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* @implements IteratorAggregate * * @phpstan-import-type Schema from Abstract_Option as OptionSchema * @phpstan-type Schema array{ * '$schema': non-falsy-string, * title: non-falsy-string, * description: string, * type: 'object', * properties: array, * additionalProperties: false * } */ class Options implements ArrayAccess, IteratorAggregate { public const OPTION_NAME = 'polylang'; /** * Polylang's options, by blog ID. * Raw value if option is not registered yet, `Abstract_Option` instance otherwise. * * @var Abstract_Option[][]|mixed[][] * @phpstan-var array> */ private $options = array(); /** * Tells if the options have been modified, by blog ID. * * @var bool[] * @phpstan-var array */ private $modified = array(); /** * The original blog ID. * * @var int */ private $blog_id; /** * The current blog ID. * * @var int */ private $current_blog_id; /** * Map of memoized values of blog IDs to tell if Polylang is active. * * @var bool[] * @phpstan-var array */ private $is_plugin_active = array(); /** * Cached options JSON schema by blog ID. * * @var array[]|null * @phpstan-var array|null */ private $schema; /** * Constructor. * * @since 3.7 */ public function __construct() { // Keep track of the blog ID. $this->blog_id = (int) get_current_blog_id(); $this->current_blog_id = $this->blog_id; $this->is_plugin_active = array( $this->blog_id => true ); // Handle options. $this->init_options_for_current_blog(); add_filter( 'pre_update_option_polylang', array( $this, 'protect_wp_option_storage' ), 1 ); add_action( 'switch_blog', array( $this, 'on_blog_switch' ), -1000 ); // Options must be ready early. add_action( 'shutdown', array( $this, 'save_all' ), 1000 ); // Make sure to save options after everything. } /** * Registers an option. * Options must be registered in the right order: some options depend on other options' value. * * @since 3.7 * * @param string $class_name Option class to register. * @return self * * @phpstan-param class-string $class_name */ public function register( string $class_name ): self { $key = $class_name::key(); if ( ! array_key_exists( $key, $this->options[ $this->current_blog_id ] ) ) { // Option raw value doesn't exist in database, use default instead. $this->options[ $this->current_blog_id ][ $key ] = $this->maybe_make_option_inactive( new $class_name() ); return $this; } // If option exists in database, use this value. if ( $this->options[ $this->current_blog_id ][ $key ] instanceof Abstract_Option ) { // Already registered, do nothing. $this->options[ $this->current_blog_id ][ $key ] = $this->maybe_make_option_inactive( $this->options[ $this->current_blog_id ][ $key ] ); return $this; } // Option raw value exists in database, use it. $this->options[ $this->current_blog_id ][ $key ] = $this->maybe_make_option_inactive( new $class_name( $this->options[ $this->current_blog_id ][ $key ] ) ); return $this; } /** * Prevents storing an instance of `Options` into the database. * * @since 3.7 * * @param array|Options $value The options to store. * @return array */ public function protect_wp_option_storage( $value ) { if ( $value instanceof self ) { return $value->get_all(); } return $value; } /** * Initializes options for the newly switched blog if applicable. * * @since 3.7 * * @param int $blog_id The blog ID. * @return void */ public function on_blog_switch( $blog_id ): void { $this->current_blog_id = (int) $blog_id; if ( isset( $this->options[ $blog_id ] ) ) { return; } $this->init_options_for_current_blog(); } /** * Stores the options into the database for all blogs. * Hooked to `shutdown`. * * @since 3.7 * * @return void */ public function save_all(): void { // Find blog with modified options. $modified = $this->get_modified(); if ( empty( $modified ) ) { // Not modified. return; } remove_action( 'switch_blog', array( $this, 'on_blog_switch' ), -1000 ); // Handle the original blog first, maybe this will prevent the use of `switch_to_blog()`. if ( isset( $modified[ $this->blog_id ] ) && $this->current_blog_id === $this->blog_id ) { $this->save(); unset( $modified[ $this->blog_id ] ); if ( empty( $modified ) ) { // All done, no need of `switch_to_blog()`. return; } } foreach ( $modified as $blog_id => $_yup ) { switch_to_blog( $blog_id ); $this->save(); restore_current_blog(); } } /** * Stores the options into the database. * * @since 3.7 * * @return bool True if the options were updated, false otherwise. */ public function save(): bool { if ( empty( $this->modified[ $this->current_blog_id ] ) ) { return false; } unset( $this->modified[ $this->current_blog_id ] ); if ( is_multisite() && ! get_site( $this->current_blog_id ) ) { // Cached by `$this->get_modified()` if called from `$this->save_all()`. // Deleted. Should not happen if called from `$this->save_all()`. return false; } $options = get_option( self::OPTION_NAME, array() ); if ( is_array( $options ) ) { // Preserve options that are not from Polylang. $options = array_merge( $options, $this->get_all() ); } else { $options = $this->get_all(); } return update_option( self::OPTION_NAME, $options ); } /** * Returns all options. * * @since 3.7 * * @return mixed[] All options values. */ public function get_all(): array { if ( empty( $this->options[ $this->current_blog_id ] ) ) { // No options. return array(); } return array_map( function ( $value ) { return $value->get(); }, array_filter( $this->options[ $this->current_blog_id ], function ( $value ) { return $value instanceof Abstract_Option; } ) ); } /** * Merges a subset of options into the current blog ones. * * @since 3.7 * * @param array $values Array of raw options. * @return WP_Error */ public function merge( array $values ): WP_Error { $errors = new WP_Error(); foreach ( $this->options[ $this->current_blog_id ] as $key => $option ) { if ( ! isset( $values[ $key ] ) || ! $this->has( $key ) ) { continue; } $option_errors = $this->set( $key, $values[ $key ] ); if ( $option_errors->has_errors() ) { // Blocking and non-blocking errors. $errors->merge_from( $option_errors ); } unset( $values[ $key ] ); } if ( empty( $values ) ) { return $errors; } // Merge all "unknown option" errors into a single error message. if ( 1 === count( $values ) ) { /* translators: %s is the name of an option. */ $message = __( 'Unknown option key %s.', 'polylang' ); } else { /* translators: %s is a list of option names. */ $message = __( 'Unknown option keys %s.', 'polylang' ); } $errors->add( 'pll_unknown_option_keys', sprintf( $message, wp_sprintf_l( '%l', array_map( function ( $value ) { return "'$value'"; }, array_keys( $values ) ) ) ) ); return $errors; } /** * Returns JSON schema for all options of the current blog. * * @since 3.7 * * @return array The schema. * * @phpstan-return Schema */ public function get_schema(): array { if ( isset( $this->schema[ $this->current_blog_id ] ) ) { return $this->schema[ $this->current_blog_id ]; } $properties = array(); if ( $this->is_plugin_active() ) { foreach ( $this->options[ $this->current_blog_id ] as $option ) { if ( ! $option instanceof Abstract_Option || empty( $option->get_schema() ) ) { continue; } $properties[ $option->key() ] = $option->get_schema(); } } $this->schema[ $this->current_blog_id ] = array( '$schema' => 'http://json-schema.org/draft-04/schema#', 'title' => static::OPTION_NAME, 'description' => __( 'Polylang options', 'polylang' ), 'type' => 'object', 'properties' => $properties, 'additionalProperties' => false, ); return $this->schema[ $this->current_blog_id ]; } /** * Tells if an option exists. * * @since 3.7 * * @param string $key The name of the option to check for. * @return bool */ public function has( string $key ): bool { return isset( $this->options[ $this->current_blog_id ][ $key ] ) && $this->options[ $this->current_blog_id ][ $key ] instanceof Abstract_Option; } /** * Returns the value of the specified option. * * @since 3.7 * * @param string $key The name of the option to retrieve. * @return mixed */ public function get( string $key ) { if ( ! $this->has( $key ) ) { $v = null; return $v; } /** @var Abstract_Option */ $option = $this->options[ $this->current_blog_id ][ $key ]; return $option->get(); } /** * Assigns a value to the specified option. * * This doesn't allow to set an unknown option. * When doing multiple `set()`, options must be set in the right order: some options depend on other options' value. * * @since 3.7 * * @param string $key The name of the option to assign the value to. * @param mixed $value The value to set. * @return WP_Error */ public function set( string $key, $value ): WP_Error { if ( ! $this->has( $key ) ) { /* translators: %s is the name of an option. */ return new WP_Error( 'pll_unknown_option_key', sprintf( __( 'Unknown option key %s.', 'polylang' ), "'$key'" ) ); } /** @var Abstract_Option */ $option = $this->options[ $this->current_blog_id ][ $key ]; $old_value = $option->get(); if ( $option->set( $value, $this ) && $option->get() !== $old_value ) { // No blocking errors: the value can be stored. $this->modified[ $this->current_blog_id ] = true; } // Return errors. return $option->get_errors(); } /** * Resets an option to its default value. * * @since 3.7 * * @param string $key The name of the option to reset. * @return mixed The new value. */ public function reset( string $key ) { if ( ! $this->has( $key ) ) { return null; } /** @var Abstract_Option */ $option = $this->options[ $this->current_blog_id ][ $key ]; if ( $option->get() !== $option->reset() ) { $this->modified[ $this->current_blog_id ] = true; } return $option->get(); } /** * Removes an option sub value from its array. * * @since 3.8 * * @param string $key The name of the option to splice. * @param mixed $value The value to remove. * @return WP_Error An error object, empty if the value was removed successfully. */ public function remove( string $key, $value ): WP_Error { if ( ! $this->has( $key ) ) { return new WP_Error( 'pll_unknown_option_key', /* translators: %s is the name of an option. */ sprintf( __( 'Unknown option key %s.', 'polylang' ), "'$key'" ) ); } $option = $this->options[ $this->current_blog_id ][ $key ]; if ( ! $option instanceof Abstract_List && ! $option instanceof Abstract_Map ) { return new WP_Error( 'pll_invalid_option_type', /* translators: %s is the name of an option. */ sprintf( __( 'Option %s is not a list or map.', 'polylang' ), "'$key'" ) ); } if ( $option->remove( $value ) ) { $this->modified[ $this->current_blog_id ] = true; return new WP_Error(); } return new WP_Error( 'pll_remove_failed', /* translators: %1$s is the value to remove. %2$s is the name of an option. */ sprintf( __( 'Failed to remove %1$s from %2$s.', 'polylang' ), print_r( $value, true ), "'$key'" ) // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r ); } /** * Adds a value to an option. * * @since 3.8 * * @param string $key The name of the option to add the value to. * @param mixed $value The value to add. * @return WP_Error An error object, empty if the value was added successfully. */ public function add( string $key, $value ): WP_Error { if ( ! $this->has( $key ) ) { return new WP_Error( 'pll_unknown_option_key', /* translators: %s is the name of an option. */ sprintf( __( 'Unknown option key %s.', 'polylang' ), "'$key'" ) ); } $option = $this->options[ $this->current_blog_id ][ $key ]; if ( ! $option instanceof Abstract_List && ! $option instanceof Abstract_Map ) { return new WP_Error( 'pll_invalid_option_type', /* translators: %s is the name of an option. */ sprintf( __( 'Option %s is not a list or map.', 'polylang' ), "'$key'" ) ); } if ( $option->add( $value, $this ) ) { $this->modified[ $this->current_blog_id ] = true; return new WP_Error(); } return new WP_Error( 'pll_add_failed', /* translators: %1$s is the value to add. %2$s is the name of an option. */ sprintf( __( 'Failed to add %1$s to %2$s.', 'polylang' ), print_r( $value, true ), "'$key'" ) // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r ); } /** * Tells if an option exists. * Required by interface `ArrayAccess`. * * @since 3.7 * * @param string $offset The name of the option to check for. * @return bool */ public function offsetExists( $offset ): bool { return $this->has( (string) $offset ); } /** * Returns the value of the specified option. * Required by interface `ArrayAccess`. * * @since 3.7 * * @param string $offset The name of the option to retrieve. * @return mixed */ #[\ReturnTypeWillChange] public function offsetGet( $offset ) { return $this->get( (string) $offset ); } /** * Assigns a value to the specified option. * This doesn't allow to set an unknown option. * Required by interface `ArrayAccess`. * * @since 3.7 * * @param string $offset The name of the option to assign the value to. * @param mixed $value The value to set. * @return void */ public function offsetSet( $offset, $value ): void { $this->set( (string) $offset, $value ); } /** * Resets an option. * This doesn't allow to unset an option, this resets it to its default value instead. * Required by interface `ArrayAccess`. * * @since 3.7 * * @param string $offset The name of the option to unset. * @return void */ public function offsetUnset( $offset ): void { $this->reset( (string) $offset ); } /** * Returns all current site's option values. * Required by interface `IteratorAggregate`. * * @since 3.7 * * @return ArrayIterator * * @phpstan-return ArrayIterator */ public function getIterator(): ArrayIterator { return new ArrayIterator( $this->get_all() ); } /** * Retrieves site health information based on the current blog's options. * * @since 3.8 * * @return array The site health information array. */ public function get_site_health_info(): array { $infos = array(); foreach ( $this->options[ $this->current_blog_id ] as $option ) { if ( ! $option instanceof Abstract_Option ) { continue; } $info = $option->get_site_health_info( $this ); if ( ! empty( $info ) ) { $infos[ $option::key() ] = $info; } } return $infos; } /** * Returns the list of modified sites. * On multisite, sites are cached. * /!\ At this point, some sites may have been deleted. They are removed from `$this->modified` here. * * @since 3.7 * * @return bool[] * @phpstan-return array */ private function get_modified(): array { if ( empty( $this->modified ) ) { // Not modified. return $this->modified; } // Cleanup deleted sites and cache existing ones. if ( ! is_multisite() ) { // Not multisite: no need to cache or verify existence. return $this->modified; } // Fetch all the data instead of only the IDs, so it is cached. $sites = get_sites( array( 'site__in' => array_keys( $this->modified ), 'number' => count( $this->modified ), ) ); // Keep only existing blogs. $this->modified = array(); foreach ( $sites as $site ) { $this->modified[ $site->id ] = true; } return $this->modified; } /** * Initializes options for the current blog. * * @since 3.7 * * @return void */ private function init_options_for_current_blog(): void { if ( ! $this->is_plugin_active() ) { // Don't try to get the options from the DB. $this->options[ $this->current_blog_id ] = array(); } else { $options = get_option( self::OPTION_NAME ); if ( empty( $options ) || ! is_array( $options ) ) { $this->options[ $this->current_blog_id ] = array(); $this->modified[ $this->current_blog_id ] = true; } else { $this->options[ $this->current_blog_id ] = $options; } } /** * Fires after the options have been init for the current blog. * This is the best place to register options. * * @since 3.7 * @since 3.8 New parameter `$is_plugin_active`. * * @param Options $options Instance of the options. * @param int $current_blog_id Current blog ID. * @param bool $is_plugin_active True if Polylang is active on the current site, false otherwise. * This can be false after calling `switch_to_blog()`. */ do_action( 'pll_init_options_for_blog', $this, $this->current_blog_id, $this->is_plugin_active() ); } /** * Tells if Polylang is active on the current blog. * * @since 3.8 * * @return bool */ private function is_plugin_active(): bool { if ( isset( $this->is_plugin_active[ $this->current_blog_id ] ) ) { return $this->is_plugin_active[ $this->current_blog_id ]; } $this->is_plugin_active[ $this->current_blog_id ] = pll_is_plugin_active( POLYLANG_BASENAME ) || doing_action( 'activate_' . POLYLANG_BASENAME ); return $this->is_plugin_active[ $this->current_blog_id ]; } /** * Decorates options if we are on a site where Polylang is not active. * * @since 3.8 * * @param Abstract_Option $option The option to decorate. * @return Abstract_Option */ private function maybe_make_option_inactive( Abstract_Option $option ): Abstract_Option { if ( $this->is_plugin_active() || $option instanceof Inactive_Option ) { return $option; } return new Inactive_Option( $option ); } }