# Spring Boot, Ionic, and Stormpath

This demo script shows pre-recorded IntelliJ Live Template shortcuts to build an Ionic and Spring Boot app. **Prerequisites**: Java 8, Node.js, Maven, a [Stormpath Account](https://api.stormpath.com/register), and an `apiKey.properties` file in `~/stormpath/`.

## Spring Boot API

Create your Spring Boot API project using [start.spring.io](https://start.spring.io).

```
http https://start.spring.io/starter.zip \
dependencies==data-jpa,data-rest,h2,web,devtools,security,stormpath -d
```

1. Run the application with `./mvnw spring-boot:run`. Create a `Beer` entity class in `src/main/java/com/example/beer`. → **boot-entity**
2. Create a JPA Repository to manage the `Beer` entity (tip: `@RepositoryRestResource`). → **boot-repository**
3. Create a CommandLineRunner to populate the database. → **boot-command**
4. Add default data in the `run()` method. → **boot-add**
5. Create a `BeerController` for your REST API. Add some business logic that results in a `/good-beers` endpoint. → **boot-controller**
6. Add a `/get-beers` mapping that filters out beers that aren't great. → **boot-good**

Access the API using `http localhost:8080/good-beers --auth <user>:<password>`.

## Create Ionic App

Install Ionic and Cordova: 

```
yarn global add cordova ionic
```

From a terminal window, create a new application using the following command:

```
ionic start ionic-beer --v2
cd ionic-beer
ionic serve
```

## Upgrade to Angular 2.3

```json
"dependencies": {
  "@angular/common": "2.3.1"
```

Run `yarn` to update to these versions.

## Install Ionic Pages for Stormpath

Install [Ionic pages for Stormpath](https://github.com/stormpath/stormpath-sdk-angular-ionic):

```
yarn add angular-stormpath-ionic
```

Modify `src/app/app.module.ts` to define a `stormpathConfig` function that configures the `endpointPrefix` to point to `http://localhost:8080`. Import `StormpathModule`, `StormpathIonicModule`, and override the provider of `StormpathConfiguration`. You’ll also need to append Stormpath's pre-built Ionic pages to `entryComponents`. → **stormpath-config**

To render a login page before users can view the application, modify `src/app/app.component.ts` to use the `Stormpath` service and navigate to Stormpath's `LoginPage` if the user is not authenticated. → **io-app**

```typescript
stormpath.user$.subscribe(user => {
  if (!user) {
    this.rootPage = LoginPage;
  } else {
    this.rootPage = TabsPage;
  }
});
```

If you run `ionic serve`, you’ll likely see a CORS error in your browser’s console. To fix this, open your Spring Boot application's `src/main/resources/application.properties` and add the following line.

```
stormpath.web.cors.allowed.originUris = http://localhost:8100,file://
```

Restart Spring Boot and your Ionic app. 

In `src/pages/home.html`, add a logout link to the header and a paragraph in the content section that shows the currently logged in user. → **io-logout** and **io-username**

Change the body of `home.ts` to retrieve `user$` from the `Stormpath` service and define the `logout()` method. → **io-home**

If you’re logged in, you should see a screen with a logout button and the name of the currently logged in user.

The `LoginPage` tries to auto-focus onto the `email` field when it loads. Tell Cordova it’s OK to display the keyboard without user interaction by adding the following to `config.xml` in the root directory. → **io-keyboard**

```xml
<preference name="KeyboardDisplayRequiresUserAction" value="false"/>
```

Check your changes into Git.

```
git add .
git commit -m "Add Stormpath"
```

## Build a Good Beers UI

1. Run `ionic generate page beer` to create a component and a template to display the list of good beers. 
2. Add `BeerPage` to the `declarations` and `entryComponent` lists in `app.module.ts`.
3. Run `ionic generate provider beer-service` to create a service to fetch the beer list from the Spring Boot API.
4. Change `src/providers/beer-service.ts` to use have a `getGoodBeers()` method. → **io-beer-service**
5. Modify `beer.html` to show the list of beers. → **io-beer-list**
6. Update `beer.ts` to import `BeerService` and add as a provider. Call the `getGoodBeers()` method in the `ionViewDidLoad()` lifecycle method. → **io-get-good-beers**
7. To expose this page on the tab bar, add it to `tabs.ts`. Update `tabs.html` too!

Add some fun with Giphy! Run `ionic generate provider giphy-service`. → **ng-giphy-service**

Update `beer.ts` to take advantage of `GiphyService`. → **ng-giphy-foreach**

Update `beer.html` to display the image retrieved. → **io-avatar**

If everything works as expected, you should see a page with a list of beers and images.

### Add a Modal for Editing

Change the header in `beer.html` to have a button that opens a modal to add a new beer. → **io-open-modal**

In this same file, change `<ion-item>` to have a click handler for opening the modal for the current item.

```html
<ion-item (click)="openModal({id: beer.id})">
```

Add `ModalController` as a dependency in `BeerPage` and add an `openModal()` method. → **io-open-modal-ts**

This won't compile because `BeerModalPage` doesn't exist. Create `beer-modal.ts` in the same directory. → **io-beer-modal**

Create `beer-modal.html` as a template for this page. → **io-beer-modal-html**

Add `BeerModalPage` to the `declarations` and `entryComponent` lists in `app.module.ts`.

You'll also need to modify `beer-service.ts` to have `get()` and `save()` methods. → **io-get-save**

### Add Swipe to Delete

To add swipe-to-delete functionality on the list of beers, open `beer.html` and make it so `<ion-item-sliding>` wraps `<ion-item>` and contains the `*ngFor`. → **io-swipe**

Add a `remove()` method to `beer.ts`. → **io-remove**

Add `toastCtrl: ToastController` as a dependency in the constructor so everything compiles.

After making these additions, you should be able to add, edit and delete beers.

## PWAs with Ionic

Run the [Lighthouse Chrome extension](https://developers.google.com/web/tools/lighthouse/) on this application. To register a service worker, and improve the app’s score, uncomment the `serviceWorker` block in `index.html`.

After making this change, the score should improve. In my tests, it increased to 69/100.  

If you refresh the app and Chrome doesn’t prompt you to install the app (a PWA feature), you probably need to turn on a couple of features. 

```
chrome://flags/#bypass-app-banner-engagement-checks
chrome://flags/#enable-add-to-shelf
```

After enabling these flags, you’ll see an error in your browser’s console about `assets/imgs/logo.png` not being found. This files is referenced in `src/manifest.json`. You can fix this by copying a 512x512 PNG into this location or by modifying `manifest.json` accordingly.

## Deploy to a Mobile Device

To see how your application will look on different devices you can run `ionic serve --lab`. The `--lab` flag opens opens a page in your browser that lets you see how your app looks on different devices. 

### iOS

To emulate or deploy to an iOS device, you’ll need a Mac and a fresh installation of [Xcode](https://developer.apple.com/xcode/). If you’d like to build iOS apps on Windows, Ionic offers an [Ionic Package](http://ionic.io/cloud#packaging) service.

```
ionic platform add ios
```

You’ll need to run `ionic emulate ios` to open your app in Simulator.

The biggest problem I found when running the app in Simulator was that it was difficult to get the keyboard to popup. To workaround this, I used Edit > Hardware > Keyboard > Toggle Software Keyboard when I needed to type text in a field.

To deploy the app to an iPhone, start by plugging your iOS device into your computer. Then run the following commands to install ios-deploy/ios-sim, build the app, and run it on your device.

```
npm install -g ios-deploy ios-sim
ionic build ios --prod
cd platforms/ios/
open ionic-auth.xcodeproj
```

Select your phone as the target in Xcode and click the play button to run your app. The first time you do this, Xcode may spin for a while with a “Processing symbol files” message at the top.

Once you’re configured your phone, computer, and Apple ID to work, you should be able to open the app and see login, register, and forgot password screens.

### Android

To emulate or deploy to an Android device, you’ll first need to install [Android Studio](https://developer.android.com/studio/index.html). As part of the install, it will show you where it installed the Android SDK. Set this path as an ANDROID_HOME environment variable. On a Mac, it should be `~/Library/Android/sdk/`.

To deploy to the Android emulator, add support for it to the ionic-auth project using the `ionic` command.

```
ionic platform add android
```

If you run `ionic emulate android` you’ll get instructions from about how to create an emulator image.

```
Error: No emulator images (avds) found.
1. Download desired System Image by running: /Users/mraible/Library/Android/sdk/tools/android sdk
2. Create an AVD by running: /Users/mraible/Library/Android/sdk/tools/android avd
HINT: For a faster emulator, use an Intel System Image and install the HAXM device driver
```

I ran the first suggestion and downloaded my desired system image. Then I ran the second command and created an AVD with the following settings:

```
AVD Name: TestPhone
Device: Nexus 5
Target: Android 7.1.1
CPU/ABI: Google APIs Intel Axom (x86_64)
Skin: Skin with dynamic hardware controls
```

After performing these steps, I was able to run `ionic emulate android` and see my app running in the AVD.