from pathlib import Path

import scripts.decisions_lib as dl

FIX = Path(__file__).parent / "fixtures" / "sample_decisions.md"


def test_parses_migrated_record():
    recs = dl.parse_file(FIX)
    migrated = [r for r in recs if r.key == "ci.runner-placement"]
    assert len(migrated) == 1
    r = migrated[0]
    assert r.status == "active"
    assert r.since == "2026-07-17"
    assert r.supersedes == "none"
    assert r.superseded_by == "none"
    assert r.rule == "Every CI services container gets an explicit cap."
    assert r.signals is not None
    assert "issues: #390 #406" in r.signals
    assert r.mechanics is not None
    assert r.mechanics.startswith("docs/ci-cd.md")


def test_legacy_record_is_unmigrated():
    recs = dl.parse_file(FIX)
    legacy = [r for r in recs if r.heading.endswith("(#231)")]
    assert len(legacy) == 1
    assert legacy[0].key is None
    assert legacy[0].status == "legacy-unmigrated"


def test_index_section_parses_as_heading():
    recs = dl.parse_file(FIX)
    assert any(r.heading == "Index" for r in recs)


def test_parses_optional_stale_after_and_sources():
    recs = dl.parse_file(FIX)
    r = next(r for r in recs if r.key == "ci.peak-anon-measurement")
    assert r.stale_after == "2027-01-15"
    assert r.sources is not None
    assert "gitea run 4471" in r.sources


def test_optional_fields_default_to_none_when_absent():
    recs = dl.parse_file(FIX)
    r = next(r for r in recs if r.key == "ci.runner-placement")
    assert r.stale_after is None
    assert r.sources is None


def test_empty_stale_after_parses_as_empty_string_not_none():
    """Absent vs present-but-empty must stay distinguishable for the validator."""
    text = (
        "## H\n"
        "`key: a.b` · `status: active` · `since: 2026-01-01` · `stale-after:` "
        "· `supersedes: none` · `superseded-by: none`\n"
        "**Rule:** r\n"
    )
    r = dl.parse_text(text, Path("fake.md"))[0]
    assert r.stale_after == ""