From df1b26c70824d92a5679f73dbeb9334739365f78 Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <evgeniy@nspcc.ru>
Date: Thu, 22 Jul 2021 10:57:11 +0300
Subject: [PATCH] [#687] neofs-adm: register candidates

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
---
 .../internal/modules/morph/initialize.go      |  11 +-
 .../modules/morph/initialize_register.go      | 119 ++++++++++++++++++
 2 files changed, 128 insertions(+), 2 deletions(-)
 create mode 100644 cmd/neofs-adm/internal/modules/morph/initialize_register.go

diff --git a/cmd/neofs-adm/internal/modules/morph/initialize.go b/cmd/neofs-adm/internal/modules/morph/initialize.go
index 045d1d4be6..1d3575375b 100644
--- a/cmd/neofs-adm/internal/modules/morph/initialize.go
+++ b/cmd/neofs-adm/internal/modules/morph/initialize.go
@@ -68,8 +68,15 @@ func initializeSideChainCmd(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	// TODO 5. Setup NeoFS contracts addresses in NNS.
-	// TODO 6. Register candidates and call alphabet.Vote.
+	cmd.Println("Stage 5: register candidates.")
+	if err := initCtx.registerCandidates(); err != nil {
+		return err
+	}
+
+	cmd.Println("Stage 6: transfer NEO to alphabet contracts.")
+	if err := initCtx.transferNEOToAlphabetContracts(); err != nil {
+		return err
+	}
 
 	cmd.Println("endpoint:", viper.GetString(endpointFlag))
 	cmd.Println("alphabet-wallets:", viper.GetString(alphabetWalletsFlag))
diff --git a/cmd/neofs-adm/internal/modules/morph/initialize_register.go b/cmd/neofs-adm/internal/modules/morph/initialize_register.go
new file mode 100644
index 0000000000..1a53c38122
--- /dev/null
+++ b/cmd/neofs-adm/internal/modules/morph/initialize_register.go
@@ -0,0 +1,119 @@
+package morph
+
+import (
+	"fmt"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/native"
+	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
+)
+
+// initialAlphabetNEOAmount represents total amount of GAS distributed between alphabet nodes.
+const initialAlphabetNEOAmount = native.NEOTotalSupply
+
+func (c *initializeContext) registerCandidates() error {
+	neoHash, err := c.Client.GetNativeContractHash(nativenames.Neo)
+	if err != nil {
+		return err
+	}
+
+	res, err := c.Client.InvokeFunction(neoHash, "getCandidates", []smartcontract.Parameter{}, nil)
+	if err != nil {
+		return err
+	}
+	if res.State == vm.HaltState.String() && len(res.Stack) > 0 {
+		arr, ok := res.Stack[0].Value().([]stackitem.Item)
+		if ok && len(arr) > 0 {
+			return nil
+		}
+	}
+
+	regPrice, err := c.Client.GetCandidateRegisterPrice()
+	if err != nil {
+		return fmt.Errorf("can't fetch registration price: %w", err)
+	}
+
+	sysGas := regPrice + native.GASFactor // + 1 GAS
+	for _, w := range c.Wallets {
+		acc, err := getWalletAccount(w, singleAccountName)
+		if err != nil {
+			return err
+		}
+
+		w := io.NewBufBinWriter()
+		emit.AppCall(w.BinWriter, neoHash, "registerCandidate", callflag.States, acc.PrivateKey().PublicKey().Bytes())
+		emit.Opcodes(w.BinWriter, opcode.ASSERT)
+
+		h, err := c.Client.SignAndPushInvocationTx(w.Bytes(), acc, sysGas, 0, []client.SignerAccount{{
+			Signer: transaction.Signer{
+				Account: acc.Contract.ScriptHash(),
+				Scopes:  transaction.CalledByEntry,
+			},
+			Account: acc,
+		}})
+		if err != nil {
+			return err
+		}
+
+		c.Hashes = append(c.Hashes, h)
+	}
+
+	return c.awaitTx()
+}
+
+func (c *initializeContext) transferNEOToAlphabetContracts() error {
+	neoHash, err := c.Client.GetNativeContractHash(nativenames.Neo)
+	if err != nil {
+		return err
+	}
+
+	ok, err := c.transferNEOFinished(neoHash)
+	if ok || err != nil {
+		return err
+	}
+
+	ctrPath, err := c.Command.Flags().GetString(contractsInitFlag)
+	if err != nil {
+		return fmt.Errorf("missing contracts path: %w", err)
+	}
+
+	cs, err := c.readContract(ctrPath, alphabetContract)
+	if err != nil {
+		return fmt.Errorf("can't read alphabet contract: %w", err)
+	}
+
+	amount := initialAlphabetNEOAmount / len(c.Wallets)
+
+	bw := io.NewBufBinWriter()
+	for _, w := range c.Wallets {
+		acc, err := getWalletAccount(w, singleAccountName)
+		if err != nil {
+			return err
+		}
+
+		h := state.CreateContractHash(acc.Contract.ScriptHash(), cs.NEF.Checksum, cs.Manifest.Name)
+		emit.AppCall(bw.BinWriter, neoHash, "transfer", callflag.All,
+			c.CommitteeAcc.Contract.ScriptHash(), h, int64(amount), nil)
+	}
+
+	if err := c.sendCommitteeTx(bw.Bytes(), -1); err != nil {
+		return err
+	}
+
+	return c.awaitTx()
+}
+
+func (c *initializeContext) transferNEOFinished(neoHash util.Uint160) (bool, error) {
+	bal, err := c.Client.NEP17BalanceOf(neoHash, c.CommitteeAcc.Contract.ScriptHash())
+	return bal < native.NEOTotalSupply, err
+}