Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wordpress-seo-premium/src/integrations/third-party/wincher-keyphrases.php

@@ -0,0 +1,82 @@
+<?php
+// phpcs:disable Yoast.NamingConventions.NamespaceName.Invalid
+// phpcs:disable Yoast.NamingConventions.NamespaceName.MaxExceeded
+
+namespace Yoast\WP\SEO\Integrations\Third_Party;
+
+use WPSEO_Meta;
+use Yoast\WP\SEO\Conditionals\Wincher_Enabled_Conditional;
+use Yoast\WP\SEO\Integrations\Integration_Interface;
+
+/**
+ * Enhances the Wincher keyphrases arrays.
+ */
+class Wincher_Keyphrases implements Integration_Interface {
+
+	/**
+	 * Returns the conditionals based in which this loadable should be active.
+	 *
+	 * @return array
+	 */
+	public static function get_conditionals() {
+		return [ Wincher_Enabled_Conditional::class ];
+	}
+
+	/**
+	 * Initializes the integration.
+	 *
+	 * This is the place to register hooks and filters.
+	 *
+	 * @return void
+	 */
+	public function register_hooks() {
+		\add_filter( 'wpseo_wincher_keyphrases_from_post', [ $this, 'add_additional_keyphrases_from_post' ], 10, 2 );
+		\add_filter( 'wpseo_wincher_all_keyphrases', [ $this, 'add_all_additional_keyphrases' ] );
+	}
+
+	/**
+	 * Enhances the keyphrases collected from a post with the additional ones.
+	 *
+	 * @param array $keyphrases The keyphrases array.
+	 * @param int   $post_id    The ID of the post.
+	 *
+	 * @return array The enhanced array.
+	 */
+	public function add_additional_keyphrases_from_post( $keyphrases, $post_id ) {
+		$additional_keywords = \json_decode( WPSEO_Meta::get_value( 'focuskeywords', $post_id ), true );
+		return \array_merge( $keyphrases, $additional_keywords );
+	}
+
+	/**
+	 * Enhances the keyphrases collected from all the posts with the additional ones.
+	 *
+	 * @param array $keyphrases The keyphrases array.
+	 *
+	 * @return array The enhanced array.
+	 */
+	public function add_all_additional_keyphrases( $keyphrases ) {
+		global $wpdb;
+		$meta_key = WPSEO_Meta::$meta_prefix . 'focuskeywords';
+
+		$query = "
+				SELECT meta_value
+				FROM $wpdb->postmeta
+				JOIN $wpdb->posts ON {$wpdb->posts}.id = {$wpdb->postmeta}.post_id
+				WHERE meta_key = '$meta_key' AND post_status != 'trash'
+			";
+
+		// phpcs:ignore -- ignoring since it's complaining about not using prepare when it's perfectly safe here.
+		$results = $wpdb->get_results( $query );
+
+		if ( $results ) {
+			foreach ( $results as $row ) {
+				$additional_keywords = \json_decode( $row->meta_value, true );
+				if ( $additional_keywords !== null ) {
+					$additional_keywords = \array_column( $additional_keywords, 'keyword' );
+					$keyphrases          = \array_merge( $keyphrases, $additional_keywords );
+				}
+			}
+		}
+		return $keyphrases;
+	}
+}