"""Door C carries the assets its merged concepts point at (0.10.0).

Measured on 2026-09-17, before this was fixed: importing a bundle built with
`--assets` merged 6 of 6 concepts -- the guard cleared every pointer block as
ordinary body text -- and wrote **no `assets/` directory at all**. Every
`![Tabell 84-2](/assets/...)` in the imported bundle pointed at a file that was
not there.

That is the same defect one door over: a bundle that reads as complete and is
not. Door C's two invariants make the repair obvious rather than a new
mechanism -- a merged concept is written VERBATIM, so its pointer cannot be
rewritten to point somewhere else, and ownership is proven by CONTENT IDENTITY,
which is exactly the rule an asset name already encodes.

WHAT IS NOT CARRIED IS AS IMPORTANT: an asset no merged concept points at stays
behind. A concept the guard refused takes its pictures with it, or the import
would persist bytes the gate never cleared a reader for -- and an orphan in
`assets/` is a file nothing names and nothing retires.
"""

from __future__ import annotations

import warnings
from pathlib import Path

import pytest

from llm_ingestion_okf import cli
from llm_ingestion_okf.assets import ASSETS_DIR, IMAGE_POINTER
from llm_ingestion_okf.importer import import_bundle

FIXTURES = Path(__file__).parent / "fixtures" / "image-inbox"
INGESTED_AT = "2026-09-17T00:00:00Z"


def _source_bundle(tmp_path: Path) -> Path:
    inbox = tmp_path / "inbox"
    (inbox / "graphics").mkdir(parents=True)
    for source in sorted(FIXTURES.rglob("*")):
        if source.is_file():
            (inbox / source.relative_to(FIXTURES)).write_bytes(source.read_bytes())
    bundle = tmp_path / "source-bundle"
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        assert (
            cli.main(
                [
                    "build",
                    str(inbox),
                    "--bundle",
                    str(bundle),
                    "--bundle-id",
                    "asset-import-fixture",
                    "--okf-version",
                    "0.2",
                ]
            )
            == 0
        )
    return bundle


def _imported(tmp_path: Path) -> Path:
    from llm_ingestion_okf.guard_adapter import import_gate

    target = tmp_path / "imported"
    import_bundle(
        _source_bundle(tmp_path),
        target,
        INGESTED_AT,
        origin="external",
        channel="manual",
        gate=import_gate,
    )
    return target


def test_every_pointer_a_merged_concept_carries_resolves(tmp_path: Path) -> None:
    pytest.importorskip("pdfplumber")
    pytest.importorskip("llm_ingestion_guard")
    target = _imported(tmp_path)
    pointers = 0
    for concept in sorted(target.rglob("*.md")):
        for match in IMAGE_POINTER.finditer(concept.read_text("utf-8")):
            pointers += 1
            asset = target / ASSETS_DIR / match.group("asset")
            assert asset.is_file(), f"{concept.name} points at a missing {asset.name}"
    assert pointers, "the fixture bundle carried no pointers at all"


def test_the_imported_bytes_are_the_senders_own(tmp_path: Path) -> None:
    pytest.importorskip("pdfplumber")
    pytest.importorskip("llm_ingestion_guard")
    source = _source_bundle(tmp_path)
    from llm_ingestion_okf.guard_adapter import import_gate

    target = tmp_path / "imported"
    import_bundle(
        source, target, INGESTED_AT, origin="external", channel="manual", gate=import_gate
    )
    carried = sorted((target / ASSETS_DIR).glob("*"))
    # The known-positive in the same test: a loop over an empty directory is
    # green and proves nothing, which is exactly how a repair can empty the set
    # a test iterates over and stay passing.
    assert carried, "nothing was carried, so the comparison below ran over nothing"
    for asset in carried:
        assert asset.read_bytes() == (source / ASSETS_DIR / asset.name).read_bytes()


def test_an_asset_nothing_points_at_stays_behind(tmp_path: Path) -> None:
    """The negative control, and it is the security half of the rule.

    An asset belonging to a concept the gate refused must not ride in on the
    back of one it cleared.
    """
    pytest.importorskip("pdfplumber")
    pytest.importorskip("llm_ingestion_guard")
    source = _source_bundle(tmp_path)
    (source / ASSETS_DIR / "deadbeefdead-ingen-peker.png").write_bytes(
        (source / ASSETS_DIR).glob("*.png").__next__().read_bytes() + b"\x00"
    )
    from llm_ingestion_okf.guard_adapter import import_gate

    target = tmp_path / "imported"
    import_bundle(
        source, target, INGESTED_AT, origin="external", channel="manual", gate=import_gate
    )
    assert not (target / ASSETS_DIR / "deadbeefdead-ingen-peker.png").exists()