"""BUG-1319: KP house occupancy is cusp-to-cusp and must be declared.

Upstream 0337b77f. Natal Bhava Chalit stays on the sandhi midpoint rule.
"""

from __future__ import annotations

import os
import sys

import pytest

SCRIPTS = os.path.join(os.path.dirname(__file__), "..", "scripts")
if SCRIPTS not in sys.path:
    sys.path.insert(0, SCRIPTS)

from bhava_chalit import BhavaChalitCalculator  # noqa: E402
from kp_system import build_kp_report_pack, calc_kp_analysis  # noqa: E402


def test_cusp_to_cusp_differs_from_sandhi_and_default_houses_stay() -> None:
    calc = BhavaChalitCalculator()
    planets = {"Sun": 40.0}
    sandhi = calc.get_bhava_chalit_chart(planets, 15.0, 270.0, "equal")
    explicit = calc.get_bhava_chalit_chart(
        planets, 15.0, 270.0, "equal", house_assignment="sandhi",
    )
    cusp = calc.get_bhava_chalit_chart(
        planets, 15.0, 270.0, "equal", house_assignment="cusp_to_cusp",
    )
    assert sandhi["house_assignment"] == "sandhi"
    assert explicit["planets"]["Sun"]["bhava_house"] == sandhi["planets"]["Sun"]["bhava_house"] == 2
    assert cusp["house_assignment"] == "cusp_to_cusp"
    assert cusp["planets"]["Sun"]["bhava_house"] == 1
    assert cusp["planets"]["Sun"]["bhava_house"] != sandhi["planets"]["Sun"]["bhava_house"]


def test_unknown_house_assignment_is_rejected() -> None:
    calc = BhavaChalitCalculator()
    with pytest.raises(ValueError, match="house_assignment"):
        calc.get_bhava_chalit_chart({"Sun": 10.0}, 15.0, 270.0, "equal", house_assignment="whole")


def test_kp_cusps_require_an_occupancy_basis_and_the_report_names_it() -> None:
    planets = {"Sun": {"sign": "Taurus", "degree": 10.0, "house": 2}}
    cusps = [15.0 + 30.0 * index for index in range(12)]
    with pytest.raises(ValueError, match="house_occupancy_basis"):
        calc_kp_analysis(planets, "Aries", house_cusps=cusps)
    with pytest.raises(ValueError, match="house_occupancy_basis"):
        calc_kp_analysis(planets, "Aries", house_cusps=cusps, house_occupancy_basis="")
    declared = calc_kp_analysis(
        planets, "Aries", house_cusps=cusps, house_occupancy_basis="cusp_to_cusp",
    )
    assert declared["house_occupancy_basis"] == "cusp_to_cusp"
    proxy = calc_kp_analysis(planets, "Aries")
    assert proxy["house_occupancy_basis"] == "whole_sign_proxy"
    markdown = build_kp_report_pack(declared)["exports"]["markdown"]
    assert "House occupancy basis: `cusp_to_cusp`" in markdown