Add support for collaborative redemption of vtxos & Changes to ark wallet (#72)

* Add internal support for collaborative exit

* Update protos and interface layer

* Fixes after proto updates

* Fix printing json & Do not print ark pubkey in config

* Add collaborative redeem command

* Polish

* Add address validation

* Fix building tree without right branch

* Fixes and validation checks

* Fixes

* Fix counting complete queued payments

* Add relays

* Add and compute onchain balance concurrently

* Tiny refactor

* Merge `config connect` into `init` cmd

asp/internal/interface/grpc/handlers/utils.go

@@ -1,10 +1,14 @@
 package handlers
 
 import (
+	"encoding/hex"
 	"fmt"
 
+	arkv1 "github.com/ark-network/ark/api-spec/protobuf/gen/ark/v1"
 	"github.com/ark-network/ark/common"
+	"github.com/ark-network/ark/internal/core/domain"
 	"github.com/decred/dcrd/dcrec/secp256k1/v4"
+	"github.com/vulpemventures/go-elements/address"
 	"github.com/vulpemventures/go-elements/psetv2"
 )
 
@@ -20,13 +24,41 @@ func parseTxs(txs []string) ([]string, error) {
 	return txs, nil
 }
 
-func parseAddress(addr string) (*secp256k1.PublicKey, error) {
+func parseAddress(addr string) (string, *secp256k1.PublicKey, *secp256k1.PublicKey, error) {
 	if len(addr) <= 0 {
-		return nil, fmt.Errorf("missing address")
+		return "", nil, nil, fmt.Errorf("missing address")
 	}
-	_, userPubkey, _, err := common.DecodeAddress(addr)
-	if err != nil {
-		return nil, fmt.Errorf("invalid address: %s", err)
-	}
-	return userPubkey, nil
+	return common.DecodeAddress(addr)
+}
+
+func parseReceivers(outs []*arkv1.Output) ([]domain.Receiver, error) {
+	receivers := make([]domain.Receiver, 0, len(outs))
+	for _, out := range outs {
+		if out.GetAmount() == 0 {
+			return nil, fmt.Errorf("missing output amount")
+		}
+		if len(out.GetAddress()) <= 0 {
+			return nil, fmt.Errorf("missing output address")
+		}
+		var pubkey, addr string
+		_, pk, _, err := common.DecodeAddress(out.GetAddress())
+		if err != nil {
+			if _, err := address.ToOutputScript(out.GetAddress()); err != nil {
+				return nil, fmt.Errorf("invalid output address: unknown format")
+			}
+			if isConf, _ := address.IsConfidential(out.GetAddress()); isConf {
+				return nil, fmt.Errorf("invalid output address: must be unconfidential")
+			}
+			addr = out.GetAddress()
+		}
+		if pk != nil {
+			pubkey = hex.EncodeToString(pk.SerializeCompressed())
+		}
+		receivers = append(receivers, domain.Receiver{
+			Pubkey:         pubkey,
+			Amount:         out.GetAmount(),
+			OnchainAddress: addr,
+		})
+	}
+	return receivers, nil
 }