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<?php
/**
* AMP compatibility for SmartMag - extend official AMP plugin by Automattic
*/
class Bunyad_Theme_Amp
{
public function __construct()
{
add_action('wp', array($this, 'setup'));
// AMP plugin active?
if (defined('AMP__VERSION')) {
add_filter('bunyad_theme_options', array($this, 'add_theme_options'));
}
if (is_admin()) {
// Remove customizer link for AMP plugin
remove_action('admin_menu', 'amp_add_customizer_link');
}
}
/**
* Setup hooks for AMP plugin by Automattic
*/
public function setup()
{
// Only if it's AMP
if (!function_exists('is_amp_endpoint') OR !is_amp_endpoint()) {
return;
}
// Load required files
require_once locate_template('inc/amp/walker.php');
require_once locate_template('inc/amp/ads.php');
$GLOBALS['content_width'] = 702;
add_filter('amp_post_template_dir', array($this, 'template_dir'));
add_filter('amp_post_template_data', array($this, 'setup_data'));
// Add analytics if available
add_filter('amp_post_template_analytics', array($this, 'add_analytics'));
}
/**
* Templates directory
*/
public function template_dir($path) {
// Check child theme first
$path = get_stylesheet_directory() . '/amp';
if (!file_exists($path)) {
$path = get_template_directory() . '/amp';
}
return $path;
}
/**
* Setup and extend post data
*/
public function setup_data($data)
{
$data['font_urls'] = array();
/**
* Process and set featured video data
*/
if (is_single() && Bunyad::posts()->meta('featured_video')) {
require_once locate_template('inc/amp/content.php');
$amp_content = new Bunyad_Theme_Amp_Content(
Bunyad::posts()->meta('featured_video'),
array(
'AMP_Twitter_Embed_Handler' => array(),
'AMP_YouTube_Embed_Handler' => array(),
'AMP_Instagram_Embed_Handler' => array(),
'AMP_Vine_Embed_Handler' => array(),
'AMP_Facebook_Embed_Handler' => array(),
'AMP_Gallery_Embed_Handler' => array(),
),
array(
'AMP_Video_Sanitizer' => array(),
'AMP_Audio_Sanitizer' => array(),
'AMP_Iframe_Sanitizer' => array(
'add_placeholder' => true,
),
),
array(
'content_max_width' => $data['content_max_width'],
)
);
// Add relevant amp scripts for the components necessary
$data['amp_component_scripts'] = array_merge(
$data['amp_component_scripts'],
$amp_content->get_amp_scripts()
);
// Get the content
$data['featured_video'] = $amp_content->get_amp_content();
}
/**
* Setup logo schema
*/
$data['the_logo'] = $logo = $this->get_logo();
if (!empty($logo)) {
$data['metadata']['publisher']['logo'] = array(
'@type' => 'ImageObject',
'url' => $logo['url'],
'height' => $logo['height'],
'width' => $logo['width'],
);
}
return $data;
}
/**
* Add Analytics Code
*
* @param array $analytics
*/
public function add_analytics($analytics)
{
if (!Bunyad::options()->amp_analytics_ga) {
return $analytics;
}
$analytics = (array) $analytics;
// https://developers.google.com/analytics/devguides/collection/amp-analytics/
$analytics['amp-googleanalytics'] = array(
'type' => 'googleanalytics',
'attributes' => array(),
'config_data' => array(
'vars' => array(
'account' => Bunyad::options()->amp_analytics_ga
),
'triggers' => array(
'trackPageview' => array(
'on' => 'visible',
'request' => 'pageview',
),
),
),
);
return $analytics;
}
/**
* AMP Logo
*
* @param boolean $fallback Fallback to desktop logo if others missing?
*/
public function get_logo()
{
$logo = false;
// amp_logo has higher priority
$logo_image = Bunyad::options()->image_logo_mobile;
if (Bunyad::options()->amp_logo) {
$logo_image = Bunyad::options()->amp_logo;
}
if (!empty($logo_image)) {
$id = attachment_url_to_postid($logo_image);
if ($id) {
list($url, $width, $height) = wp_get_attachment_image_src($id, 'full');
// 2x logo is expected
$logo = array(
'url' => $url,
'width' => $width / 2,
'height' => $height / 2,
);
}
}
return $logo;
}
/**
* Add theme options for AMP
*/
public function add_theme_options($options)
{
$options[] = include locate_template('inc/amp/options.php');
return $options;
}
}
// init and make available in Bunyad::get('amp')
Bunyad::register('amp', array(
'class' => 'Bunyad_Theme_Amp',
'init' => true
));