from dataclasses import dataclass

from edge.detectors.fall import FallConfig
from edge.detectors.immobility import ImmobilityConfig
from edge.detectors.ghost import GhostConfig
from edge.detectors.zone import ZoneConfig
from edge.engine import EngineConfig


@dataclass
class Config:
    device_id: str
    camera_id: str
    cafe24_url: str
    secret: str
    fall: FallConfig
    immobility: ImmobilityConfig
    ghost: GhostConfig
    zone: ZoneConfig
    engine: EngineConfig


def _f(env: dict, key: str, default: float) -> float:
    return float(env[key]) if key in env else default


def load_config(env: dict) -> Config:
    camera_id = env.get("CAMERA_ID", "cam-01")
    fall = FallConfig(
        prone_confirm_s=_f(env, "FALL_PRONE_S", 3.0),
        no_motion_s=_f(env, "FALL_NO_MOTION_S", 10.0),
    )
    immobility = ImmobilityConfig(immobile_s=_f(env, "IMMOBILE_S", 120.0))
    ghost = GhostConfig(reappear_s=_f(env, "GHOST_REAPPEAR_S", 10.0))
    zone = ZoneConfig(debounce_s=_f(env, "ZONE_DEBOUNCE_S", 0.75))
    engine = EngineConfig(camera_id=camera_id, cooldown_s=_f(env, "COOLDOWN_S", 30.0))
    return Config(
        device_id=env.get("DEVICE_ID", "pi-unknown"),
        camera_id=camera_id,
        cafe24_url=env.get("CAFE24_URL", ""),
        secret=env.get("DEVICE_SECRET", ""),
        fall=fall, immobility=immobility, ghost=ghost, zone=zone, engine=engine,
    )