we have persistence!

.gitignore

@@ -2,4 +2,5 @@ node_modules
 dist
 lib
 *.log
-.DS_Store
+.DS_Store
+tmp.json

index.html

@@ -116,6 +116,12 @@
             Redux 4: Combine Reducers
           </a>
         </li>
+        <li class="Tile">
+          <a target="_blank" href="/step2-09/" class="Tile-link">
+            Step 9<br />
+            Redux 5: Service Calls
+          </a>
+        </li>
       </ul>
     </div>
     <div class="Container">

server/index.js

@@ -1,4 +1,5 @@
 // @ts-check
+const fs = require('fs');
 const express = require('express');
 const bodyParser = require('body-parser');
 const cors = require('cors');
@@ -6,6 +7,20 @@ const app = express();
 
 const store = {
   /** @type {any} */
+  read() {
+    if (fs.existsSync('tmp.json')) {
+      store.todos = JSON.parse(fs.readFileSync('tmp.json').toString());
+    } else {
+      store.todos = {};
+    }
+
+    return store.todos;
+  },
+
+  save() {
+    fs.writeFileSync('tmp.json', JSON.stringify(store.todos));
+  },
+
   todos: {}
 };
 
@@ -13,24 +28,28 @@ app.use(bodyParser.json());
 app.use(cors());
 
 app.get('/todos', (req, res) => {
-  res.json(store.todos);
+  res.json(store.read());
 });
 
 app.put('/todos/:id', (req, res) => {
   store.todos[req.params.id] = req.body;
+  store.save();
   res.json('ok');
 });
 
 app.post('/todos/:id', (req, res) => {
   store.todos[req.params.id] = req.body;
+  store.save();
 });
 
 app.delete('/todos/:id', (req, res) => {
   delete store.todos[req.params.id];
+  store.save();
 });
 
 app.post('/todos', req => {
   store.todos = req.body;
+  store.save();
 });
 
 app.get('/hello', (req, res) => {

step2-09/src/index.tsx

@@ -1,30 +1,35 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 import { reducer } from './reducers';
-import { createStore, compose } from 'redux';
+import { applyMiddleware, createStore, compose } from 'redux';
+import thunk from 'redux-thunk';
 import { Provider } from 'react-redux';
 import { TodoApp } from './components/TodoApp';
-import { actions } from './actions';
 import { initializeIcons } from '@uifabric/icons';
-import { Store } from './store';
+import { Store, FilterTypes } from './store';
+import * as service from './service';
 
 /* Goop for making the Redux dev tool to work */
 declare var window: any;
 const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
 function createStoreWithDevTool(reducer, initialStore?: Store) {
-  return createStore(reducer, initialStore, composeEnhancers());
+  return createStore(reducer, initialStore, composeEnhancers(applyMiddleware(thunk)));
 }
 
-const store = createStoreWithDevTool(reducer);
+(async () => {
+  const preloadStore = {
+    todos: await service.getAll(),
+    filter: 'all' as FilterTypes
+  };
 
-store.dispatch(actions.addTodo('hello'));
-store.dispatch(actions.addTodo('world'));
+  const store = createStoreWithDevTool(reducer, preloadStore);
 
-initializeIcons();
+  initializeIcons();
 
-ReactDOM.render(
-  <Provider store={store}>
-    <TodoApp />
-  </Provider>,
-  document.getElementById('app')
-);
+  ReactDOM.render(
+    <Provider store={store}>
+      <TodoApp />
+    </Provider>,
+    document.getElementById('app')
+  );
+})();

webpack.config.js

@@ -72,6 +72,9 @@ module.exports = function() {
     devServer: {
       contentBase: path.resolve(__dirname),
       watchContentBase: true,
+      watchOptions: {
+        ignored: /tmp.json/
+      },
       hot: false,
       stats: 'errors-only',
       overlay: true,