Document gen fixed

app/Services/Documents/TokenScanner.php

@@ -4,19 +4,25 @@
 
 class TokenScanner
 {
-    // Allow entity.attr with attr accepting letters, digits, underscore, dot and hyphen for flexibility (e.g., custom.order-id)
-    private const REGEX = '/{{\s*([a-zA-Z0-9_]+\.[a-zA-Z0-9_.-]+)\s*}}/';
+    // Allow nested tokens like client.person.full_name or custom.order-id
+    // Pattern: entity(.[subentity])* . attribute
+    private const REGEX_DOUBLE = '/{{\s*([a-zA-Z0-9_]+(?:\.[a-zA-Z0-9_]+)*\.[a-zA-Z0-9_.-]+)\s*}}/';
+
+    private const REGEX_SINGLE = '/\{\s*([a-zA-Z0-9_]+(?:\.[a-zA-Z0-9_]+)*\.[a-zA-Z0-9_.-]+)\s*\}/';
 
     /**
      * @return array<int,string>
      */
     public function scan(string $content): array
     {
-        preg_match_all(self::REGEX, $content, $m);
-        if (empty($m[1])) {
-            return [];
+        $out = [];
+        if (preg_match_all(self::REGEX_DOUBLE, $content, $m1) && ! empty($m1[1])) {
+            $out = array_merge($out, $m1[1]);
+        }
+        if (preg_match_all(self::REGEX_SINGLE, $content, $m2) && ! empty($m2[1])) {
+            $out = array_merge($out, $m2[1]);
         }
 
-        return array_values(array_unique($m[1]));
+        return array_values(array_unique($out));
     }
 }