from dataclasses import dataclass, field
import yaml


@dataclass
class ProxyRoute:
    domain: str
    target_host: str
    target_port: int
    containers: list[str] = field(default_factory=list)
    timeout_seconds: int = 0  # idle timeout before stopping container (0 = never)
    load_seconds: int = 0     # seconds to wait after starting container


def load_config(path: str) -> dict[str, ProxyRoute]:
    """Parse config.yml and return dict of domain -> ProxyRoute."""
    with open(path) as f:
        data = yaml.safe_load(f)
    routes: dict[str, ProxyRoute] = {}
    for h in data.get('proxy_hosts', []):
        containers = [c['container_name'] for c in h.get('containers', [])]
        route = ProxyRoute(
            domain=h['domain'],
            target_host=h['proxy_host'],
            target_port=h['proxy_port'],
            containers=containers,
            timeout_seconds=h.get('proxy_timeout_seconds', 0),
            load_seconds=h.get('proxy_load_seconds', 0),
        )
        routes[route.domain] = route
    return routes