BP_REST_Messages_Endpoint::prepare_item_for_database( WP_REST_Request $request )

	protected function prepare_item_for_database( $request ) {
		$prepared_thread = new stdClass();
		$schema          = $this->get_item_schema();
		$thread          = $this->get_thread_object( $request['id'] );

		if ( ! empty( $schema['properties']['id'] ) && ! empty( $request['id'] ) ) {
			$prepared_thread->thread_id = $request['id'];
		} elseif ( ! empty( $thread->thread_id ) ) {
			$prepared_thread->thread_id = $thread->thread_id;
		}

		if ( ! empty( $schema['properties']['sender_id'] ) && ! empty( $request['sender_id'] ) ) {
			$prepared_thread->sender_id = $thread->sender_id;
		} elseif ( ! empty( $thread->sender_id ) ) {
			$prepared_thread->sender_id = $thread->sender_id;
		} else {
			$prepared_thread->sender_id = bp_loggedin_user_id();
		}

		if ( ! empty( $schema['properties']['message'] ) && ! empty( $request['message'] ) ) {
			$prepared_thread->content = $request['message'];
		} elseif ( ! empty( $thread->message ) ) {
			$prepared_thread->message = $thread->message;
		}

		if ( ! empty( $schema['properties']['subject'] ) && ! empty( $request['subject'] ) ) {
			$prepared_thread->subject = $request['subject'];
		} elseif ( ! empty( $thread->subject ) ) {
			$prepared_thread->subject = $thread->subject;
		}

		if ( ! empty( $schema['properties']['recipients'] ) && ! empty( $request['recipients'] ) ) {
			$prepared_thread->recipients = $request['recipients'];
		} elseif ( ! empty( $thread->recipients ) ) {
			$prepared_thread->recipients = wp_parse_id_list( wp_list_pluck( $thread->recipients, 'user_id' ) );
		}

		$prepared_thread->mark_visible = true;

		/**
		 * Filters a message before it is inserted via the REST API.
		 *
		 * @param stdClass        $prepared_thread An object prepared for inserting into the database.
		 * @param WP_REST_Request $request         Request object.
		 *
		 * @since 0.1.0
		 */
		return apply_filters( 'bp_rest_message_pre_insert_value', $prepared_thread, $request );
	}