from typing import Dict, Any, Optional, List


def early_warning_system_model(
    signals: List[str],
    target_event: str = "crisis_escalation",
    model_type: str = "ensemble",
    lead_time_days: int = 14
) -> Dict[str, Any]:
    """
    Early Warning System Modeling (placeholder intent)

    Parameters
    ----------
    signals : list[str]
        Input signals (market, conflict, weather, mobility, health alerts).
    target_event : str
        Event to predict (e.g., crisis_escalation, outbreak, displacement_surge).
    model_type : str
        e.g., "ensemble", "bayesian", "lstm".
    lead_time_days : int
        Desired lead time for alerts.
    """
    return {
        "type": "ml_early_warning_system",
        "model_type": model_type,
        "signals_count": len(signals),
        "target_event": target_event,
        "lead_time_days": lead_time_days,
        "preview": {"will_train": True, "expected_outputs": ["alert_scores", "thresholds", "precision_recall"]},
    }
