"""Minimal strategy orchestration helpers for first-stage multi-strategy rollout."""

from __future__ import annotations

from app.core.strategy_contract import StrategySignal


def arbitrate_strategy_signals(signals: list[StrategySignal]) -> list[StrategySignal]:
    """Deduplicate same-symbol same-direction signals by confidence.

    First stage deliberately avoids complex voting. Opposite directions are
    left to future long/short architecture; current system is long-only.
    """
    winners: dict[tuple[str, str], StrategySignal] = {}
    for signal in signals or []:
        key = (str(signal.symbol or "").upper(), str(signal.direction or "long").lower())
        existing = winners.get(key)
        if existing is None or float(signal.confidence or 0) > float(existing.confidence or 0):
            winners[key] = signal
    return list(winners.values())