Refactoring redux state into different reducers

app/assets/javascripts/components/reducers/accounts.jsx

@@ -0,0 +1,80 @@
+import {
+  ACCOUNT_SET_SELF,
+  ACCOUNT_FETCH_SUCCESS,
+  FOLLOWERS_FETCH_SUCCESS,
+  FOLLOWING_FETCH_SUCCESS,
+  ACCOUNT_TIMELINE_FETCH_SUCCESS,
+  ACCOUNT_TIMELINE_EXPAND_SUCCESS
+} from '../actions/accounts';
+import { FOLLOW_SUBMIT_SUCCESS } from '../actions/follow';
+import { SUGGESTIONS_FETCH_SUCCESS } from '../actions/suggestions';
+import {
+  REBLOG_SUCCESS,
+  UNREBLOG_SUCCESS,
+  FAVOURITE_SUCCESS,
+  UNFAVOURITE_SUCCESS
+} from '../actions/interactions';
+import {
+  TIMELINE_REFRESH_SUCCESS,
+  TIMELINE_UPDATE,
+  TIMELINE_EXPAND_SUCCESS
+} from '../actions/timelines';
+import { STATUS_FETCH_SUCCESS } from '../actions/statuses';
+import Immutable from 'immutable';
+
+const normalizeAccount = (state, account) => state.set(account.get('id'), account);
+
+const normalizeAccounts = (state, accounts) => {
+  accounts.forEach(account => {
+    state = normalizeAccount(state, account);
+  });
+
+  return state;
+};
+
+const normalizeAccountFromStatus = (state, status) => {
+  state = normalizeAccount(state, status.get('account'));
+
+  if (status.getIn(['reblog', 'account'])) {
+    state = normalizeAccount(state, status.getIn(['reblog', 'account']));
+  }
+
+  return state;
+};
+
+const normalizeAccountsFromStatuses = (state, statuses) => {
+  statuses.forEach(status => {
+    state = normalizeAccountFromStatus(state, status);
+  });
+
+  return state;
+};
+
+const initialState = Immutable.Map();
+
+export default function accounts(state = initialState, action) {
+  switch(action.type) {
+    case ACCOUNT_SET_SELF:
+    case ACCOUNT_FETCH_SUCCESS:
+    case FOLLOW_SUBMIT_SUCCESS:
+      return normalizeAccount(state, Immutable.fromJS(action.account));
+    case SUGGESTIONS_FETCH_SUCCESS:
+    case FOLLOWERS_FETCH_SUCCESS:
+    case FOLLOWING_FETCH_SUCCESS:
+      return normalizeAccounts(state, Immutable.fromJS(action.accounts));
+    case TIMELINE_REFRESH_SUCCESS:
+    case TIMELINE_EXPAND_SUCCESS:
+    case ACCOUNT_TIMELINE_FETCH_SUCCESS:
+    case ACCOUNT_TIMELINE_EXPAND_SUCCESS:
+      return normalizeAccountsFromStatuses(state, Immutable.fromJS(action.statuses));
+    case TIMELINE_UPDATE:
+    case REBLOG_SUCCESS:
+    case FAVOURITE_SUCCESS:
+    case UNREBLOG_SUCCESS:
+    case UNFAVOURITE_SUCCESS:
+    case STATUS_FETCH_SUCCESS:
+      return normalizeAccountFromStatus(state, Immutable.fromJS(action.status));
+    default:
+      return state;
+  }
+};