add frontend for emoji reactions

this is still pretty bare bones but hey, it works.

app/javascript/flavours/glitch/actions/interactions.js

@@ -41,6 +41,16 @@ export const UNBOOKMARK_REQUEST = 'UNBOOKMARKED_REQUEST';
 export const UNBOOKMARK_SUCCESS = 'UNBOOKMARKED_SUCCESS';
 export const UNBOOKMARK_FAIL    = 'UNBOOKMARKED_FAIL';
 
+export const STATUS_REACTION_UPDATE = 'STATUS_REACTION_UPDATE';
+
+export const STATUS_REACTION_ADD_REQUEST = 'STATUS_REACTION_ADD_REQUEST';
+export const STATUS_REACTION_ADD_SUCCESS = 'STATUS_REACTION_ADD_SUCCESS';
+export const STATUS_REACTION_ADD_FAIL    = 'STATUS_REACTION_ADD_FAIL';
+
+export const STATUS_REACTION_REMOVE_REQUEST = 'STATUS_REACTION_REMOVE_REQUEST';
+export const STATUS_REACTION_REMOVE_SUCCESS = 'STATUS_REACTION_REMOVE_SUCCESS';
+export const STATUS_REACTION_REMOVE_FAIL    = 'STATUS_REACTION_REMOVE_FAIL';
+
 export function reblog(status, visibility) {
   return function (dispatch, getState) {
     dispatch(reblogRequest(status));
@@ -391,4 +401,79 @@ export function unpinFail(status, error) {
     status,
     error,
   };
-}
+};
+
+export const statusAddReaction = (statusId, name) => (dispatch, getState) => {
+  const status = getState().get('statuses').get(statusId);
+  let alreadyAdded = false;
+  if (status) {
+    const reaction = status.get('reactions').find(x => x.get('name') === name);
+    if (reaction && reaction.get('me')) {
+      alreadyAdded = true;
+    }
+  }
+  if (!alreadyAdded) {
+    dispatch(statusAddReactionRequest(statusId, name, alreadyAdded));
+  }
+
+  api(getState).put(`/api/v1/statuses/${statusId}/reactions/${name}`).then(() => {
+    dispatch(statusAddReactionSuccess(statusId, name, alreadyAdded));
+  }).catch(err => {
+    if (!alreadyAdded) {
+      dispatch(statusAddReactionFail(statusId, name, err));
+    }
+  });
+};
+
+export const statusAddReactionRequest = (statusId, name) => ({
+  type: STATUS_REACTION_ADD_REQUEST,
+  id: statusId,
+  name,
+  skipLoading: true,
+});
+
+export const statusAddReactionSuccess = (statusId, name) => ({
+  type: STATUS_REACTION_ADD_SUCCESS,
+  id: statusId,
+  name,
+  skipLoading: true,
+});
+
+export const statusAddReactionFail = (statusId, name, error) => ({
+  type: STATUS_REACTION_ADD_FAIL,
+  id: statusId,
+  name,
+  error,
+  skipLoading: true,
+});
+
+export const statusRemoveReaction = (statusId, name) => (dispatch, getState) => {
+  dispatch(statusRemoveReactionRequest(statusId, name));
+
+  api(getState).delete(`/api/v1/statuses/${statusId}/reactions/${name}`).then(() => {
+    dispatch(statusRemoveReactionSuccess(statusId, name));
+  }).catch(err => {
+    dispatch(statusRemoveReactionFail(statusId, name, err));
+  });
+};
+
+export const statusRemoveReactionRequest = (statusId, name) => ({
+  type: STATUS_REACTION_REMOVE_REQUEST,
+  id: statusId,
+  name,
+  skipLoading: true,
+});
+
+export const statusRemoveReactionSuccess = (statusId, name) => ({
+  type: STATUS_REACTION_REMOVE_SUCCESS,
+  id: statusId,
+  name,
+  skipLoading: true,
+});
+
+export const statusRemoveReactionFail = (statusId, name) => ({
+  type: STATUS_REACTION_REMOVE_FAIL,
+  id: statusId,
+  name,
+  skipLoading: true,
+});

app/javascript/flavours/glitch/components/status.jsx

@@ -6,6 +6,7 @@ import StatusHeader from './status_header';
 import StatusIcons from './status_icons';
 import StatusContent from './status_content';
 import StatusActionBar from './status_action_bar';
+import StatusReactionsBar from './status_reactions_bar';
 import AttachmentList from './attachment_list';
 import Card from '../features/status/components/card';
 import { injectIntl, FormattedMessage } from 'react-intl';
@@ -74,6 +75,8 @@ class Status extends ImmutablePureComponent {
     onDelete: PropTypes.func,
     onDirect: PropTypes.func,
     onMention: PropTypes.func,
+    onReactionAdd: PropTypes.func,
+    onReactionRemove: PropTypes.func,
     onPin: PropTypes.func,
     onOpenMedia: PropTypes.func,
     onOpenVideo: PropTypes.func,
@@ -101,6 +104,7 @@ class Status extends ImmutablePureComponent {
     scrollKey: PropTypes.string,
     deployPictureInPicture: PropTypes.func,
     settings: ImmutablePropTypes.map.isRequired,
+    emojiMap: ImmutablePropTypes.map.isRequired,
     pictureInPicture: ImmutablePropTypes.contains({
       inUse: PropTypes.bool,
       available: PropTypes.bool,
@@ -809,6 +813,14 @@ class Status extends ImmutablePureComponent {
             rewriteMentions={settings.get('rewrite_mentions')}
           />
 
+          <StatusReactionsBar
+            statusId={status.get('id')}
+            reactions={status.get('reactions')}
+            addReaction={this.props.onReactionAdd}
+            removeReaction={this.props.onReactionRemove}
+            emojiMap={this.props.emojiMap}
+          />
+
           {!isCollapsed || !(muted || !settings.getIn(['collapsed', 'show_action_bar'])) ? (
             <StatusActionBar
               status={status}

app/javascript/flavours/glitch/components/status_reactions_bar.js

@@ -0,0 +1,177 @@
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { reduceMotion } from '../initial_state';
+import spring from 'react-motion/lib/spring';
+import TransitionMotion from 'react-motion/lib/TransitionMotion';
+import classNames from 'classnames';
+import EmojiPickerDropdown from '../features/compose/containers/emoji_picker_dropdown_container';
+import Icon from './icon';
+import React from 'react';
+import unicodeMapping from '../features/emoji/emoji_unicode_mapping_light';
+import AnimatedNumber from './animated_number';
+import { assetHost } from '../utils/config';
+import { autoPlayGif } from '../initial_state';
+
+export default class StatusReactionsBar extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string.isRequired,
+    reactions: ImmutablePropTypes.list.isRequired,
+    addReaction: PropTypes.func.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+    emojiMap: ImmutablePropTypes.map.isRequired,
+  };
+
+  handleEmojiPick = data => {
+    const { addReaction, statusId } = this.props;
+    addReaction(statusId, data.native.replace(/:/g, ''));
+  }
+
+  willEnter() {
+    return { scale: reduceMotion ? 1 : 0 };
+  }
+
+  willLeave() {
+    return { scale: reduceMotion ? 0 : spring(0, { stiffness: 170, damping: 26 }) };
+  }
+
+  render() {
+    const { reactions } = this.props;
+    const visibleReactions = reactions.filter(x => x.get('count') > 0);
+
+    const styles = visibleReactions.map(reaction => ({
+      key: reaction.get('name'),
+      data: reaction,
+      style: { scale: reduceMotion ? 1 : spring(1, { stiffness: 150, damping: 13 }) },
+    })).toArray();
+
+    return (
+      <TransitionMotion styles={styles} willEnter={this.willEnter} willLeave={this.willLeave}>
+        {items => (
+          <div className={classNames('reactions-bar', { 'reactions-bar--empty': visibleReactions.isEmpty() })}>
+            {items.map(({ key, data, style }) => (
+              <Reaction
+                key={key}
+                statusId={this.props.statusId}
+                reaction={data}
+                style={{ transform: `scale(${style.scale})`, position: style.scale < 0.5 ? 'absolute' : 'static' }}
+                addReaction={this.props.addReaction}
+                removeReaction={this.props.removeReaction}
+                emojiMap={this.props.emojiMap}
+              />
+            ))}
+
+            {visibleReactions.size < 8 && <EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} button={<Icon id='plus' />} />}
+          </div>
+        )}
+      </TransitionMotion>
+    );
+  }
+
+}
+
+class Reaction extends ImmutablePureComponent {
+
+  static propTypes = {
+    statusId: PropTypes.string,
+    reaction: ImmutablePropTypes.map.isRequired,
+    addReaction: PropTypes.func.isRequired,
+    removeReaction: PropTypes.func.isRequired,
+    emojiMap: ImmutablePropTypes.map.isRequired,
+    style: PropTypes.object,
+  };
+
+  state = {
+    hovered: false,
+  };
+
+  handleClick = () => {
+    const { reaction, statusId, addReaction, removeReaction } = this.props;
+
+    if (reaction.get('me')) {
+      removeReaction(statusId, reaction.get('name'));
+    } else {
+      addReaction(statusId, reaction.get('name'));
+    }
+  }
+
+  handleMouseEnter = () => this.setState({ hovered: true })
+
+  handleMouseLeave = () => this.setState({ hovered: false })
+
+  render() {
+    const { reaction } = this.props;
+
+    let shortCode = reaction.get('name');
+
+    if (unicodeMapping[shortCode]) {
+      shortCode = unicodeMapping[shortCode].shortCode;
+    }
+
+    return (
+      <button
+        className={classNames('reactions-bar__item', { active: reaction.get('me') })}
+        onClick={this.handleClick}
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+        title={`:${shortCode}:`}
+        style={this.props.style}
+      >
+        <span className='reactions-bar__item__emoji'>
+          <Emoji hovered={this.state.hovered} emoji={reaction.get('name')} emojiMap={this.props.emojiMap} />
+        </span>
+        <span className='reactions-bar__item__count'>
+          <AnimatedNumber value={reaction.get('count')} />
+        </span>
+      </button>
+    );
+  }
+
+}
+
+class Emoji extends React.PureComponent {
+
+  static propTypes = {
+    emoji: PropTypes.string.isRequired,
+    emojiMap: ImmutablePropTypes.map.isRequired,
+    hovered: PropTypes.bool.isRequired,
+  };
+
+  render() {
+    const { emoji, emojiMap, hovered } = this.props;
+
+    if (unicodeMapping[emoji]) {
+      const { filename, shortCode } = unicodeMapping[this.props.emoji];
+      const title = shortCode ? `:${shortCode}:` : '';
+
+      return (
+        <img
+          draggable='false'
+          className='emojione'
+          alt={emoji}
+          title={title}
+          src={`${assetHost}/emoji/${filename}.svg`}
+        />
+      );
+    } else if (emojiMap.get(emoji)) {
+      const filename = (autoPlayGif || hovered)
+        ? emojiMap.getIn([emoji, 'url'])
+        : emojiMap.getIn([emoji, 'static_url']);
+      const shortCode = `:${emoji}:`;
+
+      return (
+        <img
+          draggable='false'
+          className='emojione custom-emoji'
+          alt={shortCode}
+          title={shortCode}
+          src={filename}
+        />
+      );
+    } else {
+      return null;
+    }
+  }
+
+}

app/javascript/flavours/glitch/containers/status_container.js

@@ -16,6 +16,8 @@ import {
   unbookmark,
   pin,
   unpin,
+  statusAddReaction,
+  statusRemoveReaction,
 } from 'flavours/glitch/actions/interactions';
 import {
   muteStatus,
@@ -44,6 +46,10 @@ import { showAlertForError } from '../actions/alerts';
 import AccountContainer from 'flavours/glitch/containers/account_container';
 import Spoilers from '../components/spoilers';
 import Icon from 'flavours/glitch/components/icon';
+import { createSelector } from 'reselect';
+import { Map as ImmutableMap } from 'immutable';
+
+const customEmojiMap = createSelector([state => state.get('custom_emojis')], items => items.reduce((map, emoji) => map.set(emoji.get('shortcode'), emoji), ImmutableMap()));
 
 const messages = defineMessages({
   deleteConfirm: { id: 'confirmations.delete.confirm', defaultMessage: 'Delete' },
@@ -86,6 +92,7 @@ const makeMapStateToProps = () => {
       account: account || props.account,
       settings: state.get('local_settings'),
       prepend: prepend || props.prepend,
+      emojiMap: customEmojiMap(state),
       pictureInPicture: getPictureInPicture(state, props),
     };
   };
@@ -165,6 +172,14 @@ const mapDispatchToProps = (dispatch, { intl, contextType }) => ({
     }
   },
 
+  onReactionAdd (statusId, name) {
+    dispatch(statusAddReaction(statusId, name));
+  },
+
+  onReactionRemove (statusId, name) {
+    dispatch(statusRemoveReaction(statusId, name));
+  },
+
   onEmbed (status) {
     dispatch(openModal('EMBED', {
       url: status.get('url'),

app/javascript/flavours/glitch/reducers/statuses.js

@@ -6,6 +6,11 @@ import {
   UNFAVOURITE_SUCCESS,
   BOOKMARK_REQUEST,
   BOOKMARK_FAIL,
+  STATUS_REACTION_UPDATE,
+  STATUS_REACTION_ADD_FAIL,
+  STATUS_REACTION_REMOVE_FAIL,
+  STATUS_REACTION_ADD_REQUEST,
+  STATUS_REACTION_REMOVE_REQUEST,
 } from 'flavours/glitch/actions/interactions';
 import {
   STATUS_MUTE_SUCCESS,
@@ -37,6 +42,37 @@ const deleteStatus = (state, id, references) => {
   return state.delete(id);
 };
 
+const updateReaction = (state, id, name, updater) => state.update(
+  id,
+  status => status.update(
+    'reactions',
+    reactions => {
+      const index = reactions.findIndex(reaction => reaction.get('name') === name);
+      if (index > -1) {
+        return reactions.update(index, reaction => updater(reaction));
+      } else {
+        return reactions.push(updater(fromJS({ name, count: 0 })));
+      }
+    },
+  ),
+);
+
+const updateReactionCount = (state, reaction) => updateReaction(state, reaction.status_id, reaction.name, x => x.set('count', reaction.count));
+
+const addReaction = (state, id, name) => updateReaction(
+  state,
+  id,
+  name,
+  x => x.set('me', true).update('count', n => n + 1),
+);
+
+const removeReaction = (state, id, name) => updateReaction(
+  state,
+  id,
+  name,
+  x => x.set('me', false).update('count', n => n - 1),
+);
+
 const initialState = ImmutableMap();
 
 export default function statuses(state = initialState, action) {
@@ -63,6 +99,14 @@ export default function statuses(state = initialState, action) {
     return state.setIn([action.status.get('id'), 'reblogged'], true);
   case REBLOG_FAIL:
     return state.get(action.status.get('id')) === undefined ? state : state.setIn([action.status.get('id'), 'reblogged'], false);
+  case STATUS_REACTION_UPDATE:
+    return updateReactionCount(state, action.reaction);
+  case STATUS_REACTION_ADD_REQUEST:
+  case STATUS_REACTION_REMOVE_FAIL:
+    return addReaction(state, action.id, action.name);
+  case STATUS_REACTION_REMOVE_REQUEST:
+  case STATUS_REACTION_ADD_FAIL:
+    return removeReaction(state, action.id, action.name);
   case STATUS_MUTE_SUCCESS:
     return state.setIn([action.id, 'muted'], true);
   case STATUS_UNMUTE_SUCCESS: