"""投顾聊天入口的轻量意图识别。"""
from __future__ import annotations

import re

from common.common_const import AGENT_INTENT_DATA_QUERY


_QUERY_ACTIONS = (
    "查询",
    "查一下",
    "查看",
    "统计",
    "列出",
    "显示",
    "多少",
    "有哪些",
    "明细",
)
_DATA_TERMS = (
    "持仓",
    "资产",
    "收益",
    "交易记录",
    "申购",
    "赎回",
    "余额",
    "市值",
    "份额",
    "客户数据",
    "账户",
)
_NON_QUERY_INTENTS = ("推荐", "调仓", "再平衡", "话术", "沟通")


def recognize_advisor_intent(query: str | None, explicit_intent: str | None = None) -> str | None:
    """返回当前投顾聊天应使用的意图；无法判断时返回 ``None``。

    数据查询采用保守规则：必须命中查询动作或客户数据表达，且不能明显是
    推荐、调仓或话术请求，避免把生成类请求送入 NL2SQL。
    """
    if explicit_intent:
        return explicit_intent
    text = re.sub(r"\s+", "", query or "")
    if not text or any(term in text for term in _NON_QUERY_INTENTS):
        return None
    has_action = any(term in text for term in _QUERY_ACTIONS)
    has_data = any(term in text for term in _DATA_TERMS)
    if has_data and (has_action or "客户" in text or "近一年" in text or "本月" in text):
        return AGENT_INTENT_DATA_QUERY
    return None


__all__ = ["recognize_advisor_intent"]