BTCPay_GF_BTC_LNURL.php

<?php
use BTCPayServer\WC\Gateway\AbstractGateway;
			                class BTCPay_GF_BTC_LNURL extends AbstractGateway {
			                    public function __construct() {
				                  $this->id = 'btcpaygf_btc_lnurl';
				                  parent::__construct();
				                  $this->method_title = 'BTCPay Gateway: BTC_LNURL';
				                  $this->method_description = 'This is separate payment gateway managed by BTCPay.';
				                  $this->tokenType = $this->getTokenType();
				                  $this->primaryPaymentMethod = 'BTC_LNURL';
			                    }

								public function getPaymentMethods(): array {
									return ['BTC_LNURL']; // todo: add feature to add other pm
		                        }

		                        public function getTitle(): string {
									return $this->get_option('title', 'BTC_LNURL');
								}

								public function init_form_fields() {
									parent::init_form_fields();
									$this->form_fields += [
										'token_type' => [
											'title' => __( 'Token type', 'btcpay-greenfield-for-woocommerce' ),
											'type' => 'select',
											'options' => [
												'payment' => 'Payment',
												'promotion' => 'Promotion'
											],
											'default' => 'payment',
											'description' => __( 'Tokens of type promotion will not have a FIAT (USD, EUR, ..) exchange rate but counted as 1 per item quantity. See <a target="_blank" href="https://docs.btcpayserver.org/FAQ/Integrations/#token-types">here</a> for more details.', 'btcpay-greenfield-for-woocommerce' ),
											'desc_tip' => false,
										],
									];
								}
							}