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Create class.gateway.php
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@maukoese
maukoese authored Jun 13, 2022
1 parent 2fa7b34 commit bbecddc
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<?php

/**
* Selcom Payment Gateway
*
* Provides an Selcom Payment Gateway; mainly for testing purposes.
* We load it later to ensure WC is loaded first since we're extending it.
*
* @class WC_Gateway_Selcom
* @extends WC_Payment_Gateway
* @version 1.0.0
* @package WooCommerce/Classes/Payment
* @author Osen Concepts
*/
class WC_Selcom_Gateway extends WC_Payment_Gateway
{
/**
* Constructor for the gateway.
*
* @return void
*/
public function __construct()
{
$this->id = 'selcom';
$this->icon = apply_filters('woocommerce_selcom_gateway_icon', plugins_url('selcom.png', __FILE__));
$this->has_fields = true;
$this->method_title = __('Selcom Gateway', 'rcpro');
$this->method_description = __('Allows payments through Selcom Gateway.', 'rcpro');
$this->supports = array(
'products',
'refunds',
);

// Load the settings.
$this->init_form_fields();
$this->init_settings();

// Define user set variables.
$this->title = $this->get_option('title');

// Actions.
add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this, 'process_admin_options'));
add_action('woocommerce_thankyou_' . $this->id, array($this, 'thankyou_page'));
add_action('woocommerce_email_before_order_table', array($this, 'email_instructions'), 10, 3);
}

/**
* Initialise Gateway Settings Form Fields.
*
* @return void
*/
public function init_form_fields()
{
$this->form_fields = array(
'enabled' => array(
'title' => __('Enable/Disable', 'rcpro'),
'type' => 'checkbox',
'label' => __('Enable Selcom Gateway', 'rcpro'),
'default' => 'yes',
),
'title' => array(
'title' => __('Title', 'rcpro'),
'type' => 'text',
'description' => __('This controls the title which the user sees during checkout.', 'rcpro'),
'default' => __('Selcom Gateway', 'rcpro'),
'desc_tip' => true,
),
'description' => array(
'title' => __('Description', 'rcpro'),
'type' => 'textarea',
'description' => __('This controls the description which the user sees during checkout.', 'rcpro'),
'default' => __('Pay via Selcom Gateway', 'rcpro'),
'desc_tip' => true,
),
'instructions' => array(
'title' => __('Instructions', 'rcpro'),
'type' => 'textarea',
'description' => __('Instructions that will be added to the thank you page.', 'rcpro'),
'default' => __('Pay via Selcom Gateway', 'rcpro'),
'desc_tip' => true,
),
'merchant' => array(
'title' => __('Merchant ID', 'rcpro'),
'type' => 'text',
'description' => __('Merchant ID provided by Selcom.', 'rcpro'),
'default' => '',
'desc_tip' => true,
),
'api_key' => array(
'title' => __('API Key', 'rcpro'),
'type' => 'text',
'description' => __('This is the API Key provided by Selcom.', 'rcpro'),
'default' => '',
'desc_tip' => true,
),
'api_secret' => array(
'title' => __('API Secret', 'rcpro'),
'type' => 'text',
'description' => __('This is the API Secret provided by Selcom.', 'rcpro'),
'default' => '',
'desc_tip' => true,
),
'api_url' => array(
'title' => __('API URL', 'rcpro'),
'type' => 'text',
'description' => __('This is the API URL provided by Selcom.', 'rcpro'),
'default' => '',
'desc_tip' => true,
),
);
}

public function payment_fields()
{
$description = $this->get_description();
if ($description) {
echo wpautop(wptexturize($description));
}

woocommerce_form_field(
'phone',
array(
'type' => 'text',
'class' => array('form-row-wide'),
'label' => __('Phone', 'rcpro'),
'placeholder' => __('Phone', 'rcpro'),
'required' => true,
)
);
}

public function sendJSONPost($json, $authorization, $digest, $signed_fields, $timestamp)
{
$url = "{$this->settings['api_ur;']}/utilitypayment/process";
$headers = array(
"Content-type" => 'application/json;charset="utf-8"',
"Accept" => "application/json",
"Cache-Control:" => " no-cache",
"Authorization" => "SELCOM $authorization",
"Digest-Method" => "HS256",
"Digest" => $digest,
"Timestamp" => $timestamp,
"Signed-Fields" => $signed_fields,
);

$result = wp_remote_post($url, array(
'method' => 'POST',
'timeout' => 45,
'redirection' => 5,
'httpversion' => '1.0',
'blocking' => true,
'headers' => $headers,
'body' => $json,
'cookies' => array(),
));

return is_wp_error($result)
? array('result' => 'FAIL', 'message' => $result->get_error_message())
: json_decode($result['body'], true);
}

public function computeSignature($parameters, $signed_fields, $request_timestamp, $api_secret)
{
$fields_order = explode(',', $signed_fields);
$sign_data = "timestamp=$request_timestamp";
foreach ($fields_order as $key) {
$sign_data .= "&$key=" . $parameters[$key];
}

//RS256 Signature Method
#$private_key_pem = openssl_get_privatekey(file_get_contents("path_to_private_key_file"));
#openssl_sign($sign_data, $signature, $private_key_pem, OPENSSL_ALGO_SHA256);
#return base64_encode($signature);

//HS256 Signature Method
return base64_encode(hash_hmac('sha256', $sign_data, $api_secret, true));
}

/**
* Process the payment and return the result.
*
* @param int $order_id
* @return array
*/
public function process_payment($order_id)
{
$order = wc_get_order($order_id);
$authorization = base64_encode($this->settings['api_key']);
$timestamp = date('c');
$req = array(
"utilityref" => $order_id,
"transid" => $order->get_order_key(),
"amount" => round($order->get_total()),
);

$signed_fields = implode(',', array_keys($req));
$digest = $this->computeSignature($req, $signed_fields, $timestamp, $this->settings['api_secret']);
$response = $this->sendJSONPost(wp_json_encode($req), $authorization, $digest, $signed_fields, $timestamp);

// Mark as on-hold (we're awaiting the payment)
$order->update_status('on-hold', __('Awaiting payment', 'rcpro'));

// Reduce stock levels
$order->reduce_order_stock();

// Remove cart
WC()->cart->empty_cart();

// Return thankyou redirect
return array(
'result' => 'success',
'redirect' => $this->get_return_url($order),
);
}

/**
* Output for the order received page.
*/
public function thankyou_page()
{
if ($this->instructions) {
echo wpautop(wptexturize($this->instructions));
}
}

/**
* Add content to the WC emails.
*
* @access public
* @param WC_Order $order
* @param bool $sent_to_admin
* @param bool $plain_text
*/
public function email_instructions($order, $sent_to_admin, $plain_text = false)
{

if ($this->instructions && !$sent_to_admin && 'Selcom' === $order->payment_method && $order->has_status('on-hold')) {
echo wpautop(wptexturize($this->instructions)) . PHP_EOL;
}
}
}

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