Google API

Installation

$ php composer.phar require isometriks/google-api-bundle dev-master

Add routing:

isometriks_google_api:
    resource: "@IsometriksGoogleApiBundle/Resources/config/routing.yml"
    prefix: /google

Note: Your redirect_uri below and in the developer console should match that of the isometriks_google_redirect route. So if you do as above, then redirect_uri below in dev environment should be: http://example.com/app_dev.php/google/redirect and without app_dev.php for production. redirect_route will generate redirect_uri.

Configuration:

isometriks_google_api:
    client:
        application_name:       ~
        client_id:              ~
        client_secret:          ~
        redirect_route:         ~
        developer_key:          ~
        include_granted_scopes: false
        access_type:            online # or offline
    service:
        storage:                isometriks_google_api.storage.session

Controller Annotations

<?php

namespace AppBundle\Controller;

use Isometriks\Bundle\GoogleApiBundle\Annotation\GoogleScope;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

/**
 * @GoogleScope({"gmail.readonly"})
 */
class MyController extends Controller
{
    /**
     * @GoogleScope({"analytics.readonly", "calendar.readonly"})
     */
    public function indexAction()
    {
        // Will only execute if we have all 3 permissions

        // Use the services available in the Google PHP API
        $client = $this->get('isometriks_google_api.client');
        $analytics = new \Google_Service_Analytics($client);

        var_dump($analytics->management_accounts->listManagementAccounts()); // etc
    }
}

Without Annotations

<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class MyController extends Controller
{
    /**
     * @Route("/", name="homepage")
     */
    public function indexAction()
    {
        $scopeManager = $this->get('isometriks_google_api.scope_manager');

        if (!$scopeManager->hasScope('calendar.readonly')) {
            return $this->redirect($scopeManager->obtainScopeUrl(
                array('calendar.readonly'),
                $this->generateUrl('homepage')
            ));
        }

        // obtainScopeUrl(array $scopes, $returnUrl)
    }
}

Token Storage

By default the system will use sessions to store the tokens. If you are going to be using refresh tokens (type = offline) then this won't work well as destroying the session will destroy your refresh token since you only get one the very first time you authorize. In this case you can create your own storage, or if you need to store tokens for users we provide an abstract class to help with that.

Example of User storage:

<?php

namespace AppBundle\Storage;

use Isometriks\Bundle\GoogleApiBundle\Storage\UserStorage as BaseUserStorage;

class UserStorage extends BaseUserStorage
{
    public function getToken()
    {
        return $this->getUser()->getToken();
    }

    public function hasToken()
    {
        return $this->getUser() && $this->getUser()->getToken();
    }

    public function removeToken()
    {
        $this->getUser()->setToken(null);

        // Persist Doctrine / Propel etc..
    }

    public function setToken($token)
    {
        $this->getUser()->setToken($token);

        // Persist Doctrine / Propel etc..
    }
}

And remember to change the config:

isometriks_google_api:
    service:
        storage: app_bundle.storage.user_storage

You can extend the abstract service we provide: isometriks_google_api.storage.user_storage As noted in the above class you will need to either add setter injection or add an argument to the constructor so you can make sure that the user is persisted in your ORM / other implementation.

Display a "Connect" screen

You can easily attach into the events to display a "connect" button view before sending the user to Google for the token using the Events::OAUTH_PRE_AUTH event:

<?php

// ...

class PreAuthListener implements EventSubscriberInterface
{
    protected $twig;

    public function __construct(\Twig_Environment $twig)
    {
        $this->twig = $twig;
    }

    public function onPreAuth(ClientEvent $event)
    {
        // Or use your own template, ours is mostly just an example
        $content = $this->twig->render('IsometriksGoogleApiBundle:OAuth:connect.html.twig', array(
            'auth_url' => $event->getClient()->createAuthUrl(),
        ));

        $event->setResponse(new Response($content));
    }

    public static function getSubscribedEvents()
    {
        return array(
            Events::OAUTH_PRE_AUTH => 'onPreAuth',
        );
    }
}