"""系统状态接口 DTO。"""

from __future__ import annotations

from pydantic import BaseModel, Field


class MemoryUsage(BaseModel):
    total: int = Field(..., description="物理内存总量（字节）")
    available: int = Field(..., description="可用内存（字节）")
    used: int = Field(..., description="已用内存（字节）")
    percent: float = Field(..., description="使用率 0-100")


class DiskUsage(BaseModel):
    device: str
    mountpoint: str
    fstype: str
    total: int
    used: int
    free: int
    percent: float


class SystemStatus(BaseModel):
    hostname: str
    cpu_percent: float = Field(..., description="CPU 使用率（所有核平均）")
    cpu_count: int
    memory: MemoryUsage
    disks: list[DiskUsage]
    uptime_seconds: float