Add Routing duck to track location changes

src/Routes.js

@@ -5,6 +5,7 @@ import { connect } from 'react-redux';
 import { Switch, Route, withRouter } from 'react-router-dom';
 import { NotFoundPage } from './containers';
 import { NamedRedirect } from './components';
+import { locationChanged } from './ducks/Routing.duck';
 import * as propTypes from './util/propTypes';
 import * as log from './util/log';
 
@@ -34,10 +35,17 @@ const callLoadData = props => {
   }
 };
 
+const handleLocationChanged = (dispatch, location) => {
+  const { pathname, search, hash } = location;
+  const canonicalUrl = `${pathname}${search}${hash}`;
+  dispatch(locationChanged(location, canonicalUrl));
+};
+
 class RouteComponentRenderer extends Component {
   componentDidMount() {
     // Calling loadData on initial rendering (on client side).
     callLoadData(this.props);
+    handleLocationChanged(this.props.dispatch, this.props.location);
   }
 
   componentWillReceiveProps(nextProps) {
@@ -45,6 +53,7 @@ class RouteComponentRenderer extends Component {
     // This makes it possible to use loadData as default client side data loading technique.
     // However it is better to fetch data before location change to avoid "Loading data" state.
     callLoadData(nextProps);
+    handleLocationChanged(nextProps.dispatch, nextProps.location);
   }
 
   render() {

src/ducks/Routing.duck.js

@@ -0,0 +1,32 @@
+// ================ Action types ================ //
+
+export const LOCATION_CHANGED = 'app/Routing/LOCATION_CHANGED';
+
+// ================ Reducer ================ //
+
+const initialState = {
+  currentLocation: null,
+  currentCanonicalUrl: null,
+};
+
+export default function routingReducer(state = initialState, action = {}) {
+  const { type, payload } = action;
+  switch (type) {
+    case LOCATION_CHANGED:
+      return {
+        ...state,
+        currentLocation: payload.location,
+        currentCanonicalUrl: payload.canonicalUrl,
+      };
+
+    default:
+      return state;
+  }
+}
+
+// ================ Action creators ================ //
+
+export const locationChanged = (location, canonicalUrl) => ({
+  type: LOCATION_CHANGED,
+  payload: { location, canonicalUrl },
+});

src/ducks/index.js

@@ -6,20 +6,22 @@
 
 import { reducer as form } from 'redux-form';
 import Auth from './Auth.duck';
+import EmailVerification from './EmailVerification.duck';
 import FlashNotification from './FlashNotification.duck';
 import LocationFilter from './LocationFilter.duck';
+import Routing from './Routing.duck';
 import UI from './UI.duck';
 import marketplaceData from './marketplaceData.duck';
 import user from './user.duck';
-import EmailVerification from './EmailVerification.duck';
 
 export {
-  form,
   Auth,
+  EmailVerification,
   FlashNotification,
   LocationFilter,
+  Routing,
   UI,
+  form,
   marketplaceData,
   user,
-  EmailVerification,
 };