I don't understand why but for this 'res' source, the country code is…

… returned as "1", yes a string, instead of "cz", so let's deal with that

It could be easily removed in the future, and there's a test for it (the one for the company with id 00256081), so if it is removed and it shouldn't be, I should know about it rather soon.

Fix #242

site/app/CompanyInfo/CompanyRegisterAres.php

@@ -61,8 +61,9 @@ public function getDetails(string $companyId): CompanyInfoDetails
 					'psc' => Expect::int(),
 					'kodStatu' => Expect::string(),
 				])->otherItems(),
+				'primarniZdroj' => Expect::string(),
 			])->otherItems();
-			/** @var object{ico:string, dic:string|null, obchodniJmeno:string, sidlo:object{nazevObce:string, nazevUlice:string, cisloDomovni:int, cisloOrientacni:int, cisloOrientacniPismeno:string, psc:int, kodStatu:string}} $data */
+			/** @var object{ico:string, dic:string|null, obchodniJmeno:string, sidlo:object{nazevObce:string, nazevUlice:string, cisloDomovni:int, cisloOrientacni:int, cisloOrientacniPismeno:string, psc:int, kodStatu:string}, primarniZdroj:string|null} $data */
 			$data = $this->schemaProcessor->process($schema, Json::decode($content));
 		} catch (JsonException | ValidationException $e) {
 			throw new CompanyInfoException($e->getMessage(), previous: $e);
@@ -84,7 +85,7 @@ public function getDetails(string $companyId): CompanyInfoDetails
 			$streetAndNumber,
 			$data->sidlo->nazevObce,
 			(string)$data->sidlo->psc,
-			strtolower($data->sidlo->kodStatu),
+			$this->resolveCountryCode($data->primarniZdroj, $data->sidlo->kodStatu, $companyId),
 		);
 	}
 
@@ -122,4 +123,20 @@ private function formatStreet(?string $city, ?string $street, ?int $houseNumber,
 		return $result;
 	}
 
+
+	/**
+	 * @throws CompanyInfoException
+	 */
+	private function resolveCountryCode(?string $source, string $code, string $companyId): string
+	{
+		if ($source === 'res') {
+			if ($code === '1') {
+				return 'cz';
+			} else {
+				throw new CompanyInfoException("Invalid country code {$code} from source {$source} for company {$companyId}");
+			}
+		}
+		return strtolower($code);
+	}
+
 }