"""Domain models for OpsBridge."""
from __future__ import annotations

from dataclasses import dataclass, field
from enum import Enum
from typing import Optional


class BridgeState(str, Enum):
    STOPPED = "stopped"
    STARTING = "starting"
    CONNECTED = "connected"
    DEGRADED = "degraded"
    RECONNECTING = "reconnecting"
    FAILED = "failed"


class ActorType(str, Enum):
    ADM = "adm"  # human operator
    AGT = "agt"  # LLM-powered autonomous agent
    ATM = "atm"  # deterministic script / pipeline


class CertAcquisitionError(Exception):
    """Raised when cert_command fails to produce a certificate."""


@dataclass
class ReconnectPolicy:
    max_attempts: int = 0  # 0 = infinite
    backoff_initial: int = 5
    backoff_max: int = 60


@dataclass
class HealthCheckConfig:
    url: str
    interval_seconds: int = 30
    timeout_seconds: int = 5


@dataclass
class TunnelConfig:
    name: str
    host: str
    remote_port: int
    local_port: int
    ssh_user: str
    ssh_key: str
    actor: str
    reconnect: ReconnectPolicy = field(default_factory=ReconnectPolicy)
    health_check: Optional[HealthCheckConfig] = None
    direction: str = "reverse"  # "reverse" (-R) or "local" (-L)
    # Forward-destination host as seen from the remote end (direction "local")
    # or from this workstation (direction "reverse"). Defaults to loopback;
    # set e.g. a k3s ClusterIP to tunnel to an in-cluster Service.
    remote_host: str = "127.0.0.1"
    cert_command: Optional[str] = None


@dataclass
class ActorInfo:
    name: str
    actor_type: ActorType
    description: str = ""