS';
 export const UNBOOKMARK_FAIL    = 'UNBOOKMARKED_FAIL';
 
+export const MENTIONED_USERS_FETCH_REQUEST = 'MENTIONED_USERS_FETCH_REQUEST';
+export const MENTIONED_USERS_FETCH_SUCCESS = 'MENTIONED_USERS_FETCH_SUCCESS';
+export const MENTIONED_USERS_FETCH_FAIL    = 'MENTIONED_USERS_FETCH_FAIL';
+
+export const MENTIONED_USERS_EXPAND_REQUEST = 'MENTIONED_USERS_EXPAND_REQUEST';
+export const MENTIONED_USERS_EXPAND_SUCCESS = 'MENTIONED_USERS_EXPAND_SUCCESS';
+export const MENTIONED_USERS_EXPAND_FAIL    = 'MENTIONED_USERS_EXPAND_FAIL';
+
 export function reblog(status, visibility) {
   return function (dispatch, getState) {
     dispatch(reblogRequest(status));
@@ -735,3 +743,85 @@ export function unpinFail(status, error) {
     skipLoading: true,
   };
 }
+
+export function fetchMentionedUsers(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchMentionedUsersRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/mentioned_by`).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(importFetchedAccounts(response.data));
+      dispatch(fetchMentionedUsersSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => {
+      dispatch(fetchMentionedUsersFail(id, error));
+    });
+  };
+}
+
+export function fetchMentionedUsersRequest(id) {
+  return {
+    type: MENTIONED_USERS_FETCH_REQUEST,
+    id,
+  };
+}
+
+export function fetchMentionedUsersSuccess(id, accounts, next) {
+  return {
+    type: MENTIONED_USERS_FETCH_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+}
+
+export function fetchMentionedUsersFail(id, error) {
+  return {
+    type: MENTIONED_USERS_FETCH_FAIL,
+    id,
+    error,
+  };
+}
+
+export function expandMentionedUsers(id) {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'mentioned_users', id, 'next']);
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandMentionedUsersRequest(id));
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(importFetchedAccounts(response.data));
+      dispatch(expandMentionedUsersSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(expandMentionedUsersFail(id, error)));
+  };
+}
+
+export function expandMentionedUsersRequest(id) {
+  return {
+    type: MENTIONED_USERS_EXPAND_REQUEST,
+    id,
+  };
+}
+
+export function expandMentionedUsersSuccess(id, accounts, next) {
+  return {
+    type: MENTIONED_USERS_EXPAND_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+}
+
+export function expandMentionedUsersFail(id, error) {
+  return {
+    type: MENTIONED_USERS_EXPAND_FAIL,
+    id,
+    error,
+  };
+}

app/javascript/mastodon/components/status_action_bar.jsx

@@ -24,6 +24,7 @@ const messages = defineMessages({
   edit: { id: 'status.edit', defaultMessage: 'Edit' },
   direct: { id: 'status.direct', defaultMessage: 'Privately mention @{name}' },
   mention: { id: 'status.mention', defaultMessage: 'Mention @{name}' },
+  mentions: { id: 'status.mentions', defaultMessage: 'Mentioned users' },
   mute: { id: 'account.mute', defaultMessage: 'Mute @{name}' },
   block: { id: 'account.block', defaultMessage: 'Block @{name}' },
   reply: { id: 'status.reply', defaultMessage: 'Reply' },
@@ -249,6 +250,10 @@ class StatusActionBar extends ImmutablePureComponent {
     this.context.router.history.push(`/@${this.props.status.getIn(['account', 'acct'])}/${this.props.status.get('id')}`);
   };
 
+  handleOpenMentions = () => {
+    this.context.router.history.push(`/@${this.props.status.getIn(['account', 'acct'])}/${this.props.status.get('id')}/mentioned_users`);
+  };
+
   handleEmbed = () => {
     this.props.onEmbed(this.props.status);
   };
@@ -315,7 +320,11 @@ class StatusActionBar extends ImmutablePureComponent {
     }
 
     if (signedIn) {
-      if (!simpleTimelineMenu) {
+      if (writtenByMe) {
+        menu.push({ text: intl.formatMessage(messages.mentions), action: this.handleOpenMentions });
+      }
+
+      if (!simpleTimelineMenu || writtenByMe) {
         menu.push(null);
       }
 

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

@@ -0,0 +1,90 @@
+import PropTypes from 'prop-types';
+
+import { 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 { debounce } from 'lodash';
+
+import { fetchMentionedUsers, expandMentionedUsers } from 'mastodon/actions/interactions';
+import ColumnHeader from 'mastodon/components/column_header';
+import { LoadingIndicator } from 'mastodon/components/loading_indicator';
+import ScrollableList from 'mastodon/components/scrollable_list';
+import AccountContainer from 'mastodon/containers/account_container';
+import Column from 'mastodon/features/ui/components/column';
+
+const mapStateToProps = (state, props) => ({
+  accountIds: state.getIn(['user_lists', 'mentioned_users', props.params.statusId, 'items']),
+  hasMore: !!state.getIn(['user_lists', 'mentioned_users', props.params.statusId, 'next']),
+  isLoading: state.getIn(['user_lists', 'mentioned_users', props.params.statusId, 'isLoading'], true),
+});
+
+class MentionedUsers 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,
+  };
+
+  UNSAFE_componentWillMount () {
+    if (!this.props.accountIds) {
+      this.props.dispatch(fetchMentionedUsers(this.props.params.statusId));
+    }
+  }
+
+  handleLoadMore = debounce(() => {
+    this.props.dispatch(expandMentionedUsers(this.props.params.statusId));
+  }, 300, { leading: true });
+
+  render () {
+    const { accountIds, hasMore, isLoading, multiColumn } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    const emptyMessage = <FormattedMessage id='empty_column.mentioned_users' defaultMessage='No one has been mentioned by this post.' />;
+
+    return (
+      <Column bindToDocument={!multiColumn}>
+        <ColumnHeader
+          showBackButton
+          multiColumn={multiColumn}
+        />
+
+        <ScrollableList
+          scrollKey='mentioned_users'
+          onLoadMore={this.handleLoadMore}
+          hasMore={hasMore}
+          isLoading={isLoading}
+          emptyMessage={emptyMessage}
+          bindToDocument={!multiColumn}
+        >
+          {accountIds.map(id =>
+            <AccountContainer key={id} id={id} withNote={false} />,
+          )}
+        </ScrollableList>
+
+        <Helmet>
+          <meta name='robots' content='noindex' />
+        </Helmet>
+      </Column>
+    );
+  }
+
+}
+
+export default connect(mapStateToProps)(injectIntl(MentionedUsers));

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

@@ -22,6 +22,7 @@ const messages = defineMessages({
   edit: { id: 'status.edit', defaultMessage: 'Edit' },
   direct: { id: 'status.direct', defaultMessage: 'Privately mention @{name}' },
   mention: { id: 'status.mention', defaultMessage: 'Mention @{name}' },
+  mentions: { id: 'status.mentions', defaultMessage: 'Mentioned users' },
   reply: { id: 'status.reply', defaultMessage: 'Reply' },
   reblog: { id: 'status.reblog', defaultMessage: 'Boost' },
   cancel_reblog: { id: 'status.cancel_reblog_private', defaultMessage: 'Unboost' },
@@ -95,6 +96,10 @@ class ActionBar extends PureComponent {
     intl: PropTypes.object.isRequired,
   };
 
+  handleOpenMentions = () => {
+    this.context.router.history.push(`/@${this.props.status.getIn(['account', 'acct'])}/${this.props.status.get('id')}/mentioned_users`);
+  };
+
   handleReplyClick = () => {
     this.props.onReply(this.props.status);
   };
@@ -264,6 +269,7 @@ class ActionBar extends PureComponent {
           menu.push(null);
         }
 
+        menu.push({ text: intl.formatMessage(messages.mentions), action: this.handleOpenMentions });
         menu.push({ text: intl.formatMessage(mutingConversation ? messages.unmuteConversation : messages.muteConversation), action: this.handleConversationMuteClick });
         menu.push(null);
         menu.push({ text: intl.formatMessage(messages.edit), action: this.handleEditClick });

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

@@ -46,6 +46,7 @@ import {
   Favourites,
   EmojiReactions,
   StatusReferences,
+  MentionedUsers,
   DirectTimeline,
   HashtagTimeline,
   AntennaTimeline,
@@ -243,6 +244,7 @@ class SwitchingColumnsArea extends PureComponent {
           <WrappedRoute path='/@:acct/:statusId/favourites' component={Favourites} content={children} />
           <WrappedRoute path='/@:acct/:statusId/emoji_reactions' component={EmojiReactions} content={children} />
           <WrappedRoute path='/@:acct/:statusId/references' component={StatusReferences} content={children} />
+          <WrappedRoute path='/@:acct/:statusId/mentioned_users' component={MentionedUsers} 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

@@ -106,6 +106,10 @@ export function StatusReferences () {
   return import(/* webpackChunkName: "features/status_references" */'../../status_references');
 }
 
+export function MentionedUsers () {
+  return import(/* webpackChunkName: "features/mentioned_users" */'../../mentioned_users');
+}
+
 export function FollowRequests () {
   return import(/* webpackChunkName: "features/follow_requests" */'../../follow_requests');
 }

app/javascript/mastodon/reducers/circles.js

@@ -23,6 +23,7 @@ const initialState = ImmutableList();
 const initialStatusesState = ImmutableMap({
   items: ImmutableList(),
   isLoading: false,
+  loaded: true,
   next: null,
 });
 

app/javascript/mastodon/reducers/user_lists.js

@@ -64,6 +64,12 @@ import {
   EMOJI_REACTIONS_EXPAND_SUCCESS,
   EMOJI_REACTIONS_EXPAND_FAIL,
   STATUS_REFERENCES_FETCH_SUCCESS,
+  MENTIONED_USERS_FETCH_REQUEST,
+  MENTIONED_USERS_FETCH_SUCCESS,
+  MENTIONED_USERS_FETCH_FAIL,
+  MENTIONED_USERS_EXPAND_REQUEST,
+  MENTIONED_USERS_EXPAND_SUCCESS,
+  MENTIONED_USERS_EXPAND_FAIL,
 } from '../actions/interactions';
 import {
   MUTES_FETCH_REQUEST,
@@ -92,6 +98,7 @@ const initialState = ImmutableMap({
   favourited_by: initialListState,
   emoji_reactioned_by: initialListState,
   referred_by: initialListState,
+  mentioned_users: initialListState,
   follow_requests: initialListState,
   blocks: initialListState,
   mutes: initialListState,
@@ -205,6 +212,16 @@ export default function userLists(state = initialState, action) {
     return appendToEmojiReactionList(state, ['emoji_reactioned_by', action.id], action.accounts, action.next);
   case STATUS_REFERENCES_FETCH_SUCCESS:
     return state.setIn(['referred_by', action.id], ImmutableList(action.statuses.map(item => item.id)));
+  case MENTIONED_USERS_FETCH_SUCCESS:
+    return normalizeList(state, ['mentioned_users', action.id], action.accounts, action.next);
+  case MENTIONED_USERS_EXPAND_SUCCESS:
+    return appendToList(state, ['mentioned_users', action.id], action.accounts, action.next);
+  case MENTIONED_USERS_FETCH_REQUEST:
+  case MENTIONED_USERS_EXPAND_REQUEST:
+    return state.setIn(['mentioned_users', action.id, 'isLoading'], true);
+  case MENTIONED_USERS_FETCH_FAIL:
+  case MENTIONED_USERS_EXPAND_FAIL:
+    return state.setIn(['mentioned_users', action.id, 'isLoading'], false);
   case NOTIFICATIONS_UPDATE:
     return action.notification.type === 'follow_request' ? normalizeFollowRequest(state, action.notification) : state;
   case FOLLOW_REQUESTS_FETCH_SUCCESS: