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<?php

if (!defined('ABSPATH')) {
    exit;
}
class WC_Shipping_Zones
{
    public static function get_zones($context = 'admin')
    {
        $data_store = WC_Data_Store::load('shipping-zone');
        $raw_zones = $data_store->get_zones();
        $zones = array();
        foreach ($raw_zones as $raw_zone) {
            $zone = new WC_Shipping_Zone($raw_zone);
            $zones[$zone->get_id()] = $zone->get_data();
            $zones[$zone->get_id()]['zone_id'] = $zone->get_id();
            $zones[$zone->get_id()]['formatted_zone_location'] = $zone->get_formatted_location();
            $zones[$zone->get_id()]['shipping_methods'] = $zone->get_shipping_methods(false, $context);
        }
        return $zones;
    }
    public static function get_zone($zone_id)
    {
        return self::get_zone_by('zone_id', $zone_id);
    }
    public static function get_zone_by($by = 'zone_id', $id = 0)
    {
        $zone_id = false;
        switch ($by) {
            case 'zone_id':
                $zone_id = $id;
                break;
            case 'instance_id':
                $data_store = WC_Data_Store::load('shipping-zone');
                $zone_id = $data_store->get_zone_id_by_instance_id($id);
                break;
        }
        if (false !== $zone_id) {
            try {
                return new WC_Shipping_Zone($zone_id);
            } catch (Exception $e) {
                return false;
            }
        }
        return false;
    }
    public static function get_shipping_method($instance_id)
    {
        $data_store = WC_Data_Store::load('shipping-zone');
        $raw_shipping_method = $data_store->get_method($instance_id);
        $wc_shipping = WC_Shipping::instance();
        $allowed_classes = $wc_shipping->get_shipping_method_class_names();
        if (!empty($raw_shipping_method) && in_array($raw_shipping_method->method_id, array_keys($allowed_classes), true)) {
            $class_name = $allowed_classes[$raw_shipping_method->method_id];
            if (is_object($class_name)) {
                $class_name = get_class($class_name);
            }
            return new $class_name($raw_shipping_method->instance_id);
        }
        return false;
    }
    public static function delete_zone($zone_id)
    {
        $zone = new WC_Shipping_Zone($zone_id);
        $zone->delete();
    }
    public static function get_zone_matching_package($package)
    {
        $country = strtoupper(wc_clean($package['destination']['country']));
        $state = strtoupper(wc_clean($package['destination']['state']));
        $postcode = wc_normalize_postcode(wc_clean($package['destination']['postcode']));
        $cache_key = WC_Cache_Helper::get_cache_prefix('shipping_zones') . 'wc_shipping_zone_' . md5(sprintf('%s+%s+%s', $country, $state, $postcode));
        $matching_zone_id = wp_cache_get($cache_key, 'shipping_zones');
        if (false === $matching_zone_id) {
            $data_store = WC_Data_Store::load('shipping-zone');
            $matching_zone_id = $data_store->get_zone_id_from_package($package);
            wp_cache_set($cache_key, $matching_zone_id, 'shipping_zones');
        }
        return new WC_Shipping_Zone($matching_zone_id ? $matching_zone_id : 0);
    }
}