Create a helper for mapping the payment methods

modules/ppcp-compat/src/Settings/PaymentMethodSettingsMapHelper.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * A helper for mapping the old/new payment method settings.
+ *
+ * @package WooCommerce\PayPalCommerce\Compat\Settings
+ */
+
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Compat\Settings;
+
+use WooCommerce\PayPalCommerce\Settings\Data\PaymentSettings;
+
+/**
+ * A map of old to new payment method settings.
+ *
+ * @psalm-import-type newSettingsKey from SettingsMap
+ * @psalm-import-type oldSettingsKey from SettingsMap
+ */
+class PaymentMethodSettingsMapHelper {
+
+	/**
+	 * Maps old setting keys to new payment method settings names.
+	 *
+	 * @psalm-return array<oldSettingsKey, newSettingsKey>
+	 */
+	public function map(): array {
+		return array(
+			'dcc_enabled' => 'acdc',
+			'axo_enabled' => 'axo',
+		);
+	}
+
+	/**
+	 * Retrieves the value of a mapped key from the new settings.
+	 *
+	 * @param string          $old_key The key from the legacy settings.
+	 * @param PaymentSettings $payment_settings The payment settings model.
+	 *
+	 * @return mixed The value of the mapped setting, (null if not found).
+	 */
+	public function mapped_value( string $old_key, PaymentSettings $payment_settings ): ?bool {
+
+		$payment_method = $this->map()[ $old_key ] ?? false;
+
+		if ( ! $payment_method ) {
+			return null;
+		}
+
+		return $payment_settings->is_method_enabled( $payment_method );
+	}
+}