"""Server-level constants: paths, port, timeouts, state lock."""

import threading
from pathlib import Path

# Runtime data lives in XDG data dir
DATA_DIR = Path.home() / ".local" / "share" / "amc"
SESSIONS_DIR = DATA_DIR / "sessions"
EVENTS_DIR = DATA_DIR / "events"

# Source files live in project directory (relative to this module)
PROJECT_DIR = Path(__file__).resolve().parent.parent
DASHBOARD_DIR = PROJECT_DIR / "dashboard"

PORT = 7400
STALE_EVENT_AGE = 86400  # 24 hours in seconds
STALE_STARTING_AGE = 3600  # 1 hour - sessions stuck in "starting" are orphans

# Serialize state collection because it mutates session files/caches.
_state_lock = threading.Lock()