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<?php
/**
* WPSEO plugin file.
*
* @package Yoast\WP\SEO\Generators\Schema
*/
namespace Yoast\WP\SEO\Generators\Schema;
/**
* Returns schema FAQ data.
*/
class FAQ extends Abstract_Schema_Piece {
/**
* Determines whether or not a piece should be added to the graph.
*
* @return bool
*/
public function is_needed() {
if ( empty( $this->context->blocks['yoast/faq-block'] ) ) {
return false;
}
if ( ! \is_array( $this->context->schema_page_type ) ) {
$this->context->schema_page_type = [ $this->context->schema_page_type ];
}
$this->context->schema_page_type[] = 'FAQPage';
return true;
}
/**
* Render a list of questions, referencing them by ID.
*
* @return array $data Our Schema graph.
*/
public function generate() {
$ids = [];
$graph = [];
$number_of_items = 0;
foreach ( $this->context->blocks['yoast/faq-block'] as $block ) {
foreach ( $block['attrs']['questions'] as $index => $question ) {
if ( ! isset( $question['jsonAnswer'] ) || empty( $question['jsonAnswer'] ) ) {
continue;
}
$ids[] = [ '@id' => $this->context->canonical . '#' . \esc_attr( $question['id'] ) ];
// Index + 1 below so we start at 1 and count from there.
$graph[] = $this->generate_question_block( $question, ( $index + 1 ) );
++$number_of_items;
}
}
$extra_graph_entries = [
'@type' => 'ItemList',
'mainEntityOfPage' => [ '@id' => $this->context->main_schema_id ],
'numberOfItems' => $number_of_items,
'itemListElement' => $ids,
];
\array_unshift( $graph, $extra_graph_entries );
return $graph;
}
/**
* Generate a Question piece.
*
* @param array $question The question to generate schema for.
* @param int $position The position of the question.
*
* @return array Schema.org Question piece.
*/
protected function generate_question_block( $question, $position ) {
$url = $this->context->canonical . '#' . \esc_attr( $question['id'] );
$data = [
'@type' => 'Question',
'@id' => $url,
'position' => $position,
'url' => $url,
'name' => $this->helpers->schema->html->smart_strip_tags( $question['jsonQuestion'] ),
'answerCount' => 1,
'acceptedAnswer' => $this->add_accepted_answer_property( $question ),
];
$data = $this->helpers->schema->language->add_piece_language( $data );
return $data;
}
/**
* Adds the Questions `acceptedAnswer` property.
*
* @param array $question The question to add the acceptedAnswer to.
*
* @return array Schema.org Question piece.
*/
protected function add_accepted_answer_property( $question ) {
$data = [
'@type' => 'Answer',
'text' => $this->helpers->schema->html->sanitize( $question['jsonAnswer'] ),
];
$data = $this->helpers->schema->language->add_piece_language( $data );
return $data;
}
}