"""Tests for gate_verdict aggregator — pure function, no DB."""

from app.services.site_finder.gate_verdict import compute_gate_verdict, is_residential_zone

# ── is_residential_zone unit tests ────────────────────────────────────────────


def test_residential_zone_code_zh2():
    assert is_residential_zone("Ж-2", None) is True


def test_residential_zone_code_zh5():
    assert is_residential_zone("Ж5", None) is True


def test_residential_zone_name_fallback():
    assert is_residential_zone(None, "Жилая зона смешанной застройки") is True


def test_non_residential_zone_code():
    assert is_residential_zone("П-1", "Производственная П-1") is False


def test_non_residential_zone_recreation():
    assert is_residential_zone("Р-2", "Рекреационная Р-2") is False


# ── compute_gate_verdict ──────────────────────────────────────────────────────


def test_no_dump_returns_unknown():
    """Если nspd_dump отсутствует или available=False → unknown + no_data."""
    verdict = compute_gate_verdict(None, None, None, None)
    assert verdict["can_build_mkd"] == "unknown"
    assert verdict["source"] == "no_data"
    assert verdict["verdict_label"] == "Нужна проверка"
    assert any(w["code"] == "NO_NSPD_DUMP" for w in verdict["warnings"])
    assert verdict["checks_performed"] == []


def test_no_dump_available_false():
    verdict = compute_gate_verdict(None, None, None, {"available": False})
    assert verdict["can_build_mkd"] == "unknown"
    assert verdict["source"] == "no_data"


def test_residential_zone_no_overlaps_can_build():
    """Жилая зона + нет ЗОУИТ + есть сети → Можно."""
    nspd_zoning = {"zone_code": "Ж-2", "zone_name": "Жилая зона Ж-2"}
    verdict = compute_gate_verdict(nspd_zoning, [], [{"name": "ТП-5"}], {"available": True})
    assert verdict["can_build_mkd"] is True
    assert verdict["verdict_label"] == "Можно"
    assert verdict["blockers"] == []
    assert verdict["source"] == "nspd_dump"


def test_production_zone_blocks():
    """Производственная зона → blocker PZZ_NOT_RESIDENTIAL → Нельзя."""
    nspd_zoning = {"zone_code": "П-1", "zone_name": "Производственная П-1"}
    verdict = compute_gate_verdict(nspd_zoning, [], [], {"available": True})
    assert verdict["can_build_mkd"] is False
    assert verdict["verdict_label"] == "Нельзя"
    assert any(b["code"] == "PZZ_NOT_RESIDENTIAL" for b in verdict["blockers"])


def test_zouit_subcategory_17_blocks():
    """ЗОУИТ subcategory=17 (охранная зона ЛЭП) блокирует даже жилую зону."""
    nspd_zoning = {"zone_code": "Ж-3", "zone_name": "Жилая"}
    overlaps = [{"subcategory": 17, "name": "ЛЭП 110кВ", "layer": "37578"}]
    verdict = compute_gate_verdict(nspd_zoning, overlaps, [], {"available": True})
    assert verdict["can_build_mkd"] is False
    assert any("ZOUIT_OVERLAP_SUB17" == b["code"] for b in verdict["blockers"])
    assert "ЛЭП 110кВ" in verdict["blockers"][0]["detail"]


def test_zouit_non_blocker_subcategory_is_warning():
    """ЗОУИТ с subcategory != 17 → warning, не blocker."""
    nspd_zoning = {"zone_code": "Ж-2", "zone_name": "Жилая"}
    overlaps = [{"subcategory": 5, "name": "Придорожная полоса", "layer": "12345"}]
    verdict = compute_gate_verdict(nspd_zoning, overlaps, [{"name": "ТП-1"}], {"available": True})
    assert verdict["can_build_mkd"] is True
    assert verdict["verdict_label"] == "С ограничениями"
    assert any("ZOUIT_SUB5" == w["code"] for w in verdict["warnings"])
    assert verdict["blockers"] == []


def test_no_engineering_warning_not_blocker():
    """Отсутствие инженерных сетей в 200м — предупреждение, не блокер."""
    nspd_zoning = {"zone_code": "Ж-2", "zone_name": "Жилая"}
    verdict = compute_gate_verdict(nspd_zoning, [], [], {"available": True})
    assert verdict["can_build_mkd"] is True  # warnings не блокируют
    assert any(w["code"] == "NO_ENGINEERING_NEARBY" for w in verdict["warnings"])
    assert verdict["blockers"] == []


def test_stale_dump_marks_source_partial():
    """stale=True → source='nspd_dump_partial'."""
    nspd_zoning = {"zone_code": "Ж-1", "zone_name": "Жилая"}
    dump = {"available": True, "stale": True}
    verdict = compute_gate_verdict(nspd_zoning, [], [{"name": "ТП-3"}], dump)
    assert verdict["source"] == "nspd_dump_partial"


def test_checks_performed_list():
    """checks_performed содержит все 3 проверки при наличии данных."""
    nspd_zoning = {"zone_code": "Ж-1", "zone_name": "Жилая"}
    verdict = compute_gate_verdict(nspd_zoning, [], [], {"available": True})
    assert len(verdict["checks_performed"]) == 3
    assert "ПЗЗ зональность" in verdict["checks_performed"]
    assert "ЗОУИТ пересечения" in verdict["checks_performed"]


def test_pzz_unknown_warning_when_no_zoning():
    """Если nspd_zoning=None при наличии dump — PZZ_UNKNOWN warning."""
    verdict = compute_gate_verdict(None, [], [{"name": "ТП-1"}], {"available": True})
    assert any(w["code"] == "PZZ_UNKNOWN" for w in verdict["warnings"])
    assert verdict["can_build_mkd"] is True