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diff --git a/app/javascript/flavours/glitch/reducers/compose.js b/app/javascript/flavours/glitch/reducers/compose.js
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+import {
+  COMPOSE_MOUNT,
+  COMPOSE_UNMOUNT,
+  COMPOSE_CHANGE,
+  COMPOSE_CYCLE_ELEFRIEND,
+  COMPOSE_REPLY,
+  COMPOSE_REPLY_CANCEL,
+  COMPOSE_DIRECT,
+  COMPOSE_MENTION,
+  COMPOSE_SUBMIT_REQUEST,
+  COMPOSE_SUBMIT_SUCCESS,
+  COMPOSE_SUBMIT_FAIL,
+  COMPOSE_UPLOAD_REQUEST,
+  COMPOSE_UPLOAD_SUCCESS,
+  COMPOSE_UPLOAD_FAIL,
+  COMPOSE_UPLOAD_UNDO,
+  COMPOSE_UPLOAD_PROGRESS,
+  THUMBNAIL_UPLOAD_REQUEST,
+  THUMBNAIL_UPLOAD_SUCCESS,
+  THUMBNAIL_UPLOAD_FAIL,
+  THUMBNAIL_UPLOAD_PROGRESS,
+  COMPOSE_SUGGESTIONS_CLEAR,
+  COMPOSE_SUGGESTIONS_READY,
+  COMPOSE_SUGGESTION_SELECT,
+  COMPOSE_SUGGESTION_IGNORE,
+  COMPOSE_SUGGESTION_TAGS_UPDATE,
+  COMPOSE_TAG_HISTORY_UPDATE,
+  COMPOSE_ADVANCED_OPTIONS_CHANGE,
+  COMPOSE_SENSITIVITY_CHANGE,
+  COMPOSE_SPOILERNESS_CHANGE,
+  COMPOSE_SPOILER_TEXT_CHANGE,
+  COMPOSE_VISIBILITY_CHANGE,
+  COMPOSE_CONTENT_TYPE_CHANGE,
+  COMPOSE_EMOJI_INSERT,
+  COMPOSE_UPLOAD_CHANGE_REQUEST,
+  COMPOSE_UPLOAD_CHANGE_SUCCESS,
+  COMPOSE_UPLOAD_CHANGE_FAIL,
+  COMPOSE_DOODLE_SET,
+  COMPOSE_RESET,
+  COMPOSE_POLL_ADD,
+  COMPOSE_POLL_REMOVE,
+  COMPOSE_POLL_OPTION_ADD,
+  COMPOSE_POLL_OPTION_CHANGE,
+  COMPOSE_POLL_OPTION_REMOVE,
+  COMPOSE_POLL_SETTINGS_CHANGE,
+  INIT_MEDIA_EDIT_MODAL,
+  COMPOSE_CHANGE_MEDIA_DESCRIPTION,
+  COMPOSE_CHANGE_MEDIA_FOCUS,
+} from 'flavours/glitch/actions/compose';
+import { TIMELINE_DELETE } from 'flavours/glitch/actions/timelines';
+import { STORE_HYDRATE } from 'flavours/glitch/actions/store';
+import { REDRAFT } from 'flavours/glitch/actions/statuses';
+import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
+import uuid from 'flavours/glitch/util/uuid';
+import { privacyPreference } from 'flavours/glitch/util/privacy_preference';
+import { me, defaultContentType } from 'flavours/glitch/util/initial_state';
+import { overwrite } from 'flavours/glitch/util/js_helpers';
+import { unescapeHTML } from 'flavours/glitch/util/html';
+import { recoverHashtags } from 'flavours/glitch/util/hashtag';
+
+const totalElefriends = 3;
+
+// ~4% chance you'll end up with an unexpected friend
+// glitch-soc/mastodon repo created_at date: 2017-04-20T21:55:28Z
+const glitchProbability = 1 - 0.0420215528;
+
+const initialState = ImmutableMap({
+  mounted: 0,
+  advanced_options: ImmutableMap({
+    do_not_federate: false,
+    threaded_mode: false,
+  }),
+  sensitive: false,
+  elefriend: Math.random() < glitchProbability ? Math.floor(Math.random() * totalElefriends) : totalElefriends,
+  spoiler: false,
+  spoiler_text: '',
+  privacy: null,
+  content_type: defaultContentType || 'text/plain',
+  text: '',
+  focusDate: null,
+  caretPosition: null,
+  preselectDate: null,
+  in_reply_to: null,
+  is_submitting: false,
+  is_uploading: false,
+  is_changing_upload: false,
+  progress: 0,
+  isUploadingThumbnail: false,
+  thumbnailProgress: 0,
+  media_attachments: ImmutableList(),
+  pending_media_attachments: 0,
+  poll: null,
+  suggestion_token: null,
+  suggestions: ImmutableList(),
+  default_advanced_options: ImmutableMap({
+    do_not_federate: false,
+    threaded_mode: null,  //  Do not reset
+  }),
+  default_privacy: 'public',
+  default_sensitive: false,
+  resetFileKey: Math.floor((Math.random() * 0x10000)),
+  idempotencyKey: null,
+  tagHistory: ImmutableList(),
+  media_modal: ImmutableMap({
+    id: null,
+    description: '',
+    focusX: 0,
+    focusY: 0,
+    dirty: false,
+  }),
+  doodle: ImmutableMap({
+    fg: 'rgb(  0,    0,    0)',
+    bg: 'rgb(255,  255,  255)',
+    swapped: false,
+    mode: 'draw',
+    size: 'normal',
+    weight: 2,
+    opacity: 1,
+    adaptiveStroke: true,
+    smoothing: false,
+  }),
+});
+
+const initialPoll = ImmutableMap({
+  options: ImmutableList(['', '']),
+  expires_in: 24 * 3600,
+  multiple: false,
+});
+
+function statusToTextMentions(state, status) {
+  let set = ImmutableOrderedSet([]);
+
+  if (status.getIn(['account', 'id']) !== me) {
+    set = set.add(`@${status.getIn(['account', 'acct'])} `);
+  }
+
+  return set.union(status.get('mentions').filterNot(mention => mention.get('id') === me).map(mention => `@${mention.get('acct')} `)).join('');
+};
+
+function apiStatusToTextMentions (state, status) {
+  let set = ImmutableOrderedSet([]);
+
+  if (status.account.id !== me) {
+    set = set.add(`@${status.account.acct} `);
+  }
+
+  return set.union(status.mentions.filter(
+    mention => mention.id !== me
+  ).map(
+    mention => `@${mention.acct} `
+  )).join('');
+}
+
+function apiStatusToTextHashtags (state, status) {
+  const text = unescapeHTML(status.content);
+  return ImmutableOrderedSet([]).union(recoverHashtags(status.tags, text).map(
+    (name) => `#${name} `
+  )).join('');
+}
+
+function clearAll(state) {
+  return state.withMutations(map => {
+    map.set('text', '');
+    if (defaultContentType) map.set('content_type', defaultContentType);
+    map.set('spoiler', false);
+    map.set('spoiler_text', '');
+    map.set('is_submitting', false);
+    map.set('is_changing_upload', false);
+    map.set('in_reply_to', null);
+    map.update(
+      'advanced_options',
+      map => map.mergeWith(overwrite, state.get('default_advanced_options'))
+    );
+    map.set('privacy', state.get('default_privacy'));
+    map.set('sensitive', false);
+    map.update('media_attachments', list => list.clear());
+    map.set('poll', null);
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+function continueThread (state, status) {
+  return state.withMutations(function (map) {
+    let text = apiStatusToTextMentions(state, status);
+    text = text + apiStatusToTextHashtags(state, status);
+    map.set('text', text);
+    if (status.spoiler_text) {
+      map.set('spoiler', true);
+      map.set('spoiler_text', status.spoiler_text);
+    } else {
+      map.set('spoiler', false);
+      map.set('spoiler_text', '');
+    }
+    map.set('is_submitting', false);
+    map.set('in_reply_to', status.id);
+    map.update(
+      'advanced_options',
+      map => map.merge(new ImmutableMap({ do_not_federate: status.local_only }))
+    );
+    map.set('privacy', status.visibility);
+    map.set('sensitive', false);
+    map.update('media_attachments', list => list.clear());
+    map.set('poll', null);
+    map.set('idempotencyKey', uuid());
+    map.set('focusDate', new Date());
+    map.set('caretPosition', null);
+    map.set('preselectDate', new Date());
+  });
+}
+
+function appendMedia(state, media, file) {
+  const prevSize = state.get('media_attachments').size;
+
+  return state.withMutations(map => {
+    if (media.get('type') === 'image') {
+      media = media.set('file', file);
+    }
+    map.update('media_attachments', list => list.push(media));
+    map.set('is_uploading', false);
+    map.set('resetFileKey', Math.floor((Math.random() * 0x10000)));
+    map.set('idempotencyKey', uuid());
+    map.update('pending_media_attachments', n => n - 1);
+
+    if (prevSize === 0 && (state.get('default_sensitive') || state.get('spoiler'))) {
+      map.set('sensitive', true);
+    }
+  });
+};
+
+function removeMedia(state, mediaId) {
+  const prevSize = state.get('media_attachments').size;
+
+  return state.withMutations(map => {
+    map.update('media_attachments', list => list.filterNot(item => item.get('id') === mediaId));
+    map.set('idempotencyKey', uuid());
+
+    if (prevSize === 1) {
+      map.set('sensitive', false);
+    }
+  });
+};
+
+const insertSuggestion = (state, position, token, completion, path) => {
+  return state.withMutations(map => {
+    map.updateIn(path, oldText => `${oldText.slice(0, position)}${completion}${completion[0] === ':' ? '\u200B' : ' '}${oldText.slice(position + token.length)}`);
+    map.set('suggestion_token', null);
+    map.set('suggestions', ImmutableList());
+    if (path.length === 1 && path[0] === 'text') {
+      map.set('focusDate', new Date());
+      map.set('caretPosition', position + completion.length + 1);
+    }
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+const ignoreSuggestion = (state, position, token, completion, path) => {
+  return state.withMutations(map => {
+    map.updateIn(path, oldText => `${oldText.slice(0, position + token.length)} ${oldText.slice(position + token.length)}`);
+    map.set('suggestion_token', null);
+    map.set('suggestions', ImmutableList());
+    map.set('focusDate', new Date());
+    map.set('caretPosition', position + token.length + 1);
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+const sortHashtagsByUse = (state, tags) => {
+  const personalHistory = state.get('tagHistory');
+
+  return tags.sort((a, b) => {
+    const usedA = personalHistory.includes(a.name);
+    const usedB = personalHistory.includes(b.name);
+
+    if (usedA === usedB) {
+      return 0;
+    } else if (usedA && !usedB) {
+      return 1;
+    } else {
+      return -1;
+    }
+  });
+};
+
+const insertEmoji = (state, position, emojiData) => {
+  const emoji = emojiData.native;
+
+  return state.withMutations(map => {
+    map.update('text', oldText => `${oldText.slice(0, position)}${emoji}\u200B${oldText.slice(position)}`);
+    map.set('focusDate', new Date());
+    map.set('caretPosition', position + emoji.length + 1);
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+const hydrate = (state, hydratedState) => {
+  state = clearAll(state.merge(hydratedState));
+
+  if (hydratedState.has('text')) {
+    state = state.set('text', hydratedState.get('text'));
+  }
+
+  return state;
+};
+
+const domParser = new DOMParser();
+
+const expandMentions = status => {
+  const fragment = domParser.parseFromString(status.get('content'), 'text/html').documentElement;
+
+  status.get('mentions').forEach(mention => {
+    fragment.querySelector(`a[href="${mention.get('url')}"]`).textContent = `@${mention.get('acct')}`;
+  });
+
+  return fragment.innerHTML;
+};
+
+const expiresInFromExpiresAt = expires_at => {
+  if (!expires_at) return 24 * 3600;
+  const delta = (new Date(expires_at).getTime() - Date.now()) / 1000;
+  return [300, 1800, 3600, 21600, 86400, 259200, 604800].find(expires_in => expires_in >= delta) || 24 * 3600;
+};
+
+const mergeLocalHashtagResults = (suggestions, prefix, tagHistory) => {
+  prefix = prefix.toLowerCase();
+  if (suggestions.length < 4) {
+    const localTags = tagHistory.filter(tag => tag.toLowerCase().startsWith(prefix) && !suggestions.some(suggestion => suggestion.type === 'hashtag' && suggestion.name.toLowerCase() === tag.toLowerCase()));
+    return suggestions.concat(localTags.slice(0, 4 - suggestions.length).toJS().map(tag => ({ type: 'hashtag', name: tag })));
+  } else {
+    return suggestions;
+  }
+};
+
+const normalizeSuggestions = (state, { accounts, emojis, tags, token }) => {
+  if (accounts) {
+    return accounts.map(item => ({ id: item.id, type: 'account' }));
+  } else if (emojis) {
+    return emojis.map(item => ({ ...item, type: 'emoji' }));
+  } else {
+    return mergeLocalHashtagResults(sortHashtagsByUse(state, tags.map(item => ({ ...item, type: 'hashtag' }))), token.slice(1), state.get('tagHistory'));
+  }
+};
+
+const updateSuggestionTags = (state, token) => {
+  const prefix = token.slice(1);
+
+  const suggestions = state.get('suggestions').toJS();
+  return state.merge({
+    suggestions: ImmutableList(mergeLocalHashtagResults(suggestions, prefix, state.get('tagHistory'))),
+    suggestion_token: token,
+  });
+};
+
+export default function compose(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return hydrate(state, action.state.get('compose'));
+  case COMPOSE_MOUNT:
+    return state.set('mounted', state.get('mounted') + 1);
+  case COMPOSE_UNMOUNT:
+    return state.set('mounted', Math.max(state.get('mounted') - 1, 0));
+  case COMPOSE_ADVANCED_OPTIONS_CHANGE:
+    return state
+      .set('advanced_options', state.get('advanced_options').set(action.option, !!overwrite(!state.getIn(['advanced_options', action.option]), action.value)))
+      .set('idempotencyKey', uuid());
+  case COMPOSE_SENSITIVITY_CHANGE:
+    return state.withMutations(map => {
+      if (!state.get('spoiler')) {
+        map.set('sensitive', !state.get('sensitive'));
+      }
+
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_SPOILERNESS_CHANGE:
+    return state.withMutations(map => {
+      map.set('spoiler', !state.get('spoiler'));
+      map.set('idempotencyKey', uuid());
+
+      if (!state.get('sensitive') && state.get('media_attachments').size >= 1) {
+        map.set('sensitive', true);
+      }
+    });
+  case COMPOSE_SPOILER_TEXT_CHANGE:
+    return state
+      .set('spoiler_text', action.text)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_VISIBILITY_CHANGE:
+    return state
+      .set('privacy', action.value)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_CONTENT_TYPE_CHANGE:
+    return state
+      .set('content_type', action.value)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_CHANGE:
+    return state
+      .set('text', action.text)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_CYCLE_ELEFRIEND:
+    return state
+      .set('elefriend', (state.get('elefriend') + 1) % totalElefriends);
+  case COMPOSE_REPLY:
+    return state.withMutations(map => {
+      map.set('in_reply_to', action.status.get('id'));
+      map.set('text', statusToTextMentions(state, action.status));
+      map.set('privacy', privacyPreference(action.status.get('visibility'), state.get('default_privacy')));
+      map.update(
+        'advanced_options',
+        map => map.merge(new ImmutableMap({ do_not_federate: !!action.status.get('local_only') }))
+      );
+      map.set('focusDate', new Date());
+      map.set('caretPosition', null);
+      map.set('preselectDate', new Date());
+      map.set('idempotencyKey', uuid());
+
+      if (action.status.get('spoiler_text').length > 0) {
+        let spoiler_text = action.status.get('spoiler_text');
+        if (action.prependCWRe && !spoiler_text.match(/^re[: ]/i)) {
+          spoiler_text = 're: '.concat(spoiler_text);
+        }
+        map.set('spoiler', true);
+        map.set('spoiler_text', spoiler_text);
+      } else {
+        map.set('spoiler', false);
+        map.set('spoiler_text', '');
+      }
+    });
+  case COMPOSE_REPLY_CANCEL:
+    state = state.setIn(['advanced_options', 'threaded_mode'], false);
+  case COMPOSE_RESET:
+    return state.withMutations(map => {
+      map.set('in_reply_to', null);
+      if (defaultContentType) map.set('content_type', defaultContentType);
+      map.set('text', '');
+      map.set('spoiler', false);
+      map.set('spoiler_text', '');
+      map.set('privacy', state.get('default_privacy'));
+      map.set('poll', null);
+      map.update(
+        'advanced_options',
+        map => map.mergeWith(overwrite, state.get('default_advanced_options'))
+      );
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_SUBMIT_REQUEST:
+    return state.set('is_submitting', true);
+  case COMPOSE_UPLOAD_CHANGE_REQUEST:
+    return state.set('is_changing_upload', true);
+  case COMPOSE_SUBMIT_SUCCESS:
+    return action.status && state.getIn(['advanced_options', 'threaded_mode']) ? continueThread(state, action.status) : clearAll(state);
+  case COMPOSE_SUBMIT_FAIL:
+    return state.set('is_submitting', false);
+  case COMPOSE_UPLOAD_CHANGE_FAIL:
+    return state.set('is_changing_upload', false);
+  case COMPOSE_UPLOAD_REQUEST:
+    return state.set('is_uploading', true).update('pending_media_attachments', n => n + 1);
+  case COMPOSE_UPLOAD_SUCCESS:
+    return appendMedia(state, fromJS(action.media), action.file);
+  case COMPOSE_UPLOAD_FAIL:
+    return state.set('is_uploading', false).update('pending_media_attachments', n => n - 1);
+  case COMPOSE_UPLOAD_UNDO:
+    return removeMedia(state, action.media_id);
+  case COMPOSE_UPLOAD_PROGRESS:
+    return state.set('progress', Math.round((action.loaded / action.total) * 100));
+  case THUMBNAIL_UPLOAD_REQUEST:
+    return state.set('isUploadingThumbnail', true);
+  case THUMBNAIL_UPLOAD_PROGRESS:
+    return state.set('thumbnailProgress', Math.round((action.loaded / action.total) * 100));
+  case THUMBNAIL_UPLOAD_FAIL:
+    return state.set('isUploadingThumbnail', false);
+  case THUMBNAIL_UPLOAD_SUCCESS:
+    return state
+      .set('isUploadingThumbnail', false)
+      .update('media_attachments', list => list.map(item => {
+        if (item.get('id') === action.media.id) {
+          return fromJS(action.media);
+        }
+
+        return item;
+      }));
+  case INIT_MEDIA_EDIT_MODAL:
+    const media =  state.get('media_attachments').find(item => item.get('id') === action.id);
+    return state.set('media_modal', ImmutableMap({
+      id: action.id,
+      description: media.get('description') || '',
+      focusX: media.getIn(['meta', 'focus', 'x'], 0),
+      focusY: media.getIn(['meta', 'focus', 'y'], 0),
+      dirty: false,
+    }));
+  case COMPOSE_CHANGE_MEDIA_DESCRIPTION:
+    return state.setIn(['media_modal', 'description'], action.description).setIn(['media_modal', 'dirty'], true);
+  case COMPOSE_CHANGE_MEDIA_FOCUS:
+    return state.setIn(['media_modal', 'focusX'], action.focusX).setIn(['media_modal', 'focusY'], action.focusY).setIn(['media_modal', 'dirty'], true);
+  case COMPOSE_MENTION:
+    return state.withMutations(map => {
+      map.update('text', text => [text.trim(), `@${action.account.get('acct')} `].filter((str) => str.length !== 0).join(' '));
+      map.set('focusDate', new Date());
+      map.set('caretPosition', null);
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_DIRECT:
+    return state.withMutations(map => {
+      map.update('text', text => [text.trim(), `@${action.account.get('acct')} `].filter((str) => str.length !== 0).join(' '));
+      map.set('privacy', 'direct');
+      map.set('focusDate', new Date());
+      map.set('caretPosition', null);
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_SUGGESTIONS_CLEAR:
+    return state.update('suggestions', ImmutableList(), list => list.clear()).set('suggestion_token', null);
+  case COMPOSE_SUGGESTIONS_READY:
+    return state.set('suggestions', ImmutableList(normalizeSuggestions(state, action))).set('suggestion_token', action.token);
+  case COMPOSE_SUGGESTION_SELECT:
+    return insertSuggestion(state, action.position, action.token, action.completion, action.path);
+  case COMPOSE_SUGGESTION_IGNORE:
+    return ignoreSuggestion(state, action.position, action.token, action.completion, action.path);
+  case COMPOSE_SUGGESTION_TAGS_UPDATE:
+    return updateSuggestionTags(state, action.token);
+  case COMPOSE_TAG_HISTORY_UPDATE:
+    return state.set('tagHistory', fromJS(action.tags));
+  case TIMELINE_DELETE:
+    if (action.id === state.get('in_reply_to')) {
+      return state.set('in_reply_to', null);
+    } else {
+      return state;
+    }
+  case COMPOSE_EMOJI_INSERT:
+    return insertEmoji(state, action.position, action.emoji);
+  case COMPOSE_UPLOAD_CHANGE_SUCCESS:
+    return state
+      .set('is_changing_upload', false)
+      .setIn(['media_modal', 'dirty'], false)
+      .update('media_attachments', list => list.map(item => {
+        if (item.get('id') === action.media.id) {
+          return fromJS(action.media);
+        }
+
+        return item;
+      }));
+  case COMPOSE_DOODLE_SET:
+    return state.mergeIn(['doodle'], action.options);
+  case REDRAFT:
+    const do_not_federate = !!action.status.get('local_only');
+    let text = action.raw_text || unescapeHTML(expandMentions(action.status));
+    if (do_not_federate) text = text.replace(/ ?👁\ufe0f?\u200b?$/, '');
+    return state.withMutations(map => {
+      map.set('text', text);
+      map.set('content_type', action.content_type || 'text/plain');
+      map.set('in_reply_to', action.status.get('in_reply_to_id'));
+      map.set('privacy', action.status.get('visibility'));
+      map.set('media_attachments', action.status.get('media_attachments'));
+      map.set('focusDate', new Date());
+      map.set('caretPosition', null);
+      map.set('idempotencyKey', uuid());
+      map.set('sensitive', action.status.get('sensitive'));
+      map.update(
+        'advanced_options',
+        map => map.merge(new ImmutableMap({ do_not_federate }))
+      );
+
+      if (action.status.get('spoiler_text').length > 0) {
+        map.set('spoiler', true);
+        map.set('spoiler_text', action.status.get('spoiler_text'));
+      } else {
+        map.set('spoiler', false);
+        map.set('spoiler_text', '');
+      }
+
+      if (action.status.get('poll')) {
+        map.set('poll', ImmutableMap({
+          options: action.status.getIn(['poll', 'options']).map(x => x.get('title')),
+          multiple: action.status.getIn(['poll', 'multiple']),
+          expires_in: expiresInFromExpiresAt(action.status.getIn(['poll', 'expires_at'])),
+        }));
+      }
+    });
+  case COMPOSE_POLL_ADD:
+    return state.set('poll', initialPoll);
+  case COMPOSE_POLL_REMOVE:
+    return state.set('poll', null);
+  case COMPOSE_POLL_OPTION_ADD:
+    return state.updateIn(['poll', 'options'], options => options.push(action.title));
+  case COMPOSE_POLL_OPTION_CHANGE:
+    return state.setIn(['poll', 'options', action.index], action.title);
+  case COMPOSE_POLL_OPTION_REMOVE:
+    return state.updateIn(['poll', 'options'], options => options.delete(action.index));
+  case COMPOSE_POLL_SETTINGS_CHANGE:
+    return state.update('poll', poll => poll.set('expires_in', action.expiresIn).set('multiple', action.isMultiple));
+  default:
+    return state;
+  }
+};