Allow different sub-vocabs of NDP-IKMK for places

src/enums/MDNodaRepository.php

@@ -205,7 +205,7 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
             self::moebeltypologie => 'https://term.museum-digital.de/moebel/tag/',
             self::ndb_adb   => 'https://www.deutsche-biographie.de/pnd',
             self::ndl       => 'https://id.ndl.go.jp/auth/ndlna/',
-            self::ndp_ikmk  => 'https://ikmk.smb.museum/ndp/land/',
+            self::ndp_ikmk  => 'https://ikmk.smb.museum/ndp/',
             self::ndp_ikmk_persons  => 'https://ikmk.smb.museum/ndp/person/',
             self::nomisma   => 'http://nomisma.org/id/',
             self::npg       => 'https://www.npg.org.uk/collections/search/person/',
@@ -473,6 +473,36 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
 
     }
 
+    /**
+     * Validates an NDP-IKMK ID. The IKMK vocabularies for places are actually quite
+     * numerous, identifying places, countries, regions separately.
+     *
+     * @param string $id ID to validate.
+     *
+     * @return string|false
+     */
+    private static function validateNdpIkmkForPlaces(string $id):string|false {
+
+        $id = str_replace("https://ikmk.smb.museum/ndp/", "", trim($id, '/'));
+
+        $parts = explode('/', $id);
+        if (count($parts) !== 2) {
+            return false;
+        }
+
+        if (!in_array($parts[0], ['ort', 'land', 'region'], true)) {
+            return false;
+        }
+
+        // There is an issue with this regex
+        if (self::_is_numeric($parts[1]) === false) {
+            return false;
+        }
+
+        return $parts[0] . '/' . $parts[1];
+
+    }
+
     /**
      * Validates a PIM ID, returning a string or false.
      *
@@ -661,7 +691,7 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
                 'http://id.ndl.go.jp/auth/ndlna/',
                 'https://id.ndl.go.jp/auth/ndlna/',
             ]),
-            self::ndp_ikmk  => self::validateNumericId($id, ['https://ikmk.smb.museum/ndp/land/']),
+            self::ndp_ikmk  => self::validateNdpIkmkForPlaces($id),
             self::ndp_ikmk_persons => self::validateNumericId($id, ['https://ikmk.smb.museum/ndp/person/']),
             self::nomisma   => str_replace('http://nomisma.org/id/', '', $id),
             self::npg       => self::validateNpgId($id),

tests/MDNodaRepositoryTest.php

@@ -69,5 +69,12 @@ final class MDNodaRepositoryTest extends TestCase {
         self::assertEquals("2869150688328112660005", MDNodaRepository::viaf->validateId("2869150688328112660005"));
         self::assertEquals(false, MDNodaRepository::viaf->validateId("2869150688328112;;660005"));
 
+        # NDP-IKMK (Places)
+        self::assertEquals("ort/2847", MDNodaRepository::ndp_ikmk->validateId("https://ikmk.smb.museum/ndp/ort/2847"));
+        self::assertEquals("land/123", MDNodaRepository::ndp_ikmk->validateId("https://ikmk.smb.museum/ndp/land/123"));
+        self::assertEquals("region/123", MDNodaRepository::ndp_ikmk->validateId("https://ikmk.smb.museum/ndp/region/123"));
+        self::assertEquals("land/123", MDNodaRepository::ndp_ikmk->validateId("land/123"));
+        self::assertEquals(false, MDNodaRepository::ndp_ikmk->validateId("123123"));
+
     }
 }