Stop orders
from areas
you don’t deliver to.

# Check whether postcode 00100 is in zone
curl -X POST https://api.deliveryzone.fi/api/v1/delivery/check \
  -H "X-Api-Key: dz_live_..." \
  -H "Content-Type: application/json" \
  -d '{"destinationPostcode":"00100","basketValueCents":4500}'

# response
{ "canDeliver": true, "matchedZoneName": "Helsinki Center", "priceCents": 590, "currency": "EUR", "estimatedDeliveryMinutes": 45, "reasonCode": "DELIVERABLE" }

const checkZone = async (postcode, basket) => {
  const res = await fetch('https://api.deliveryzone.fi/api/v1/delivery/check', {
    method: 'POST',
    headers: { 'X-Api-Key': process.env.DZ_KEY, 'Content-Type': 'application/json' },
    body: JSON.stringify({ destinationPostcode: postcode, basketValueCents: basket }),
  });
  return res.json();
};
const r = await checkZone('00100', 4500);
if (!r.canDeliver) showError(r.reasonCode);
else setShippingFee(r.priceCents);

add_filter('woocommerce_package_rates', function($rates, $pkg) {
  $r = wp_remote_post('https://api.deliveryzone.fi/api/v1/delivery/check', [
    'headers' => ['X-Api-Key' => get_option('dz_api_key'), 'Content-Type' => 'application/json'],
    'body' => json_encode(['destinationPostcode' => $pkg['destination']['postcode']]),
  ]);
  $data = json_decode(wp_remote_retrieve_body($r), true);
  if (!$data['canDeliver']) return [];
  foreach ($rates as $rate) $rate->cost = $data['priceCents'] / 100;
  return $rates;
}, 10, 2);