"""Tests for tools/verify_adr_lang_pairs.py."""

from __future__ import annotations

import sys
from pathlib import Path

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

import verify_adr_lang_pairs as v  # noqa: E402


def _make_adr(
    path: Path,
    title_id: str,
    title_text: str = "Some Title",
    status: str = "Accepted",
) -> None:
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(
        f"# ADR-{title_id}: {title_text}\n\n"
        f"## Status\n\n{status}\n\n"
        f"## Context\n\nbody\n",
        encoding="utf-8",
    )


def test_complete_pairs_pass(tmp_path: Path) -> None:
    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", "Foo EN")
    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", "Foo KO")
    assert v.verify(tmp_path) == []


def test_empty_dirs_pass(tmp_path: Path) -> None:
    assert v.verify(tmp_path) == []


def test_missing_ko_fails(tmp_path: Path) -> None:
    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001")
    errs = v.verify(tmp_path)
    assert any("missing KO" in e and "ADR-0001-foo-bar.md" in e for e in errs)


def test_orphan_ko_fails(tmp_path: Path) -> None:
    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001")
    errs = v.verify(tmp_path)
    assert any("orphan KO" in e and "ADR-0001-foo-bar.md" in e for e in errs)


def test_status_mismatch_fails(tmp_path: Path) -> None:
    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", status="Accepted")
    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", status="Proposed")
    errs = v.verify(tmp_path)
    assert any("Status block mismatch" in e for e in errs)


def test_title_id_mismatch_fails(tmp_path: Path) -> None:
    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0002")
    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001")
    errs = v.verify(tmp_path)
    assert any("EN title ADR-ID" in e for e in errs)


def test_multiline_status_with_parenthetical_passes(tmp_path: Path) -> None:
    """Real ADRs like ADR-0001 have multi-line Status with revision notes."""
    multiline_status = (
        "Accepted (Revision 2 - 2026-04-27: concrete bit layout,\n"
        "Supersedes ADR-0031.)"
    )
    _make_adr(
        tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", status=multiline_status
    )
    _make_adr(
        tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", status=multiline_status
    )
    assert v.verify(tmp_path) == []


def test_crlf_normalization(tmp_path: Path) -> None:
    """KO has CRLF, EN has LF; Status content is otherwise identical -> pass."""
    en = tmp_path / "docs/adr/ADR-0001-foo-bar.md"
    ko = tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md"
    en.parent.mkdir(parents=True, exist_ok=True)
    ko.parent.mkdir(parents=True, exist_ok=True)
    en.write_bytes(
        b"# ADR-0001: Foo\n\n## Status\n\nAccepted\n\n## Context\n\nbody\n"
    )
    ko.write_bytes(
        b"# ADR-0001: Foo\r\n\r\n## Status\r\n\r\nAccepted\r\n\r\n## Context\r\n\r\nbody\r\n"
    )
    assert v.verify(tmp_path) == []


def test_underscore_in_slug_recognized(tmp_path: Path) -> None:
    """ADR-0013 uses an underscore in its slug; the regex must accept it."""
    _make_adr(tmp_path / "docs/adr/ADR-0013-ver-verification_strategy.md", "0013")
    _make_adr(tmp_path / "docs/adr-ko/ADR-0013-ver-verification_strategy.md", "0013")
    assert v.verify(tmp_path) == []


def test_main_exit_codes(tmp_path: Path, capsys) -> None:
    assert v.main(["--root", str(tmp_path)]) == 0
    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001")
    assert v.main(["--root", str(tmp_path)]) == 1
    out = capsys.readouterr().out
    assert "FAILED" in out