"""Focused tests for the strict approved-change clone receipt."""

from __future__ import annotations

import sys
from pathlib import Path

import pytest

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "scripts"))

import run_approve_claim_clone_canary as canary  # noqa: E402


def _passing_result(expected_rows: dict, expected_deltas: dict) -> dict:
    proposal_id = "aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa"
    return {
        "status": "pass",
        "fixture_ids": {"proposal_id": proposal_id},
        "apply_transition": {
            "applied_readback": {
                "id": proposal_id,
                "status": "applied",
                "applied_at": "2026-07-12 12:00:00+00",
                "applied_by_handle": "kb-apply",
            }
        },
        "row_readback": expected_rows,
        "clone_counts_before_apply": {key: 0 for key in expected_deltas},
        "clone_counts_after_apply": expected_deltas,
        "clone_apply_table_deltas": expected_deltas,
        "clone_dropped": True,
        "cleanup_readback": {"leftover_clone_database_count": 0},
        "source_database_mutated": False,
        "checks": {"conflict_transaction_rolled_back_exactly": True},
    }


def test_service_state_records_unavailable_systemctl(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.setattr(
        canary,
        "_run",
        lambda *_args, **_kwargs: (_ for _ in ()).throw(FileNotFoundError()),
    )

    assert canary._service_state("unused.service") == {
        "available": False,
        "returncode": 127,
        "reason": "systemctl_unavailable",
    }


def test_strict_receipt_requires_exact_ids_counts_applied_at_and_cleanup() -> None:
    expected_rows = canary._expected_bundle_rows(canary.build_fixture("unit")["apply_payload"])
    expected_deltas = canary._expected_table_deltas(expected_rows)
    result = _passing_result(expected_rows, expected_deltas)

    receipt = canary._strict_receipt(result, expected_rows, expected_deltas)

    assert receipt["pass"] is True
    assert receipt["proposal"]["status"] == "applied"
    assert receipt["proposal"]["applied_at"]
    assert receipt["canonical_row_keys"]["actual"] == receipt["canonical_row_keys"]["expected"]
    assert receipt["row_counts"]["actual_deltas"] == expected_deltas
    assert receipt["rollback_cleanup"]["clone_database_removed"] is True

    result["apply_transition"]["applied_readback"]["applied_at"] = None
    result["row_readback"] = {**expected_rows, "claims": []}
    result["clone_apply_table_deltas"] = {**expected_deltas, "public.claims": 0}
    result["clone_dropped"] = False

    failed = canary._strict_receipt(result, expected_rows, expected_deltas)

    assert failed["pass"] is False
    assert failed["checks"]["proposal_applied_at_present"] is False
    assert failed["checks"]["canonical_row_keys_exact"] is False
    assert failed["checks"]["table_deltas_exact"] is False
    assert failed["checks"]["clone_database_removed"] is False