update

conv/country.go

@@ -0,0 +1,21 @@
+package conv
+
+import "strings"
+
+// CountryFromHost extracts a country code from a hostname (or URL) by looking
+// for known subdomain suffixes. Returns "se" when no country is detected.
+//
+// This replaces three duplicated implementations across the cart, checkout,
+// and tracking services. The detection is deliberately coarse — hostnames
+// like "shop-no.example.com" and URLs like "https://shop-no.example.com/page"
+// both match.
+func CountryFromHost(host string) string {
+	lower := strings.ToLower(host)
+	if strings.Contains(lower, "-no") {
+		return "no"
+	}
+	if strings.Contains(lower, "-se") {
+		return "se"
+	}
+	return "se"
+}