import os


class Config:
    # LAN / kiosk deployments typically don't need strong cookie security.
    SECRET_KEY = os.environ.get("SECRET_KEY", "dev-secret-key-change-me")

    BASE_DIR = os.path.abspath(os.path.dirname(__file__))
    DB_PATH = os.path.join(BASE_DIR, "syncplayer.db")
    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL", f"sqlite:///{DB_PATH}")
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    MEDIA_DIR = os.environ.get("MEDIA_DIR", os.path.join(BASE_DIR, "media"))
    MAX_CONTENT_LENGTH = int(os.environ.get("MAX_CONTENT_LENGTH", str(2 * 1024 * 1024 * 1024)))  # 2GB

    # Socket.IO tuning for LAN
    SOCKETIO_PING_INTERVAL = float(os.environ.get("SOCKETIO_PING_INTERVAL", "5"))
    SOCKETIO_PING_TIMEOUT = float(os.environ.get("SOCKETIO_PING_TIMEOUT", "10"))

    # Client drift correction thresholds (ms)
    DRIFT_SOFT_MS = float(os.environ.get("DRIFT_SOFT_MS", "15"))
    DRIFT_HARD_MS = float(os.environ.get("DRIFT_HARD_MS", "100"))

    # When an event triggers we schedule playback this many ms into the future.
    EVENT_LEAD_TIME_MS = int(os.environ.get("EVENT_LEAD_TIME_MS", "5000"))

    # If video duration isn't known, keep event state alive for this many seconds.
    EVENT_FALLBACK_TTL_SECONDS = int(os.environ.get("EVENT_FALLBACK_TTL_SECONDS", "3600"))

    # CORS: allow everything within LAN. Tighten if needed.
    CORS_ORIGINS = os.environ.get("CORS_ORIGINS", "*")