user_id = await get_user()
if not user_id:
    return json.dumps({"status": "error", "message": "未登录"}, ensure_ascii=False)

pipeline_id = params_kw.get('pipeline_id', '')
step = params_kw.get('step', '')
modify_type = params_kw.get('modify_type', 'input')  # 'input' or 'output'
content = params_kw.get('content', '')

if not pipeline_id or not step or not content:
    return json.dumps({"status": "error", "message": "缺少必要参数"}, ensure_ascii=False)

try:
    content_data = json.loads(content)
except Exception:
    content_data = content

updates = {step: {"content": content_data}}
rerun_from = "node" if modify_type == "input" else "next"

try:
    result = await hermes_pipeline_modify(pipeline_id, updates, rerun_from)
    return json.dumps(result, ensure_ascii=False)
except Exception as e:
    return json.dumps({"status": "error", "message": str(e)}, ensure_ascii=False)