From d295e160499ffb3616988377a5dfc2dbeed10d3e Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Tue, 26 Sep 2023 01:30:40 +0200
Subject: [PATCH] Better validate Wikipedia links

---
 src/enums/MDNodaRepository.php | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/enums/MDNodaRepository.php b/src/enums/MDNodaRepository.php
index fef7685..7fbc181 100644
--- a/src/enums/MDNodaRepository.php
+++ b/src/enums/MDNodaRepository.php
@@ -482,6 +482,28 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
 
     }
 
+    /**
+     * Validates a Wikipedia link.
+     *
+     * @param string $id ID to validate.
+     *
+     * @return string|false
+     */
+    public static function validateWikipediaId(string $id):string|false {
+
+        $validation = strtr($id, [
+            'https://de.wikipedia.org/wiki/' => '',
+            'https://en.wikipedia.org/wiki/' => '',
+            'https://sv.wikipedia.org/wiki/' => '',
+            'https://ru.wikipedia.org/wiki/' => '',
+        ]);
+
+        if (str_contains($validation, "/")) return false;
+
+        return $validation;
+
+    }
+
     /**
      * Validates an ID.
      *
@@ -532,7 +554,7 @@ enum MDNodaRepository implements MDValueEnumInterface, JsonSerializable {
                 'http://viaf.org/viaf/',
             ]),
             self::wikidata  => self::validateWikidataId($id),
-            self::wikipedia => str_replace('https://de.wikipedia.org/wiki/', '', $id),
+            self::wikipedia => self::validateWikipediaId($id),
         };
 
     }