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erc721_transfer.go
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erc721_transfer.go
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package bridge
import (
"context"
"fmt"
"math/big"
"strings"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
ethTypes "github.com/ethereum/go-ethereum/core/types"
"github.com/status-im/status-go/account"
"github.com/status-im/status-go/contracts/community-tokens/collectibles"
"github.com/status-im/status-go/eth-node/types"
"github.com/status-im/status-go/params"
"github.com/status-im/status-go/rpc"
"github.com/status-im/status-go/services/wallet/token"
"github.com/status-im/status-go/transactions"
)
type ERC721TransferTxArgs struct {
transactions.SendTxArgs
TokenID *hexutil.Big `json:"tokenId"`
Recipient common.Address `json:"recipient"`
}
type ERC721TransferBridge struct {
rpcClient *rpc.Client
transactor *transactions.Transactor
}
func NewERC721TransferBridge(rpcClient *rpc.Client, transactor *transactions.Transactor) *ERC721TransferBridge {
return &ERC721TransferBridge{rpcClient: rpcClient, transactor: transactor}
}
func (s *ERC721TransferBridge) Name() string {
return "ERC721Transfer"
}
func (s *ERC721TransferBridge) Can(from, to *params.Network, token *token.Token, balance *big.Int) (bool, error) {
return from.ChainID == to.ChainID, nil
}
func (s *ERC721TransferBridge) CalculateFees(from, to *params.Network, token *token.Token, amountIn *big.Int, nativeTokenPrice, tokenPrice float64, gasPrice *big.Float) (*big.Int, *big.Int, error) {
return big.NewInt(0), big.NewInt(0), nil
}
func (s *ERC721TransferBridge) EstimateGas(fromNetwork *params.Network, toNetwork *params.Network, from common.Address, to common.Address, token *token.Token, amountIn *big.Int) (uint64, error) {
ethClient, err := s.rpcClient.EthClient(fromNetwork.ChainID)
if err != nil {
return 0, err
}
var input []byte
value := new(big.Int)
abi, err := abi.JSON(strings.NewReader(collectibles.CollectiblesMetaData.ABI))
if err != nil {
return 0, err
}
id, success := big.NewInt(0).SetString(token.Symbol, 0)
if !success {
return 0, fmt.Errorf("failed to convert %s to big.Int", token.Symbol)
}
input, err = abi.Pack("safeTransferFrom",
from,
to,
id,
)
if err != nil {
return 0, err
}
ctx := context.Background()
if code, err := ethClient.PendingCodeAt(ctx, token.Address); err != nil {
return 0, err
} else if len(code) == 0 {
return 0, bind.ErrNoCode
}
msg := ethereum.CallMsg{
From: from,
To: &token.Address,
Value: value,
Data: input,
}
estimation, err := ethClient.EstimateGas(ctx, msg)
if err != nil {
return 0, err
}
increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
return uint64(increasedEstimation), nil
}
func (s *ERC721TransferBridge) sendOrBuild(sendArgs *TransactionBridge, signerFn bind.SignerFn) (tx *ethTypes.Transaction, err error) {
ethClient, err := s.rpcClient.EthClient(sendArgs.ChainID)
if err != nil {
return tx, err
}
contract, err := collectibles.NewCollectibles(common.Address(*sendArgs.ERC721TransferTx.To), ethClient)
if err != nil {
return tx, err
}
nonce, err := s.transactor.NextNonce(s.rpcClient, sendArgs.ChainID, sendArgs.ERC721TransferTx.From)
if err != nil {
return tx, err
}
argNonce := hexutil.Uint64(nonce)
sendArgs.ERC721TransferTx.Nonce = &argNonce
txOpts := sendArgs.ERC721TransferTx.ToTransactOpts(signerFn)
tx, err = contract.SafeTransferFrom(txOpts, common.Address(sendArgs.ERC721TransferTx.From),
sendArgs.ERC721TransferTx.Recipient,
sendArgs.ERC721TransferTx.TokenID.ToInt())
return tx, err
}
func (s *ERC721TransferBridge) Send(sendArgs *TransactionBridge, verifiedAccount *account.SelectedExtKey) (hash types.Hash, err error) {
tx, err := s.sendOrBuild(sendArgs, getSigner(sendArgs.ChainID, sendArgs.ERC721TransferTx.From, verifiedAccount))
if err != nil {
return hash, err
}
return types.Hash(tx.Hash()), nil
}
func (s *ERC721TransferBridge) BuildTransaction(sendArgs *TransactionBridge) (*ethTypes.Transaction, error) {
return s.sendOrBuild(sendArgs, nil)
}
func (s *ERC721TransferBridge) CalculateAmountOut(from, to *params.Network, amountIn *big.Int, symbol string) (*big.Int, error) {
return amountIn, nil
}
func (s *ERC721TransferBridge) GetContractAddress(network *params.Network, token *token.Token) *common.Address {
return &token.Address
}