from __future__ import annotations

from dataclasses import dataclass
from datetime import datetime

from ..core import LocalArbProblem, SharedSignals


@dataclass
class MockPriceFeedAdapter:
    version: int = 1

    def emit(self) -> tuple[LocalArbProblem, SharedSignals]:
        # Minimal synthetic data for MVP
        local = LocalArbProblem(
            id="lp-01",
            venue="NYSE",
            asset_pair="AAPL/GOOG",
            target_misprice=0.5,
            max_exposure=1000000.0,
            latency_budget_ms=50,
        )
        signals = SharedSignals(
            version=self.version,
            price_delta=0.1,
            cross_venue_corr=0.8,
            liquidity=1000000.0,
        )
        return local, signals