<?php

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namespace Yoast\WP\SEO\Helpers;

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/**

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* A helper object for author archives.

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*/

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class Asset_Helper {

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/**

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* Recursively retrieves all dependency urls of a given handle.

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*

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* @param string $handle The handle.

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*

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* @return string[] All dependency urls of the given handle.

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*/

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public function get_dependency_urls_by_handle( $handle ) {

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$urls = [];

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foreach ( $this->get_dependency_handles( $handle ) as $other_handle ) {

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$urls[ $other_handle ] = $this->get_asset_url( $other_handle );

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}

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return $urls;

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}

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/**

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* Recursively retrieves all dependencies of a given handle.

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*

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* @param string $handle The handle.

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*

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* @return string[]|bool All dependencies of the given handle.

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*/

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public function get_dependency_handles( $handle ) {

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$scripts = \wp_scripts();

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if ( ! isset( $scripts->registered[ $handle ] ) ) {

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return false;

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}

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$obj = $scripts->registered[ $handle ];

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$deps = $obj->deps;

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foreach ( $obj->deps as $other_handle ) {

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$nested_deps = $this->get_dependency_handles( $other_handle );

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if ( ! $nested_deps ) {

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continue;

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}

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// Place nested dependencies before primary dependencies, they need to be loaded first.

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$deps = \array_merge( $nested_deps, $deps );

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}

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// Array unique keeps the first of each element so dependencies will be as early as they're required.

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return \array_values( \array_unique( $deps ) );

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}

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/**

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* Gets the URL of a given asset.

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*

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* This logic is copied from WP_Scripts::do_item as unfortunately that logic is not properly isolated.

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*

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* @param string $handle The handle of the asset.

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*

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* @return string|false The URL of the asset or false if the asset does not exist.

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*/

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public function get_asset_url( $handle ) {

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$scripts = \wp_scripts();

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if ( ! isset( $scripts->registered[ $handle ] ) ) {

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return false;

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}

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$obj = $scripts->registered[ $handle ];

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if ( $obj->ver === null ) {

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$ver = '';

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}

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else {

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$ver = ( $obj->ver ) ? $obj->ver : $scripts->default_version;

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}

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if ( isset( $scripts->args[ $handle ] ) ) {

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$ver = ( $ver ) ? $ver . '&amp;' . $scripts->args[ $handle ] : $scripts->args[ $handle ];

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}

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$src = $obj->src;

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if ( ! \preg_match( '|^(https?:)?//|', $src ) && ! ( $scripts->content_url && \strpos( $src, $scripts->content_url ) === 0 ) ) {

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$src = $scripts->base_url . $src;

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}

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if ( ! empty( $ver ) ) {

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$src = \add_query_arg( 'ver', $ver, $src );

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}

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/** This filter is documented in wp-includes/class.wp-scripts.php */

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return \esc_url( \apply_filters( 'script_loader_src', $src, $handle ) );

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}

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}

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