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<?php
namespace Automattic\Jetpack_Boost\Modules\Optimizations\Image_CDN;
use Automattic\Jetpack\Schema\Schema;
use Automattic\Jetpack\WP_JS_Data_Sync\Data_Sync;
use Automattic\Jetpack_Boost\Contracts\Changes_Output_After_Activation;
use Automattic\Jetpack_Boost\Contracts\Has_Data_Sync;
use Automattic\Jetpack_Boost\Contracts\Is_Always_On;
use Automattic\Jetpack_Boost\Contracts\Sub_Feature;
use Automattic\Jetpack_Boost\Lib\Premium_Features;
class Quality_Settings implements Sub_Feature, Is_Always_On, Has_Data_Sync, Changes_Output_After_Activation {
public function setup() {
add_filter( 'jetpack_photon_pre_args', array( $this, 'add_quality_args' ), 10, 2 );
}
public static function get_slug() {
return 'image_cdn_quality';
}
public static function is_available() {
return Premium_Features::has_feature( Premium_Features::IMAGE_CDN_QUALITY );
}
public function register_data_sync( Data_Sync $instance ) {
$image_cdn_quality_schema = Schema::as_assoc_array(
array(
'jpg' => Schema::as_assoc_array(
array(
'quality' => Schema::as_number(),
'lossless' => Schema::as_boolean(),
)
),
'png' => Schema::as_assoc_array(
array(
'quality' => Schema::as_number(),
'lossless' => Schema::as_boolean(),
)
),
'webp' => Schema::as_assoc_array(
array(
'quality' => Schema::as_number(),
'lossless' => Schema::as_boolean(),
)
),
)
)->fallback(
array(
'jpg' => array(
'quality' => 89,
'lossless' => false,
),
'png' => array(
'quality' => 80,
'lossless' => false,
),
'webp' => array(
'quality' => 80,
'lossless' => false,
),
)
);
$instance->register( 'image_cdn_quality', $image_cdn_quality_schema );
}
public static function get_change_output_action_names() {
return array( 'update_option_' . JETPACK_BOOST_DATASYNC_NAMESPACE . '_image_cdn_quality' );
}
/**
* Add quality arg to existing photon args.
*
* @param array $args - Existing photon args.
*
* @return mixed
*/
public function add_quality_args( $args, $image_url ) {
$quality = $this->get_quality_for_image( $image_url );
if ( $quality !== null ) {
$args['quality'] = $quality;
}
return $args;
}
/**
* Get the quality for an image based on the extension.
*/
private function get_quality_for_image( $image_url ) {
// Define an associative array to map extensions to image types
$extension_to_quality = array(
'jpg' => $this->get_quality_for_type( 'jpg' ),
'jpeg' => $this->get_quality_for_type( 'jpg' ),
'webp' => $this->get_quality_for_type( 'webp' ),
'png' => $this->get_quality_for_type( 'png' ),
);
// Extract the file extension from the URL
$file_extension = pathinfo( $image_url, PATHINFO_EXTENSION );
// Convert the extension to lowercase for case-insensitive comparison
$file_extension = strtolower( $file_extension );
// Determine the image type based on the extension
if ( isset( $extension_to_quality[ $file_extension ] ) ) {
return $extension_to_quality[ $file_extension ];
}
return null;
}
private function get_quality_for_type( $image_type ) {
$quality_settings = jetpack_boost_ds_get( 'image_cdn_quality' );
if ( ! isset( $quality_settings[ $image_type ] ) ) {
return null;
}
// Passing 100 to photon will result in a lossless image
return $quality_settings[ $image_type ]['lossless'] ? 100 : $quality_settings[ $image_type ]['quality'];
}
public static function get_parent_features(): array {
return array(
Image_CDN::class,
);
}
}