import time
from datetime import datetime, timedelta, timezone
from core.utils import get_current_date_time
from typing import Optional
import pandas as pd
import okx.MarketData as Market
from core.utils import timestamp_to_datetime
from core.db.db_trade_data import DBTradeData
import core.logger as logging

logger = logging.logger

class TradeData:
    def __init__(self, 
        api_key: str, 
        secret_key: str, 
        passphrase: str, 
        sandbox: bool = True,
        db_url: str = None):
        flag = "1" if sandbox else "0" # 0:实盘环境 1:沙盒环境
        self.market_api = Market.MarketAPI(
            api_key=api_key, api_secret_key=secret_key, passphrase=passphrase, 
            flag=flag
        )
        self.db_url = db_url
        self.db_trade_data = DBTradeData(self.db_url)
    
    def get_history_trades(self, symbol: str, start_ts: int, end_ts: int, limit: int = 100):
        """
        获取历史交易数据
        :param symbol: 交易对
        :param start_ts: 起始时间（毫秒级timestamp）
        :param end_ts: 结束时间（毫秒级timestamp）
        :param limit: 每次请求数量
        :return: pd.DataFrame
        symbol-USDT）。
        tradeId：交易ID。
        px：交易价格（如USDT）。
        sz：交易数量（如BTC数量）。
        side：交易方向（buy表示买入，sell表示卖出）
        ts：交易时间戳（成交时间，Unix时间戳的毫秒数格式， 如1597026383085）。
        """
        try:
            all_trades = []
            after = end_ts  # 从较晚时间开始（OKX的after表示更早的数据）
            
            while True:
                count = 0
                while True:
                    try:
                        result = self.market_api.get_history_trades(
                            instId=symbol,  # 交易对，如BTC-USDT
                            type=2,
                            limit=str(limit),  # 每次最大返回100条
                            after=str(after)  # 获取更早的数据
                        )
                        if result:
                            break
                    except Exception as e:
                        logger.error(f"请求出错: {e}")
                        count += 1
                        if count > 3:
                            break
                        time.sleep(3)
                if result["code"] != "0":
                    print(f"Error: {result['msg']}")
                    break
                
                trades = result["data"]
                if not trades:
                    break

                from_time = int(trades[-1]["ts"])
                to_time = int(trades[0]["ts"])
                from_date_time = timestamp_to_datetime(from_time)
                to_date_time = timestamp_to_datetime(to_time)

                logger.info(f"获得交易数据，最早时间: {from_date_time}， 最近时间: {to_date_time}")
                        
                df = pd.DataFrame(trades)
                # 过滤时间范围
                df["ts"] = df["ts"].astype(int)
                df = df[(df["ts"] >= start_ts) & (df["ts"] <= end_ts)]
                # set sz, px 为float
                df["sz"] = df["sz"].astype(float)
                df["px"] = df["px"].astype(float)
                # 将instId重命名为symbol
                df.rename(columns={"instId": "symbol"}, inplace=True)
                df["date_time"] = df["ts"].apply(lambda x: timestamp_to_datetime(x))
                df["tradeId"] = df["tradeId"].astype(str)
                df["create_time"] = get_current_date_time()
                df = df[["symbol", "ts", "date_time", "tradeId", "side", "sz", "px", "create_time"]]

                self.db_trade_data.insert_data_to_mysql(df)
                all_trades.append(df)
                # 检查最近时间戳是否超出范围
                
                if from_time <= start_ts:
                    break
                    
                after = from_time - 1  # 更新after，继续获取更早的数据
                time.sleep(0.5)
            
            if len(all_trades) > 0:
                # 转换为DataFrame
                final_df = pd.concat(all_trades)
                if final_df.empty:
                    print("No trades found in the specified time range.")
                    return None
                else:
                    return final_df
            else:
                return None
        except Exception as e:
            logger.error(f"获取历史交易数据失败: {e}")
            return None