"""Startup auto-maintenance for the classic CLI: state-db pack/vacuum and checkpoint pruning run off the prompt thread.

Split out of ``cli.py``; ``cli`` re-exports every public name and moved bodies late-bind
cli-level names through ``from cli import ...`` at call time so facade monkeypatch seams hold.
"""

from __future__ import annotations

import logging
import threading

# Log-record parity with the origin module.
logger = logging.getLogger("cli")


def _run_state_db_auto_maintenance(session_db) -> None:
    """One-time repairs + auto-archive/prune/vacuum per the ``sessions:`` config. Never raises."""
    if session_db is None:
        return
    try:
        from hermes_cli.config import load_config as _load_full_config
        from hermes_constants import get_hermes_home as _get_hermes_home  # lazy: tests patch it
        _hermes_home_maint = _get_hermes_home()

        # One-time repairs, each latched in state_meta once it has run.
        for meta_key, repair, done_msg, skip_msg in (
            (
                "ghost_session_prune_v1",
                lambda: session_db.prune_empty_ghost_sessions(sessions_dir=_hermes_home_maint / "sessions"),
                "Pruned %d empty TUI ghost sessions", "Ghost session prune skipped: %s",
            ),
            (
                "orphaned_compression_finalize_v1",
                session_db.finalize_orphaned_compression_sessions,
                "Finalized %d orphaned compression sessions", "Orphan compression finalize skipped: %s",
            ),
        ):
            try:
                if not session_db.get_meta(meta_key):
                    count = repair()
                    session_db.set_meta(meta_key, "1")
                    if count:
                        logger.info(done_msg, count)
            except Exception as _exc:
                logger.debug(skip_msg, _exc)

        cfg = (_load_full_config().get("sessions") or {})

        # Auto-archive is independent of auto_prune: run it before prune's early return.
        if cfg.get("auto_archive", False):
            session_db.maybe_auto_archive(
                idle_days=float(cfg.get("auto_archive_days", 3)),
                min_interval_hours=int(cfg.get("min_interval_hours", 24)),
            )

        if not cfg.get("auto_prune", False):
            return
        session_db.maybe_auto_prune_and_vacuum(
            retention_days=int(cfg.get("retention_days", 90)),
            min_interval_hours=int(cfg.get("min_interval_hours", 24)),
            min_vacuum_interval_days=int(cfg.get("min_vacuum_interval_days", 30)),
            vacuum=bool(cfg.get("vacuum_after_prune", True)),
            sessions_dir=_hermes_home_maint / "sessions",
        )
    except Exception as exc:
        logger.debug("state.db auto-maintenance skipped: %s", exc)


def _run_checkpoint_auto_maintenance() -> None:
    """Checkpoint store retention on a daemon thread: its ``git gc`` can block for tens of seconds
    on a large store, which used to stall the prompt once a day. ``auto_prune_from_config`` owns the
    config gate and the 24h marker and never raises."""
    from tools.checkpoint_maintenance import auto_prune_from_config
    threading.Thread(target=auto_prune_from_config, name="checkpoint-auto-prune", daemon=True).start()