90 lines
3.0 KiB
PHP
90 lines
3.0 KiB
PHP
<?php
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namespace deliver;
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require_once plugin_dir_path( __FILE__ ) . 'activities.php';
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function deliver_activity( $activity ) {
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$recipients = array();
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foreach ( array( 'to', 'bto', 'cc', 'bcc', 'audience' ) as $field ) {
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$recipients = array_merge(
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$recipients, retrieve_recipients_for_field( $field, $activity )
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);
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}
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$recipients = array_unique( $recipients );
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if ( array_key_exists( 'actor', $activity ) ) {
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$recipients = remove_actor_inbox_from_recipients( $activity['actor'], $recipients );
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}
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$activity = \activities\strip_private_fields( $activity );
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post_activity_to_inboxes( $activity, $recipients );
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}
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function remove_actor_inbox_from_recipients( $actor, $recipients ) {
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if ( array_key_exists( 'inbox', $actor ) ) {
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$key = array_search( $actor['inbox'], $recipients );
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if ( $key ) {
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unset( $recipients[$key] );
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}
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}
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return $recipients;
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}
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function retrieve_recipients_for_field( $field, $activity ) {
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$recipients = array();
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if ( array_key_exists( $field, $activity ) ) {
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foreach ( $activity[$field] as $url ) {
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$recipients = array_merge( $recipients, retrieve_recipients( $url ) );
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}
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}
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return $recipients;
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}
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function retrieve_recipients( $url ) {
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// TODO add an arg to keep track of recursion and cut off after 30 recursions
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$response_body = wp_remote_retrieve_body( wp_remote_get ( $url ) );
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// possible responses:
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// - actor json
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// - collection
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if ( !array_key_exists( 'type', $response_body ) ) {
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return new \WP_Error(
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'invalid_object', __( 'Expected an object type', 'pterotype' )
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);
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}
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switch ( $response_body['type'] ) {
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case 'Collection':
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case 'OrderedCollection':
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$items = array();
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$recipients = array();
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if ( array_key_exists( 'items', $response_body ) ) {
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$items = $response_body['items'];
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} else if ( array_key_exists( 'orderedItems', $response_body ) ) {
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$items = $response_body['orderedItems'];
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}
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if ( count( $items ) > 0 ) {
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// recursive case: call retrieve_recipients on each $item
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// merge the results and return them
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foreach ( $items as $item ) {
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// TODO what will $item look like? Could be an actor JSON, or just a URL?
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$recipients[] = retrieve_recipients( $item );
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}
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}
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return $recipients;
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default: // an actor
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if ( array_key_exists( 'inbox', $response_body ) ) {
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return array( $response_body['inbox'] );
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}
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return array();
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}
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}
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function post_activity_to_inboxes( $activity, $recipients ) {
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foreach ( $inbox as $recipients ) {
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$args = array(
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'body' => $activity,
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'headers' => array( 'Content-Type' => 'application/ld+json' )
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);
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// TODO do something with the result?
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wp_remote_post( $inbox, $args );
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}
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}
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?>
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