Initial commit.

wp-content/plugins/woocommerce-payments/includes/multi-currency/Geolocation.php

@@ -0,0 +1,85 @@
+<?php
+/**
+ * WooCommerce Payments Multi-Currency Geolocation Class
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\MultiCurrency;
+
+use WCPay\MultiCurrency\Interfaces\MultiCurrencyLocalizationInterface;
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Geolocation.
+ */
+class Geolocation {
+	/**
+	 * MultiCurrencyLocalizationInterface instance.
+	 *
+	 * @var MultiCurrencyLocalizationInterface
+	 */
+	protected $localization_service;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param MultiCurrencyLocalizationInterface $localization_service The Localization Service instance.
+	 */
+	public function __construct( MultiCurrencyLocalizationInterface $localization_service ) {
+		$this->localization_service = $localization_service;
+	}
+
+	/**
+	 * Gets the customer's currency based on their location.
+	 *
+	 * @return string|null Currency code or null if not found.
+	 */
+	public function get_currency_by_customer_location() {
+		$country = $this->get_country_by_customer_location();
+
+		return $this->localization_service->get_country_locale_data( $country )['currency_code'] ?? null;
+	}
+
+	/**
+	 * Gets the customer's country based on their location.
+	 *
+	 * @return string Country code.
+	 */
+	public function get_country_by_customer_location() {
+		$country = $this->geolocate_customer();
+
+		if ( $country ) {
+			// Once we have a location, ensure it's valid, otherwise fallback to the default country.
+			$allowed_country_codes = WC()->countries->get_allowed_countries();
+			if ( ! array_key_exists( $country, $allowed_country_codes ) ) {
+				$country = null;
+			}
+		}
+
+		if ( ! $country ) {
+			$default_location = get_option( 'woocommerce_default_country', '' );
+			$location         = wc_format_country_state_string( apply_filters( 'woocommerce_customer_default_location', $default_location ) );
+			$country          = $location['country'];
+		}
+
+		return $country;
+	}
+
+	/**
+	 * Attempts to guess the customer's country based on their IP.
+	 *
+	 * @return string|null Country code, or NULL if it couldn't be determined.
+	 */
+	private function geolocate_customer() {
+		// Exclude common bots from geolocation by user agent.
+		$ua = wc_get_user_agent();
+		if ( stripos( $ua, 'bot' ) !== false || stripos( $ua, 'spider' ) !== false || stripos( $ua, 'crawl' ) !== false ) {
+			return null;
+		}
+
+		$geolocation = \WC_Geolocation::geolocate_ip( '', true, true );
+		return $geolocation['country'] ?? null;
+	}
+}