<?php

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namespace Yoast\WP\SEO\Integrations\Watchers;

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use WP_Term;

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use WPSEO_Meta;

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use WPSEO_Primary_Term;

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use Yoast\WP\SEO\Builders\Primary_Term_Builder;

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use Yoast\WP\SEO\Conditionals\Migrations_Conditional;

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use Yoast\WP\SEO\Helpers\Primary_Term_Helper;

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use Yoast\WP\SEO\Helpers\Site_Helper;

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use Yoast\WP\SEO\Integrations\Integration_Interface;

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use Yoast\WP\SEO\Repositories\Primary_Term_Repository;

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/**

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* Primary Term watcher.

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*

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* Watches Posts to save the primary term when set.

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*/

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class Primary_Term_Watcher implements Integration_Interface {

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/**

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* The primary term repository.

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*

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* @var Primary_Term_Repository

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*/

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protected $repository;

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/**

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* Represents the site helper.

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*

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* @var Site_Helper

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*/

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protected $site;

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/**

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* The primary term helper.

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*

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* @var Primary_Term_Helper

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*/

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protected $primary_term;

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/**

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* The primary term builder.

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*

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* @var Primary_Term_Builder

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*/

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protected $primary_term_builder;

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/**

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* Returns the conditionals based on which this loadable should be active.

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*

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* @return array

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*/

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public static function get_conditionals() {

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return [ Migrations_Conditional::class ];

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}

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/**

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* Primary_Term_Watcher constructor.

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*

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* @codeCoverageIgnore It sets dependencies.

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*

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* @param Primary_Term_Repository $repository The primary term repository.

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* @param Site_Helper $site The site helper.

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* @param Primary_Term_Helper $primary_term The primary term helper.

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* @param Primary_Term_Builder $primary_term_builder The primary term builder.

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*/

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public function __construct(

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Primary_Term_Repository $repository,

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Site_Helper $site,

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Primary_Term_Helper $primary_term,

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Primary_Term_Builder $primary_term_builder

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) {

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$this->repository = $repository;

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$this->site = $site;

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$this->primary_term = $primary_term;

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$this->primary_term_builder = $primary_term_builder;

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}

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/**

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* Initializes the integration.

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*

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* This is the place to register hooks and filters.

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*

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* @return void

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*/

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public function register_hooks() {

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\add_action( 'save_post', [ $this, 'save_primary_terms' ], \PHP_INT_MAX );

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\add_action( 'delete_post', [ $this, 'delete_primary_terms' ] );

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}

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/**

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* Saves all selected primary terms.

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*

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* @param int $post_id Post ID to save primary terms for.

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*

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* @return void

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*/

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public function save_primary_terms( $post_id ) {

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// Bail if this is a multisite installation and the site has been switched.

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if ( $this->site->is_multisite_and_switched() ) {

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return;

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}

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$taxonomies = $this->primary_term->get_primary_term_taxonomies( $post_id );

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foreach ( $taxonomies as $taxonomy ) {

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$this->save_primary_term( $post_id, $taxonomy );

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}

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$this->primary_term_builder->build( $post_id );

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}

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/**

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* Saves the primary term for a specific taxonomy.

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*

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* @param int $post_id Post ID to save primary term for.

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* @param WP_Term $taxonomy Taxonomy to save primary term for.

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*

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* @return void

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*/

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protected function save_primary_term( $post_id, $taxonomy ) {

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if ( isset( $_POST[ WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy->name . '_term' ] ) && \is_string( $_POST[ WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy->name . '_term' ] ) ) {

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// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Reason: We are casting to an integer.

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$primary_term_id = (int) \wp_unslash( $_POST[ WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy->name . '_term' ] );

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if ( $primary_term_id <= 0 ) {

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$primary_term = '';

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}

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else {

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$primary_term = (string) $primary_term_id;

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}

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// We accept an empty string here because we need to save that if no terms are selected.

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if ( \check_admin_referer( 'save-primary-term', WPSEO_Meta::$form_prefix . 'primary_' . $taxonomy->name . '_nonce' ) !== null ) {

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$primary_term_object = new WPSEO_Primary_Term( $taxonomy->name, $post_id );

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$primary_term_object->set_primary_term( $primary_term );

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}

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}

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}

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/**

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* Deletes primary terms for a post.

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*

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* @param int $post_id The post to delete the terms of.

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*

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* @return void

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*/

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public function delete_primary_terms( $post_id ) {

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foreach ( $this->primary_term->get_primary_term_taxonomies( $post_id ) as $taxonomy ) {

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$primary_term_indexable = $this->repository->find_by_post_id_and_taxonomy( $post_id, $taxonomy->name, false );

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if ( ! $primary_term_indexable ) {

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continue;

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}

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$primary_term_indexable->delete();

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}

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}

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}

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