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<?php |
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|
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namespace Yoast\WP\SEO\Builders; |
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|
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use WP_Post; |
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use WP_Term; |
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use WPSEO_Meta; |
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use Yoast\WP\SEO\Helpers\Options_Helper; |
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use Yoast\WP\SEO\Helpers\Post_Helper; |
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use Yoast\WP\SEO\Models\Indexable; |
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use Yoast\WP\SEO\Repositories\Indexable_Hierarchy_Repository; |
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use Yoast\WP\SEO\Repositories\Indexable_Repository; |
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use Yoast\WP\SEO\Repositories\Primary_Term_Repository; |
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|
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/** |
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* Builder for the indexables hierarchy. |
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* |
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* Builds the indexable hierarchy for indexables. |
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*/ |
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class Indexable_Hierarchy_Builder { |
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|
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/** |
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* Holds a list of indexables where the ancestors are saved for. |
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* |
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* @var array |
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*/ |
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protected $saved_ancestors = []; |
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|
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/** |
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* The indexable repository. |
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* |
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* @var Indexable_Repository |
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*/ |
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private $indexable_repository; |
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|
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/** |
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* The indexable hierarchy repository. |
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* |
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* @var Indexable_Hierarchy_Repository |
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*/ |
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private $indexable_hierarchy_repository; |
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|
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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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private $primary_term_repository; |
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|
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/** |
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* The options helper. |
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* |
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* @var Options_Helper |
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*/ |
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private $options; |
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|
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/** |
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* Holds the Post_Helper instance. |
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* |
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* @var Post_Helper |
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*/ |
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private $post; |
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|
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/** |
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* Indexable_Author_Builder constructor. |
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* |
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* @param Indexable_Hierarchy_Repository $indexable_hierarchy_repository The indexable hierarchy repository. |
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* @param Primary_Term_Repository $primary_term_repository The primary term repository. |
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* @param Options_Helper $options The options helper. |
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* @param Post_Helper $post The post helper. |
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*/ |
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public function __construct( |
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Indexable_Hierarchy_Repository $indexable_hierarchy_repository, |
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Primary_Term_Repository $primary_term_repository, |
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Options_Helper $options, |
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Post_Helper $post |
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) { |
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$this->indexable_hierarchy_repository = $indexable_hierarchy_repository; |
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$this->primary_term_repository = $primary_term_repository; |
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$this->options = $options; |
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$this->post = $post; |
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} |
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|
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/** |
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* Sets the indexable repository. Done to avoid circular dependencies. |
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* |
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* @required |
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* |
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* @param Indexable_Repository $indexable_repository The indexable repository. |
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*/ |
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public function set_indexable_repository( Indexable_Repository $indexable_repository ) { |
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$this->indexable_repository = $indexable_repository; |
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} |
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|
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/** |
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* Builds the ancestor hierarchy for an indexable. |
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* |
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* @param Indexable $indexable The indexable. |
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* |
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* @return Indexable The indexable. |
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*/ |
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public function build( Indexable $indexable ) { |
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if ( $this->hierarchy_is_built( $indexable ) ) { |
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return $indexable; |
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} |
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|
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$this->indexable_hierarchy_repository->clear_ancestors( $indexable->id ); |
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|
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$indexable_id = $this->get_indexable_id( $indexable ); |
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$ancestors = []; |
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if ( $indexable->object_type === 'post' ) { |
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$this->add_ancestors_for_post( $indexable_id, $indexable->object_id, $ancestors ); |
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} |
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|
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if ( $indexable->object_type === 'term' ) { |
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$this->add_ancestors_for_term( $indexable_id, $indexable->object_id, $ancestors ); |
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} |
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$indexable->ancestors = \array_reverse( \array_values( $ancestors ) ); |
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$indexable->has_ancestors = ! empty( $ancestors ); |
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if ( $indexable->id ) { |
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$this->save_ancestors( $indexable ); |
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} |
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|
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return $indexable; |
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} |
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|
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/** |
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* Checks if a hierarchy is built already for the given indexable. |
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* |
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* @param Indexable $indexable The indexable to check. |
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* |
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* @return bool True when indexable has a built hierarchy. |
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*/ |
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protected function hierarchy_is_built( Indexable $indexable ) { |
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if ( \in_array( $indexable->id, $this->saved_ancestors, true ) ) { |
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return true; |
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} |
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|
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$this->saved_ancestors[] = $indexable->id; |
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|
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return false; |
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} |
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|
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/** |
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* Saves the ancestors. |
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* |
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* @param Indexable $indexable The indexable. |
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* |
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* @return void |
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*/ |
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private function save_ancestors( $indexable ) { |
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if ( empty( $indexable->ancestors ) ) { |
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$this->indexable_hierarchy_repository->add_ancestor( $indexable->id, 0, 0 ); |
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return; |
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} |
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$depth = \count( $indexable->ancestors ); |
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foreach ( $indexable->ancestors as $ancestor ) { |
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$this->indexable_hierarchy_repository->add_ancestor( $indexable->id, $ancestor->id, $depth ); |
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--$depth; |
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} |
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} |
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|
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/** |
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* Adds ancestors for a post. |
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* |
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* @param int $indexable_id The indexable id, this is the id of the original indexable. |
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* @param int $post_id The post id, this is the id of the post currently being evaluated. |
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* @param int[] $parents The indexable IDs of all parents. |
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* |
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* @return void |
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*/ |
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private function add_ancestors_for_post( $indexable_id, $post_id, &$parents ) { |
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$post = $this->post->get_post( $post_id ); |
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|
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if ( ! isset( $post->post_parent ) ) { |
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return; |
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} |
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|
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if ( $post->post_parent !== 0 && $this->post->get_post( $post->post_parent ) !== null ) { |
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$ancestor = $this->indexable_repository->find_by_id_and_type( $post->post_parent, 'post' ); |
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if ( $this->is_invalid_ancestor( $ancestor, $indexable_id, $parents ) ) { |
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return; |
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} |
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|
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$parents[ $this->get_indexable_id( $ancestor ) ] = $ancestor; |
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|
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$this->add_ancestors_for_post( $indexable_id, $ancestor->object_id, $parents ); |
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|
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return; |
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} |
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$primary_term_id = $this->find_primary_term_id_for_post( $post ); |
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|
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if ( $primary_term_id === 0 ) { |
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return; |
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} |
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$ancestor = $this->indexable_repository->find_by_id_and_type( $primary_term_id, 'term' ); |
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if ( $this->is_invalid_ancestor( $ancestor, $indexable_id, $parents ) ) { |
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return; |
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} |
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|
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$parents[ $this->get_indexable_id( $ancestor ) ] = $ancestor; |
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|
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$this->add_ancestors_for_term( $indexable_id, $ancestor->object_id, $parents ); |
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} |
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|
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/** |
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* Adds ancestors for a term. |
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* |
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* @param int $indexable_id The indexable id, this is the id of the original indexable. |
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* @param int $term_id The term id, this is the id of the term currently being evaluated. |
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* @param int[] $parents The indexable IDs of all parents. |
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* |
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* @return void |
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*/ |
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private function add_ancestors_for_term( $indexable_id, $term_id, &$parents = [] ) { |
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$term = \get_term( $term_id ); |
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$term_parents = $this->get_term_parents( $term ); |
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|
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foreach ( $term_parents as $parent ) { |
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$ancestor = $this->indexable_repository->find_by_id_and_type( $parent->term_id, 'term' ); |
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if ( $this->is_invalid_ancestor( $ancestor, $indexable_id, $parents ) ) { |
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continue; |
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} |
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$parents[ $this->get_indexable_id( $ancestor ) ] = $ancestor; |
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} |
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} |
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|
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/** |
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* Gets the primary term ID for a post. |
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* |
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* @param WP_Post $post The post. |
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* |
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* @return int The primary term ID. 0 if none exists. |
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*/ |
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private function find_primary_term_id_for_post( $post ) { |
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$main_taxonomy = $this->options->get( 'post_types-' . $post->post_type . '-maintax' ); |
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|
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if ( ! $main_taxonomy || $main_taxonomy === '0' ) { |
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return 0; |
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} |
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|
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$primary_term_id = $this->get_primary_term_id( $post->ID, $main_taxonomy ); |
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|
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if ( $primary_term_id ) { |
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$term = \get_term( $primary_term_id ); |
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if ( $term !== null && ! \is_wp_error( $term ) ) { |
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return $primary_term_id; |
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} |
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} |
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|
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$terms = \get_the_terms( $post->ID, $main_taxonomy ); |
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|
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if ( ! \is_array( $terms ) || empty( $terms ) ) { |
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return 0; |
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} |
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|
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return $this->find_deepest_term_id( $terms ); |
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} |
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|
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/** |
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* Find the deepest term in an array of term objects. |
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* |
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* @param array $terms Terms set. |
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* |
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* @return int The deepest term ID. |
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*/ |
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private function find_deepest_term_id( $terms ) { |
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/* |
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* Let's find the deepest term in this array, by looping through and then |
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* unsetting every term that is used as a parent by another one in the array. |
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*/ |
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$terms_by_id = []; |
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foreach ( $terms as $term ) { |
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$terms_by_id[ $term->term_id ] = $term; |
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} |
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foreach ( $terms as $term ) { |
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unset( $terms_by_id[ $term->parent ] ); |
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} |
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|
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/* |
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* As we could still have two subcategories, from different parent categories, |
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* let's pick the one with the lowest ordered ancestor. |
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*/ |
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$parents_count = -1; |
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$term_order = 9999; // Because ASC. |
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$deepest_term = \reset( $terms_by_id ); |
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foreach ( $terms_by_id as $term ) { |
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$parents = $this->get_term_parents( $term ); |
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|
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$new_parents_count = \count( $parents ); |
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|
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if ( $new_parents_count < $parents_count ) { |
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continue; |
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} |
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|
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$parent_order = 9999; // Set default order. |
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foreach ( $parents as $parent ) { |
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if ( $parent->parent === 0 && isset( $parent->term_order ) ) { |
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$parent_order = $parent->term_order; |
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} |
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} |
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|
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// Check if parent has lowest order. |
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if ( $new_parents_count > $parents_count || $parent_order < $term_order ) { |
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$term_order = $parent_order; |
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$deepest_term = $term; |
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} |
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|
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$parents_count = $new_parents_count; |
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} |
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|
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return $deepest_term->term_id; |
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} |
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|
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/** |
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* Get a term's parents. |
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* |
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* @param WP_Term $term Term to get the parents for. |
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* |
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* @return WP_Term[] An array of all this term's parents. |
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*/ |
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private function get_term_parents( $term ) { |
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$tax = $term->taxonomy; |
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$parents = []; |
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while ( (int) $term->parent !== 0 ) { |
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$term = \get_term( $term->parent, $tax ); |
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$parents[] = $term; |
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} |
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|
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return $parents; |
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} |
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|
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/** |
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* Checks if an ancestor is valid to add. |
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* |
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* @param Indexable $ancestor The ancestor (presumed indexable) to check. |
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* @param int $indexable_id The indexable id we're adding ancestors for. |
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* @param int[] $parents The indexable ids of the parents already added. |
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* |
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* @return bool |
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*/ |
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private function is_invalid_ancestor( $ancestor, $indexable_id, $parents ) { |
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// If the ancestor is not an Indexable, it is invalid by default. |
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if ( ! \is_a( $ancestor, 'Yoast\WP\SEO\Models\Indexable' ) ) { |
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return true; |
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} |
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|
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// Don't add ancestors if they're unindexed, already added or the same as the main object. |
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if ( $ancestor->post_status === 'unindexed' ) { |
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return true; |
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} |
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|
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$ancestor_id = $this->get_indexable_id( $ancestor ); |
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if ( \array_key_exists( $ancestor_id, $parents ) ) { |
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return true; |
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} |
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|
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if ( $ancestor_id === $indexable_id ) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Returns the ID for an indexable. Catches situations where the id is null due to errors. |
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* |
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* @param Indexable $indexable The indexable. |
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* |
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* @return string|int A unique ID for the indexable. |
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*/ |
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private function get_indexable_id( Indexable $indexable ) { |
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if ( $indexable->id === 0 ) { |
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return "{$indexable->object_type}:{$indexable->object_id}"; |
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} |
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|
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return $indexable->id; |
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} |
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|
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/** |
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* Returns the primary term id of a post. |
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* |
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* @param int $post_id The post ID. |
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* @param string $main_taxonomy The main taxonomy. |
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* |
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* @return int The ID of the primary term. |
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*/ |
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private function get_primary_term_id( $post_id, $main_taxonomy ) { |
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$primary_term = $this->primary_term_repository->find_by_post_id_and_taxonomy( $post_id, $main_taxonomy, false ); |
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|
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if ( $primary_term ) { |
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return $primary_term->term_id; |
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} |
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|
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return \get_post_meta( $post_id, WPSEO_Meta::$meta_prefix . 'primary_' . $main_taxonomy, true ); |
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} |
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} |
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|
