metrics

type BatteryInfo struct {
	Percent  float64 `json:"percent"`
	Charging bool    `json:"charging"`
}

type LoadAverages struct {
	Load1  float64 `json:"load1"`
	Load5  float64 `json:"load5"`
	Load15 float64 `json:"load15"`
}

type NetworkIO struct {
	BytesSent uint64 `json:"bytes_sent"`
	BytesRecv uint64 `json:"bytes_recv"`
}

type Snapshot struct {
	Timestamp     time.Time     `json:"timestamp"`
	Uptime        time.Duration `json:"uptime"`
	MemoryTotal   uint64        `json:"memory_total"`
	MemoryUsed    uint64        `json:"memory_used"`
	MemoryPercent float64       `json:"memory_percent"`
	CPUPercent    float64       `json:"cpu_percent"`
	DiskTotal     uint64        `json:"disk_total"`
	DiskUsed      uint64        `json:"disk_used"`
	DiskPercent   float64       `json:"disk_percent"`

	// Optional metrics (nil if unavailable on platform)
	LoadAverages *LoadAverages `json:"load_averages,omitempty"`
	SwapTotal    *uint64       `json:"swap_total,omitempty"`
	SwapUsed     *uint64       `json:"swap_used,omitempty"`
	SwapPercent  *float64      `json:"swap_percent,omitempty"`
	Battery      *BatteryInfo  `json:"battery,omitempty"`
	ProcessCount *int          `json:"process_count,omitempty"`
	NetworkIO    *NetworkIO    `json:"network_io,omitempty"`
}