Api.php
<?php
namespace Automattic\WooCommerce\Blocks\Assets;
use Automattic\WooCommerce\Blocks\Domain\Package;
use Exception;
use Automattic\Jetpack\Constants;
/**
* The Api class provides an interface to various asset registration helpers.
*
* Contains asset api methods
*
* @since 2.5.0
*/
class Api {
/**
* Stores the prefixed WC version. Used because the WC Blocks version has not been updated since the monorepo merge.
*
* @var string
*/
public $wc_version;
/**
* Stores inline scripts already enqueued.
*
* @var array
*/
private $inline_scripts = [];
/**
* Determines if caching is enabled for script data.
*
* @var boolean
*/
private $disable_cache = false;
/**
* Stores loaded script data for the current request
*
* @var array|null
*/
private $script_data = null;
/**
* Stores the hash for the script data, made up of the site url, plugin version and package path.
*
* @var string
*/
private $script_data_hash;
/**
* Stores the transient key used to cache the script data. This will change if the site is accessed via HTTPS or HTTP.
*
* @var string
*/
private $script_data_transient_key = 'woocommerce_blocks_asset_api_script_data';
/**
* Reference to the Package instance
*
* @var Package
*/
private $package;
/**
* Constructor for class
*
* @param Package $package An instance of Package.
*/
public function __construct( Package $package ) {
// Use wc- prefix here to prevent collisions when WC Core version catches up to a version previously used by the WC Blocks feature plugin.
$this->wc_version = 'wc-' . Constants::get_constant( 'WC_VERSION' );
$this->package = $package;
$this->disable_cache = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) || ! $this->package->feature()->is_production_environment();
// If the site is accessed via HTTPS, change the transient key. This is to prevent the script URLs being cached
// with the first scheme they are accessed on after cache expiry.
if ( is_ssl() ) {
$this->script_data_transient_key .= '_ssl';
}
if ( ! $this->disable_cache ) {
$this->script_data_hash = $this->get_script_data_hash();
}
add_action( 'shutdown', array( $this, 'update_script_data_cache' ), 20 );
}
/**
* Get the file modified time as a cache buster if we're in dev mode.
*
* @param string $file Local path to the file (relative to the plugin
* directory).
* @return string The cache buster value to use for the given file.
*/
protected function get_file_version( $file ) {
if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG && file_exists( $this->package->get_path() . $file ) ) {
return filemtime( $this->package->get_path( trim( $file, '/' ) ) );
}
return $this->wc_version;
}
/**
* Retrieve the url to an asset for this plugin.
*
* @param string $relative_path An optional relative path appended to the
* returned url.
*
* @return string
*/
protected function get_asset_url( $relative_path = '' ) {
return $this->package->get_url( $relative_path );
}
/**
* Get the path to a block's metadata
*
* @param string $block_name The block to get metadata for.
* @param string $path Optional. The path to the metadata file inside the 'assets/client/blocks' folder.
*
* @return string|boolean False if metadata file is not found for the block.
*/
public function get_block_metadata_path( $block_name, $path = '' ) {
$path_to_metadata_from_plugin_root = $this->package->get_path( 'assets/client/blocks/' . $path . $block_name . '/block.json' );
if ( ! file_exists( $path_to_metadata_from_plugin_root ) ) {
return false;
}
return $path_to_metadata_from_plugin_root;
}
/**
* Generates a hash containing the site url, plugin version and package path.
*
* Moving the plugin, changing the version, or changing the site url will result in a new hash and the cache will be invalidated.
*
* @return string The generated hash.
*/
private function get_script_data_hash() {
return md5( get_option( 'siteurl', '' ) . $this->wc_version . $this->package->get_path() );
}
/**
* Initialize and load cached script data from the transient cache.
*
* @return array
*/
private function get_cached_script_data() {
if ( $this->disable_cache ) {
return [];
}
$transient_value = json_decode( (string) get_transient( $this->script_data_transient_key ), true );
if (
json_last_error() !== JSON_ERROR_NONE ||
empty( $transient_value ) ||
empty( $transient_value['script_data'] ) ||
empty( $transient_value['version'] ) ||
$transient_value['version'] !== $this->wc_version ||
empty( $transient_value['hash'] ) ||
$transient_value['hash'] !== $this->script_data_hash
) {
return [];
}
return (array) ( $transient_value['script_data'] ?? [] );
}
/**
* Store all cached script data in the transient cache.
*/
public function update_script_data_cache() {
if ( is_null( $this->script_data ) || $this->disable_cache ) {
return;
}
set_transient(
$this->script_data_transient_key,
wp_json_encode(
array(
'script_data' => $this->script_data,
'version' => $this->wc_version,
'hash' => $this->script_data_hash,
)
),
DAY_IN_SECONDS * 30
);
}
/**
* Get src, version and dependencies given a script relative src.
*
* @param string $relative_src Relative src to the script.
* @param array $dependencies Optional. An array of registered script handles this script depends on. Default empty array.
*
* @return array src, version and dependencies of the script.
*/
public function get_script_data( $relative_src, $dependencies = [] ) {
if ( ! $relative_src ) {
return array(
'src' => '',
'version' => '1',
'dependencies' => $dependencies,
);
}
if ( is_null( $this->script_data ) ) {
$this->script_data = $this->get_cached_script_data();
}
if ( empty( $this->script_data[ $relative_src ] ) ) {
$asset_path = $this->package->get_path( str_replace( '.js', '.asset.php', $relative_src ) );
// The following require is safe because we are checking if the file exists and it is not a user input.
// nosemgrep audit.php.lang.security.file.inclusion-arg.
$asset = file_exists( $asset_path ) ? require $asset_path : [];
$this->script_data[ $relative_src ] = array(
'src' => $this->get_asset_url( $relative_src ),
'version' => ! empty( $asset['version'] ) ? $asset['version'] : $this->get_file_version( $relative_src ),
'dependencies' => ! empty( $asset['dependencies'] ) ? $asset['dependencies'] : [],
);
}
// Return asset details as well as the requested dependencies array.
return [
'src' => $this->script_data[ $relative_src ]['src'],
'version' => $this->script_data[ $relative_src ]['version'],
'dependencies' => array_merge( $this->script_data[ $relative_src ]['dependencies'], $dependencies ),
];
}
/**
* Registers a script according to `wp_register_script`, adding the correct prefix, and additionally loading translations.
*
* When creating script assets, the following rules should be followed:
* 1. All asset handles should have a `wc-` prefix.
* 2. If the asset handle is for a Block (in editor context) use the `-block` suffix.
* 3. If the asset handle is for a Block (in frontend context) use the `-block-frontend` suffix.
* 4. If the asset is for any other script being consumed or enqueued by the blocks plugin, use the `wc-blocks-` prefix.
*
* @since 2.5.0
* @throws Exception If the registered script has a dependency on itself.
*
* @param string $handle Unique name of the script.
* @param string $relative_src Relative url for the script to the path from plugin root.
* @param array $dependencies Optional. An array of registered script handles this script depends on. Default empty array.
* @param bool $has_i18n Optional. Whether to add a script translation call to this file. Default: true.
*/
public function register_script( $handle, $relative_src, $dependencies = [], $has_i18n = true ) {
$script_data = $this->get_script_data( $relative_src, $dependencies );
if ( in_array( $handle, $script_data['dependencies'], true ) ) {
if ( $this->package->feature()->is_development_environment() ) {
$dependencies = array_diff( $script_data['dependencies'], [ $handle ] );
add_action(
'admin_notices',
function() use ( $handle ) {
echo '<div class="error"><p>';
/* translators: %s file handle name. */
printf( esc_html__( 'Script with handle %s had a dependency on itself which has been removed. This is an indicator that your JS code has a circular dependency that can cause bugs.', 'woocommerce' ), esc_html( $handle ) );
echo '</p></div>';
}
);
} else {
throw new Exception( sprintf( 'Script with handle %s had a dependency on itself. This is an indicator that your JS code has a circular dependency that can cause bugs.', $handle ) );
}
}
/**
* Filters the list of script dependencies.
*
* @since 3.0.0
*
* @param array $dependencies The list of script dependencies.
* @param string $handle The script's handle.
* @return array
*/
$script_dependencies = apply_filters( 'woocommerce_blocks_register_script_dependencies', $script_data['dependencies'], $handle );
wp_register_script( $handle, $script_data['src'], $script_dependencies, $script_data['version'], true );
if ( $has_i18n && function_exists( 'wp_set_script_translations' ) ) {
wp_set_script_translations( $handle, 'woocommerce', $this->package->get_path( 'languages' ) );
}
}
/**
* Registers a style according to `wp_register_style`.
*
* @since 2.5.0
* @since 2.6.0 Change src to be relative source.
*
* @param string $handle Name of the stylesheet. Should be unique.
* @param string $relative_src Relative source of the stylesheet to the plugin path.
* @param array $deps Optional. An array of registered stylesheet handles this stylesheet depends on. Default empty array.
* @param string $media Optional. The media for which this stylesheet has been defined. Default 'all'. Accepts media types like
* 'all', 'print' and 'screen', or media queries like '(orientation: portrait)' and '(max-width: 640px)'.
* @param boolean $rtl Optional. Whether or not to register RTL styles.
*/
public function register_style( $handle, $relative_src, $deps = [], $media = 'all', $rtl = false ) {
$filename = str_replace( plugins_url( '/', dirname( __DIR__ ) ), '', $relative_src );
$src = $this->get_asset_url( $relative_src );
$ver = $this->get_file_version( $filename );
wp_register_style( $handle, $src, $deps, $ver, $media );
if ( $rtl ) {
wp_style_add_data( $handle, 'rtl', 'replace' );
}
}
/**
* Returns the appropriate asset path for current builds.
*
* @param string $filename Filename for asset path (without extension).
* @param string $type File type (.css or .js).
* @return string The generated path.
*/
public function get_block_asset_build_path( $filename, $type = 'js' ) {
return "assets/client/blocks/$filename.$type";
}
/**
* Adds an inline script, once.
*
* @param string $handle Script handle.
* @param string $script Script contents.
*/
public function add_inline_script( $handle, $script ) {
if ( ! empty( $this->inline_scripts[ $handle ] ) && in_array( $script, $this->inline_scripts[ $handle ], true ) ) {
return;
}
wp_add_inline_script( $handle, $script );
if ( isset( $this->inline_scripts[ $handle ] ) ) {
$this->inline_scripts[ $handle ][] = $script;
} else {
$this->inline_scripts[ $handle ] = array( $script );
}
}
}
