Add polls

Port front-end parts of 230a012f00 to glitch-soc

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

@@ -29,6 +29,7 @@ import listEditor from './list_editor';
 import listAdder from './list_adder';
 import filters from './filters';
 import pinnedAccountsEditor from './pinned_accounts_editor';
+import polls from './polls';
 
 const reducers = {
   dropdown_menu,
@@ -61,6 +62,7 @@ const reducers = {
   listAdder,
   filters,
   pinnedAccountsEditor,
+  polls,
 };
 
 export default combineReducers(reducers);

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

@@ -0,0 +1,19 @@
+import { POLL_VOTE_SUCCESS, POLL_FETCH_SUCCESS } from 'mastodon/actions/polls';
+import { POLLS_IMPORT } from 'mastodon/actions/importer';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+
+const importPolls = (state, polls) => state.withMutations(map => polls.forEach(poll => map.set(poll.id, fromJS(poll))));
+
+const initialState = ImmutableMap();
+
+export default function polls(state = initialState, action) {
+  switch(action.type) {
+  case POLLS_IMPORT:
+    return importPolls(state, action.polls);
+  case POLL_VOTE_SUCCESS:
+  case POLL_FETCH_SUCCESS:
+    return importPolls(state, [action.poll]);
+  default:
+    return state;
+  }
+}