<?php

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declare( strict_types=1 );

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namespace Automattic\WooCommerce\Blocks;

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use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;

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use Automattic\WooCommerce\Blocks\Templates\ComingSoonTemplate;

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use Automattic\WooCommerce\Blocks\Utils\Utils;

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/**

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* BlockTemplatesController class.

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*

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* @internal

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*/

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class BlockTemplatesController {

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/**

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* Directory which contains all templates

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*

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* @var string

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*/

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const TEMPLATES_ROOT_DIR = 'templates';

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/**

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* Initialization method.

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*/

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public function init() {

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add_filter( 'pre_get_block_file_template', array( $this, 'get_block_file_template' ), 10, 3 );

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add_filter( 'get_block_template', array( $this, 'add_block_template_details' ), 10, 3 );

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add_filter( 'get_block_templates', array( $this, 'add_db_templates_with_woo_slug' ), 10, 3 );

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add_filter( 'rest_pre_insert_wp_template', array( $this, 'dont_load_templates_for_suggestions' ), 10, 1 );

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add_filter( 'block_type_metadata_settings', array( $this, 'add_plugin_templates_parts_support' ), 10, 2 );

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add_filter( 'block_type_metadata_settings', array( $this, 'prevent_shortcodes_html_breakage' ), 10, 2 );

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add_action( 'current_screen', array( $this, 'hide_template_selector_in_cart_checkout_pages' ), 10 );

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add_action( 'wp_enqueue_scripts', [ $this, 'dequeue_legacy_scripts' ], 20 );

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// Fix a bug in WordPress 6.8 and lower that caused block hooks not to

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// run in templates registered via the Template Registration API.

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// @see https://github.com/WordPress/gutenberg/issues/71139.

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if ( Utils::wp_version_compare( '6.8', '<=' ) ) {

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add_filter( 'get_block_templates', array( $this, 'run_hooks_on_block_templates' ), 10, 3 );

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}

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}

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/**

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* Dequeue legacy scripts that have no usage with block themes.

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*/

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public function dequeue_legacy_scripts() {

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if ( ! wp_is_block_theme() ) {

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return;

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}

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if ( is_product() ) {

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wp_dequeue_script( 'wc-single-product' );

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}

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}

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/**

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* Renders the `core/template-part` block on the server.

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*

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* This is done because the core handling for template parts only supports templates from the current theme, not

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* from a plugin.

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*

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* @param array $attributes The block attributes.

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* @return string The render.

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*/

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public function render_woocommerce_template_part( $attributes ) {

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if ( isset( $attributes['theme'] ) && 'woocommerce/woocommerce' === $attributes['theme'] ) {

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$template_part = get_block_template( $attributes['theme'] . '//' . $attributes['slug'], 'wp_template_part' );

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if ( $template_part && ! empty( $template_part->content ) ) {

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$content = do_blocks( $template_part->content );

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if ( empty( $attributes['tagName'] ) || tag_escape( $attributes['tagName'] ) !== $attributes['tagName'] ) {

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$html_tag = 'div';

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} else {

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$html_tag = esc_attr( $attributes['tagName'] );

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}

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$wrapper_attributes = get_block_wrapper_attributes();

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return "<$html_tag $wrapper_attributes>" . str_replace( ']]>', ']]&gt;', $content ) . "</$html_tag>";

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}

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}

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return function_exists( '\gutenberg_render_block_core_template_part' ) ? \gutenberg_render_block_core_template_part( $attributes ) : \render_block_core_template_part( $attributes );

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}

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/**

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* By default, the Template Part Block only supports template parts that are in the current theme directory.

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* This render_callback wrapper allows us to add support for plugin-housed template parts.

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*

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* @param array $settings Array of determined settings for registering a block type.

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* @param array $metadata Metadata provided for registering a block type.

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*/

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public function add_plugin_templates_parts_support( $settings, $metadata ) {

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if (

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isset( $metadata['name'], $settings['render_callback'] ) &&

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'core/template-part' === $metadata['name'] &&

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in_array( $settings['render_callback'], array( 'render_block_core_template_part', 'gutenberg_render_block_core_template_part' ), true )

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) {

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$settings['render_callback'] = array( $this, 'render_woocommerce_template_part' );

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}

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return $settings;

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}

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/**

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* Prevents shortcodes in templates having their HTML content broken by wpautop.

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*

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* @see https://core.trac.wordpress.org/ticket/58366 for more info.

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*

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* @param array $settings Array of determined settings for registering a block type.

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* @param array $metadata Metadata provided for registering a block type.

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*/

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public function prevent_shortcodes_html_breakage( $settings, $metadata ) {

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if (

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isset( $metadata['name'], $settings['render_callback'] ) &&

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'core/shortcode' === $metadata['name']

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) {

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$settings['original_render_callback'] = $settings['render_callback'];

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$settings['render_callback'] = function ( $attributes, $content ) use ( $settings ) {

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// The shortcode has already been rendered, so look for the cart/checkout HTML.

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if ( strstr( $content, 'woocommerce-cart-form' ) || strstr( $content, 'wc-empty-cart-message' ) || strstr( $content, 'woocommerce-checkout-form' ) ) {

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// Return early before wpautop runs again.

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return $content;

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}

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$render_callback = $settings['original_render_callback'];

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return $render_callback( $attributes, $content );

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};

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}

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return $settings;

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}

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/**

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* Prevents the pages that are assigned as Cart/Checkout from showing the "template" selector in the page-editor.

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* We want to avoid this flow and point users towards the Site Editor instead.

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*

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* @return void

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*/

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public function hide_template_selector_in_cart_checkout_pages() {

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if ( ! is_admin() ) {

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return;

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}

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$current_screen = get_current_screen();

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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if ( $current_screen && 'page' === $current_screen->id && ! empty( $_GET['post'] ) && in_array( absint( $_GET['post'] ), array( wc_get_page_id( 'cart' ), wc_get_page_id( 'checkout' ) ), true ) ) {

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wp_add_inline_style( 'wc-blocks-editor-style', '.edit-post-post-template { display: none; }' );

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}

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}

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/**

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* This function checks if there's a block template file in `woocommerce/templates/templates/`

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* to return to pre_get_posts short-circuiting the query in Gutenberg.

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*

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* @param \WP_Block_Template|null $template Return a block template object to short-circuit the default query,

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* or null to allow WP to run its normal queries.

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* @param string $id Template unique identifier (example: theme_slug//template_slug).

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* @param string $template_type wp_template or wp_template_part.

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*

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* @return mixed|\WP_Block_Template|\WP_Error

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*/

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public function get_block_file_template( $template, $id, $template_type ) {

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$template_name_parts = explode( '//', $id );

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if ( count( $template_name_parts ) < 2 ) {

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return $template;

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}

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list( $template_id, $template_slug ) = $template_name_parts;

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// This is a real edge-case, we are supporting users who have saved templates under the deprecated slug. See its definition for more information.

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// You can likely ignore this code unless you're supporting/debugging early customised templates.

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if ( BlockTemplateUtils::DEPRECATED_PLUGIN_SLUG === strtolower( $template_id ) ) {

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// Because we are using get_block_templates we have to unhook this method to prevent a recursive loop where this filter is applied.

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remove_filter( 'pre_get_block_file_template', array( $this, 'get_block_file_template' ), 10, 3 );

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$template_with_deprecated_id = get_block_template( $id, $template_type );

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// Let's hook this method back now that we have used the function.

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add_filter( 'pre_get_block_file_template', array( $this, 'get_block_file_template' ), 10, 3 );

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if ( null !== $template_with_deprecated_id ) {

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return $template_with_deprecated_id;

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}

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}

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// If we are not dealing with a WooCommerce template let's return early and let it continue through the process.

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if ( BlockTemplateUtils::PLUGIN_SLUG !== $template_id ) {

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return $template;

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}

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// If we don't have a template let Gutenberg do its thing.

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if ( ! $this->block_template_is_available( $template_slug, $template_type ) ) {

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return $template;

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}

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$directory = BlockTemplateUtils::get_templates_directory( $template_type );

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$template_file_path = $directory . '/' . $template_slug . '.html';

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$template_object = BlockTemplateUtils::create_new_block_template_object( $template_file_path, $template_type, $template_slug );

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$template_built = BlockTemplateUtils::build_template_result_from_file( $template_object, $template_type );

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if ( null !== $template_built ) {

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return $template_built;

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}

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// Hand back over to Gutenberg if we can't find a template.

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return $template;

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}

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/**

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* Add the template title and description to WooCommerce templates.

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*

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* @param WP_Block_Template|null $block_template The found block template, or null if there isn't one.

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* @param string $id Template unique identifier (example: 'theme_slug//template_slug').

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* @param array $template_type Template type: 'wp_template' or 'wp_template_part'.

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* @return WP_Block_Template|null

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*/

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public function add_block_template_details( $block_template, $id, $template_type ) {

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return BlockTemplateUtils::update_template_data( $block_template, $template_type );

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}

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/**

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* Run hooks on block templates.

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*

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* @param array $templates The block templates.

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* @return array The block templates.

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*/

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public function run_hooks_on_block_templates( $templates ) {

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foreach ( $templates as $template ) {

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if ( 'plugin' === $template->source && 'woocommerce' === $template->plugin ) {

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$template->content = apply_block_hooks_to_content( $template->content, $template, 'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata' );

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}

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}

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return $templates;

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}

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/**

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* Add the block template objects currently saved in the database with the WooCommerce slug.

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* That is, templates that have been customised before WooCommerce started to use the

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* Template Registration API.

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*

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* @param array $query_result Array of template objects.

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* @param array $query Optional. Arguments to retrieve templates.

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* @param string $template_type wp_template or wp_template_part.

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* @return array

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*/

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public function add_db_templates_with_woo_slug( $query_result, $query, $template_type ) {

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$slugs = isset( $query['slug__in'] ) ? $query['slug__in'] : array();

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if ( ! BlockTemplateUtils::supports_block_templates( $template_type ) && ! in_array( ComingSoonTemplate::SLUG, $slugs, true ) ) {

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return $query_result;

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}

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// For templates, we only need to load templates from the database. For

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// template parts, we also need to load them from the filesystem, as

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// there is no Template registration API for template parts.

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$template_files = 'wp_template' === $template_type ? BlockTemplateUtils::get_block_templates_from_db( $slugs, $template_type ) : $this->get_block_templates( $slugs, $template_type );

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$new_templates = array();

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foreach ( $template_files as $template_file ) {

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// It would be custom if the template was modified in the editor, so if it's not custom we can load it from

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// the filesystem.

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if ( 'custom' === $template_file->source ) {

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if (

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BlockTemplateUtils::PLUGIN_SLUG === $template_file->theme ||

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BlockTemplateUtils::DEPRECATED_PLUGIN_SLUG === $template_file->theme

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) {

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array_unshift( $new_templates, $template_file );

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}

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continue;

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}

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// We only need to build templates from the filesystem for template parts.

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// Regular templates are handled by the Template registration API.

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if ( 'wp_template_part' === $template_type ) {

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$theme_slug = get_stylesheet();

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$possible_template_ids = [

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$theme_slug . '//' . $template_file->slug,

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$theme_slug . '//' . BlockTemplateUtils::DIRECTORY_NAMES['TEMPLATE_PARTS'] . '/' . $template_file->slug,

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$theme_slug . '//' . BlockTemplateUtils::DIRECTORY_NAMES['DEPRECATED_TEMPLATE_PARTS'] . '/' . $template_file->slug,

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];

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$is_custom = false;

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$query_result_template_ids = array_column( $query_result, 'id' );

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foreach ( $possible_template_ids as $template_id ) {

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if ( in_array( $template_id, $query_result_template_ids, true ) ) {

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$is_custom = true;

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break;

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}

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}

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$fits_slug_query =

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! isset( $query['slug__in'] ) || in_array( $template_file->slug, $query['slug__in'], true );

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$fits_area_query =

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! isset( $query['area'] ) || ( property_exists( $template_file, 'area' ) && $template_file->area === $query['area'] );

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$is_from_filesystem = isset( $template_file->path );

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$should_include = ! $is_custom && $fits_slug_query && $fits_area_query && $is_from_filesystem;

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if ( $should_include ) {

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$template = BlockTemplateUtils::build_template_result_from_file( $template_file, $template_type );

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$query_result[] = $template;

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}

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}

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}

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$query_result = array_merge( $new_templates, $query_result );

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if ( count( $new_templates ) > 0 ) {

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// If there are certain templates that have been customised with the `woocommerce/woocommerce` slug,

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// We prioritize them over the theme and WC templates. That is, we remove the theme and WC templates

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// from the results and only keep the customised ones.

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$query_result = BlockTemplateUtils::remove_templates_with_custom_alternative( $query_result );

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// There is the chance that the user customized the default template, installed a theme with a custom template

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// and customized that one as well. When that happens, duplicates might appear in the list.

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// See: https://github.com/woocommerce/woocommerce/issues/42220.

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$query_result = BlockTemplateUtils::remove_duplicate_customized_templates( $query_result );

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}

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/**

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* WC templates from theme aren't included in `$this->get_block_templates()` but are handled by Gutenberg.

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* We need to do additional search through all templates file to update title and description for WC

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* templates that aren't listed in theme.json.

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*/

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$query_result = array_map(

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function ( $template ) use ( $template_type ) {

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return BlockTemplateUtils::update_template_data( $template, $template_type );

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},

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$query_result

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);

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return $query_result;

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}

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/**

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* When creating a template from the WP suggestion, don't load the templates with the WooCommerce slug.

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* Otherwise they take precedence and the new template can't be created.

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*

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* @param stdClass $prepared_post An object representing a single post prepared

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* for inserting or updating the database.

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*/

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public function dont_load_templates_for_suggestions( $prepared_post ) {

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if ( isset( $prepared_post->meta_input['is_wp_suggestion'] ) ) {

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remove_filter( 'get_block_templates', array( $this, 'add_db_templates_with_woo_slug' ), 10, 3 );

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}

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return $prepared_post;

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}

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/**

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* Gets the templates from the WooCommerce blocks directory, skipping those for which a template already exists

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* in the theme directory.

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*

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* @param string[] $slugs An array of slugs to filter templates by. Templates whose slug does not match will not be returned.

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* @param array $already_found_templates Templates that have already been found, these are customised templates that are loaded from the database.

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* @param string $template_type wp_template or wp_template_part.

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*

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* @return array Templates from the WooCommerce blocks plugin directory.

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*/

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public function get_block_templates_from_woocommerce( $slugs, $already_found_templates, $template_type = 'wp_template' ) {

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$template_files = BlockTemplateUtils::get_template_paths( $template_type );

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$templates = array();

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foreach ( $template_files as $template_file ) {

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// Skip the template if it's blockified, and we should only use classic ones.

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if ( ! BlockTemplateUtils::should_use_blockified_product_grid_templates() && strpos( $template_file, 'blockified' ) !== false ) {

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continue;

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}

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$template_slug = BlockTemplateUtils::generate_template_slug_from_path( $template_file );

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// This template does not have a slug we're looking for. Skip it.

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if ( is_array( $slugs ) && count( $slugs ) > 0 && ! in_array( $template_slug, $slugs, true ) ) {

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continue;

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}

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// If the theme already has a template, or the template is already in the list (i.e. it came from the

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// database) then we should not overwrite it with the one from the filesystem.

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if (

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BlockTemplateUtils::theme_has_template( $template_slug ) ||

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count(

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array_filter(

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$already_found_templates,

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function ( $template ) use ( $template_slug ) {

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$template_obj = (object) $template; //phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.Found

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return $template_obj->slug === $template_slug;

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}

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)

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) > 0 ) {

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continue;

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}

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// At this point the template only exists in the Blocks filesystem and has not been saved in the DB,

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// or superseded by the theme.

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$templates[] = BlockTemplateUtils::create_new_block_template_object( $template_file, $template_type, $template_slug );

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}

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return $templates;

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}

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/**

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* Get and build the block template objects from the block template files.

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*

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* @param array $slugs An array of slugs to retrieve templates for.

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* @param string $template_type wp_template or wp_template_part.

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*

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* @return array WP_Block_Template[] An array of block template objects.

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*/

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public function get_block_templates( $slugs = array(), $template_type = 'wp_template' ) {

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$templates_from_db = BlockTemplateUtils::get_block_templates_from_db( $slugs, $template_type );

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$templates_from_woo = $this->get_block_templates_from_woocommerce( $slugs, $templates_from_db, $template_type );

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return array_merge( $templates_from_db, $templates_from_woo );

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}

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/**

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* Checks whether a block template with that name exists in Woo Blocks

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*

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* @param string $template_name Template to check.

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* @param array $template_type wp_template or wp_template_part.

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*

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* @return boolean

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*/

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public function block_template_is_available( $template_name, $template_type = 'wp_template' ) {

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if ( ! $template_name ) {

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return false;

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}

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$directory = BlockTemplateUtils::get_templates_directory( $template_type ) . '/' . $template_name . '.html';

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return is_readable(

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$directory

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) || $this->get_block_templates( array( $template_name ), $template_type );

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}

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}

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