From 4dcd93b94763cd4bdcbaa2617f63b6846d500125 Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Tue, 12 Nov 2024 15:36:32 +0100
Subject: [PATCH] Better validate input JSON fetched from Wikipedia

---
 src/NodaWikidataFetcher.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/NodaWikidataFetcher.php b/src/NodaWikidataFetcher.php
index 31d35a6..a9fcab4 100644
--- a/src/NodaWikidataFetcher.php
+++ b/src/NodaWikidataFetcher.php
@@ -151,7 +151,11 @@ final class NodaWikidataFetcher {
     private static function _getCleanedWikipediaSnippet(string $lang, string $title):string {
 
         $datafromwiki = MD_STD::runCurl(self::_getWikipediaApiLink($lang, $title), 10000);
-        $datafromwiki = strval(json_decode($datafromwiki, true)['parse']['text']['*']);
+        $json_decoded = json_decode($datafromwiki, true);
+        if (empty($json_decoded) || !isset($json_decoded['parse'])) {
+            return '';
+        }
+        $datafromwiki = strval($json_decoded['parse']['text']['*']);
 
         return self::_cleanWikidataInput($datafromwiki);