added redux

client/js/redux/reducers.js

@@ -0,0 +1,37 @@
+//just using one reducer - use combineReducers from redux to modularize things
+import {combineReducers} from 'redux';
+import {routerReducer} from 'react-router-redux';
+
+//import typs
+import * as types from './constants';
+
+//defaults - 
+const defaultState = {
+    preview: {posts: []},
+    filteredPreview: {posts: []}
+};
+
+//default reducer
+function reducer(state = defaultState, action){
+    //every reducer gets called when an action is called - we check for the type to modify our state accordingly
+    switch (action.type){
+        case types.INIT_PREVIEW:
+            return Object.assign({}, state, {
+                preview: Object.assign({}, state.preview, action.posts)
+            });
+        case types.FILTER_PREVIEW:
+            return Object.assign({}, state, {
+                filteredPreview: Object.assign({}, state.filteredPreview, action.posts)
+            })
+    }
+    
+    //return present state if no actions get called
+    return state;
+}
+
+const allReducers = combineReducers({
+    reducer,
+    routing: routerReducer
+});
+
+export default allReducers;