first commit

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/composer.json

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+{
+    "name": "wpdesk\/wc-currency-switchers-integrations",
+    "authors": [
+        {
+            "name": "Grzegorz",
+            "email": "grola@wpdesk.pl"
+        }
+    ],
+    "license": "MIT",
+    "require": {
+        "php": ">=7.0",
+        "psr\/container": "^1.0",
+        "wpdesk\/wp-builder": "^2.0",
+        "psr\/log": "^1.1"
+    },
+    "require-dev": {
+        "phpunit\/phpunit": "^5",
+        "wp-coding-standards\/wpcs": "^0.14.1",
+        "squizlabs\/php_codesniffer": "^3.0.2",
+        "wimg\/php-compatibility": "^8",
+        "mockery\/mockery": "*",
+        "10up\/wp_mock": "*"
+    },
+    "autoload": {
+        "psr-4": {
+            "FSVendor\\WPDesk\\WooCommerce\\CurrencySwitchers\\": "src\/"
+        }
+    },
+    "autoload-dev": {},
+    "scripts": {
+        "phpunit-unit": "phpunit --configuration phpunit-unit.xml --coverage-text --colors=never",
+        "phpunit-unit-fast": "phpunit --configuration phpunit-unit.xml --no-coverage",
+        "phpunit-integration": "phpunit --configuration phpunit-integration.xml --coverage-text --colors=never",
+        "phpunit-integration-fast": "phpunit --configuration phpunit-integration.xml --no-coverage"
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/AbstractConverter.php

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+<?php
+
+/**
+ * Abstract converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers;
+
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerAwareTrait;
+/**
+ * Abstract class for converters.
+ */
+abstract class AbstractConverter implements \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\SwitcherConverter, \Psr\Log\LoggerAwareInterface
+{
+    use LoggerAwareTrait;
+    /**
+     * @inheritDoc
+     */
+    abstract function convert($value);
+    /**
+     * @inheritDoc
+     */
+    public function convert_array($values)
+    {
+        foreach ($values as $key => $value) {
+            if ($value) {
+                $values[$key] = $this->convert($value);
+            }
+        }
+        return $values;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/FilterConverter.php

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+<?php
+
+/**
+ * Filter converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers;
+
+use Psr\Log\LoggerInterface;
+use FSVendor\WPDesk\PluginBuilder\Plugin\Hookable;
+/**
+ * Can add filter to convert currency.
+ */
+class FilterConverter implements \FSVendor\WPDesk\PluginBuilder\Plugin\Hookable
+{
+    /**
+     * @var AbstractConverter
+     */
+    private $converter;
+    /**
+     * @var string
+     */
+    private $shipping_method_id;
+    /**
+     * @param SwitcherConverter $converter
+     * @param string $shipping_method_id
+     */
+    public function __construct(\FSVendor\WPDesk\WooCommerce\CurrencySwitchers\SwitcherConverter $converter, $shipping_method_id)
+    {
+        $this->converter = $converter;
+        $this->shipping_method_id = $shipping_method_id;
+    }
+    public function hooks()
+    {
+        \add_filter($this->shipping_method_id . '/currency-switchers/amount', [$this, 'convert'], 10, 2);
+    }
+    /**
+     * @param float $amount_in_shop_currency
+     * @param LoggerInterface $logger
+     *
+     * @return float
+     */
+    public function convert($amount_in_shop_currency, $logger = null)
+    {
+        if ($logger instanceof \Psr\Log\LoggerInterface) {
+            $this->converter->setLogger($logger);
+        }
+        return $this->converter->convert($amount_in_shop_currency);
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/FilterConvertersFactory.php

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+<?php
+
+/**
+ * Filter converters.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers;
+
+use FSVendor\WPDesk\PluginBuilder\Plugin\Hookable;
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher;
+/**
+ * Can create filter converters.
+ */
+class FilterConvertersFactory implements \FSVendor\WPDesk\PluginBuilder\Plugin\Hookable
+{
+    const PRIORITY_AFTER_DEFAULT = 100;
+    /**
+     * @var string
+     */
+    private $shipping_method_id;
+    /**
+     * @param string $shipping_method_id .
+     */
+    public function __construct($shipping_method_id)
+    {
+        $this->shipping_method_id = $shipping_method_id;
+    }
+    /**
+     * Hooks.
+     */
+    public function hooks()
+    {
+        \add_action('woocommerce_multicurrency_loaded', array($this, 'create_woocommerce_multicurrency_filter_converter'));
+        \add_action('woocommerce_init', [$this, 'create_currency_switcher_woocommerce_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+        \add_action('woocommerce_init', [$this, 'create_wcml_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+        \add_action('woocommerce_init', [$this, 'create_aelia_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+        \add_action('woocommerce_init', [$this, 'create_fox_currency_switcher_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+        \add_action('woocommerce_init', [$this, 'create_wmcs_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+        \add_action('woocommerce_init', [$this, 'create_curcy_filter_converter'], self::PRIORITY_AFTER_DEFAULT);
+    }
+    public function create_woocommerce_multicurrency_filter_converter()
+    {
+        (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency\Converter(), $this->shipping_method_id))->hooks();
+    }
+    public function create_currency_switcher_woocommerce_filter_converter()
+    {
+        $alg_get_current_currency_code = 'alg_get_current_currency_code';
+        // php scoper faker.
+        $alg_wc_cs_get_currency_exchange_rate = 'alg_wc_cs_get_currency_exchange_rate';
+        // php scoper faker.
+        if (\function_exists($alg_get_current_currency_code) && \function_exists($alg_wc_cs_get_currency_exchange_rate)) {
+            (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CurrencySwitcherWoocommerce\Converter(), $this->shipping_method_id))->hooks();
+        }
+    }
+    public function create_wcml_filter_converter()
+    {
+        (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WCML\Converter(), $this->shipping_method_id))->hooks();
+    }
+    public function create_aelia_filter_converter()
+    {
+        $class = 'Aelia' . '\\WC\\CurrencySwitcher\\WC_Aelia_CurrencySwitcher';
+        // php scoper faker
+        if (\class_exists($class)) {
+            (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\Aelia\Converter(), $this->shipping_method_id))->hooks();
+        }
+    }
+    public function create_fox_currency_switcher_filter_converter()
+    {
+        if (isset($GLOBALS['WOOCS'])) {
+            (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\FoxCurrencySwitcher\Converter(), $this->shipping_method_id))->hooks();
+        }
+    }
+    public function create_wmcs_filter_converter()
+    {
+        $wmcs_convert_price = 'wmcs_convert_price';
+        // php scoper faker.
+        if (\function_exists($wmcs_convert_price)) {
+            (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WMCS\Converter(), $this->shipping_method_id))->hooks();
+        }
+    }
+    public function create_curcy_filter_converter()
+    {
+        $wmc_get_price = 'wmc_get_price';
+        // php scoper faker.
+        if (\function_exists($wmc_get_price)) {
+            (new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\FilterConverter(new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CURCY\Converter(), $this->shipping_method_id))->hooks();
+        }
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/ShippingIntegrations.php

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+<?php
+
+/**
+ * Shipping integrations.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers;
+
+use FSVendor\WPDesk\PluginBuilder\Plugin\Hookable;
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency\ShippingMethodIntegration;
+/**
+ * Can create integrations for shipping methods.
+ * Creates integrations for plugins which do not works by default, ie. WooCommerce MultiCurrency.
+ * @see https://woocommerce.com/products/multi-currency/
+ */
+class ShippingIntegrations implements \FSVendor\WPDesk\PluginBuilder\Plugin\Hookable
+{
+    /**
+     * @var string
+     */
+    private $shipping_method_id;
+    /**
+     * @param string $shipping_method_id .
+     */
+    public function __construct($shipping_method_id)
+    {
+        $this->shipping_method_id = $shipping_method_id;
+    }
+    /**
+     * Hooks.
+     */
+    public function hooks()
+    {
+        \add_action('woocommerce_loaded', array($this, 'add_integrations_for_shipping_method'));
+    }
+    /**
+     * Add integration to WooCommerce MultiCurrency for shipping method.
+     */
+    public function add_integrations_for_shipping_method()
+    {
+        $woocommerce_multicurrency_integration = new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency\ShippingMethodIntegration($this->shipping_method_id);
+        $woocommerce_multicurrency_integration->hooks();
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/Aelia/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\Aelia
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\Aelia;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using Aelia  Currency Switcher plugin.
+ * @see https://aelia.co/shop/currency-switcher-woocommerce/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            $class = 'Aelia' . '\\WC\\CurrencySwitcher\\WC_Aelia_CurrencySwitcher';
+            // php scoper faker
+            $aelia = $class::instance();
+            $aelia_settings = $class::settings();
+            $from_currency = $aelia_settings->base_currency();
+            $to_currency = $aelia->get_selected_currency();
+            return $aelia->convert($value, $from_currency, $to_currency);
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/CURCY/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\CURCY
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CURCY;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using CURCY – Multi Currency for WooCommerce plugin.
+ * @see https://wordpress.org/plugins/woo-multi-currency/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            return wmc_get_price($value);
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/CurrencySwitcherWoocommerce/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\CurrencySwitcherWoocommerce
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CurrencySwitcherWoocommerce;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using Currency Switcher for WooCommerce plugin.
+ * @see https://wordpress.org/plugins/currency-switcher-woocommerce/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            $currency_exchange_rate = alg_wc_cs_get_currency_exchange_rate(alg_get_current_currency_code());
+            return $value * $currency_exchange_rate;
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/FoxCurrencySwitcher/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\FoxCurrencySwitcher
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\FoxCurrencySwitcher;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+use function FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CurrencySwitcherWoocommerce\alg_get_current_currency_code;
+use function FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\CurrencySwitcherWoocommerce\alg_wc_cs_get_currency_exchange_rate;
+/**
+ * Can convert currency using FOX – Currency Switcher Professional for WooCommerce plugin.
+ * @see https://wordpress.org/plugins/woocommerce-currency-switcher/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            return $GLOBALS['WOOCS'] ? $GLOBALS['WOOCS']->woocs_exchange_value($value) : $value;
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/WCML/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\WCML
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WCML;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using Currency Switcher for WooCommerce plugin.
+ * @see https://wordpress.org/plugins/woocommerce-multilingual/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            return \apply_filters('wcml_raw_price_amount', $value);
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/WMCS/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\WMCS
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WMCS;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using WMCS plugin.
+ * Unknown plugin URL. This is legacy from Flexible Shipping
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            return wmcs_convert_price($value);
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/WooCommerceMultiCurrency/Converter.php

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+<?php
+
+/**
+ * Currency converter.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency;
+
+use FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter;
+/**
+ * Can convert currency using WooCommerce MultiCurrency plugin.
+ * @see https://woocommerce.com/products/multi-currency/
+ */
+class Converter extends \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\AbstractConverter
+{
+    /**
+     * @inheritDoc
+     */
+    public function convert($value)
+    {
+        try {
+            $rate_storage = new \WOOMC\Rate\Storage();
+            $price_rounder = new \WOOMC\Price\Rounder();
+            $currency_detector = new \WOOMC\Currency\Detector();
+            $price_calculator = new \WOOMC\Price\Calculator($rate_storage, $price_rounder);
+            $price_controller = new \WOOMC\Price\Controller($price_calculator, $currency_detector);
+            return $price_controller->convert($value);
+        } catch (\Throwable $e) {
+            if ($this->logger) {
+                $this->logger->debug($e->getMessage());
+            }
+        }
+        return $value;
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/WooCommerceMultiCurrency/ShippingMethodController.php

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+<?php
+
+/**
+ * Shipping method controler.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency;
+
+use FSVendor\WP_Mock\Hook;
+use FSVendor\WPDesk\PluginBuilder\Plugin\Hookable;
+/**
+ * Converts shipping costs and taxes from shop currency to current currency.
+ */
+class ShippingMethodController implements \FSVendor\WPDesk\PluginBuilder\Plugin\Hookable
+{
+    /**
+     * @var string
+     */
+    private $shipping_method_id;
+    /**
+     *
+     * @var Converter
+     */
+    protected $converter;
+    /**
+     * @param string    $shipping_method_id .
+     * @param Converter $converter .
+     */
+    public function __construct($shipping_method_id, $converter)
+    {
+        $this->shipping_method_id = $shipping_method_id;
+        $this->converter = $converter;
+    }
+    /**
+     * Hooks.
+     */
+    public function hooks()
+    {
+        \add_filter('woocommerce_shipping_rate_cost', array($this, 'convert_shipping_rate_costs_for_shipping_method'), 10, 2);
+        \add_filter('woocommerce_shipping_rate_taxes', array($this, 'convert_shipping_rate_taxes_for_shipping_method'), 10, 2);
+    }
+    /**
+     * Filter the rate cost.
+     *
+     * @param float|int|string  $cost                 The shipping rate cost.
+     * @param \WC_Shipping_Rate $shipping_rate_object The shipping rate object.
+     *
+     * @return float|int|string
+     * @internal filter.
+     */
+    public function convert_shipping_rate_costs_for_shipping_method($cost, $shipping_rate_object)
+    {
+        if ($this->is_shipping_method($shipping_rate_object)) {
+            $cost = $this->converter->convert($cost);
+        }
+        return $cost;
+    }
+    /**
+     * Filter the taxes.
+     *
+     * @param float[]|int[]|string[] $taxes                The shipping rate taxes array.
+     * @param \WC_Shipping_Rate      $shipping_rate_object The shipping rate object.
+     *
+     * @return float[]|int[]|string[]
+     * @internal filter.
+     */
+    public function convert_shipping_rate_taxes_for_shipping_method($taxes, $shipping_rate_object)
+    {
+        if ($this->is_shipping_method($shipping_rate_object)) {
+            $taxes = $this->converter->convert_array($taxes);
+        }
+        return $taxes;
+    }
+    /**
+     * Check if the shipping rate object's method ID is relevant to this class.
+     *
+     * @param \WC_Shipping_Rate $shipping_rate_object The shipping rate object.
+     *
+     * @return bool
+     */
+    private function is_shipping_method($shipping_rate_object)
+    {
+        return $shipping_rate_object instanceof \WC_Shipping_Rate && $this->shipping_method_id === $shipping_rate_object->get_method_id();
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/Switcher/WooCommerceMultiCurrency/ShippingMethodIntegration.php

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+<?php
+
+/**
+ * Shipping method integration.
+ *
+ * @package WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency;
+
+use FSVendor\WPDesk\PluginBuilder\Plugin\Hookable;
+/**
+ * Integrates shipping method (by method_id, ie.: flexible_shipping ) with WooCommerce Multicurrency plugin.
+ * @see https://woocommerce.com/products/multi-currency/
+ */
+class ShippingMethodIntegration implements \FSVendor\WPDesk\PluginBuilder\Plugin\Hookable
+{
+    /**
+     * @var string
+     */
+    private $shipping_method_id;
+    /**
+     * @var \WOOMC\Integration\Shipping\AbstractController
+     */
+    private $woocommerce_multicurrency_controller;
+    /**
+     * @param string $shipping_method_id .
+     */
+    public function __construct($shipping_method_id)
+    {
+        $this->shipping_method_id = $shipping_method_id;
+    }
+    /**
+     * Hooks.
+     */
+    public function hooks()
+    {
+        \add_action('woocommerce_multicurrency_loaded', array($this, 'add_integration_for_shipping_method'));
+    }
+    /**
+     * Add integration to WooCommerce MultiCurrency for shipping method.
+     */
+    public function add_integration_for_shipping_method()
+    {
+        $this->woocommerce_multicurrency_controller = new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency\ShippingMethodController($this->shipping_method_id, new \FSVendor\WPDesk\WooCommerce\CurrencySwitchers\Switcher\WooCommerceMultiCurrency\Converter());
+        $this->woocommerce_multicurrency_controller->hooks();
+    }
+}

wp-content/plugins/flexible-shipping/vendor_prefixed/wpdesk/wc-currency-switchers-integrations/src/SwitcherConverter.php

@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Interface Converter
+ * @package WPDesk\WooCommerce\CurrencySwitchers
+ */
+namespace FSVendor\WPDesk\WooCommerce\CurrencySwitchers;
+
+/**
+ * Interface for currency switchers converters.
+ */
+interface SwitcherConverter
+{
+    /**
+     * Convert value from shop currency to current currency.
+     *
+     * @param float $value Value in shop currency.
+     *
+     * @return float
+     */
+    public function convert($value);
+    /**
+     * Convert an array of prices.
+     *
+     * @return array
+     * @example convert_array( ['price' => '10', 'sale_price' => 5] ) --> ['price' => '12.4', 'sale_price' => 6.2]
+     */
+    public function convert_array($values);
+}