from __future__ import annotations
import time
from typing import Dict, Any

class SimulatedVenueAdapter:
    """A simple simulated venue adapter that emits synthetic data."""
    def __init__(self, venue_id: str = "venue-1"):
        self.venue_id = venue_id
        self._start = time.time()

    def get_latest_signal(self) -> Dict[str, Any]:
        t = time.time() - self._start
        price = 50.0 + (t * 0.3) + ((hash(self.venue_id) & 0xFFFF) * 0.00007)
        return {
            "venue": self.venue_id,
            "price": round(price, 4),
            "ts": time.time(),
        }