import os
import pickle
import numpy as np
from xgboost import XGBRegressor
from zipfile import ZipFile
from datetime import datetime, timedelta
import pandas as pd
from sklearn.model_selection import train_test_split
from updater import download_binance_monthly_data, download_binance_daily_data
from config import data_base_path, model_file_path

binance_data_path = os.path.join(data_base_path, "binance/futures-klines")
training_price_data_path = os.path.join(data_base_path, "eth_price_data.csv")


def download_data():
    cm_or_um = "um"
    symbols = ["ETHUSDT"]
    intervals = ["10min"]
    years = ["2020", "2021", "2022", "2023", "2024"]
    months = ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"]
    download_path = binance_data_path
    download_binance_monthly_data(
        cm_or_um, symbols, intervals, years, months, download_path
    )
    print(f"Downloaded monthly data to {download_path}.")
    current_datetime = datetime.now()
    current_year = current_datetime.year
    current_month = current_datetime.month
    download_binance_daily_data(
        cm_or_um, symbols, intervals, current_year, current_month, download_path
    )
    print(f"Downloaded daily data to {download_path}.")


def format_data():
    files = sorted([x for x in os.listdir(binance_data_path) if x.endswith(".zip")])

    if len(files) == 0:
        return

    price_df = pd.DataFrame()
    for file in files:
        zip_file_path = os.path.join(binance_data_path, file)
        myzip = ZipFile(zip_file_path)
        with myzip.open(myzip.filelist[0]) as f:
            line = f.readline()
            header = 0 if line.decode("utf-8").startswith("open_time") else None
        df = pd.read_csv(myzip.open(myzip.filelist[0]), header=header).iloc[:, :11]
        df.columns = [
            "start_time",
            "open",
            "high",
            "low",
            "close",
            "volume",
            "end_time",
            "volume_usd",
            "n_trades",
            "taker_volume",
            "taker_volume_usd",
        ]
        df.index = [pd.Timestamp(x + 1, unit="ms") for x in df["end_time"]]
        df.index.name = "date"
        price_df = pd.concat([price_df, df])

    price_df["timestamp"] = price_df.index.map(pd.Timestamp.timestamp)
    price_df["price_diff"] = price_df["close"].diff()
    price_df["volatility"] = (price_df["high"] - price_df["low"]) / price_df["open"]
    price_df["volume"] = price_df["volume"]
    price_df["moving_avg_7"] = price_df["close"].rolling(window=7).mean()
    price_df["moving_avg_30"] = price_df["close"].rolling(window=30).mean()

    # Удаляем строки с NaN значениями
    price_df.dropna(inplace=True)

    # Сохраняем данные
    price_df.sort_index().to_csv(training_price_data_path)


def train_model():
    price_data = pd.read_csv(training_price_data_path)

    # Используем дополнительные признаки
    x = price_data[
        [
            "timestamp",
            "price_diff",
            "volatility",
            "volume",
            "moving_avg_7",
            "moving_avg_30",
        ]
    ]
    y = price_data["close"]

    x_train, x_test, y_train, y_test = train_test_split(
        x, y, test_size=0.2, random_state=0
    )

    # Train the model
    print("Training model...")
    model = XGBRegressor()
    model.fit(x_train, y_train)
    print("Model trained.")

    os.makedirs(os.path.dirname(model_file_path), exist_ok=True)

    with open(model_file_path, "wb") as f:
        pickle.dump(model, f)

    print(f"Trained model saved to {model_file_path}")

    # Optional: Оценка модели
    y_pred = model.predict(x_test)
    print(f"Mean Absolute Error: {np.mean(np.abs(y_test - y_pred))}")


def get_inference_data(token, period):
    """
    Генерирует данные для инференса на основе переданного токена и периода.
    """
    price_data = pd.read_csv(training_price_data_path)

    # Настроить разницу времени в зависимости от периода
    time_delta_map = {
        "1min": timedelta(minutes=1),
        "5min": timedelta(minutes(5)),
        "10min": timedelta(minutes(10)),
        "30min": timedelta(minutes(30)),
        "1h": timedelta(hours=1),
        "1d": timedelta(days=1),
    }

    # Получаем последний таймстамп и вычисляем следующий
    last_timestamp = pd.to_datetime(price_data["timestamp"].iloc[-1], unit="s")
    next_timestamp = last_timestamp + time_delta_map.get(period, timedelta(minutes=10))

    # Используем последние значения признаков
    last_data = price_data.iloc[-1]
    X_new = np.array(
        [
            [
                next_timestamp.timestamp(),
                last_data["price_diff"],
                last_data["volatility"],
                last_data["volume"],
                last_data["moving_avg_7"],
                last_data["moving_avg_30"],
            ]
        ]
    )

    return X_new