import re
from pathlib import Path

DIRECTIVES_DIR = Path("conductor/directives")
SKIP_DIRS = {"presets"}


def _iter_directive_subdirs() -> list[Path]:
 if not DIRECTIVES_DIR.is_dir():
  return []
 return sorted(
  p for p in DIRECTIVES_DIR.iterdir()
  if p.is_dir() and p.name not in SKIP_DIRS
 )


def test_every_directive_has_v1_and_meta() -> None:
 missing: list[tuple[str, str]] = []
 for sub in _iter_directive_subdirs():
  for fname in ("v1.md", "meta.md"):
   if not (sub / fname).is_file():
    missing.append((sub.name, fname))
 assert not missing, f"Directives missing required files: {missing}"


def test_every_meta_md_references_directive_name() -> None:
 mismatches: list[str] = []
 for sub in _iter_directive_subdirs():
  meta = sub / "meta.md"
  if not meta.is_file():
   continue
  text = meta.read_text(encoding="utf-8")
  if not re.search(rf"^#\s*{re.escape(sub.name)}\b", text, re.MULTILINE):
   mismatches.append(sub.name)
 assert not mismatches, f"meta.md headers mismatch directory name: {mismatches}"


def test_every_v1_md_starts_with_heading() -> None:
 bad: list[str] = []
 for sub in _iter_directive_subdirs():
  v1 = sub / "v1.md"
  if v1.is_file() and not re.match(r"^#\s+", v1.read_text(encoding="utf-8", errors="ignore")):
   bad.append(sub.name)
 assert not bad, f"v1.md missing top-level heading: {bad}"