from __future__ import annotations
import time

from deltaforge_mvp.core import Asset, MarketSignal


def generate_signal(symbol: str, price: float, timestamp: float | None = None) -> MarketSignal:
    """Tiny equity feed adapter: returns a MarketSignal for an equity asset."""
    a = Asset(type="equity", symbol=symbol)
    ts = timestamp if timestamp is not None else time.time()
    return MarketSignal(asset=a, price=price, volatility=0.2, liquidity=1.0, timestamp=ts)


class EquityFeedAdapter:
    """Lightweight adapter wrapper to expose a stable interface used by tests."""
    def __init__(self, name: str = "equity"):
        self.name = name

    def get_signal(self, symbol: str, price: float, timestamp: float | None = None) -> MarketSignal:
        return generate_signal(symbol, price, timestamp)