feat: sanitize alt text to prevent invalid html code (#36)

README.md

@@ -255,6 +255,11 @@ After updating the addon, make sure to inspect the `config/aida.php` file to lea
          */
          $altText = SomeApi::get($asset, $locale);
 
+         /**
+          * You might want to sanitize the altText with `htmlspecialchars($altText, ENT_QUOTES, 'UTF-8')` to prevent invalid HTML code.
+          * Alternatively you can use the `sanitize` modifier in your view files.
+          */
+
          return $altText;
       }
    }

src/Generator/OpenAIGenerator.php

@@ -57,6 +57,9 @@ public function generate($asset, $locale = 'en')
         // TODO: The response could be incomplete, e. g. when the 'finishReason' is not 'stop', probably due to a token limitation or usage limit. These cases need to be handled.
         $result = trim($response->choices[0]->message->content);
 
-        return $result;
+        // Sanitize the result to convert special characters into HTML entities, preventing invalid HTML code.
+        $sanitizedResult = htmlspecialchars($result, ENT_QUOTES, 'UTF-8');
+
+        return $sanitizedResult;
     }
 }