"""Tests for IIHS and US NCAP scoring."""

import pytest

from impakt.criteria.base import CriterionResult
from impakt.protocol.iihs import IIHS, evaluate as iihs_evaluate
from impakt.protocol.us_ncap import USNCAP, evaluate as us_evaluate


@pytest.fixture
def sample_criteria():
    return {
        "HIC15": CriterionResult(criterion="HIC15", value=400, body_region="Head"),
        "Nij": CriterionResult(criterion="Nij", value=0.4, body_region="Neck"),
        "Chest Deflection": CriterionResult(
            criterion="Chest Deflection", value=35, unit="mm", body_region="Chest"
        ),
        "Femur Load Left": CriterionResult(
            criterion="Femur Load Left", value=4.0, unit="kN", body_region="Femur Left"
        ),
        "Femur Load Right": CriterionResult(
            criterion="Femur Load Right", value=4.5, unit="kN", body_region="Femur Right"
        ),
    }


class TestIIHS:
    def test_good_results(self, sample_criteria):
        result = iihs_evaluate(sample_criteria)
        assert result.protocol == "IIHS"
        assert result.overall_rating in ("GOOD", "ACCEPTABLE", "MARGINAL", "POOR")

    def test_region_scores(self, sample_criteria):
        result = iihs_evaluate(sample_criteria)
        assert len(result.region_scores) > 0
        for rs in result.region_scores:
            assert rs.rating is not None

    def test_poor_hic(self):
        result = iihs_evaluate(
            {
                "HIC15": CriterionResult(criterion="HIC15", value=1500, body_region="Head"),
            }
        )
        assert result.overall_rating == "POOR"

    def test_summary(self, sample_criteria):
        result = iihs_evaluate(sample_criteria)
        summary = result.summary()
        assert "IIHS" in summary


class TestUSNCAP:
    def test_basic(self, sample_criteria):
        result = us_evaluate(sample_criteria)
        assert result.protocol == "US NCAP"
        assert result.stars is not None
        assert 1 <= result.stars <= 5

    def test_injury_probabilities(self, sample_criteria):
        result = us_evaluate(sample_criteria)
        assert "combined_injury_probability" in result.details
        p = result.details["combined_injury_probability"]
        assert 0.0 <= p <= 1.0

    def test_region_scores(self, sample_criteria):
        result = us_evaluate(sample_criteria)
        assert len(result.region_scores) > 0