from dataclasses import dataclass, field
from typing import List, Optional

@dataclass
class Interface:
    id: Optional[int] = None
    port: int = 0
    service: str = "[SERVICE]"
    equipment_id: Optional[int] = None

@dataclass
class Equipment:
    id: Optional[int] = None
    hostname: str = "[HOSTNAME]"
    type: str = "Server"
    ip_address: str = "255.255.255.0"
    is_active: bool = True
    latency: Optional[float] = None
    interfaces: List[Interface] = field(default_factory=list)