fb_instant_articles_api.module in Facebook Instant Articles 7

Hook implementations for Facebook Instant Articles API module.

File

modules/fb_instant_articles_api/fb_instant_articles_api.module

<?php

/**
 * @file
 * Hook implementations for Facebook Instant Articles API module.
 */

/**
 * Implements hook_menu().
 */
function fb_instant_articles_api_menu() {
  $items['admin/config/services/fb-instant-articles/api'] = array(
    'title' => 'Facebook Instant Articles API',
    'description' => 'API settings for Facebook Instant Articles.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'fb_instant_articles_api_settings',
    ),
    'access arguments' => array(
      'administer fb_instant_articles_api',
    ),
    'file' => 'includes/admin.inc',
  );

  // Callback to handle Facebook Login
  $items['admin/config/services/fb-instant-articles/api/login'] = array(
    'title' => 'Facebook Login',
    'description' => 'Callback that executes right after login in with Facebook.',
    'page callback' => 'fb_instant_articles_api_facebook_login',
    'access arguments' => array(
      'administer fb_instant_articles_api',
    ),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implements hook_permission().
 */
function fb_instant_articles_api_permission() {
  $permissions = array();
  $permissions['administer fb_instant_articles_api'] = array(
    'title' => t('Administer Facebook Instant Articles API'),
  );
  return $permissions;
}

/**
 * Callback to handle Facebook Login for this module.
 */
function fb_instant_articles_api_facebook_login() {
  $fb = new Facebook\Facebook([
    'app_id' => variable_get('fb_instant_articles_api_app_id', ''),
    'app_secret' => variable_get('fb_instant_articles_api_app_secret', ''),
    'default_graph_version' => 'v2.5',
  ]);
  $helper = $fb
    ->getRedirectLoginHelper();

  // Grab the user access token based on callback response and report back an
  // error if we weren't able to get one.
  try {
    $access_token = $helper
      ->getAccessToken();
  } catch (Facebook\Exceptions\FacebookResponseException $e) {
    $error_msg = 'We received the following error while attempting to authenticate your Facebook account: ' . $e
      ->getMessage();
    drupal_set_message($error_msg, 'error');
    drupal_goto('admin/config/services/fb-instant-articles/api');
    exit;
  } catch (Facebook\Exceptions\FacebookSDKException $e) {
    $error_msg = 'We received the following error while attempting to authenticate your Facebook account: ' . $e
      ->getMessage();
    drupal_set_message($error_msg, 'error');
    drupal_goto('admin/config/services/fb-instant-articles/api');
    exit;
  }
  if ($access_token == NULL) {
    $error_msg = 'We failed to authenticate your Facebook account with this module. Please try again.';
    drupal_set_message($error_msg, 'error');
    drupal_goto('admin/config/services/fb-instant-articles/api');
    exit;
  }

  // Confirm that the person granted the necessary permissions before proceeding
  $permissions = $fb
    ->get('/me/permissions', $access_token)
    ->getGraphEdge();

  //  $rejected_permissions = array();
  $rejected_permissions = '';
  foreach ($permissions as $permission) {
    if ($permission['status'] != 'granted') {
      $rejected_permissions = $rejected_permissions . ' ' . $permission['permission'];
    }
  }
  if ($rejected_permissions != '') {
    $error_msg = 'You did not grant the following required permissions in the Facebook authentication process: ' . $rejected_permissions . '. Please try again.';
    drupal_set_message($error_msg, 'error');
    drupal_goto('admin/config/services/fb-instant-articles/api');
    exit;
  }

  // Store this user access token to the database
  variable_set('fb_instant_articles_api_access_token', $access_token
    ->getValue());
  drupal_goto('admin/config/services/fb-instant-articles/api');
}

Functions

Name	Description
fb_instant_articles_api_facebook_login	Callback to handle Facebook Login for this module.
fb_instant_articles_api_menu	Implements hook_menu().
fb_instant_articles_api_permission	Implements hook_permission().