package libvirt

// Client abstracts libvirt operations needed by the node-agent.
type Client interface {
	ListVMs() ([]VM, error)
	CreateVM(spec VMSpec) (VM, error)
	StartVM(id string) error
	StopVM(id string) error
	RebootVM(id string) error
	DeleteVM(id string) error
}

type VMSpec struct {
	ID           string
	Name         string
	CPU          int
	MemoryMB     int
	Disks        []DiskSpec
	NICs         []NICSpec
	CloudInit    *CloudInitSpec
	CloudInitISO string
}

type DiskSpec struct {
	Name     string
	Pool     string
	SizeGB   int
	Bus      string
	Path     string
	Prealloc string // "", "metadata", "full"
}

type NICSpec struct {
	Bridge string
	VLAN   int
	Model  string
}

type CloudInitSpec struct {
	User     string
	SSHKeys  []string
	UserData string
}

type VM struct {
	ID       string
	Name     string
	Status   string
	CPU      int
	MemoryMB int
}

// TODO: implement a real libvirt-go backed client that renders domain XML from templates.