feature(conditions): additional

src/WooCommerce/ShippingMethodInstanceStrategy.php

+<?php
+
+namespace WPDesk\ShowDecision\WooCommerce;
+
+use WPDesk\ShowDecision\ShouldShowStrategy;
+
+class ShippingMethodInstanceStrategy implements ShouldShowStrategy
+{
+
+	private \WC_Shipping_Zones $shipping_zones;
+
+    private string $method_id;
+
+	public function __construct(\WC_Shipping_Zones $shipping_zones, string $method_id)
+	{
+		$this->shipping_zones = $shipping_zones;
+		$this->method_id = $method_id;
+	}
+
+	public function shouldDisplay(): bool
+	{
+		if ($this->isInShippingSettings()) {
+			if (isset($_GET['instance_id'])) {
+				$shipping_method = $this->shipping_zones::get_shipping_method(sanitize_key($_GET['instance_id']));
+				if ($shipping_method instanceof \WC_Shipping_Method) {
+					return $shipping_method->id === $this->method_id;
+				}
+			}
+		}
+		return false;
+	}
+
+	private function isInShippingSettings() : bool
+	{
+		if ($this->isGetParameterWithValue('page', 'wc-settings') && $this->isGetParameterWithValue('tab', 'shipping')) {
+			return \true;
+		}
+		return \false;
+	}
+
+	private function isGetParameterWithValue(string $parameter, string $value) : bool
+	{
+		return isset($_GET[$parameter]) && $_GET[$parameter] === $value;
+	}
+
+}