"""BUG-1060: Double Transit PAC D9 targets check the D9 signs their labels name.

Real engine runs on the three public AA charts of the evidence-card research
(`consult_evidence_card_lib.load_public_charts`, raman ayanamsa, mean nodes,
reference date fixed in the library). The D1 and Chandra Lagna layers are
compared with a golden captured from the engine before the fix (base
5671039a); the fix only touches the D9 layer.

Regenerate the golden (only when the D1 / CL layer is meant to change):

    PYTHONHASHSEED=0 python tests/test_double_transit_d9_targets.py --capture
"""

from __future__ import annotations

import json
import sys
from pathlib import Path
from types import SimpleNamespace

import pytest

ROOT = Path(__file__).resolve().parents[1]
for path in (ROOT, ROOT / "scripts", ROOT / "scripts" / "research"):
    if str(path) not in sys.path:
        sys.path.insert(0, str(path))

import jyotish_engine as engine  # noqa: E402
from consult_evidence_card_lib import load_public_charts  # noqa: E402

GOLDEN = ROOT / "tests" / "fixtures" / "double_transit_d1_cl_golden.json"
HOUSES = range(1, 13)


def _args(chart: dict, house: int) -> SimpleNamespace:
    body = chart["body"]
    return SimpleNamespace(
        year=body["year"], month=body["month"], day=body["day"], hour=body["hour"], minute=body["minute"],
        second=0, lat=body["lat"], lon=body["lon"], tz=float(body["tz"]), node_mode=body["node_mode"],
        ayanamsa=body["ayanamsa"], date=body["today"], house=house,
    )


def _natal(chart: dict):
    natal_chart, asc_idx, _, _ = engine._compute_chart_from_args(_args(chart, 7))
    ascendant = natal_chart["ascendant"]
    asc_deg = ascendant.get("lon", ascendant.get("degree", 0))
    return natal_chart["planets"], asc_idx, asc_deg


def _d9_targets(chart: dict, house: int):
    natal, asc_idx, asc_deg = _natal(chart)
    event_lord = engine.SIGN_LORDS[engine.SIGNS[(asc_idx + house - 1) % 12]]
    ll_name = engine.SIGN_LORDS[engine.SIGNS[asc_idx]]
    return engine._double_transit_d9_targets(asc_deg, natal, house, event_lord, ll_name), natal, asc_deg


def _d1_cl_layers() -> dict:
    out = {}
    for chart in load_public_charts(ROOT):
        for house in HOUSES:
            result = engine.cmd_double_transit_pac(_args(chart, house))
            stats = result["stats"]
            out[f"{chart['id']}|{house}"] = {
                "d1": result["d1"],
                "cl": result["cl"],
                "d1_cl_double_transit": [row for row in result["double_transit"] if row["layer"] in ("D1", "CL")],
                "stats": {key: value for key, value in stats.items() if key.startswith(("d1_", "cl_")) or key == "chandra_lagna"},
            }
    return out


@pytest.fixture(scope="module")
def charts() -> list[dict]:
    return load_public_charts(ROOT)


def test_quick_gate_runs_this_file() -> None:
    import run_quality_gate

    assert "tests/test_double_transit_d9_targets.py" in run_quality_gate.CORE_PYTEST_TARGETS


def test_d9_house_target_is_the_d9_house_sign_not_the_d9_lagna(charts) -> None:
    for chart in charts:
        for house in range(2, 13):
            (d9_asc_idx, targets), _, _ = _d9_targets(chart, house)
            house_si = (d9_asc_idx + house - 1) % 12
            label = f"D9_{house}宫({engine.SIGNS[house_si]})"
            assert targets[label] == house_si * 30 + 15, (chart["id"], house)
            assert targets[label] != d9_asc_idx * 30 + 15, (chart["id"], house)


def test_d9_house_1_target_is_still_the_d9_lagna(charts) -> None:
    for chart in charts:
        (d9_asc_idx, targets), _, asc_deg = _d9_targets(chart, 1)
        assert d9_asc_idx == engine._navamsa_idx(asc_deg)
        assert targets[f"D9_1宫({engine.SIGNS[d9_asc_idx]})"] == d9_asc_idx * 30 + 15


def test_d9_lord_targets_are_navamsa_signs(charts) -> None:
    for chart in charts:
        for house in HOUSES:
            (d9_asc_idx, targets), natal, _ = _d9_targets(chart, house)
            d9_lord = engine.SIGN_LORDS[engine.SIGNS[(d9_asc_idx + house - 1) % 12]]
            lord_si = engine._navamsa_idx(natal[d9_lord]["degree"])
            # Before BUG-1060 this target was the lord's D1 degree.
            assert targets[f"D9_{d9_lord}(宫主)"] == lord_si * 30 + 15, (chart["id"], house)


def test_command_checks_the_helper_targets_in_the_d9_frame(charts, monkeypatch) -> None:
    calls = []
    original = engine._check_pac

    def recording(planet_name, planet_lon, target_lon, asc_idx):
        calls.append((planet_name, target_lon, asc_idx))
        return original(planet_name, planet_lon, target_lon, asc_idx)

    monkeypatch.setattr(engine, "_check_pac", recording)
    for chart in charts:
        for house in (1, 7, 10):
            (d9_asc_idx, targets), _, _ = _d9_targets(chart, house)
            calls.clear()
            engine.cmd_double_transit_pac(_args(chart, house))
            for planet in ("Jupiter", "Saturn"):
                seen = [lon for name, lon, idx in calls if name == planet]
                # d1 (4 targets) → d9 → cl (2), in insertion order, per transit planet; for house 1
                # the D1 house lord is the lagna lord, so the D9 layer has 3 distinct targets.
                assert seen[4:4 + len(targets)] == list(targets.values()), (chart["id"], house, planet)
                assert {idx for name, _, idx in calls if name == planet} >= {d9_asc_idx}


def test_public_chart_seventh_house_d9_row(charts) -> None:
    """The BUG-1060 reproduction: Saturn's 10th aspect was on the D9 lagna, not on D9 house 7."""
    chart = next(item for item in charts if item["id"] == "steve_jobs")
    result = engine.cmd_double_transit_pac(_args(chart, 7))
    assert result["stats"]["d9_ascendant"] == "Capricorn"
    label = "D9_7宫(Cancer)"
    assert label not in result["d9"]["saturn"]
    assert result["d9"]["jupiter"][label] == [{"type": "Position", "desc": "同宫(7宫)"}]
    assert "D9_Moon(宫主)" not in result["d9"]["saturn"]


def test_d1_and_chandra_lagna_layers_match_the_pre_fix_golden() -> None:
    golden = json.loads(GOLDEN.read_text(encoding="utf-8"))
    assert golden["provenance"]["charts"] == [chart["id"] for chart in load_public_charts(ROOT)]
    assert json.dumps(_d1_cl_layers(), ensure_ascii=False, sort_keys=True) == json.dumps(
        golden["layers"], ensure_ascii=False, sort_keys=True,
    )


def _capture() -> None:
    import os

    if os.environ.get("PYTHONHASHSEED") != "0":
        raise SystemExit("Set PYTHONHASHSEED=0 before starting this process (ERR-111).")
    charts = load_public_charts(ROOT)
    payload = {
        "provenance": {
            "generator": "tests/test_double_transit_d9_targets.py --capture (jyotish_engine.cmd_double_transit_pac)",
            "charts": [chart["id"] for chart in charts],
            "reference_date": charts[0]["body"]["today"],
            "ayanamsa": charts[0]["body"]["ayanamsa"],
            "node_mode": charts[0]["body"]["node_mode"],
            "houses": list(HOUSES),
            "note": "D1 / Chandra Lagna layers only; captured before the BUG-1060 D9 fix and unchanged by it.",
        },
        "layers": _d1_cl_layers(),
    }
    GOLDEN.parent.mkdir(parents=True, exist_ok=True)
    GOLDEN.write_text(json.dumps(payload, ensure_ascii=False, sort_keys=True, indent=1) + "\n", encoding="utf-8")
    print(f"wrote {GOLDEN.relative_to(ROOT)}")


if __name__ == "__main__" and "--capture" in sys.argv:
    _capture()