"""Golden tests for SECTOR_EXPOSURE_GRAPH_V1 / LEADER_LIFECYCLE_GATE_V1
(governance/todo/v8_9_p1_adoption_plan.yaml P1-A.5).

Maps to v8.9 proposal golden cases V89_044 (sector_overlap), V89_045 (ETF_direct_overlap),
V89_046 (leader_distribution).
"""
from __future__ import annotations

import importlib.util
from pathlib import Path

ROOT = Path(__file__).resolve().parents[3]
MODULE_PATH = ROOT / "tools" / "build_sector_exposure_graph_v1.py"


def _load_module():
    spec = importlib.util.spec_from_file_location("build_sector_exposure_graph_v1", MODULE_PATH)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


def test_v89_044_etf_lookthrough_adds_to_direct_weight() -> None:
    mod = _load_module()
    position = {
        "direct_weight_pct": 20.0,
        "etf_constituents_json": [{"ticker": "X", "weight_pct": 50, "sector_id": "EQ:TECH:SEMIS:HBM"}],
        "etf_weight_pct": 10.0,
        "sector_id": "EQ:TECH:SEMIS:HBM",
    }
    result = mod.sector_exposure(position)
    assert result["sector_family_total_pct"] == 25.0
    assert result["gate"] == "PASS"


def test_v89_045_missing_constituents_blocks_not_zero_estimate() -> None:
    mod = _load_module()
    result = mod.sector_exposure({"direct_weight_pct": 10.0, "sector_id": "EQ:TECH:SEMIS:HBM"})
    assert result["gate"] == "ETF_BUY_BLOCKED"
    assert result["sector_family_total_pct"] is None


def test_v89_046_captain_distribution_break_demotes_immediately() -> None:
    mod = _load_module()
    result = mod.evaluate_leader_role(
        {
            "current_role": "CAPTAIN",
            "above_ma60_or_reclaim_confirmed": False,
            "institutional_flow_status": "distribution",
            "earnings_revision_status": "neutral",
            "relative_strength_leads_sector": False,
            "volume_quality_confirmed": False,
        }
    )
    assert result["leader_role"] == "DISTRIBUTION_RISK"
    assert result["role_changed"] is True


def test_missing_role_inputs_keeps_current_role_not_arbitrary() -> None:
    mod = _load_module()
    result = mod.evaluate_leader_role({"current_role": "ENABLER"})
    assert result["leader_role"] == "ENABLER"
    assert result["role_transition_reason"] == "DATA_MISSING"