woocommerce/woocommerce

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includes/legacy/api/v1/class-wc-api-customers.php

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<?php
/**
 * WooCommerce API Customers Class
 *
 * Handles requests to the /customers endpoint
 *
 * @author      WooThemes
 * @category    API
 * @package     WooCommerce\RestApi
 * @since       2.1
 * @version     2.1
 */

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

class WC_API_Customers extends WC_API_Resource {

    /** @var string $base the route base */
    protected $base = '/customers';

    /** @var string $created_at_min for date filtering */
    private $created_at_min = null;

    /** @var string $created_at_max for date filtering */
    private $created_at_max = null;

    /**
     * Setup class, overridden to provide customer data to order response
     *
     * @since 2.1
     * @param WC_API_Server $server
     */
    public function __construct( WC_API_Server $server ) {

        parent::__construct( $server );

        // add customer data to order responses
        add_filter( 'woocommerce_api_order_response', array( $this, 'add_customer_data' ), 10, 2 );

        // modify WP_User_Query to support created_at date filtering
        add_action( 'pre_user_query', array( $this, 'modify_user_query' ) );
    }

    /**
     * Register the routes for this class
     *
     * GET /customers
     * GET /customers/count
     * GET /customers/<id>
     * GET /customers/<id>/orders
     *
     * @since 2.1
     * @param array $routes
     * @return array
     */
    public function register_routes( $routes ) {

        # GET /customers
        $routes[ $this->base ] = array(
            array( array( $this, 'get_customers' ),     WC_API_SERVER::READABLE ),
        );

        # GET /customers/count
        $routes[ $this->base . '/count' ] = array(
            array( array( $this, 'get_customers_count' ), WC_API_SERVER::READABLE ),
        );

        # GET /customers/<id>
        $routes[ $this->base . '/(?P<id>\d+)' ] = array(
            array( array( $this, 'get_customer' ),  WC_API_SERVER::READABLE ),
        );

        # GET /customers/<id>/orders
        $routes[ $this->base . '/(?P<id>\d+)/orders' ] = array(
            array( array( $this, 'get_customer_orders' ), WC_API_SERVER::READABLE ),
        );

        return $routes;
    }

    /**
     * Get all customers
     *
     * @since 2.1
     * @param array $fields
     * @param array $filter
     * @param int $page
     * @return array
     */
    public function get_customers( $fields = null, $filter = array(), $page = 1 ) {

        $filter['page'] = $page;

        $query = $this->query_customers( $filter );

        $customers = array();

        foreach ( $query->get_results() as $user_id ) {

            if ( ! $this->is_readable( $user_id ) ) {
                continue;
            }

            $customers[] = current( $this->get_customer( $user_id, $fields ) );
        }

        $this->server->add_pagination_headers( $query );

        return array( 'customers' => $customers );
    }

    /**
     * Get the customer for the given ID
     *
     * @since 2.1
     * @param int $id the customer ID
     * @param string $fields
     * @return array|WP_Error
     */
    public function get_customer( $id, $fields = null ) {
        global $wpdb;

        $id = $this->validate_request( $id, 'customer', 'read' );

        if ( is_wp_error( $id ) ) {
            return $id;
        }

        $customer      = new WC_Customer( $id );
        $last_order    = $customer->get_last_order();
        $customer_data = array(
            'id'               => $customer->get_id(),
            'created_at'       => $this->server->format_datetime( $customer->get_date_created() ? $customer->get_date_created()->getTimestamp() : 0 ), // API gives UTC times.
            'email'            => $customer->get_email(),
            'first_name'       => $customer->get_first_name(),
            'last_name'        => $customer->get_last_name(),
            'username'         => $customer->get_username(),
            'last_order_id'    => is_object( $last_order ) ? $last_order->get_id() : null,
            'last_order_date'  => is_object( $last_order ) ? $this->server->format_datetime( $last_order->get_date_created() ? $last_order->get_date_created()->getTimestamp() : 0 ) : null, // API gives UTC times.
            'orders_count'     => $customer->get_order_count(),
            'total_spent'      => wc_format_decimal( $customer->get_total_spent(), 2 ),
            'avatar_url'       => $customer->get_avatar_url(),
            'billing_address'  => array(
                'first_name' => $customer->get_billing_first_name(),
                'last_name'  => $customer->get_billing_last_name(),
                'company'    => $customer->get_billing_company(),
                'address_1'  => $customer->get_billing_address_1(),
                'address_2'  => $customer->get_billing_address_2(),
                'city'       => $customer->get_billing_city(),
                'state'      => $customer->get_billing_state(),
                'postcode'   => $customer->get_billing_postcode(),
                'country'    => $customer->get_billing_country(),
                'email'      => $customer->get_billing_email(),
                'phone'      => $customer->get_billing_phone(),
            ),
            'shipping_address' => array(
                'first_name' => $customer->get_shipping_first_name(),
                'last_name'  => $customer->get_shipping_last_name(),
                'company'    => $customer->get_shipping_company(),
                'address_1'  => $customer->get_shipping_address_1(),
                'address_2'  => $customer->get_shipping_address_2(),
                'city'       => $customer->get_shipping_city(),
                'state'      => $customer->get_shipping_state(),
                'postcode'   => $customer->get_shipping_postcode(),
                'country'    => $customer->get_shipping_country(),
            ),
        );

        return array( 'customer' => apply_filters( 'woocommerce_api_customer_response', $customer_data, $customer, $fields, $this->server ) );
    }

    /**
     * Get the total number of customers
     *
     * @since 2.1
     * @param array $filter
     * @return array|WP_Error
     */
    public function get_customers_count( $filter = array() ) {

        $query = $this->query_customers( $filter );

        if ( ! current_user_can( 'list_users' ) ) {
            return new WP_Error( 'woocommerce_api_user_cannot_read_customers_count', __( 'You do not have permission to read the customers count', 'woocommerce' ), array( 'status' => 401 ) );
        }

        return array( 'count' => count( $query->get_results() ) );
    }


    /**
     * Create a customer
     *
     * @param array $data
     * @return array|WP_Error
     */
    public function create_customer( $data ) {

        if ( ! current_user_can( 'create_users' ) ) {
            return new WP_Error( 'woocommerce_api_user_cannot_create_customer', __( 'You do not have permission to create this customer', 'woocommerce' ), array( 'status' => 401 ) );
        }

        return array();
    }

    /**
     * Edit a customer
     *
     * @param int $id the customer ID
     * @param array $data
     * @return array|WP_Error
     */
    public function edit_customer( $id, $data ) {

        $id = $this->validate_request( $id, 'customer', 'edit' );

        if ( ! is_wp_error( $id ) ) {
            return $id;
        }

        return $this->get_customer( $id );
    }

    /**
     * Delete a customer
     *
     * @param int $id the customer ID
     * @return array|WP_Error
     */
    public function delete_customer( $id ) {

        $id = $this->validate_request( $id, 'customer', 'delete' );

        if ( ! is_wp_error( $id ) ) {
            return $id;
        }

        return $this->delete( $id, 'customer' );
    }

    /**
     * Get the orders for a customer
     *
     * @since 2.1
     * @param int $id the customer ID
     * @param string $fields fields to include in response
     * @return array|WP_Error
     */
    public function get_customer_orders( $id, $fields = null ) {
        global $wpdb;

        $id = $this->validate_request( $id, 'customer', 'read' );

        if ( is_wp_error( $id ) ) {
            return $id;
        }

        $order_ids = wc_get_orders( array(
            'customer' => $id,
            'limit'    => -1,
            'orderby'  => 'date',
            'order'    => 'ASC',
            'return'   => 'ids',
        ) );

        if ( empty( $order_ids ) ) {
            return array( 'orders' => array() );
        }

        $orders = array();

        foreach ( $order_ids as $order_id ) {
            $orders[] = current( WC()->api->WC_API_Orders->get_order( $order_id, $fields ) );
        }

        return array( 'orders' => apply_filters( 'woocommerce_api_customer_orders_response', $orders, $id, $fields, $order_ids, $this->server ) );
    }

    /**
     * Helper method to get customer user objects
     *
     * Note that WP_User_Query does not have built-in pagination so limit & offset are used to provide limited
     * pagination support
     *
     * @since 2.1
     * @param array $args request arguments for filtering query
     * @return WP_User_Query
     */
    private function query_customers( $args = array() ) {

        // default users per page
        $users_per_page = get_option( 'posts_per_page' );

        // set base query arguments
        $query_args = array(
            'fields'  => 'ID',
            'role'    => 'customer',
            'orderby' => 'registered',
            'number'  => $users_per_page,
        );

        // search
        if ( ! empty( $args['q'] ) ) {
            $query_args['search'] = $args['q'];
        }

        // limit number of users returned
        if ( ! empty( $args['limit'] ) ) {

            $query_args['number'] = absint( $args['limit'] );

            $users_per_page = absint( $args['limit'] );
        }

        // page
        $page = ( isset( $args['page'] ) ) ? absint( $args['page'] ) : 1;

        // offset
        if ( ! empty( $args['offset'] ) ) {
            $query_args['offset'] = absint( $args['offset'] );
        } else {
            $query_args['offset'] = $users_per_page * ( $page - 1 );
        }

        // created date
        if ( ! empty( $args['created_at_min'] ) ) {
            $this->created_at_min = $this->server->parse_datetime( $args['created_at_min'] );
        }

        if ( ! empty( $args['created_at_max'] ) ) {
            $this->created_at_max = $this->server->parse_datetime( $args['created_at_max'] );
        }

        $query = new WP_User_Query( $query_args );

        // helper members for pagination headers
        $query->total_pages = ceil( $query->get_total() / $users_per_page );
        $query->page = $page;

        return $query;
    }

    /**
     * Add customer data to orders
     *
     * @since 2.1
     * @param $order_data
     * @param $order
     * @return array
     */
    public function add_customer_data( $order_data, $order ) {

        if ( 0 == $order->get_user_id() ) {

            // add customer data from order
            $order_data['customer'] = array(
                'id'               => 0,
                'email'            => $order->get_billing_email(),
                'first_name'       => $order->get_billing_first_name(),
                'last_name'        => $order->get_billing_last_name(),
                'billing_address'  => array(
                    'first_name' => $order->get_billing_first_name(),
                    'last_name'  => $order->get_billing_last_name(),
                    'company'    => $order->get_billing_company(),
                    'address_1'  => $order->get_billing_address_1(),
                    'address_2'  => $order->get_billing_address_2(),
                    'city'       => $order->get_billing_city(),
                    'state'      => $order->get_billing_state(),
                    'postcode'   => $order->get_billing_postcode(),
                    'country'    => $order->get_billing_country(),
                    'email'      => $order->get_billing_email(),
                    'phone'      => $order->get_billing_phone(),
                ),
                'shipping_address' => array(
                    'first_name' => $order->get_shipping_first_name(),
                    'last_name'  => $order->get_shipping_last_name(),
                    'company'    => $order->get_shipping_company(),
                    'address_1'  => $order->get_shipping_address_1(),
                    'address_2'  => $order->get_shipping_address_2(),
                    'city'       => $order->get_shipping_city(),
                    'state'      => $order->get_shipping_state(),
                    'postcode'   => $order->get_shipping_postcode(),
                    'country'    => $order->get_shipping_country(),
                ),
            );

        } else {

            $order_data['customer'] = current( $this->get_customer( $order->get_user_id() ) );
        }

        return $order_data;
    }

    /**
     * Modify the WP_User_Query to support filtering on the date the customer was created
     *
     * @since 2.1
     * @param WP_User_Query $query
     */
    public function modify_user_query( $query ) {

        if ( $this->created_at_min ) {
            $query->query_where .= sprintf( " AND user_registered >= STR_TO_DATE( '%s', '%%Y-%%m-%%d %%h:%%i:%%s' )", esc_sql( $this->created_at_min ) );
        }

        if ( $this->created_at_max ) {
            $query->query_where .= sprintf( " AND user_registered <= STR_TO_DATE( '%s', '%%Y-%%m-%%d %%h:%%i:%%s' )", esc_sql( $this->created_at_max ) );
        }
    }

    /**
     * Validate the request by checking:
     *
     * 1) the ID is a valid integer
     * 2) the ID returns a valid WP_User
     * 3) the current user has the proper permissions
     *
     * @since 2.1
     * @see WC_API_Resource::validate_request()
     * @param string|int $id the customer ID
     * @param string $type the request type, unused because this method overrides the parent class
     * @param string $context the context of the request, either `read`, `edit` or `delete`
     * @return int|WP_Error valid user ID or WP_Error if any of the checks fails
     */
    protected function validate_request( $id, $type, $context ) {

        $id = absint( $id );

        // validate ID
        if ( empty( $id ) ) {
            return new WP_Error( 'woocommerce_api_invalid_customer_id', __( 'Invalid customer ID', 'woocommerce' ), array( 'status' => 404 ) );
        }

        // non-existent IDs return a valid WP_User object with the user ID = 0
        $customer = new WP_User( $id );

        if ( 0 === $customer->ID ) {
            return new WP_Error( 'woocommerce_api_invalid_customer', __( 'Invalid customer', 'woocommerce' ), array( 'status' => 404 ) );
        }

        // validate permissions
        switch ( $context ) {

            case 'read':
                if ( ! current_user_can( 'list_users' ) ) {
                    return new WP_Error( 'woocommerce_api_user_cannot_read_customer', __( 'You do not have permission to read this customer', 'woocommerce' ), array( 'status' => 401 ) );
                }
                break;

            case 'edit':
                if ( ! current_user_can( 'edit_users' ) ) {
                    return new WP_Error( 'woocommerce_api_user_cannot_edit_customer', __( 'You do not have permission to edit this customer', 'woocommerce' ), array( 'status' => 401 ) );
                }
                break;

            case 'delete':
                if ( ! current_user_can( 'delete_users' ) ) {
                    return new WP_Error( 'woocommerce_api_user_cannot_delete_customer', __( 'You do not have permission to delete this customer', 'woocommerce' ), array( 'status' => 401 ) );
                }
                break;
        }

        return $id;
    }

    /**
     * Check if the current user can read users
     *
     * @since 2.1
     * @see WC_API_Resource::is_readable()
     * @param int|WP_Post $post unused
     * @return bool true if the current user can read users, false otherwise
     */
    protected function is_readable( $post ) {

        return current_user_can( 'list_users' );
    }
}