<?php
/**
* Blocks API: WP_Block_Pattern_Categories_Registry class
*
* @package WordPress
* @subpackage Blocks
* @since 5.5.0
*/

/**
* Class used for interacting with block pattern categories.
*/
#[AllowDynamicProperties]
final class WP_Block_Pattern_Categories_Registry {
/**
* Registered block pattern categories array.
*
* @since 5.5.0
* @var array[]
*/
private $registered_categories = array();

/**
* Pattern categories registered outside the `init` action.
*
* @since 6.0.0
* @var array[]
*/
private $registered_categories_outside_init = array();

/**
* Container for the main instance of the class.
*
* @since 5.5.0
* @var WP_Block_Pattern_Categories_Registry|null
*/
private static $instance = null;

/**
* Registers a pattern category.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @param array $category_properties {
* List of properties for the block pattern category.
*
* @type string $label Required. A human-readable label for the pattern category.
* }
* @return bool True if the pattern was registered with success and false otherwise.
*/
public function register( $category_name, $category_properties ) {
if ( ! isset( $category_name ) || ! is_string( $category_name ) ) {
_doing_it_wrong(
__METHOD__,
__( 'Block pattern category name must be a string.' ),
'5.5.0'
);
return false;
}

$category = array_merge(
array( 'name' => $category_name ),
$category_properties
);

$this->registered_categories[ $category_name ] = $category;

// If the category is registered inside an action other than `init`, store it
// also to a dedicated array. Used to detect deprecated registrations inside
// `admin_init` or `current_screen`.
if ( current_action() && 'init' !== current_action() ) {
$this->registered_categories_outside_init[ $category_name ] = $category;
}

return true;
}

/**
* Unregisters a pattern category.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @return bool True if the pattern was unregistered with success and false otherwise.
*/
public function unregister( $category_name ) {
if ( ! $this->is_registered( $category_name ) ) {
_doing_it_wrong(
__METHOD__,
/* translators: %s: Block pattern name. */
sprintf( __( 'Block pattern category "%s" not found.' ), $category_name ),
'5.5.0'
);
return false;
}

unset( $this->registered_categories[ $category_name ] );
unset( $this->registered_categories_outside_init[ $category_name ] );

return true;
}

/**
* Retrieves an array containing the properties of a registered pattern category.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @return array Registered pattern properties.
*/
public function get_registered( $category_name ) {
if ( ! $this->is_registered( $category_name ) ) {
return null;
}

return $this->registered_categories[ $category_name ];
}

/**
* Retrieves all registered pattern categories.
*
* @since 5.5.0
*
* @param bool $outside_init_only Return only categories registered outside the `init` action.
* @return array[] Array of arrays containing the registered pattern categories properties.
*/
public function get_all_registered( $outside_init_only = false ) {
return array_values(
$outside_init_only
? $this->registered_categories_outside_init
: $this->registered_categories
);
}

/**
* Checks if a pattern category is registered.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @return bool True if the pattern category is registered, false otherwise.
*/
public function is_registered( $category_name ) {
return isset( $this->registered_categories[ $category_name ] );
}

/**
* Utility method to retrieve the main instance of the class.
*
* The instance will be created if it does not exist yet.
*
* @since 5.5.0
*
* @return WP_Block_Pattern_Categories_Registry The main instance.
*/
public static function get_instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}

return self::$instance;
}
}

/**
* Registers a new pattern category.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @param array $category_properties List of properties for the block pattern.
* See WP_Block_Pattern_Categories_Registry::register() for
* accepted arguments.
* @return bool True if the pattern category was registered with success and false otherwise.
*/
function register_block_pattern_category( $category_name, $category_properties ) {
return WP_Block_Pattern_Categories_Registry::get_instance()->register( $category_name, $category_properties );
}

/**
* Unregisters a pattern category.
*
* @since 5.5.0
*
* @param string $category_name Pattern category name including namespace.
* @return bool True if the pattern category was unregistered with success and false otherwise.
*/
function unregister_block_pattern_category( $category_name ) {
return WP_Block_Pattern_Categories_Registry::get_instance()->unregister( $category_name );
}