"""
Real correctness tests for core.decisions — the evidence-label -> recommendation
mapping and the DecisionItem dataclass.
"""
from datetime import date

from core.decisions import DecisionItem, recommendation_for_issue


def _ev(label):
    return {"label": label, "summary": "", "truth_type": "hard_truth", "confidence": 0.85}


def test_inventory_drop_maps_to_replenishment_recommendation():
    rec = recommendation_for_issue("branch", [_ev("inventory_availability_drop")])
    assert "inventory" in rec.lower()
    assert "7 days" in rec


def test_backlog_increase_maps_to_warehouse_capacity_review():
    rec = recommendation_for_issue("warehouse", [_ev("backlog_increase")])
    assert "warehouse capacity" in rec.lower()
    assert "72 hours" in rec


def test_sla_response_increase_maps_to_service_team_review():
    rec = recommendation_for_issue("team", [_ev("sla_response_increase")])
    assert "service team" in rec.lower()


def test_unknown_evidence_falls_back_to_generic_owner_assignment():
    rec = recommendation_for_issue("process", [_ev("some_unmapped_label")])
    assert "operations owner" in rec.lower()


def test_empty_evidence_falls_back_to_generic_recommendation():
    rec = recommendation_for_issue("branch", [])
    assert "operations owner" in rec.lower()


def test_first_matching_label_wins_when_multiple_present():
    # inventory check is evaluated before backlog in the current policy
    rec = recommendation_for_issue(
        "warehouse", [_ev("inventory_availability_drop"), _ev("backlog_increase")]
    )
    assert "inventory" in rec.lower()


def test_decision_item_constructs_with_defaults():
    item = DecisionItem(
        decision_id="d1",
        issue_id="i1",
        entity_id="route_14",
        created_at=date(2026, 5, 15),
        title="Review route_14 drift",
        urgency=0.8,
        recommendation="...",
        confidence=0.84,
    )
    assert item.evidence == []
    assert item.status == "open"