WooCommerce Product Add-Ons (by WooCommerce): FOX - WooCommerce Currency Switcher Professional

WooCommerce Product Add-Ons (by WooCommerce)

The Plugin URL: https://woocommerce.com/products/product-add-ons/

In file wp-content\plugins\woocommerce-product-addons\includes\class-wc-product-addons-cart.php add next code:

if ($addon['price'] AND 'percentage_based' !== $addon['price_type'] AND class_exists('WOOCS')) {
    global $WOOCS;
    $currrent = $WOOCS->current_currency;
    if ($currrent != $WOOCS->default_currency AND $WOOCS->is_multiple_allowed) {
        $currencies = $WOOCS->get_currencies();
        $rate = $currencies[$currrent]['rate'];
        $addon['price'] = $addon['price'] * $rate;
    }
}

Also in the same file add code:

if (class_exists('WOOCS')) {
    global $WOOCS;
    $currrent = $WOOCS->current_currency;
    if ($currrent != $WOOCS->default_currency AND $WOOCS->is_multiple_allowed) {
        $currencies = $WOOCS->get_currencies();
        $rate = $currencies[$currrent]['rate'];
        $addon_price = $addon_price * $rate;
    }
}

In file wp-content\plugins\woocommerce-product-addons\includes\class-wc-product-addons-display.php add next code:

$suffix = ''; //woocs fix
$woocs_is_multiple = 0;
if (class_exists('WOOCS')) {
    global $WOOCS;
    $woocs_is_multiple = $WOOCS->is_multiple_allowed;
}

And on the same file add code:

'woocs_is_multiple' => $woocs_is_multiple

In file wp-content\plugins\woocommerce-product-addons\assets\js\addons.js add next code:

var woocs_exists = true;

try {
    if (woocs_current_currency)
        woocs_exists = true;
} catch (e) {
    woocs_exists = false;
}

if (woocs_exists) {
    if (woocs_current_currency != undefined AND woocs_current_currency['rate'] != undefined AND woocommerce_addons_params.woocs_is_multiple == 0) {
        product_price = product_price * woocs_current_currency['rate'];
    }
}

And on the same file:

var woocs_exists = true;

try {
    if (woocs_current_currency)
        woocs_exists = true;
} catch (e) {
    woocs_exists = false;
}

if (woocs_exists) {
    if (woocs_current_currency != undefined AND woocs_current_currency['rate'] != undefined AND addon_cost != undefined) {
        addon_data.cost = addon_data.cost * woocs_current_currency['rate'];
        addon_data.cost_raw = addon_data.cost_raw * woocs_current_currency['rate'];
    }
}

into file functions.php of the current WordPress theme add next code:

add_filter('woocommerce_product_addons_option_price', function ($price_html, $option, $i, $type) {

    if ($price_html AND class_exists('WOOCS')) {
        global $WOOCS;

        $option_price = !empty($option['price']) ? $option['price'] : '';
        $option_price_type = !empty($option['price_type']) ? $option['price_type'] : '';
        $price_prefix = 0 < $option_price ? '+' : '';
        $price_type = $option_price_type;
        $price_raw = apply_filters('woocommerce_product_addons_option_price_raw', $option_price, $option);
        $price_raw = $WOOCS->woocs_exchange_value($price_raw);
        $price_html = '(' . $price_prefix . wc_price(WC_Product_Addons_Helper::get_product_addon_price_for_display($price_raw)) . ')';
    }

    return $price_html;
}, 20, 4);

FOX - Currency Switcher Professional for WooCommerce