Keep list of blocked domains

Might be overkill, but I'm trying to follow the same logic as for blocked users

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

@@ -0,0 +1,23 @@
+import {
+  DOMAIN_BLOCKS_FETCH_SUCCESS,
+  DOMAIN_BLOCKS_EXPAND_SUCCESS,
+  DOMAIN_UNBLOCK_SUCCESS,
+} from '../actions/domain_blocks';
+import { Map as ImmutableMap, OrderedSet as ImmutableOrderedSet } from 'immutable';
+
+const initialState = ImmutableMap({
+  blocks: ImmutableMap(),
+});
+
+export default function domainLists(state = initialState, action) {
+  switch(action.type) {
+  case DOMAIN_BLOCKS_FETCH_SUCCESS:
+    return state.setIn(['blocks', 'items'], ImmutableOrderedSet(action.domains)).setIn(['blocks', 'next'], action.next);
+  case DOMAIN_BLOCKS_EXPAND_SUCCESS:
+    return state.updateIn(['blocks', 'items'], set => set.union(action.domains)).setIn(['blocks', 'next'], action.next);
+  case DOMAIN_UNBLOCK_SUCCESS:
+    return state.updateIn(['blocks', 'items'], set => set.delete(action.domain));
+  default:
+    return state;
+  }
+};

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

@@ -5,6 +5,7 @@ import alerts from './alerts';
 import { loadingBarReducer } from 'react-redux-loading-bar';
 import modal from './modal';
 import user_lists from './user_lists';
+import domain_lists from './domain_lists';
 import accounts from './accounts';
 import accounts_counters from './accounts_counters';
 import statuses from './statuses';
@@ -33,6 +34,7 @@ const reducers = {
   loadingBar: loadingBarReducer,
   modal,
   user_lists,
+  domain_lists,
   status_lists,
   accounts,
   accounts_counters,