# app/src/integrations/exchange/market_cache.py

from __future__ import annotations

from dataclasses import dataclass
from datetime import datetime
from zoneinfo import ZoneInfo

from src.core.config import load_settings


@dataclass(slots=True)
class MarketPriceSnapshot:
    symbol: str
    price: float
    bid_price: float | None
    ask_price: float | None
    updated_at: str
    source: str = "market-cache"


class MarketPriceCache:
    _prices: dict[str, MarketPriceSnapshot] = {}

    # сохранить последнюю цену
    @classmethod
    def set_price(
        cls,
        *,
        symbol: str,
        price: float,
        bid_price: float | None = None,
        ask_price: float | None = None,
        updated_at: str | None = None,
        source: str = "market-polling",
    ) -> None:
        settings = load_settings()

        if updated_at is None:
            updated_at = datetime.now(ZoneInfo(settings.tz)).strftime("%d.%m.%Y %H:%M:%S")

        cls._prices[symbol.upper()] = MarketPriceSnapshot(
            symbol=symbol.upper(),
            price=price,
            bid_price=bid_price,
            ask_price=ask_price,
            updated_at=updated_at,
            source=source,
        )

    # получить последнюю цену
    @classmethod
    def get_price(cls, symbol: str) -> MarketPriceSnapshot | None:
        return cls._prices.get(symbol.upper())