// Package cni hosts the CNI plugin entry-points. The plugin binary is short-
// lived: it is invoked by kubelet, talks to flock-agent over a unix socket,
// and exits. All real work happens in the agent.
package cni

import (
	"errors"

	"github.com/containernetworking/cni/pkg/skel"
	"github.com/containernetworking/cni/pkg/types"
	current "github.com/containernetworking/cni/pkg/types/100"
)

// SocketPath is the unix socket exposed by flock-agent.
const SocketPath = "/run/flock/flock.sock"

var errNotImplemented = errors.New("flock: ADD/DEL/CHECK not implemented in M1 scaffold")

// CmdAdd is invoked by kubelet when a pod sandbox is created.
func CmdAdd(args *skel.CmdArgs) error {
	// M2: dial SocketPath, send ADD RPC, return CNI result.
	_ = args
	_ = current.ImplementedSpecVersion
	return types.NewError(types.ErrInternal, "flock-add", errNotImplemented.Error())
}

// CmdDel is invoked by kubelet when a pod sandbox is torn down.
func CmdDel(args *skel.CmdArgs) error {
	_ = args
	return types.NewError(types.ErrInternal, "flock-del", errNotImplemented.Error())
}

// CmdCheck verifies that the live netns matches the persisted allocation.
func CmdCheck(args *skel.CmdArgs) error {
	_ = args
	return types.NewError(types.ErrInternal, "flock-check", errNotImplemented.Error())
}