Refactor country code logic

apps/api/src/helper/country.helper.ts

@@ -0,0 +1,17 @@
+import { countries } from 'countries-list';
+
+export function getCountryCodeByName({
+  aliases = {},
+  name
+}: {
+  aliases?: Record<string, string>;
+  name: string;
+}): string {
+  for (const [code, country] of Object.entries(countries)) {
+    if (country.name === name || country.name === aliases[name]) {
+      return code;
+    }
+  }
+
+  return undefined;
+}