Prepare the Subscription Map Helper

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

@@ -0,0 +1,70 @@
+<?php
+/**
+ * A helper for mapping the old/new subscription settings.
+ *
+ * @package WooCommerce\PayPalCommerce\Compat\Settings
+ */
+
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Compat\Settings;
+
+use WooCommerce\PayPalCommerce\Settings\DTO\LocationStylingDTO;
+use WooCommerce\PayPalCommerce\WcSubscriptions\Helper\SubscriptionHelper;
+
+/**
+ * A map of old to new styling settings.
+ *
+ * In new settings UI we have to automatically set Subscriptions mode value based on the type of merchant.
+ * So here we will fake the map and later inject the value of the old subscription setting value based on the type of merchant.
+ * - Non-vaulting merchants should have it set to PayPal Subscriptions
+ * - Merchants with vaulting should have it set to PayPal Vaulting
+ *
+ * @psalm-import-type newSettingsKey from SettingsMap
+ * @psalm-import-type oldSettingsKey from SettingsMap
+ */
+class SubscriptionSettingsMapHelper {
+
+	/**
+	 * The subscription helper.
+	 *
+	 * @var SubscriptionHelper $subscription_helper
+	 */
+	protected SubscriptionHelper $subscription_helper;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param SubscriptionHelper $subscription_helper The subscription helper.
+	 */
+	public function __construct( SubscriptionHelper $subscription_helper ) {
+		$this->subscription_helper = $subscription_helper;
+	}
+
+	/**
+	 * Maps the old subscription setting key.
+	 *
+	 * We just need to fake the map here as this setting doesn't exist it new settings.
+	 * We will automatically set Subscriptions mode value based on the type of merchant.
+	 *
+	 * @psalm-return array<oldSettingsKey, newSettingsKey>
+	 */
+	public function map(): array {
+		return array( 'subscriptions_mode' => '' );
+	}
+
+	/**
+	 * Retrieves the value of a mapped key from the new settings.
+	 *
+	 * @param string               $old_key The key from the legacy settings.
+	 * @param LocationStylingDTO[] $styling_models The list of location styling models.
+	 *
+	 * @return mixed The value of the mapped setting, (null if not found).
+	 */
+	public function mapped_value( string $old_key, array $styling_models ) {
+		if ( $old_key !== 'subscriptions_mode' || ! $this->subscription_helper->plugin_is_active() ) {
+			return null;
+		}
+
+	}
+}