#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import json
import time
from typing import List, Tuple, Optional, Dict

import requests

from utils.logging_config import get_logger
from utils.mysql_db import MysqlHelper


logger = get_logger('StoreAgent')


CHUNK_API_URL = "http://61.48.133.26:8001/api/chunk"
DATASET_ID = 14
SCORE_THRESHOLD = 70


def _update_store_status(request_id: str, status: int) -> None:
    try:
        sql = "UPDATE knowledge_request SET store_status = %s WHERE request_id = %s"
        MysqlHelper.update_values(sql, (status, request_id))
        logger.info(f"更新store状态成功: requestId={request_id}, status={status}")
    except Exception as e:
        logger.error(f"更新store状态失败: requestId={request_id}, status={status}, error={e}")


def _fetch_query(request_id: str) -> str:
    sql = "SELECT query FROM knowledge_request WHERE request_id = %s"
    rows = MysqlHelper.get_values(sql, (request_id,))
    if rows and len(rows[0]) > 0:
        return rows[0][0] or ""
    return ""


def _fetch_extraction_data(request_id: str) -> List[Dict[str, str]]:
    sql = (
        "SELECT parsing_id, data FROM knowledge_extraction_content "
        "WHERE request_id = %s AND data IS NOT NULL AND data != '' AND score >= %s"
    )
    rows = MysqlHelper.get_values(sql, (request_id, SCORE_THRESHOLD))
    if not rows:
        return []
    return [{"parsing_id": str(row[0]), "data": row[1]} for row in rows]


def _fetch_content_id_by_parsing_id(parsing_id: str) -> Optional[str]:
    sql = "SELECT content_id FROM knowledge_parsing_content WHERE id = %s"
    rows = MysqlHelper.get_values(sql, (parsing_id,))
    if rows and len(rows[0]) > 0:
        return rows[0][0]
    return None


def _fetch_channel_by_content_id(content_id: str) -> Optional[str]:
    sql = "SELECT channel FROM knowledge_crawl_content WHERE content_id = %s LIMIT 1"
    rows = MysqlHelper.get_values(sql, (content_id,))
    if rows and len(rows[0]) > 0:
        return rows[0][0]
    return None


def _upload_chunk(text: str, query: str, channel: str = "", max_retries: int = 3, backoff_sec: float = 1.0) -> bool:
    # ext 需要是字符串 JSON
    payload = {
        "dataset_id": DATASET_ID,
        "title": "",
        "text": text,
        "ext": json.dumps({"query": query, "channel": channel or ""}, ensure_ascii=False),
    }
    headers = {"Content-Type": "application/json; charset=utf-8"}

    for attempt in range(max_retries):
        try:
            # 以 GET 方法发送，body 为 JSON 字符串
            body = json.dumps(payload, ensure_ascii=False).encode('utf-8')
            resp = requests.get(CHUNK_API_URL, headers=headers, data=body, timeout=30)
            logger.info(f"上传chunk请求体: payload={payload}")
            try:
                logger.info(f"上传chunk成功: resp={resp.json()}")
            except Exception:
                logger.info(f"上传chunk返回非JSON: text={resp.text[:500]}")
            if resp.status_code >= 200 and resp.status_code < 300:
                return True
            logger.warning(f"上传失败，状态码: {resp.status_code}, 第{attempt+1}次重试")
        except Exception as e:
            logger.warning(f"上传异常: {e}, 第{attempt+1}次重试")
        time.sleep(backoff_sec * (2 ** attempt))
    return False


def execute_store_agent(request_id: str) -> Tuple[int, int]:
    """
    执行存储流程：
    1) 更新 store_status = 1
    2) 读取 query 和符合条件的 data 列表
    3) 逐条上传到外部接口
    4) 全部成功 -> store_status = 2；否则 -> store_status = 3

    返回: (total, success)
    """
    _update_store_status(request_id, 1)

    try:
        query = _fetch_query(request_id)
        data_list = _fetch_extraction_data(request_id)

        total = len(data_list)
        success = 0

        if total == 0:
            # 没有可上传数据，按失败处理
            _update_store_status(request_id, 3)
            logger.info(f"无可上传数据: requestId={request_id}")
            return (0, 0)

        for item in data_list:
            text = item.get("data", "")
            parsing_id = item.get("parsing_id")

            channel = ""
            try:
                if parsing_id:
                    content_id = _fetch_content_id_by_parsing_id(parsing_id)
                    if content_id:
                        channel_value = _fetch_channel_by_content_id(content_id)
                        channel = channel_value or ""
            except Exception as e:
                logger.warning(f"获取channel失败: parsing_id={parsing_id}, error={e}")

            ok = _upload_chunk(text, query, channel)
            success += 1 if ok else 0

        if success == total:
            _update_store_status(request_id, 2)
        else:
            _update_store_status(request_id, 3)

        logger.info(f"store完成: requestId={request_id}, total={total}, success={success}")
        return (total, success)
    except Exception as e:
        logger.error(f"store流程异常: requestId={request_id}, error={e}")
        _update_store_status(request_id, 3)
        return (0, 0)