[#18] Add invoke helpers for AddPeer and UpdatePeer methods

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/innerring/invoke/netmap.go

@@ -1,13 +1,23 @@
 package invoke
 
 import (
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
 )
 
+type (
+	UpdatePeerArgs struct {
+		Key    *keys.PublicKey
+		Status uint32
+	}
+)
+
 const (
 	getEpochMethod        = "epoch"
 	setNewEpochMethod     = "newEpoch"
+	approvePeerMethod     = "addPeer"
+	updatePeerStateMethod = "updateState"
 )
 
 // Epoch return epoch value from contract.
@@ -37,3 +47,24 @@ func SetNewEpoch(cli *client.Client, con util.Uint160, epoch uint64) error {
 
 	return cli.Invoke(con, extraFee, setNewEpochMethod, int64(epoch))
 }
+
+// ApprovePeer invokes AddPeer method.
+func ApprovePeer(cli *client.Client, con util.Uint160, peer []byte) error {
+	if cli == nil {
+		return client.ErrNilClient
+	}
+
+	return cli.Invoke(con, extraFee, approvePeerMethod, peer)
+}
+
+// UpdatePeerState invokes AddPeer method.
+func UpdatePeerState(cli *client.Client, con util.Uint160, args *UpdatePeerArgs) error {
+	if cli == nil {
+		return client.ErrNilClient
+	}
+
+	return cli.Invoke(con, extraFee, updatePeerStateMethod,
+		args.Key.Bytes(),
+		int64(args.Status),
+	)
+}