contiago-toolbar/app/reducers.js

One of the options for outputting content from contiago xml-server

import { fromJS } from 'immutable';
import { combineReducers } from 'redux-immutable';
import { LOCATION_CHANGE, PREVIOUS_LOCATION } from 'utils/router/constants';

import globalReducer from 'containers/App/reducer';
import languageProviderReducer from 'containers/LanguageProvider/reducer';

const routeInitialState = fromJS({
  location: 'Home',
  history: [],
});


function routeReducer(state = routeInitialState, action) {
  switch (action.type) {
    case LOCATION_CHANGE:
      return state
        .set('location', action.newRoute)
        .set('history', [...state.toJS().history, action.newRoute]);
    case PREVIOUS_LOCATION: {
      const history = state.toJS().history;
      const previousLocation = history[history.length - 2];
      const newHistory = [...history.slice(0, history.length - 1)];
      return state
        .set('location', previousLocation)
        .set('history', newHistory);
    }
    default:
      return state;
  }
}

export default function createReducer(injectedReducers) {
  return combineReducers({
    route: routeReducer,
    global: globalReducer,
    language: languageProviderReducer,
    ...injectedReducers,
  });
}