<?php

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declare(strict_types=1);

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namespace Automattic\WooCommerce\Blocks\Templates;

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use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;

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/**

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* SingleProductTemplateCompatibility class.

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*

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* To bridge the gap on compatibility with PHP hooks and Single Product templates.

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*

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* @internal

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*/

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class SingleProductTemplateCompatibility extends AbstractTemplateCompatibility {

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const IS_FIRST_BLOCK = '__wooCommerceIsFirstBlock';

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const IS_LAST_BLOCK = '__wooCommerceIsLastBlock';

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/**

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* Inject hooks to rendered content of corresponding blocks.

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*

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* @param mixed $block_content The rendered block content.

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* @param mixed $block The parsed block data.

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*

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* @return string

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*/

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public function inject_hooks( $block_content, $block ) {

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if ( ! is_product() ) {

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return $block_content;

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}

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$this->remove_default_hooks();

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$block_name = $block['blockName'];

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$block_hooks = array_filter(

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$this->hook_data,

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function ( $hook ) use ( $block_name ) {

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return in_array( $block_name, $hook['block_names'], true );

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}

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);

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$first_or_last_block_content = $this->inject_hook_to_first_and_last_blocks( $block_content, $block, $block_hooks );

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if ( isset( $first_or_last_block_content ) ) {

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return $first_or_last_block_content;

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}

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return sprintf(

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'%1$s%2$s%3$s',

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$this->get_hooks_buffer( $block_hooks, 'before' ),

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$block_content,

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$this->get_hooks_buffer( $block_hooks, 'after' )

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);

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}

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/**

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* Inject custom hooks to the first and last blocks.

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* Since that there is a custom logic for the first and last block, we have to inject the hooks manually.

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* The first block supports the following hooks:

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* woocommerce_before_single_product

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* woocommerce_before_single_product_summary

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*

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* The last block supports the following hooks:

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* woocommerce_after_single_product

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*

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* @param mixed $block_content The rendered block content.

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* @param mixed $block The parsed block data.

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* @param array $block_hooks The hooks that should be injected to the block.

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*

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* @return string

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*/

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private function inject_hook_to_first_and_last_blocks( $block_content, $block, $block_hooks ) {

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$first_block_hook = array(

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'before' => array(

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'woocommerce_before_main_content' => $this->hook_data['woocommerce_before_main_content'],

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'woocommerce_before_single_product' => $this->hook_data['woocommerce_before_single_product'],

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'woocommerce_before_single_product_summary' => $this->hook_data['woocommerce_before_single_product_summary'],

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),

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'after' => array(),

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);

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$last_block_hook = array(

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'before' => array(),

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'after' => array(

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'woocommerce_after_single_product' => $this->hook_data['woocommerce_after_single_product'],

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'woocommerce_after_main_content' => $this->hook_data['woocommerce_after_main_content'],

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'woocommerce_sidebar' => $this->hook_data['woocommerce_sidebar'],

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),

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);

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if ( isset( $block['attrs'][ self::IS_FIRST_BLOCK ] ) && isset( $block['attrs'][ self::IS_LAST_BLOCK ] ) ) {

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return sprintf(

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'%1$s%2$s',

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$this->inject_hooks_after_the_wrapper(

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$block_content,

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array_merge(

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$first_block_hook['before'],

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$block_hooks,

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$last_block_hook['before']

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)

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),

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$this->get_hooks_buffer(

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array_merge(

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$first_block_hook['after'],

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$block_hooks,

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$last_block_hook['after']

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),

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'after'

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)

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);

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}

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if ( isset( $block['attrs'][ self::IS_FIRST_BLOCK ] ) ) {

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return sprintf(

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'%1$s%2$s',

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$this->inject_hooks_after_the_wrapper(

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$block_content,

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array_merge(

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$first_block_hook['before'],

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$block_hooks

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)

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),

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$this->get_hooks_buffer(

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array_merge(

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$first_block_hook['after'],

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$block_hooks

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),

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'after'

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)

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);

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}

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if ( isset( $block['attrs'][ self::IS_LAST_BLOCK ] ) ) {

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return sprintf(

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'%1$s%2$s%3$s',

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$this->get_hooks_buffer(

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array_merge(

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$last_block_hook['before'],

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$block_hooks

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),

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'before'

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),

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$block_content,

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$this->get_hooks_buffer(

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array_merge(

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$block_hooks,

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$last_block_hook['after']

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),

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'after'

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)

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);

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}

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}

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/**

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* Update the render block data to inject our custom attribute needed to

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* determine which is the first block of the Single Product Template.

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*

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* @param array $parsed_block The block being rendered.

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* @param array $source_block An un-modified copy of $parsed_block, as it appeared in the source content.

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* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.

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*

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* @return array

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*/

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public function update_render_block_data( $parsed_block, $source_block, $parent_block ) {

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return $parsed_block;

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}

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/**

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* Set supported hooks.

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*/

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protected function set_hook_data() {

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$this->hook_data = array(

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'woocommerce_before_main_content' => array(

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'block_names' => array(),

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'position' => 'before',

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'hooked' => array(

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'woocommerce_output_content_wrapper' => 10,

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'woocommerce_breadcrumb' => 20,

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),

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),

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'woocommerce_after_main_content' => array(

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'block_names' => array(),

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'position' => 'after',

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'hooked' => array(

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'woocommerce_output_content_wrapper_end' => 10,

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),

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),

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'woocommerce_sidebar' => array(

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'block_names' => array(),

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'position' => 'after',

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'hooked' => array(

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'woocommerce_get_sidebar' => 10,

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),

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),

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'woocommerce_before_single_product' => array(

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'block_names' => array(),

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'position' => 'before',

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'hooked' => array(

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'woocommerce_output_all_notices' => 10,

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),

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),

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'woocommerce_before_single_product_summary' => array(

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'block_names' => array(),

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'position' => 'before',

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'hooked' => array(

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'woocommerce_show_product_sale_flash' => 10,

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'woocommerce_show_product_images' => 20,

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),

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),

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'woocommerce_single_product_summary' => array(

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'block_names' => array( 'core/post-excerpt', 'woocommerce/product-summary' ),

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'position' => 'before',

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'hooked' => array(

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'woocommerce_template_single_title' => 5,

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'woocommerce_template_single_rating' => 10,

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'woocommerce_template_single_price' => 10,

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'woocommerce_template_single_excerpt' => 20,

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'woocommerce_template_single_add_to_cart' => 30,

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'woocommerce_template_single_meta' => 40,

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'woocommerce_template_single_sharing' => 50,

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),

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),

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'woocommerce_after_single_product' => array(

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'block_names' => array(),

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'position' => 'after',

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'hooked' => array(),

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),

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'woocommerce_product_meta_start' => array(

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'block_names' => array( 'woocommerce/product-meta' ),

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'position' => 'before',

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'hooked' => array(),

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),

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'woocommerce_product_meta_end' => array(

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'block_names' => array( 'woocommerce/product-meta' ),

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'position' => 'after',

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'hooked' => array(),

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),

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'woocommerce_share' => array(

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'block_names' => array( 'woocommerce/product-details' ),

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'position' => 'before',

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'hooked' => array(),

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),

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'woocommerce_after_single_product_summary' => array(

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'block_names' => array( 'woocommerce/product-details' ),

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'position' => 'after',

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'hooked' => array(

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'woocommerce_output_product_data_tabs' => 10,

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// We want to display the upsell products after the last block that belongs to the Single Product.

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// 'woocommerce_upsell_display' => 15.

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'woocommerce_output_related_products' => 20,

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),

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),

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);

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}

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/**

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* Add compatibility layer to the first and last block of the Single Product Template.

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*

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* @param string $template_content Template.

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* @return string

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*/

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public static function add_compatibility_layer( $template_content ) {

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$blocks = parse_blocks( $template_content );

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if ( self::has_single_product_template_blocks( $blocks ) ) {

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$blocks = self::wrap_single_product_template( $template_content );

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}

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$template = self::inject_custom_attributes_to_first_and_last_block_single_product_template( $blocks );

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return self::serialize_blocks( $template );

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}

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/**

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* For compatibility reason, we need to wrap the Single Product template in a div with specific class.

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* For more details, see https://github.com/woocommerce/woocommerce-blocks/issues/8314.

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*

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* @param string $template_content Template Content.

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* @return array Wrapped template content inside a div.

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*/

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private static function wrap_single_product_template( $template_content ) {

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$parsed_blocks = parse_blocks( $template_content );

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$grouped_blocks = self::group_blocks( $parsed_blocks );

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$wrapped_blocks = array_map(

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function ( $blocks ) {

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if ( 'core/template-part' === $blocks[0]['blockName'] ) {

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return $blocks;

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}

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$has_single_product_template_blocks = self::has_single_product_template_blocks( $blocks );

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if ( $has_single_product_template_blocks ) {

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$wrapped_block = self::create_wrap_block_group( $blocks );

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return array( $wrapped_block[0] );

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}

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return $blocks;

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},

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$grouped_blocks

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);

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return $wrapped_blocks;

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}

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/**

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* Add custom attributes to the first group block and last group block that wrap Single Product Template blocks.

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*

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* @param array $wrapped_blocks Wrapped blocks.

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* @return array

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*/

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private static function inject_custom_attributes_to_first_and_last_block_single_product_template( $wrapped_blocks ) {

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$template_with_custom_attributes = array_reduce(

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$wrapped_blocks,

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function ( $carry, $item ) {

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$index = $carry['index'];

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$carry['index'] = $carry['index'] + 1;

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// If the block is a child of a group block, we need to get the first block of the group.

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$block = isset( $item[0] ) ? $item[0] : $item;

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if ( 'core/template-part' === $block['blockName'] || self::is_custom_html( $block ) ) {

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$carry['template'][] = $block;

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return $carry;

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}

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if ( '' === $carry['first_block']['index'] ) {

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$block['attrs'][ self::IS_FIRST_BLOCK ] = true;

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$carry['first_block']['index'] = $index;

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}

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if ( '' !== $carry['last_block']['index'] ) {

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$index_element = $carry['last_block']['index'];

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$carry['last_block']['index'] = $index;

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$block['attrs'][ self::IS_LAST_BLOCK ] = true;

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unset( $carry['template'][ $index_element ]['attrs'][ self::IS_LAST_BLOCK ] );

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$carry['template'][] = $block;

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return $carry;

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}

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$block['attrs'][ self::IS_LAST_BLOCK ] = true;

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$carry['last_block']['index'] = $index;

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$carry['template'][] = $block;

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[343] Fix | Delete

return $carry;

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},

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array(

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'template' => array(),

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'first_block' => array(

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'index' => '',

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),

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'last_block' => array(

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'index' => '',

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),

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'index' => 0,

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)

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);

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return array( $template_with_custom_attributes['template'] );

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}

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[360] Fix | Delete

/**

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* Wrap all the blocks inside the template in a group block.

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*

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* @param array $blocks Array of parsed block objects.

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* @return array Group block with the blocks inside.

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*/

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private static function create_wrap_block_group( $blocks ) {

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$serialized_blocks = serialize_blocks( $blocks );

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$new_block = parse_blocks(

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sprintf(

[371] Fix | Delete

'<!-- wp:group {"className":"woocommerce product"} -->

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<div class="wp-block-group woocommerce product">

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%1$s

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</div>

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<!-- /wp:group -->',

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$serialized_blocks

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)

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);

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$new_block['innerBlocks'] = $blocks;

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return $new_block;

[383] Fix | Delete

}

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[385] Fix | Delete

/**

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* Check if the Single Product template has a single product template block:

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* woocommerce/product-gallery-image, woocommerce/product-details, woocommerce/add-to-cart-form, etc.

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*

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* @param array $parsed_blocks Array of parsed block objects.

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* @return bool True if the template has a single product template block, false otherwise.

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*/

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private static function has_single_product_template_blocks( $parsed_blocks ) {

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$single_product_template_blocks = array( 'woocommerce/product-image-gallery', 'woocommerce/product-gallery', 'woocommerce/product-details', 'woocommerce/add-to-cart-form', 'woocommerce/add-to-cart-with-options', 'woocommerce/product-meta', 'woocommerce/product-price', 'woocommerce/breadcrumbs' );

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return BlockTemplateUtils::has_block_including_patterns( $single_product_template_blocks, $parsed_blocks );

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}

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/**

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* Group blocks in this way:

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* B1 + TP1 + B2 + B3 + B4 + TP2 + B5

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* (B = Block, TP = Template Part)

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* becomes:

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* [[B1], [TP1], [B2, B3, B4], [TP2], [B5]]

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*

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* @param array $parsed_blocks Array of parsed block objects.

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* @return array Array of blocks grouped by template part.

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*/

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private static function group_blocks( $parsed_blocks ) {

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return array_reduce(

[411] Fix | Delete

$parsed_blocks,

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function ( array $carry, array $block ) {

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if ( 'core/template-part' === $block['blockName'] ) {

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$carry[] = array( $block );

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return $carry;

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}

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$last_element_index = count( $carry ) - 1;

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if ( isset( $carry[ $last_element_index ][0]['blockName'] ) && 'core/template-part' !== $carry[ $last_element_index ][0]['blockName'] ) {

[419] Fix | Delete

$carry[ $last_element_index ][] = $block;

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return $carry;

[421] Fix | Delete

}

[422] Fix | Delete

$carry[] = array( $block );

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return $carry;

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},

[425] Fix | Delete

array()

[426] Fix | Delete

);

[427] Fix | Delete

}

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[429] Fix | Delete

/**

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* Inject the hooks after the div wrapper.

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*

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* @param string $block_content Block Content.

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* @param array $hooks Hooks to inject.

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* @return array

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*/

[436] Fix | Delete

private function inject_hooks_after_the_wrapper( $block_content, $hooks ) {

[437] Fix | Delete

$closing_tag_position = strpos( $block_content, '>' );

[438] Fix | Delete

[439] Fix | Delete

return substr_replace(

[440] Fix | Delete

$block_content,

[441] Fix | Delete

$this->get_hooks_buffer(

[442] Fix | Delete

$hooks,

[443] Fix | Delete

'before'

[444] Fix | Delete

),

[445] Fix | Delete

// Add 1 to the position to inject the content after the closing tag.

[446] Fix | Delete

$closing_tag_position + 1,

[447] Fix | Delete

0

[448] Fix | Delete

);

[449] Fix | Delete

}

[450] Fix | Delete

[451] Fix | Delete

[452] Fix | Delete

/**

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* Plain custom HTML block is parsed as block with an empty blockName with a filled innerHTML.

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*

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* @param array $block Parse block.

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* @return bool

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*/

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private static function is_custom_html( $block ) {

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return empty( $block['blockName'] ) && ! empty( $block['innerHTML'] );

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}

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/**

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* Serialize template.

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*

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* @param array $parsed_blocks Parsed blocks.

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* @return string

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*/

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private static function serialize_blocks( $parsed_blocks ) {

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return array_reduce(

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$parsed_blocks,

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function ( $carry, $item ) {

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if ( is_array( $item ) ) {

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return $carry . serialize_blocks( $item );

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}

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return $carry . serialize_block( $item );

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},

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''

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);

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}

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}

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[482] Fix | Delete