"""Financial feature calculations from Oracle financial data."""
from __future__ import annotations

from typing import Any

from libs.oracle_client.models import FinancialDataResponse


def compute_financial_features(response: FinancialDataResponse) -> dict[str, Any]:
    """Compute financial features from quarterly period data.

    Returns dict with latest-quarter metrics and QoQ growth rates.
    Returns empty dict if no period data is available.
    """
    periods = sorted(response.periods, key=lambda p: p.period_end, reverse=True)
    if not periods:
        return {}

    latest = periods[0]
    features: dict[str, Any] = {
        "latest_eps": latest.eps,
        "latest_gross_margin": latest.gross_margin,
        "latest_operating_margin": latest.operating_margin,
        "eps_growth_qoq": None,
        "revenue_growth_qoq": None,
    }

    if len(periods) >= 2:
        prior = periods[1]
        if latest.eps is not None and prior.eps is not None and prior.eps != 0:
            features["eps_growth_qoq"] = (latest.eps - prior.eps) / abs(prior.eps)
        if (
            latest.revenue is not None
            and prior.revenue is not None
            and prior.revenue != 0
        ):
            features["revenue_growth_qoq"] = (
                latest.revenue - prior.revenue
            ) / prior.revenue

    return features