wikimedia/mediawiki-extensions-DonationInterface

<?php

class PaymentSettings extends UnlistedSpecialPage {
    public function __construct() {
        parent::__construct( 'PaymentSettings' );
    }

    public function execute( $par ) {
        $this->getOutput()->setPageTitle( 'Payment Settings' );

        // this config comes from the config in extension.json
        //$config = $this->getConfig()->get( 'DonationInterfaceGatewayPriorityRules' );
        $processors = [ 'adyen', 'dlocal' ];

        foreach ( $processors as $processor ) {
            $this->getOutput()->addHTML( '<h1>' . $processor . '</h1>' );
            $configurationReader = ConfigurationReader::createForGateway(
                $processor, null, WmfFramework::getConfig()
            );
            $config = $configurationReader->readConfiguration();
            $this->getOutput()->addHTML( 'Enabled payment methods by country' );
            foreach ( $config['payment_submethods'] as $name => $submethod ) {
                $this->getOutput()->addHTML( '<h2>' . $name . '</h2>' );
                $this->getOutput()->addHTML( '<table>' );
                if ( isset( $submethod['countries'] ) ) {
                    foreach ( $submethod['countries'] as $countrycode => $enabled ) {
                        $this->getOutput()->addHTML( '<tr>' );
                        $this->getOutput()->addHTML( '<td>' . $countrycode . '</td>' );
                        // can we easily display the full name
                        $fullname = Locale::getDisplayRegion( '-' . $countrycode, 'en' );
                        $this->getOutput()->addHTML( '<td>' . $fullname . '</td>' );
                        $this->getOutput()->addHTML( '</tr>' );
                    }
                }
                $this->getOutput()->addHTML( '</table>' );
            }
        }

        // Monthly convert enabled countries
        $monthlyConvert = $this->getConfig()->get( 'DonationInterfaceMonthlyConvertCountries' );
        $this->getOutput()->addHTML( '<h1>Monthly Convert Countries</h1>' );
        $this->getOutput()->addHTML( '<table>' );
        foreach ( $monthlyConvert as $countryCode ) {
            $this->getOutput()->addHTML( '<tr>' );
            $this->getOutput()->addHTML( '<td>' . $countryCode . '</td>' );
            $fullname = Locale::getDisplayRegion( '-' . $countryCode, 'en' );
            $this->getOutput()->addHTML( '<td>' . $fullname . '</td>' );
            $this->getOutput()->addHTML( '</tr>' );
        }
        $this->getOutput()->addHTML( '</table>' );
    }
}