WooCommerce: enable locale delivery only when minimum amount is reached

functions.php

<?php
/**
 * Disable local delivery when a minimum amount is not reached.
 * The minimum amount is the free shipping one.
 */
function setMinimumAmountForLocalDelivery($isAvailable) {
	// get cart amount :
	if (WC()->cart->prices_include_tax) {
		$cartAmount = WC()->cart->cart_contents_total + array_sum(WC()->cart->taxes);
	} else {
		$cartAmount = WC()->cart->cart_contents_total;
	}

	// get free shipping amount :
	$freeShippingSettings = get_option("woocommerce_free_shipping_settings");
	$freeShippingMinimumAmount = $freeShippingSettings["min_amount"];

	// disable local delivery when required
	if ($cartAmount < $freeShippingMinimumAmount)  return false;

	return $isAvailable;
}
add_filter("woocommerce_shipping_local_delivery_is_available", "setMinimumAmountForLocalDelivery", 20);
?>