"""The bundle the DEFAULT build produces, pinned where a regression goes red.

`tests/test_okf_consume.py` pinned hit@8 against the Arm B bundle alone -- the
configuration `okf build` stopped emitting on 2026-09-08. A published number
measured on a bundle nobody produces is a number that cannot regress, so the
guarantee it looks like was never held by anything.

This file pins the CURRENT default: `--outline-run 3 --table-grid --unit-fold
--drop-wrapped-outline --outline-gate`, the configuration round 6 moved the
default to on 2026-09-09 after measuring hit@8 on exactly this bundle.

The gold set is LOCAL-ONLY and stays that way: no question and no
`gold_document` is reproduced here, and a row is named by its INDEX, the way
`docs/2026-09-07-okf-konsumskill-maaling.md` already names them.

The bundle itself is a build artefact, not a fixture: it is 810 files of a
consumer's corpus and this repository is public. Absent, these tests SKIP with
the command that rebuilds it -- "not measured", never zero.
"""

from __future__ import annotations

import json
import sys
from pathlib import Path

import pytest

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

import okf_consume  # noqa: E402
import okf_consume_measure  # noqa: E402

#: Built by:
#:   okf build <corpus>/K2/trinn1 \
#:       --bundle ~/corpora/okf-telling-20260829/K2-bundle-default-20260909 \
#:       --bundle-id k2-trinn1-20260903 --okf-version 0.2
#: with no arm flag at all -- the package default, which is the point.
DEFAULT_BUNDLE = Path.home() / "corpora" / "okf-telling-20260829" / "K2-bundle-default-20260909"
GOLD_SET = PROJECT_ROOT / ".claude/projects/2026-09-07-okf-consume-prepass/hit-at-k-questions.json"

requires_default_bundle = pytest.mark.skipif(
    not DEFAULT_BUNDLE.is_dir() or not GOLD_SET.is_file(),
    reason=(
        f"the default-configuration K2 bundle is not present at {DEFAULT_BUNDLE}. "
        "NOT MEASURED, not zero: rebuild it with `okf build <corpus>/K2/trinn1 "
        "--bundle <that path> --bundle-id k2-trinn1-20260903 --okf-version 0.2`"
    ),
)

#: Measured 2026-09-09 on the bundle above.
EXPECTED_CONCEPTS = 425
EXPECTED_HITS = 5
#: Rank per question INDEX, `None` for the row that misses on every bundle and
#: every configuration measured so far. The identity is the index; the question
#: stays in the local-only gold set.
EXPECTED_RANKS = (1, 1, 1, 1, 1, None)


@requires_default_bundle
def test_the_default_bundle_holds_its_concept_count() -> None:
    assert len(list(okf_consume.enumerate_concepts(DEFAULT_BUNDLE))) == EXPECTED_CONCEPTS


@requires_default_bundle
def test_hit_at_eight_holds_rank_one_on_every_row_it_held() -> None:
    """The acceptance criterion round 6's default move had to clear.

    Not the hit COUNT alone: the count survived a configuration that lost a
    row from rank 1 to rank 2, which is exactly how the previous round's
    regression hid. The rank per row is the pin.
    """
    questions = json.loads(GOLD_SET.read_text(encoding="utf-8"))["questions"]
    assert len(questions) == len(EXPECTED_RANKS), "the gold set changed shape"
    ranks = []
    for entry in questions:
        payload = okf_consume.build_payload(DEFAULT_BUNDLE, question=entry["question"])
        excerpts = payload["excerpts"]
        assert isinstance(excerpts, list)
        ranks.append(okf_consume_measure.hit_rank(excerpts, entry["gold_document"]))
    assert tuple(ranks) == EXPECTED_RANKS, f"hit@8 ranks moved: {ranks}"
    assert sum(rank is not None for rank in ranks) == EXPECTED_HITS


@requires_default_bundle
def test_the_bundle_declares_the_identity_the_reader_needs() -> None:
    """Whatever else moves, the bundle stays one the reading direction opens."""
    assert okf_consume.root_bundle_id_of(DEFAULT_BUNDLE) == "k2-trinn1-20260903"