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<?php

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namespace Yoast\WP\SEO\Actions\Indexing;

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/**

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* Base class of indexing actions.

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abstract class Abstract_Indexing_Action implements Indexation_Action_Interface, Limited_Indexing_Action_Interface {

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/**

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* The transient name.

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* This is a trick to force derived classes to define a transient themselves.

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* @var string

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public const UNINDEXED_COUNT_TRANSIENT = null;

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/**

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* The transient cache key for limited counts.

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* @var string

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public const UNINDEXED_LIMITED_COUNT_TRANSIENT = self::UNINDEXED_COUNT_TRANSIENT . '_limited';

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/**

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* Builds a query for selecting the ID's of unindexed posts.

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* @param bool $limit The maximum number of post IDs to return.

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* @return string The prepared query string.

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abstract protected function get_select_query( $limit );

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/**

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* Builds a query for counting the number of unindexed posts.

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* @return string The prepared query string.

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abstract protected function get_count_query();

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/**

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* Returns a limited number of unindexed posts.

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* @param int $limit Limit the maximum number of unindexed posts that are counted.

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* @return int The limited number of unindexed posts. 0 if the query fails.

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public function get_limited_unindexed_count( $limit ) {

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$transient = \get_transient( static::UNINDEXED_LIMITED_COUNT_TRANSIENT );

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if ( $transient !== false ) {

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return (int) $transient;

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}

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\set_transient( static::UNINDEXED_LIMITED_COUNT_TRANSIENT, 0, ( \MINUTE_IN_SECONDS * 15 ) );

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$query = $this->get_select_query( $limit );

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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Function get_count_query returns a prepared query.

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$unindexed_object_ids = $this->wpdb->get_col( $query );

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$count = (int) \count( $unindexed_object_ids );

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\set_transient( static::UNINDEXED_LIMITED_COUNT_TRANSIENT, $count, ( \MINUTE_IN_SECONDS * 15 ) );

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return $count;

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}

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/**

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* Returns the total number of unindexed posts.

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* @return int|false The total number of unindexed posts. False if the query fails.

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public function get_total_unindexed() {

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$transient = \get_transient( static::UNINDEXED_COUNT_TRANSIENT );

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if ( $transient !== false ) {

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return (int) $transient;

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}

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// Store transient before doing the query so multiple requests won't make multiple queries.

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// Only store this for 15 minutes to ensure that if the query doesn't complete a wrong count is not kept too long.

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\set_transient( static::UNINDEXED_COUNT_TRANSIENT, 0, ( \MINUTE_IN_SECONDS * 15 ) );

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$query = $this->get_count_query();

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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Function get_count_query returns a prepared query.

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$count = $this->wpdb->get_var( $query );

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if ( \is_null( $count ) ) {

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return false;

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}

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\set_transient( static::UNINDEXED_COUNT_TRANSIENT, $count, \DAY_IN_SECONDS );

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/**

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* Action: 'wpseo_indexables_unindexed_calculated' - sets an option to timestamp when there are no unindexed indexables left.

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* @internal

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\do_action( 'wpseo_indexables_unindexed_calculated', static::UNINDEXED_COUNT_TRANSIENT, $count );

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return (int) $count;

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}

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}

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