REST API for your WP7 App

REST API for your WP7 App Agnius Paradnikas @Agnius101

About me • .NET web developer for more than 6 years. • Recently focused on mobile app development. • Graduated KTU. • Created first WP7 app more than 1 year ago. • Now developing Weepin WP7 app on my spare time.

• Weepin won 2-nd place in additional round in WP7 app challenge. • At the moment is the first in The Best App category in LOGIN2012.

REST API • Stands for REpresentational State Transfer. • Client-server: separation of concerns. • Statless: no state is saved on server, if needed it is saved on client. • Cacheable: clients can cache responses.

REST API • Easy to scale out. • Easy to build, maintain and modify. • Less overhead - higher performance. • Implementation does not require high technical skill level.

REST API example http://www.domain.com/api/names?count=2 { "Names": [ { "NameHTML": "<b>Ipr</b>amol", "NameText": "Ipramol", "IsShortname": true }, { "NameHTML": "<b>Ipr</b>atropiumbromid Arrow", "NameText": "Ipratropiumbromid Arrow", "IsShortname": false } ] }

• Simple REST and HTTP API Client for .NET. • No need to know about low-level networking. • Covers all needed cases like: – Async requests (all requests in WP7 should be async!); – Data mapping; – Authentication; – JSON/XML serialization; – Implement your own custom serialization; – Etc.

Getting Started • Add reference via NuGet. • And you’re done.

TodoApp DEMO and Example http://todoapp.agnius.lt/api/todos [ { "id": "1", "todo": "Make dinner.", "username": "Agnius101", "created": "2012-04-09", }, { "id": "2", "todo": "Finish WP7 presentation", "username": "Agnius101", "created": "2012-04-13", ] }, ... ]

var client = new RestClient(); client.BaseUrl = "http://todoapp.agnius.lt/api"; RestRequest request = new RestRequest(); request.Resource = "todos"; request.RequestFormat = DataFormat.Json; request.Method = Method.GET;

client.ExecuteAsync<List<TodoModel>>(request, (response) => { if (response.ResponseStatus != ResponseStatus.Error && response.StatusCode == System.Net.HttpStatusCode.OK) { this.todosListBox.ItemsSource = response.Data; } else { MessageBox.Show("Ups! Error occured."); } });

REST API Server side • Choose any technology you want: – .NET – JAVA – PHP – Python – Ruby – and so on…

• Cheap and easy way to implement server side REST API. • For PHP and MySQL. • Supports all needed tools to build REST API: – MVC – Routing – ORM – Logging & Profiling – and so on…

Getting Started • Go to http://www.doophp.com/ • Download latest version. • Create MySQL database tables. • Make configuration changes in: – appprotectedconfigcommon.conf.php – appprotectedconfigdb.conf.php

Define routes appprotectedconfigroutes.conf.php <?php $route['get']['/todos'] = array('MainController', 'getAll'); $route['get']['/todos/:id'] = array('MainController', 'getById'); $route['post']['/todos/new'] = array('MainController', 'createNew'); $route['post']['/todos/:id'] = array('MainController', 'deleteTodo'); ?>

Create models appprotectedmodelTodo.php <?php class Todo{ public $id; public $todo; public $username; public $created; public $_table = 'todos'; public $_primarykey = 'id'; public $_fields = array('id','user_id','todo','username', 'created'); } ?>

Implement controllers appprotectedcontrollerMainController.php <?php class MainController extends DooController{ public function getAll(){ $todos = $this->db()->find('Todo'); $result = json_encode($todos); $this->setContentType('json', 'utf-8'); echo $result; } } ?>

Upload everything to the server If you are lucky everything should work.

My own experience • Never try to do everything yourself. • Be fast. • Think how to add Facebook and YouTube effect to your app. • Read carefully certification requirements before submitting your app.

How can I help you • Support creating WP7 app from scratch. • Setup REST API and DB in both .NET and PHP technologies. • Share my experience if you decide to move with advanced techniques like MvvM. • Give advice on usability. • Give advice how to improve functionality. • I don’t have experience creating games on XNA.

Follow me on Twitter @Agnius101

REST API for your WP7 App

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