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<?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; /** * Tracks whether script_data was modified during the current request. * * @var boolean */ private $script_data_modified = false; /** * 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 ) || wp_get_environment_type() !== 'production'; // 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; } if ( ! $this->script_data_modified ) { 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 ); } /** * Use package path to find an asset data file and return the data. * * @param string $filename The filename of the asset. * @return array The asset data. */ public function get_asset_data( $filename ) { $asset_path = $this->package->get_path( $filename ); $asset = file_exists( $asset_path ) ? require $asset_path : []; return $asset; } /** * 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'] : [], ); $this->script_data_modified = true; } // 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 ( wp_get_environment_type() === 'development' ) { $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' ) ); wp_set_script_translations( $handle, 'woocommerce', $this->package->get_path( 'i18n/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 ); } } }