test file, udi to key

src/Umbraco.Web.UI.Client/libs/utils/udi-service.ts

@@ -1,3 +1,23 @@
 export function buildUdi(entityType: string, guid: string) {
 	return `umb://${entityType}/${guid.replace(/-/g, '')}`;
 }
+
+export function getKeyFromUdi(udi: string) {
+	if (typeof udi !== 'string') {
+		throw 'udi is not a string';
+	}
+	if (!udi.startsWith('umb://')) {
+		throw 'udi does not start with umb://';
+	}
+	const withoutScheme = udi.substring('umb://'.length);
+	const withoutHost = withoutScheme.substring(withoutScheme.indexOf('/') + 1).trim();
+
+	if (withoutHost.length !== 32) {
+		throw 'udi is not 32 chars';
+	}
+
+	return `${withoutHost.substring(0, 8)}-${withoutHost.substring(8, 12)}-${withoutHost.substring(
+		12,
+		16
+	)}-${withoutHost.substring(16, 20)}-${withoutHost.substring(20)}`;
+}