<?php

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/**

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* AssignDefaultCategory class file.

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*/

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namespace Automattic\WooCommerce\Internal;

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defined( 'ABSPATH' ) || exit;

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/**

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* Class to assign default category to products.

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*/

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class AssignDefaultCategory {

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/**

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* Class initialization, to be executed when the class is resolved by the container.

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*

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* @internal

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*/

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final public function init() {

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add_action( 'wc_schedule_update_product_default_cat', array( $this, 'maybe_assign_default_product_cat' ) );

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}

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/**

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* When a product category is deleted, we need to check

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* if the product has no categories assigned. Then assign

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* it a default category. We delay this with a scheduled

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* action job to not block the response.

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*

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* @return void

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*/

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public function schedule_action() {

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WC()->queue()->schedule_single(

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time(),

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'wc_schedule_update_product_default_cat',

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array(),

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'wc_update_product_default_cat'

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);

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}

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/**

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* Assigns default product category for products

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* that have no categories.

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*

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* @return void

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*/

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public function maybe_assign_default_product_cat() {

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global $wpdb;

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$default_category = get_option( 'default_product_cat', 0 );

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if ( $default_category ) {

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$affected_rows = $wpdb->query(

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$wpdb->prepare(

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"INSERT INTO {$wpdb->term_relationships} (object_id, term_taxonomy_id)

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SELECT DISTINCT posts.ID, %s FROM {$wpdb->posts} posts

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LEFT JOIN

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(

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SELECT object_id FROM {$wpdb->term_relationships} term_relationships

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LEFT JOIN {$wpdb->term_taxonomy} term_taxonomy ON term_relationships.term_taxonomy_id = term_taxonomy.term_taxonomy_id

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WHERE term_taxonomy.taxonomy = 'product_cat'

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) AS tax_query

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ON posts.ID = tax_query.object_id

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WHERE posts.post_type = 'product'

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AND tax_query.object_id IS NULL",

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$default_category

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)

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);

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if ( $affected_rows > 0 ) {

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wp_cache_flush();

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delete_transient( 'wc_term_counts' );

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wp_update_term_count_now( array( $default_category ), 'product_cat' );

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}

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}

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}

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}

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