from pathlib import Path
import threading

# Claude Code conversation directory
CLAUDE_PROJECTS_DIR = Path.home() / ".claude" / "projects"

# Codex conversation directory
CODEX_SESSIONS_DIR = Path.home() / ".codex" / "sessions"

# Plugin path for zellij-send-keys
ZELLIJ_PLUGIN = Path.home() / ".config" / "zellij" / "plugins" / "zellij-send-keys.wasm"

# 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
CODEX_ACTIVE_WINDOW = 600  # 10 minutes - only discover recently-active Codex sessions

# Cache for Zellij session list (avoid calling zellij on every request)
_zellij_cache = {"sessions": None, "expires": 0}

# Cache for Codex pane info (avoid running pgrep/ps/lsof on every request)
_codex_pane_cache = {"pid_info": {}, "cwd_map": {}, "expires": 0}

# Cache for parsed context usage by transcript file path + mtime/size
# Limited to prevent unbounded memory growth
_context_usage_cache = {}
_CONTEXT_CACHE_MAX = 100

# Cache mapping Codex session IDs to transcript paths (or None when missing)
_codex_transcript_cache = {}
_CODEX_CACHE_MAX = 200

# Codex sessions dismissed during this server lifetime (prevents re-discovery)
_dismissed_codex_ids = set()
_DISMISSED_MAX = 500

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