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<?php |
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/** |
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* This class handle post thumbnails. |
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* |
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* @since 3.1.5 |
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*/ |
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class Wordlift_Thumbnail_Service { |
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/** |
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* The Thumbnail id meta key. |
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* |
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* @since 3.1.5 |
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*/ |
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const THUMBNAIL_ID_META_KEY = '_thumbnail_id'; |
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/** |
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* The predicate used in RDF to describe the thumbnail. |
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* |
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* @since 3.1.5 |
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*/ |
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const THUMBNAIL_RDF_PREDICATE = 'http://schema.org/image'; |
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/** |
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* The Log service. |
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* |
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* @since 3.1.5 |
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* @access private |
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* @var \Wordlift_Log_Service The Log service. |
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*/ |
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private $log_service; |
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/** |
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* Create an instance of the Thumbnail service. |
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* |
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* @since 3.1.5 |
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*/ |
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public function __construct() { |
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$this->log_service = Wordlift_Log_Service::get_logger( 'Wordlift_Thumbnail_Service' ); |
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} |
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/** |
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* Receive post meta events immediately after a post metadata has been deleted. |
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* |
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* @since 3.1.5 |
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* |
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* @param array $meta_ids An array of deleted metadata entry IDs. |
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* @param int $object_id Object ID. |
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* @param string $meta_key Meta key. |
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* @param mixed $_meta_value Meta value. |
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*/ |
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public function deleted_post_meta( $meta_ids, $object_id, $meta_key, $_meta_value ) { |
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// Return if it's not the Thumbnail id meta key. |
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if ( self::THUMBNAIL_ID_META_KEY !== $meta_key ) { |
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return; |
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} |
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// Do not perform any action is the post is not published. |
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if ( 'publish' !== get_post_status( $object_id ) ) { |
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return; |
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} |
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// Get the post uri and return if it's null. |
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if ( null === ( $uri = wl_get_entity_uri( $object_id ) ) ) { |
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return; |
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} |
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// Prepare the query and execute it. We don't buffer the query since we're not going to reindex. |
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$query = sprintf( 'DELETE { <%s> <%s> ?o . } WHERE { <%1$s> <%2$s> ?o . };', $uri, self::THUMBNAIL_RDF_PREDICATE ); |
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if ( false === rl_execute_sparql_update_query( $query, false ) ) { |
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$this->log_service->error( "An error occurred removing the post thumbnail [ meta ids :: " . ( is_array( $meta_ids ) ? implode( ',', $meta_ids ) : $meta_ids ) . " ][ object id :: $object_id ][ meta key :: $meta_key ][ meta value :: " . ( is_array( $_meta_value ) ? implode( ',', $_meta_value ) : $_meta_value ) . " ][ query :: $query ]" ); |
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} |
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} |
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/** |
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* Receive post meta events immediately after a post metadata has been added. |
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* |
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* @since 3.1.5 |
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* |
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* @param int $mid The meta ID after successful update. |
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* @param int $object_id Object ID. |
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* @param string $meta_key Meta key. |
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* @param mixed $_meta_value Meta value. |
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*/ |
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public function added_post_meta( $mid, $object_id, $meta_key, $_meta_value ) { |
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$this->log_service->trace( "A post meta has been updated [ meta id :: $mid ][ object id :: $object_id ][ meta key :: $meta_key ][ meta value :: " . var_export( $_meta_value, true ) . " ]" ); |
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// Return if it's not the Thumbnail id meta key. |
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if ( self::THUMBNAIL_ID_META_KEY !== $meta_key ) { |
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return; |
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} |
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// The meta value must be the numeric id of the attachment. If it isn't, return. |
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if ( ! is_numeric( $_meta_value ) ) { |
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return; |
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} |
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// Do not perform any action is the post is not published. |
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if ( 'publish' !== get_post_status( $object_id ) ) { |
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return; |
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} |
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// Get the post uri and return if it's null. |
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if ( null === ( $uri = wl_get_entity_uri( $object_id ) ) ) { |
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return; |
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} |
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// Get the attachment url and return if not found. |
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if ( false === ( $attachment_url = wp_get_attachment_url( $_meta_value ) ) ) { |
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return; |
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}; |
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// Prepare the query and execute it. We don't buffer the query since we're not going to reindex. |
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$query = sprintf( 'DELETE { <%1$s> <%2$s> ?o . } WHERE { <%1$s> <%2$s> ?o . }; INSERT DATA { <%1$s> <%2$s> <%3$s> . };', $uri, self::THUMBNAIL_RDF_PREDICATE, $attachment_url ); |
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if ( false === rl_execute_sparql_update_query( $query, false ) ) { |
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$this->log_service->error( "An error occurred removing the post thumbnail [ meta ids :: $mid ][ object id :: $object_id ][ meta key :: $meta_key ][ meta value :: " . var_export( $_meta_value, true ) . " ][ query :: $query ]" ); |
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} |
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} |
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} |
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