import json
import logging
import re
import websockets

logger = logging.getLogger("cs_agent")

_OUTBOUND_BLOCK_MARKERS = (
    "【历史记录摘要】",
    "【详细记录】",
    "【订单摘要】",
    "【订单详情】",
    "<think",
    "think_never_used",
    '[{"name":',
)

_HISTORY_LEAK_PATTERNS = [
    r'\[\d{4}-\d{2}-\d{2}[^\]]*\]\s*(客户|客服)[：:]',
    r'\[\d{2}:\d{2}:\d{2}\]\s*(客户|客服|我)[：:]',
    r'(根据|查看|查询|翻看)(历史|聊天|对话)(记录|内容)',
    r'历史(记录|对话|消息)(显示|表明|中)',
    r'之前的(聊天|对话|记录)(中|里|显示)',
    r'共\d+条(历史|对话)?消息',
    r'订单号[:：]\s*\d{10,}',
    r'(状态|金额|数量)[:：].*(状态|金额|数量)[:：]',
]


def _sanitize_outbound_text(content: str) -> str:
    if not content:
        return ""
    cleaned = str(content).strip()
    if "[转移会话]" in cleaned:
        return cleaned
    if any(marker in cleaned for marker in _OUTBOUND_BLOCK_MARKERS):
        logger.warning("[WebSocketSend] 拦截到内部内容外发，替换为安全兜底回复")
        return "我在帮你看记录，稍等哈"
    for pattern in _HISTORY_LEAK_PATTERNS:
        if re.search(pattern, cleaned):
            logger.warning(f"[WebSocketSend] 检测到历史记录泄露模式: {pattern[:30]}...")
            return "我在帮你看记录，稍等哈"
    return cleaned


async def send_text_flow(client, cy_id, acc_type, content):
    """主动发送文本消息。"""
    message = {
        "msg_id": "",
        "acc_id": "",
        "msg": _sanitize_outbound_text(content),
        "from_id": client.reply_id,
        "from_name": client.reply_id,
        "cy_id": cy_id,
        "acc_type": acc_type,
        "msg_type": 0,
        "cy_name": "",
    }
    await client.send_message(message)


async def send_image_flow(client, cy_id, acc_type, image_path):
    """主动发送图片消息。"""
    message = {
        "msg_id": "",
        "acc_id": "",
        "msg": image_path,
        "from_id": client.reply_id,
        "from_name": client.reply_id,
        "cy_id": cy_id,
        "acc_type": acc_type,
        "msg_type": 1,
        "cy_name": "",
    }
    await client.send_message(message)


async def send_message_flow(client, message):
    """发送消息到服务器。"""
    if client.websocket and client.websocket.state == websockets.protocol.State.OPEN:
        try:
            payload = dict(message) if isinstance(message, dict) else {}
            if int(payload.get("msg_type", 0) or 0) == 0:
                payload["msg"] = _sanitize_outbound_text(payload.get("msg", ""))
            msg_json = json.dumps(payload, ensure_ascii=False)
            await client.websocket.send(msg_json)
            pretty = json.dumps(payload, ensure_ascii=False, indent=2)
            client.logger.info(f"[{client.get_time()}] 发送成功:\n{pretty}")
            client._activity_log(
                "send_message_success",
                trace_id=payload.get("_trace_id", ""),
                acc_id=payload.get("acc_id", ""),
                customer_id=payload.get("cy_id") or payload.get("from_id", ""),
                msg_type=payload.get("msg_type", 0),
                msg=payload.get("msg", ""),
            )
        except Exception as e:
            client.logger.info(f"[{client.get_time()}] 发送失败: {e}")
            payload = message if isinstance(message, dict) else {}
            client._activity_log(
                "send_message_error",
                trace_id=payload.get("_trace_id", ""),
                acc_id=payload.get("acc_id", ""),
                customer_id=payload.get("cy_id") or payload.get("from_id", ""),
                error=str(e),
            )
    else:
        client.logger.info(f"[{client.get_time()}] 错误: 连接未打开")
        payload = message if isinstance(message, dict) else {}
        client._activity_log(
            "send_message_skipped",
            trace_id=payload.get("_trace_id", ""),
            reason="socket_not_open",
            acc_id=payload.get("acc_id", ""),
            customer_id=payload.get("cy_id") or payload.get("from_id", ""),
        )