first commit

public/typo3conf/ext/femanager/Classes/Controller/DataController.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace In2code\Femanager\Controller;
+
+use In2code\Femanager\DataProvider\CountryZonesDataProvider;
+use Psr\Http\Message\ResponseInterface;
+use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
+
+class DataController extends ActionController
+{
+    protected $countryZonesDataProvider;
+
+    public function __construct(CountryZonesDataProvider $countryZonesDataProvider)
+    {
+        $this->countryZonesDataProvider = $countryZonesDataProvider;
+    }
+
+    public function getStatesForCountryAction(string $country): ResponseInterface
+    {
+        $countryZones = $this->countryZonesDataProvider->getCountryZonesForCountryIso3($country);
+        $jsonData = [];
+        foreach ($countryZones as $countryZone) {
+            $jsonData[$countryZone->getIsoCode()] = $countryZone->getLocalName();
+        }
+
+        return $this->jsonResponse(json_encode($jsonData));
+    }
+}