with open('src/gui_2.py', 'r', encoding='utf-8', newline='') as f:
    content = f.read()

old = '''   # Handle link deletion
   if ed.begin_delete():
    deleted = ed.get_deleted_link()
    if deleted:
     link_id = deleted[0]
     for t in self.active_tickets:
      tid = str(t.get('id', ''))
      for d in t.get('depends_on', []):
       if abs(hash(d + "_" + tid)) == link_id:
        t['depends_on'] = [dep for dep in t['depends_on'] if dep != d]
        self._push_mma_state_update()
        break
    ed.end_delete()
   ed.end()'''

new = '''   # Handle link deletion
   if ed.begin_delete():
    deleted = ed.get_deleted_link()
    if deleted:
     link_id = deleted[0]
     for t in self.active_tickets:
      tid = str(t.get('id', ''))
      for d in t.get('depends_on', []):
       if abs(hash(d + "_" + tid)) == link_id:
        t['depends_on'] = [dep for dep in t['depends_on'] if dep != d]
        self._push_mma_state_update()
        break
    ed.end_delete()
   # Validate DAG after any changes
   try:
    from src.dag_engine import TrackDAG
    ticket_dicts = [{'id': str(t.get('id', '')), 'depends_on': t.get('depends_on', [])} for t in self.active_tickets]
    temp_dag = TrackDAG(ticket_dicts)
    if temp_dag.has_cycle():
     imgui.open_popup("Cycle Detected!")
   except Exception:
    pass
   ed.end()'''

content = content.replace(old, new)
with open('src/gui_2.py', 'w', encoding='utf-8', newline='') as f:
    f.write(content)
print('Done')