"""Locate the project root and make it importable.

Scripts under ``scripts/`` are run directly (``python scripts/sync_talks.py``), so
the repository root is not on ``sys.path`` and relative paths would resolve against
whatever directory the caller happened to be in. Importing this module fixes both,
deriving the root from this file's own location.

The predecessor hardcoded ``/home/lasse/riksdagen`` in 22 files, which is why the
project could only ever run on one machine.
"""
from __future__ import annotations

import os
import sys
from pathlib import Path

PROJECT_ROOT = Path(__file__).resolve().parent

# Bulk source data — downloaded corpora, not repository content. Kept outside the
# tree by default so a checkout stays small; point PLENUM_DATA_DIR at an existing
# download to reuse one.
DATA_DIR = Path(os.environ.get("PLENUM_DATA_DIR") or PROJECT_ROOT / "data")


def set_project_root() -> None:
    """Put the project root on ``sys.path`` and make it the working directory."""
    root = str(PROJECT_ROOT)
    if root not in sys.path:
        sys.path.insert(0, root)
    os.chdir(root)


set_project_root()