"""Test-process isolation for persistent runtime state."""
from __future__ import annotations

import os
import shutil
import sys
import tempfile
from pathlib import Path


# curry_store constructs its SQLite singleton during test collection. Point it
# at a per-run directory before any test module imports synapse, so the release
# gate is repeatable and never writes test constants into the checkout's live
# data/curry.db.
_TEST_STATE = Path(tempfile.mkdtemp(prefix="nexus-pytest-"))
os.environ["NEXUS_CURRY_DB"] = str(_TEST_STATE / "curry.db")


def pytest_sessionfinish(session, exitstatus):
    module = sys.modules.get("synapse.curry_store")
    if module is not None:
        module.curry_db.close()
    shutil.rmtree(_TEST_STATE, ignore_errors=True)