Woocommerce Custom Payment Gateway IPN not working - wordpress

Question

I am developing a payment gateway on WordPress Plugins. I'm having a callback problem between Java Backend and WordPress Plugins. Java Backend wants to send order updates to WordPress Plugins. I have 2 options:
Option 1: I use the callback function (follow instructions https://woocommerce.com/document/payment-gateway-api/#section-2)
Here is the code I integrated
<?php
/**
* Plugin Name: H Payments
* Plugin URI:
* Author Name: H Team
* Author URI:
* Description:
* Version: 0.1.0
* License: 0.1.0
* License URL:
* text-domain: woocommerce-h-pay-woo
*/
if ( ! in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
return;
}
add_action( 'plugins_loaded', 'payment_init' );
function payment_init() {
if ( class_exists( 'WC_Payment_Gateway' ) ) {
class WC_H_Payment_Gateway extends WC_Payment_Gateway {
function __construct() {
$this->code = 'WC_H_Payment_Gateway';
$this->path = 'hpay/v1';
$this->id = 'h_payment';
$this->icon = apply_filters( 'woocommerce_h_icon', plugins_url( '/assets/icon/icon.png', __FILE__ ) );
$this->has_fields = true;
$this->method_title = __( 'H Payment', 'woocommerce-h-pay-woo' );
$this->method_description = __( 'H Payment Systems', 'woocommerce-h-pay-woo' );
$this->title = $this->get_option( 'title' );
$this->description = $this->get_option( 'description' );
$this->init_form_fields();
$this->init_settings();
add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array(
$this,
'process_admin_options'
) );
add_action( 'woocommerce_api_wc_h_payment_gateway', array( $this, 'check_h_payment_response' ) );
}
public function init_rest_api_callback() {
register_rest_route( 'hpay/v1', '/callback', [
'methods' => 'GET',
'callback' => [ $this, 'check_h_payment_response' ],
] );
}
public function init_form_fields() {
$this->form_fields = apply_filters( 'h_payment_fields', array(
'enable' => array(
'title' => __( 'Enable/Disable', 'woocommerce-h-pay-woo' ),
'type' => 'checkbox',
'label' => __( 'Enable or Disable H Payment', 'woocommerce-h-pay-woo' ),
'default' => true
),
'title' => array(
'title' => __( 'H Payments Gateway', 'woocommerce-h-pay-woo' ),
'type' => 'text',
'default' => __( 'H Payments Gateway', 'woocommerce-h-pay-woo' ),
'desc_tip' => true,
'description' => __( 'Add a new title for the H Payments Gateway that customers will see when they are in the checkout page.', 'noob-pay-woo' )
),
'description' => array(
'title' => __( 'H Pay Description', 'woocommerce-h-pay-woo' ),
'type' => 'textarea',
'default' => __( 'By using H Payment you agree to our terms of service and privacy statement', 'woocommerce-h-pay-woo' ),
'description' => __( 'Simple description', 'woocommerce-h-pay-woo' ),
'desc_tip' => true
),
) );
}
public function process_payment( $order_id ) {
$order = wc_get_order( $order_id );
$order->update_status( 'on-hold', __( 'Awaiting Payment', 'woocommerce-h-pay-woo') );
$order->reduce_order_stock();
WC()->cart->empty_cart();
return array(
'result' => 'success',
'redirect' => $this->get_return_url( $order ),
);
}
public function check_h_payment_response() {
// do sth
if ( isset( $_GET['h_transaction_uuid'] ) ) {
return "SUCCESS";
} else {
return "ERROR";
}
}
}
}
}
add_filter( 'woocommerce_payment_gateways', 'add_to_h_payment_gateway' );
function add_to_h_payment_gateway( $gateways ) {
$gateways[] = 'WC_H_Payment_Gateway';
return $gateways;
}
Then I call through the URL http://localhost/mystore/wc-api/wc_h_payment_gateway?h_transaction_uuid=1234 but the result is -1 (https://i.stack.imgur.com/FhSry.png)
Option 2: I register a rest api using register_rest_route: (https://i.stack.imgur.com/jle1Z.png)
Here is the code I integrated
<?php
/**
* Plugin Name: H Payments
* Plugin URI:
* Author Name: H Team
* Author URI:
* Description:
* Version: 0.1.0
* License: 0.1.0
* License URL:
* text-domain: woocommerce-h-pay-woo
*/
if ( ! in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
return;
}
add_action( 'plugins_loaded', 'payment_init' );
function payment_init() {
if ( class_exists( 'WC_Payment_Gateway' ) ) {
class WC_H_Payment_Gateway extends WC_Payment_Gateway {
function __construct() {
$this->code = 'WC_H_Payment_Gateway';
$this->path = 'hpay/v1';
$this->id = 'h_payment';
$this->icon = apply_filters( 'woocommerce_h_icon', plugins_url( '/assets/icon/icon.png', __FILE__ ) );
$this->has_fields = true;
$this->method_title = __( 'H Payment', 'woocommerce-h-pay-woo' );
$this->method_description = __( 'H Payment Systems', 'woocommerce-h-pay-woo' );
$this->title = $this->get_option( 'title' );
$this->description = $this->get_option( 'description' );
$this->init_form_fields();
$this->init_settings();
add_action( 'woocommerce_update_options_payment_gateways_' . $this->id, array(
$this,
'process_admin_options'
) );
add_action( 'rest_api_init_custom', array( $this, 'init_rest_api_callback' ) );
do_action( 'rest_api_init_custom' );
}
public function init_rest_api_callback() {
register_rest_route( 'hpay/v1', '/callback', [
'methods' => 'GET',
'callback' => [ $this, 'check_h_payment_response' ],
] );
}
public function init_form_fields() {
$this->form_fields = apply_filters( 'h_payment_fields', array(
'enable' => array(
'title' => __( 'Enable/Disable', 'woocommerce-h-pay-woo' ),
'type' => 'checkbox',
'label' => __( 'Enable or Disable H Payment', 'woocommerce-h-pay-woo' ),
'default' => true
),
'title' => array(
'title' => __( 'H Payments Gateway', 'woocommerce-h-pay-woo' ),
'type' => 'text',
'default' => __( 'H Payments Gateway', 'woocommerce-h-pay-woo' ),
'desc_tip' => true,
'description' => __( 'Add a new title for the H Payments Gateway that customers will see when they are in the checkout page.', 'noob-pay-woo' )
),
'description' => array(
'title' => __( 'H Pay Description', 'woocommerce-h-pay-woo' ),
'type' => 'textarea',
'default' => __( 'By using H Payment you agree to our terms of service and privacy statement', 'woocommerce-h-pay-woo' ),
'description' => __( 'Simple description', 'woocommerce-h-pay-woo' ),
'desc_tip' => true
),
) );
}
public function process_payment( $order_id ) {
$order = wc_get_order( $order_id );
$order->update_status( 'on-hold', __( 'Awaiting Payment', 'woocommerce-h-pay-woo') );
$order->reduce_order_stock();
WC()->cart->empty_cart();
return array(
'result' => 'success',
'redirect' => $this->get_return_url( $order ),
);
}
public function check_h_payment_response() {
// do sth
if ( isset( $_GET['h_transaction_uuid'] ) ) {
return "SUCCESS";
} else {
return "ERROR";
}
}
}
}
}
add_filter( 'woocommerce_payment_gateways', 'add_to_h_payment_gateway' );
function add_to_h_payment_gateway( $gateways ) {
$gateways[] = 'WC_H_Payment_Gateway';
return $gateways;
}
Rest API is registered but when I click checkout I get the error "Internal Server Error"
[15-May-2022 15:44:30 UTC] PHP Fatal error: Uncaught Error: Call to a member function get_payment_gateway_ids() on null in C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\Schemas\V1\CheckoutSchema.php:115
Stack trace:
#0 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\Schemas\V1\AbstractSchema.php(62): Automattic\WooCommerce\StoreApi\Schemas\V1\CheckoutSchema->get_properties()
#1 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\Routes\V1\AbstractRoute.php(85): Automattic\WooCommerce\StoreApi\Schemas\V1\AbstractSchema->get_item_schema()
#2 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\Routes\V1\AbstractRoute.php(263): Automattic\WooCommerce\StoreApi\Routes\V1\AbstractRoute->get_item_schema()
#3 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\Routes\V1\Checkout.php(70): Automattic\WooCommerce\StoreApi\Routes\V1\AbstractRoute->get_context_param(Array)
#4 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\RoutesController.php(113): Automattic\WooCommerce\StoreApi\Routes\V1\Checkout->get_args()
#5 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\RoutesController.php(68): Automattic\WooCommerce\StoreApi\RoutesController->register_routes('v1', 'wc/store')
#6 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\packages\woocommerce-blocks\src\StoreApi\StoreApi.php(26): Automattic\WooCommerce\StoreApi\RoutesController->register_all_routes()
#7 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(307): Automattic\WooCommerce\StoreApi\StoreApi->Automattic\WooCommerce\StoreApi\{closure}(Object(WP_REST_Server))
#8 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#9 C:\xampp\htdocs\hodlerext\wp-includes\plugin.php(474): WP_Hook->do_action(Array)
#10 C:\xampp\htdocs\hodlerext\wp-includes\rest-api.php(553): do_action('rest_api_init', Object(WP_REST_Server))
#11 C:\xampp\htdocs\hodlerext\wp-includes\rest-api.php(109): rest_get_server()
#12 C:\xampp\htdocs\hodlerext\wp-content\plugins\test-plugin\test-plugin.php(49): register_rest_route('hpay/v1', '/callback', Array)
#13 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(307): WC_H_Payment_Gateway->init_rest_api_callback('')
#14 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#15 C:\xampp\htdocs\hodlerext\wp-includes\plugin.php(474): WP_Hook->do_action(Array)
#16 C:\xampp\htdocs\hodlerext\wp-content\plugins\test-plugin\test-plugin.php(43): do_action('rest_api_init_c...')
#17 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-payment-gateways.php(97): WC_H_Payment_Gateway->__construct()
#18 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-payment-gateways.php(70): WC_Payment_Gateways->init()
#19 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-payment-gateways.php(43): WC_Payment_Gateways->__construct()
#20 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-woocommerce.php(890): WC_Payment_Gateways::instance()
#21 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-woocommerce.php(163): WooCommerce->payment_gateways()
#22 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-checkout.php(880): WooCommerce->__get('payment_gateway...')
#23 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-checkout.php(1172): WC_Checkout->validate_checkout(Array, Object(WP_Error))
#24 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-ajax.php(461): WC_Checkout->process_checkout()
#25 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(307): WC_AJAX::checkout('')
#26 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#27 C:\xampp\htdocs\hodlerext\wp-includes\plugin.php(474): WP_Hook->do_action(Array)
#28 C:\xampp\htdocs\hodlerext\wp-content\plugins\woocommerce\includes\class-wc-ajax.php(90): do_action('wc_ajax_checkou...')
#29 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(307): WC_AJAX::do_wc_ajax('')
#30 C:\xampp\htdocs\hodlerext\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters(false, Array)
#31 C:\xampp\htdocs\hodlerext\wp-includes\plugin.php(474): WP_Hook->do_action(Array)
#32 C:\xampp\htdocs\hodlerext\wp-includes\template-loader.php(13): do_action('template_redire...')
#33 C:\xampp\htdocs\hodlerext\wp-blog-header.php(19): require_once('C:\\xampp\\htdocs...')
#34 C:\xampp\htdocs\hodlerext\index.php(17): require('C:\\xampp\\htdocs...')
#35 {main}
What I am doing wrong?
I am new to PHP Woocommerce any help will be appreciated.
Thanks in advance

Answer 1

I chose method 1, I was wrong in naming the callback function
Create an id in __contruct:
$this->id = 'h_payment';
Add a callback action:
add_action( 'woocommerce_api_' . $this->id, array( $this, 'check_h_payment_response' ) );
Create function for handler callback:
public function check_h_payment_response() {//todo}
And the URL will be
home_url() . '/wc-api/' . $this->id
It seems that the result when calling postman will always be -1 however everything still works