"""Unit tests for financial feature calculations."""
import pytest

from libs.oracle_client.models import FinancialDataResponse, FinancialPeriod

TWO_PERIOD_RESPONSE = FinancialDataResponse(
    ticker="AAPL",
    periods=[
        FinancialPeriod(
            period="2026-Q1",
            period_end="2025-12-28",
            revenue=124_300_000_000,
            net_income=36_000_000_000,
            eps=2.34,
            gross_margin=0.472,
            operating_margin=0.315,
        ),
        FinancialPeriod(
            period="2025-Q4",
            period_end="2025-09-27",
            revenue=119_600_000_000,
            net_income=34_900_000_000,
            eps=2.26,
            gross_margin=0.461,
            operating_margin=0.308,
        ),
    ],
)


def test_compute_financial_features_latest_values():
    from libs.features.financial_features import compute_financial_features

    features = compute_financial_features(TWO_PERIOD_RESPONSE)

    assert features["latest_eps"] == pytest.approx(2.34)
    assert features["latest_gross_margin"] == pytest.approx(0.472)
    assert features["latest_operating_margin"] == pytest.approx(0.315)


def test_eps_growth_qoq():
    from libs.features.financial_features import compute_financial_features

    features = compute_financial_features(TWO_PERIOD_RESPONSE)

    expected = (2.34 - 2.26) / abs(2.26)
    assert features["eps_growth_qoq"] == pytest.approx(expected)


def test_revenue_growth_qoq():
    from libs.features.financial_features import compute_financial_features

    features = compute_financial_features(TWO_PERIOD_RESPONSE)

    expected = (124_300_000_000 - 119_600_000_000) / 119_600_000_000
    assert features["revenue_growth_qoq"] == pytest.approx(expected)


def test_periods_sorted_by_period_end_descending():
    from libs.features.financial_features import compute_financial_features

    # Provide periods out of chronological order; latest should still be picked
    response = FinancialDataResponse(
        ticker="AAPL",
        periods=[
            FinancialPeriod(period="2025-Q4", period_end="2025-09-27", eps=2.26),
            FinancialPeriod(period="2026-Q1", period_end="2025-12-28", eps=2.34),
        ],
    )
    features = compute_financial_features(response)
    assert features["latest_eps"] == pytest.approx(2.34)


def test_single_period_no_growth_fields():
    from libs.features.financial_features import compute_financial_features

    response = FinancialDataResponse(
        ticker="AAPL",
        periods=[
            FinancialPeriod(
                period="2026-Q1", period_end="2025-12-28", eps=2.34, gross_margin=0.472
            )
        ],
    )
    features = compute_financial_features(response)

    assert features["latest_eps"] == pytest.approx(2.34)
    assert features["eps_growth_qoq"] is None
    assert features["revenue_growth_qoq"] is None


def test_empty_periods_returns_empty_dict():
    from libs.features.financial_features import compute_financial_features

    response = FinancialDataResponse(ticker="AAPL", periods=[])
    assert compute_financial_features(response) == {}


def test_none_eps_in_prior_skips_growth():
    from libs.features.financial_features import compute_financial_features

    response = FinancialDataResponse(
        ticker="AAPL",
        periods=[
            FinancialPeriod(period="2026-Q1", period_end="2025-12-28", eps=2.34),
            FinancialPeriod(period="2025-Q4", period_end="2025-09-27", eps=None),
        ],
    )
    features = compute_financial_features(response)
    assert features["eps_growth_qoq"] is None