Woocommerce get current shipping zone - php

Question

I create a custom shipping method.
(https://docs.woocommerce.com/document/shipping-method-api/)
In the calculate_shipping function i want to set the price of my shipping method based on the shipping zone:
If shipping zone is 'Zone 1' set price to 15
else set price to 20
So i want to know, how can i get the current shipping zone ?
I already try to see this doc: https://docs.woocommerce.com/wc-apidocs/class-WC_Shipping_Zone.html
Maybe i don't understand...
public function calculate_shipping( $package=Array()) {
global $woocommerce;
$cart_total=$woocommerce->cart->cart_contents_total;
$current_hour=date('His');
$start_hour='110000';
$end_hour='210000';
// CONDITIONAL CHECK
// OPEN HOUR
if($current_hour >= $start_hour && $current_hour <= $end_hour){
$is_open=true;
}else{
$is_open=false;
}
// price PER ZONE
$zone=""; // need to know how to get zone name or zone id
if($zone=='Zone 1' && $cart_total>='60'){
$min_order=true;
$cost = 6;
}elseif($zone=='Zone 2' && $cart_total>='120'){
$min_order=true;
$cost = 8;
}elseif($zone=='Zone 3' && $cart_total>='180'){
$min_order=true;
$cost = 9;
}else{
$min_order=false;
$cost = 0;
}
if($is_open==true && $min_order==true){
$allowed=true;
}else{
$allowed=false;
}
$rate = array(
'id' => $this->id,
'label' => 'Livraison Express T '.wc_get_shipping_zone().' T',
'cost' => $cost,
);
// Register the rate
if($allowed==true){
$this->add_rate( $rate );
}
}

Answer 1

I find a solution myself
Like that:
$shipping_zone = WC_Shipping_Zones::get_zone_matching_package( $package );
$zone=$shipping_zone->get_zone_name();
Complete function:
public function calculate_shipping( $package=Array()) {
global $woocommerce;
$shipping_zone = WC_Shipping_Zones::get_zone_matching_package( $package );
$zone=$shipping_zone->get_zone_name();
if($zone=='Zone 1'){
$cost = 6;
}else{
$cost=12;
}
$rate = array(
'id' => $this->id,
'label' => 'Delivery Name',
'cost' => $cost,
);
$this->add_rate( $rate );
}