woothemes/woocommerce

<?php
/**
 * WooCommerce API
 *
 * Defines an interface that API request/response handlers should implement
 *
 * @author      WooThemes
 * @category    API
 * @package     WooCommerce\RestApi
 * @since       2.1
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

interface WC_API_Handler {

    /**
     * Get the content type for the response
     *
     * This should return the proper HTTP content-type for the response
     *
     * @since 2.1
     * @return string
     */
    public function get_content_type();

    /**
     * Parse the raw request body entity into an array
     *
     * @since 2.1
     * @param string $data
     * @return array
     */
    public function parse_body( $data );

    /**
     * Generate a response from an array of data
     *
     * @since 2.1
     * @param array $data
     * @return string
     */
    public function generate_response( $data );

}