first commit

public/typo3conf/ext/femanager/Classes/DataProvider/CountryZonesDataProvider.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace In2code\Femanager\DataProvider;
+
+use SJBR\StaticInfoTables\Domain\Model\Country;
+use SJBR\StaticInfoTables\Domain\Model\CountryZone;
+use SJBR\StaticInfoTables\Domain\Repository\CountryRepository;
+use SJBR\StaticInfoTables\Domain\Repository\CountryZoneRepository;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+class CountryZonesDataProvider
+{
+    private $countryZoneRepository;
+
+    private $countryRepository;
+
+    public function __construct()
+    {
+        // Can not autowire optional dependencies
+        $this->countryZoneRepository = GeneralUtility::makeInstance(CountryZoneRepository::class);
+        $this->countryRepository = GeneralUtility::makeInstance(CountryRepository::class);
+    }
+
+    /** @return CountryZone[] */
+    public function getCountryZonesForCountryIso3(string $countryIso3): array
+    {
+        $country = $this->getCountryForIsoCode3($countryIso3);
+        if (null === $country) {
+            return [];
+        }
+        $countryZones = $this->countryZoneRepository->findByCountry($country)->toArray();
+        usort(
+            $countryZones,
+            function (CountryZone $left, CountryZone $right) {
+                return strcasecmp($left->getLocalName(), $right->getLocalName());
+            }
+        );
+        return $countryZones;
+    }
+
+    public function hasCountryZonesForCountryIso3(string $countryIso3): bool
+    {
+        return $this->countryZoneRepository->countByCountryIsoCodeA3($countryIso3) > 0;
+    }
+
+    /**
+     * @param string $countryIso3
+     * @return Country|null
+     */
+    private function getCountryForIsoCode3(string $countryIso3): ?Country
+    {
+        $countries = $this->countryRepository->findAllowedByIsoCodeA3($countryIso3);
+        $country = null;
+        if (count($countries) === 1) {
+            $country = array_values($countries)[0];
+        }
+        return $country;
+    }
+}