package morph import ( "errors" "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/io" "github.com/nspcc-dev/neo-go/pkg/rpc/client" "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/emit" "github.com/nspcc-dev/neo-go/pkg/vm/opcode" "github.com/nspcc-dev/neo-go/pkg/vm/stackitem" "github.com/nspcc-dev/neo-go/pkg/vm/vmstate" ) // initialAlphabetNEOAmount represents the total amount of GAS distributed between alphabet nodes. const initialAlphabetNEOAmount = native.NEOTotalSupply func (c *initializeContext) registerCandidates() error { neoHash := c.nativeHash(nativenames.Neo) res, err := invokeFunction(c.Client, neoHash, "getCandidates", nil, nil) if err != nil { return err } if res.State == vmstate.Halt.String() && len(res.Stack) > 0 { arr, ok := res.Stack[0].Value().([]stackitem.Item) if ok && len(arr) > 0 { return nil } } regPrice, err := c.getCandidateRegisterPrice() if err != nil { return fmt.Errorf("can't fetch registration price: %w", err) } sysGas := regPrice + native.GASFactor // + 1 GAS for _, acc := range c.Accounts { w := io.NewBufBinWriter() emit.AppCall(w.BinWriter, neoHash, "registerCandidate", callflag.States, acc.PrivateKey().PublicKey().Bytes()) emit.Opcodes(w.BinWriter, opcode.ASSERT) if err := c.sendSingleTx(w.Bytes(), sysGas, acc); err != nil { return err } } return c.awaitTx() } func (c *initializeContext) transferNEOToAlphabetContracts() error { neoHash := c.nativeHash(nativenames.Neo) ok, err := c.transferNEOFinished(neoHash) if ok || err != nil { return err } cs := c.getContract(alphabetContract) amount := initialAlphabetNEOAmount / len(c.Wallets) bw := io.NewBufBinWriter() for _, acc := range c.Accounts { 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) emit.Opcodes(bw.BinWriter, opcode.ASSERT) } if err := c.sendCommitteeTx(bw.Bytes(), -1, false); 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 } var errGetPriceInvalid = errors.New("`getRegisterPrice`: invalid response") func (c *initializeContext) getCandidateRegisterPrice() (int64, error) { switch ct := c.Client.(type) { case *client.Client: return ct.GetCandidateRegisterPrice() default: neoHash := c.nativeHash(nativenames.Neo) res, err := invokeFunction(c.Client, neoHash, "getRegisterPrice", nil, nil) if err != nil { return 0, err } if len(res.Stack) == 0 { return 0, errGetPriceInvalid } bi, err := res.Stack[0].TryInteger() if err != nil || !bi.IsInt64() { return 0, errGetPriceInvalid } return bi.Int64(), nil } }