import re
from pathlib import Path

from config import STORAGE_DIR, PROJECTS_DIR


def _safe(name: str) -> str:
    return name.replace("/", "_").replace("\x00", "")


def guide_content_path(topic: str, format_name: str) -> Path:
    return STORAGE_DIR / "guides" / f"{_safe(topic)} - {format_name}.json"


def bausteine_path(topic: str) -> Path:
    return STORAGE_DIR / "bausteine" / f"{_safe(topic)}.md"


def bausteine_topics() -> list[str]:
    """Themen, für die eine finale Baustein-Datei existiert (ohne Zwischendateien)."""
    bdir = STORAGE_DIR / "bausteine"
    if not bdir.is_dir():
        return []
    return [
        p.stem for p in bdir.glob("*.md")
        if not re.search(r"\.(recherche-\d+|auswahl(-\d+|-check)?|einordnung-\d+|final-check|sortierung)$", p.stem)
    ]


def project_dir(name: str) -> Path:
    return PROJECTS_DIR / name