"""Signal Engine — timeframe-local status labels only (not tradability)."""

from __future__ import annotations

from crypto_wyckoff.domain_models import EngineResult, WyckoffEvent


class SignalEngine:
    """Maps local Event/Phase into a status label. Decision decides tradability."""

    name = "Signal"
    version = "1.0.0"

    def run(self, event: EngineResult, phase: EngineResult | None = None) -> EngineResult:
        current = event.payload.get("current_event", WyckoffEvent.NONE.value)
        conf = event.confidence
        label = current  # status label mirrors event for V1
        reasons = [f"本地事件标签: {label}"]
        if phase and phase.payload.get("phase"):
            reasons.append(f"本地阶段: {phase.payload.get('phase')}")

        return EngineResult(
            name=self.name,
            version=self.version,
            confidence=conf,
            score=event.score,
            reasons=reasons,
            payload={
                "signal_label": label,
                "current_event": current,
                "phase": (phase.payload.get("phase") if phase else None),
                "active_events": event.payload.get("active_events")
                or event.payload.get("recent_events", []),
            },
        )