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<?php

/**

* Copyright 2016 Google Inc.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

/**

* Google Cloud Endpoints sample application.

*

* Demonstrates how to create a simple echo API as well as how to deal with

* various authentication methods.

*/

use Silex\Application;

use Symfony\Component\HttpFoundation\Request;

// create the Silex application

$app = new Application();

$app->get('/', function () use ($app) {

// Simple echo service.

$url = 'https://github.com/GoogleCloudPlatform/php-docs-samples/blob/master/endpoints/getting-started/README.md';

$welcome = sprintf(

'<h1>Welcome to the Endpoints getting started tutorial!</h1>' .

'<p>Please see the <a href="%s">README</a> for instructions</p>',

$url

);

return $welcome;

});

$app->post('/echo', function () use ($app) {

// Simple echo service.

$message = $app['request']->get('message');

return $app->json(['message' => $message]);

});

$app->get('/auth/info/googlejwt', function () use ($app) {

// Auth info with Google signed JWT.

return $app->json($app['auth_info']);

});

$app->get('/auth/info/googleidtoken', function () use ($app) {

// Auth info with Google ID token.

return $app->json($app['auth_info']);

});

$app['auth_info'] = function () use ($app) {

/** @var Symfony\Component\HttpFoundation\Request $request */

$request = $app['request'];

// Retrieves the authenication information from Google Cloud Endpoints.

$encoded_info = $request->headers->get('X-Endpoint-API-UserInfo');

if ($encoded_info) {

$info_json = utf8_decode(base64_decode($encoded_info));

$user_info = json_decode($info_json);

} else {

$user_info = ['id' => 'anonymous'];

}

return $user_info;

};

// Accept JSON requests

$app->before(function (Request $request) {

if (0 === strpos($request->headers->get('Content-Type'), 'application/json')) {

$data = json_decode($request->getContent(), true);

$request->request->replace(is_array($data) ? $data : array());

}

});

return $app;