struct for markdown, with a numbering algorithm for each node that goes in the form of #a#b#c

lib/structs.dart

@@ -1,6 +1,7 @@
 //data structures
 
 import 'dart:typed_data';
+import 'package:markdown/markdown.dart' as md;
 
 class GetThreadResponse {
   final int id;
@@ -151,6 +152,48 @@ class AttachmentResponse {
 }
 
 class AugmentTree {
-  List children = [];
+  List<AugmentTree> children = [];
-  AugmentTree? node;
+
+  String data = '';
+  AugmentTree? parent;
+  String ogTag = '';
+  String numbering = '';
+
+  void setData(String data) {
+    this.data = data;
+  }
+
+  static String _intToLetter(int index) {
+    return String.fromCharCode('a'.runes.first + index);
+  }
+
+  void addNumbering({String prefix = ''}) {
+    //if called in root, numbers them all
+    for (int i = 0; i < children.length; i++) {
+      final child = children[i];
+      String childNumbering;
+      bool parentIsLettered = prefix.contains(RegExp(r'[a-z]'));
+      if (prefix.isEmpty) {
+        parentIsLettered = false;
+      } else {
+        parentIsLettered = prefix.runes.last >= 'a'.runes.first &&
+                                  prefix.runes.last <= 'z'.runes.first;
+      }
+
+      if (prefix.isEmpty) {
+        // Top-level children (direct children of the original root being numbered) get 1, 2, 3...
+        childNumbering = (i + 1).toString();
+      } else if (parentIsLettered) {
+        // Deeper children get '1a', '1b', '2a', '2b', etc.
+        childNumbering = '$prefix${i + 1}';
+      } else {
+        childNumbering = '$prefix${_intToLetter(i)}';
+      }
+
+      child.numbering = childNumbering;
+
+      // Recursively call for children
+      child.addNumbering(prefix: childNumbering);
+    }
+  }
 }