Gab Social. All are welcome.

app/javascript/gabsocial/selectors/index.js

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+import { createSelector } from 'reselect';
+import { List as ImmutableList } from 'immutable';
+import { me } from '../initial_state';
+
+const getAccountBase         = (state, id) => state.getIn(['accounts', id], null);
+const getAccountCounters     = (state, id) => state.getIn(['accounts_counters', id], null);
+const getAccountRelationship = (state, id) => state.getIn(['relationships', id], null);
+const getAccountMoved        = (state, id) => state.getIn(['accounts', state.getIn(['accounts', id, 'moved'])]);
+
+export const makeGetAccount = () => {
+  return createSelector([getAccountBase, getAccountCounters, getAccountRelationship, getAccountMoved], (base, counters, relationship, moved) => {
+    if (base === null) {
+      return null;
+    }
+
+    return base.merge(counters).withMutations(map => {
+      map.set('relationship', relationship);
+      map.set('moved', moved);
+    });
+  });
+};
+
+const toServerSideType = columnType => {
+  switch (columnType) {
+  case 'home':
+  case 'notifications':
+  case 'public':
+  case 'thread':
+    return columnType;
+  default:
+    if (columnType.indexOf('list:') > -1) {
+      return 'home';
+    } else {
+      return 'public'; // community, account, hashtag
+    }
+  }
+};
+
+export const getFilters = (state, { contextType }) => state.get('filters', ImmutableList()).filter(filter => contextType && filter.get('context').includes(toServerSideType(contextType)) && (filter.get('expires_at') === null || Date.parse(filter.get('expires_at')) > (new Date())));
+
+const escapeRegExp = string =>
+  string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
+
+export const regexFromFilters = filters => {
+  if (filters.size === 0) {
+    return null;
+  }
+
+  return new RegExp(filters.map(filter => {
+    let expr = escapeRegExp(filter.get('phrase'));
+
+    if (filter.get('whole_word')) {
+      if (/^[\w]/.test(expr)) {
+        expr = `\\b${expr}`;
+      }
+
+      if (/[\w]$/.test(expr)) {
+        expr = `${expr}\\b`;
+      }
+    }
+
+    return expr;
+  }).join('|'), 'i');
+};
+
+export const makeGetStatus = () => {
+  return createSelector(
+    [
+      (state, { id }) => state.getIn(['statuses', id]),
+      (state, { id }) => state.getIn(['statuses', state.getIn(['statuses', id, 'reblog'])]),
+      (state, { id }) => state.getIn(['accounts', state.getIn(['statuses', id, 'account'])]),
+      (state, { id }) => state.getIn(['accounts', state.getIn(['statuses', state.getIn(['statuses', id, 'reblog']), 'account'])]),
+      getFilters,
+    ],
+
+    (statusBase, statusReblog, accountBase, accountReblog, filters) => {
+      if (!statusBase) {
+        return null;
+      }
+
+      if (statusReblog) {
+        statusReblog = statusReblog.set('account', accountReblog);
+      } else {
+        statusReblog = null;
+      }
+
+      const regex    = (accountReblog || accountBase).get('id') !== me && regexFromFilters(filters);
+      const filtered = regex && regex.test(statusBase.get('reblog') ? statusReblog.get('search_index') : statusBase.get('search_index'));
+
+      return statusBase.withMutations(map => {
+        map.set('reblog', statusReblog);
+        map.set('account', accountBase);
+        map.set('filtered', filtered);
+      });
+    }
+  );
+};
+
+const getAlertsBase = state => state.get('alerts');
+
+export const getAlerts = createSelector([getAlertsBase], (base) => {
+  let arr = [];
+
+  base.forEach(item => {
+    arr.push({
+      message: item.get('message'),
+      title: item.get('title'),
+      key: item.get('key'),
+      dismissAfter: 5000,
+      barStyle: {
+        zIndex: 200,
+      },
+    });
+  });
+
+  return arr;
+});
+
+export const makeGetNotification = () => {
+  return createSelector([
+    (_, base)             => base,
+    (state, _, accountId) => state.getIn(['accounts', accountId]),
+  ], (base, account) => {
+    return base.set('account', account);
+  });
+};
+
+export const getAccountGallery = createSelector([
+  (state, id) => state.getIn(['timelines', `account:${id}:media`, 'items'], ImmutableList()),
+  state       => state.get('statuses'),
+], (statusIds, statuses) => {
+  let medias = ImmutableList();
+
+  statusIds.forEach(statusId => {
+    const status = statuses.get(statusId);
+    medias = medias.concat(status.get('media_attachments').map(media => media.set('status', status)));
+  });
+
+  return medias;
+});