classes (lang-/country-/ * currency-) on a full page render (FrontController::assignGeneralPurposeVariables + * getTemplateVarPage). The 4-step checkout stays consistent because every step * transition reloads the page; OPC never reloads, so those values go stale after an * AJAX address/carrier/cart change. This builder mirrors how Core derives them * so the front helper can patch window.prestashop.* and the body classes without a reload. */ class OpcContextRefreshBuilder { /** * @return array */ public function build(\Context $context, ?\Country $country = null): array { $country = $country instanceof \Country ? $country : $this->resolveTaxCountry($context); $currency = $context->currency; $cart = $context->cart; $data = []; if ($country instanceof \Country && \Validate::isLoadedObject($country)) { $data['country'] = [ 'id' => (int) $country->id, 'iso_code' => (string) $country->iso_code, ]; } if ($currency instanceof \Currency && \Validate::isLoadedObject($currency)) { $data['currency'] = [ 'id' => (int) $currency->id, 'iso_code' => (string) $currency->iso_code, ]; } if ($cart instanceof \Cart && \Validate::isLoadedObject($cart)) { try { $locale = $context->getCurrentLocale(); $currencyIsoCode = ($currency instanceof \Currency) ? (string) $currency->iso_code : ''; $format = static function (float $amount) use ($locale, $currencyIsoCode): array { return [ // numeric amount — for amount-threshold BNPL widgets (Klarna, PayPal Pay Later) 'amount' => $amount, 'value' => $locale ? $locale->formatPrice($amount, $currencyIsoCode) : (string) $amount, ]; }; $totalIncludingTax = (float) $cart->getOrderTotal(true, \Cart::BOTH); $totalExcludingTax = (float) $cart->getOrderTotal(false, \Cart::BOTH); // Mirror the cart presenter's totals shape (total / incl_tax / excl_tax) so an // amount-threshold BNPL widget — or any window.prestashop.cart.totals reader — stays // internally consistent after the front re-sync, instead of seeing a partial totals object. $data['cart'] = [ 'totals' => [ 'total' => $format($totalIncludingTax), 'total_including_tax' => $format($totalIncludingTax), 'total_excluding_tax' => $format($totalExcludingTax), ], ]; } catch (\Throwable $exception) { // The totals are a best-effort enrichment for window.prestashop.cart readers: a // failure to compute them (e.g. no DI container in a CLI context) must never take // down the whole OPC response — the client-side sync skips absent keys. } } return $data; } private function resolveTaxCountry(\Context $context): ?\Country { $fallback = $context->country instanceof \Country ? $context->country : null; $cart = $context->cart; if (!$cart instanceof \Cart || !\Validate::isLoadedObject($cart)) { return $fallback; } $taxAddressType = (string) \Configuration::get('PS_TAX_ADDRESS_TYPE'); if ($taxAddressType === '' || !property_exists($cart, $taxAddressType)) { $taxAddressType = 'id_address_delivery'; } $addressId = (int) $cart->{$taxAddressType}; if ($addressId <= 0) { $addressId = (int) $cart->id_address_delivery; } if ($addressId <= 0) { return $fallback; } $address = new \Address($addressId); if (!\Validate::isLoadedObject($address) || (int) $address->id_country <= 0) { return $fallback; } $country = new \Country((int) $address->id_country); return \Validate::isLoadedObject($country) ? $country : $fallback; } }