142 lines
4.0 KiB
Go
142 lines
4.0 KiB
Go
package bridge
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import (
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"context"
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"math/big"
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"strings"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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ethTypes "github.com/ethereum/go-ethereum/core/types"
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"github.com/status-im/status-go/account"
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"github.com/status-im/status-go/contracts/ierc20"
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"github.com/status-im/status-go/eth-node/types"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/rpc"
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"github.com/status-im/status-go/services/wallet/token"
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"github.com/status-im/status-go/transactions"
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)
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type TransferBridge struct {
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rpcClient *rpc.Client
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transactor *transactions.Transactor
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}
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func NewTransferBridge(rpcClient *rpc.Client, transactor *transactions.Transactor) *TransferBridge {
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return &TransferBridge{rpcClient: rpcClient, transactor: transactor}
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}
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func (s *TransferBridge) Name() string {
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return "Transfer"
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}
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func (s *TransferBridge) Can(from, to *params.Network, token *token.Token, toToken *token.Token, balance *big.Int) (bool, error) {
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return from.ChainID == to.ChainID, nil
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}
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func (s *TransferBridge) CalculateFees(from, to *params.Network, token *token.Token, amountIn *big.Int, nativeTokenPrice, tokenPrice float64, gasPrice *big.Float) (*big.Int, *big.Int, error) {
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return big.NewInt(0), big.NewInt(0), nil
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}
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func (s *TransferBridge) EstimateGas(fromNetwork *params.Network, toNetwork *params.Network, from common.Address, to common.Address, token *token.Token, toToken *token.Token, amountIn *big.Int) (uint64, error) {
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estimation := uint64(0)
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var err error
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if token.Symbol == "ETH" {
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estimation, err = s.transactor.EstimateGas(fromNetwork, from, to, amountIn, []byte("eth_sendRawTransaction"))
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if err != nil {
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return 0, err
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}
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} else {
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ethClient, err := s.rpcClient.EthClient(fromNetwork.ChainID)
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if err != nil {
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return 0, err
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}
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abi, err := abi.JSON(strings.NewReader(ierc20.IERC20ABI))
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if err != nil {
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return 0, err
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}
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input, err := abi.Pack("transfer",
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to,
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amountIn,
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)
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if err != nil {
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return 0, err
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}
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ctx := context.Background()
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msg := ethereum.CallMsg{
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From: from,
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To: &token.Address,
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Data: input,
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}
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estimation, err = ethClient.EstimateGas(ctx, msg)
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if err != nil {
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return 0, err
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}
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}
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increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
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return uint64(increasedEstimation), nil
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}
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func (s *TransferBridge) BuildTx(network *params.Network, fromAddress common.Address, toAddress common.Address, token *token.Token, amountIn *big.Int) (*ethTypes.Transaction, error) {
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toAddr := types.Address(toAddress)
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if strings.EqualFold(token.Symbol, "ETH") {
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sendArgs := &TransactionBridge{
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TransferTx: &transactions.SendTxArgs{
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From: types.Address(fromAddress),
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To: &toAddr,
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Value: (*hexutil.Big)(amountIn),
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Data: types.HexBytes("0x0"),
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},
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ChainID: network.ChainID,
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}
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return s.BuildTransaction(sendArgs)
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}
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abi, err := abi.JSON(strings.NewReader(ierc20.IERC20ABI))
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if err != nil {
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return nil, err
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}
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input, err := abi.Pack("transfer",
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toAddress,
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amountIn,
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)
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if err != nil {
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return nil, err
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}
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sendArgs := &TransactionBridge{
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TransferTx: &transactions.SendTxArgs{
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From: types.Address(fromAddress),
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To: &toAddr,
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Value: (*hexutil.Big)(big.NewInt(0)),
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Data: input,
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},
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ChainID: network.ChainID,
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}
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return s.BuildTransaction(sendArgs)
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}
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func (s *TransferBridge) Send(sendArgs *TransactionBridge, verifiedAccount *account.SelectedExtKey) (types.Hash, error) {
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return s.transactor.SendTransactionWithChainID(sendArgs.ChainID, *sendArgs.TransferTx, verifiedAccount)
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}
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func (s *TransferBridge) BuildTransaction(sendArgs *TransactionBridge) (*ethTypes.Transaction, error) {
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return s.transactor.ValidateAndBuildTransaction(sendArgs.ChainID, *sendArgs.TransferTx)
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}
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func (s *TransferBridge) CalculateAmountOut(from, to *params.Network, amountIn *big.Int, symbol string) (*big.Int, error) {
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return amountIn, nil
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}
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func (s *TransferBridge) GetContractAddress(network *params.Network, token *token.Token) *common.Address {
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return nil
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}
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