status-go/services/wallet/bridge/transfer.go

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package bridge
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"
"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/common"
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"
"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"
"github.com/status-im/status-go/transactions"
)
type TransferBridge struct {
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rpcClient *rpc.Client
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transactor *transactions.Transactor
}
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func NewTransferBridge(rpcClient *rpc.Client, transactor *transactions.Transactor) *TransferBridge {
return &TransferBridge{rpcClient: rpcClient, transactor: transactor}
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}
func (s *TransferBridge) Name() string {
return "Transfer"
}
func (s *TransferBridge) Can(from, to *params.Network, token *token.Token, balance *big.Int) (bool, error) {
return from.ChainID == to.ChainID, nil
}
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) {
return big.NewInt(0), big.NewInt(0), nil
}
func (s *TransferBridge) EstimateGas(fromNetwork *params.Network, toNetwork *params.Network, from common.Address, to common.Address, token *token.Token, amountIn *big.Int) (uint64, error) {
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estimation := uint64(0)
var err error
if token.Symbol == "ETH" {
estimation, err = s.transactor.EstimateGas(fromNetwork, from, to, amountIn, []byte("eth_sendRawTransaction"))
if err != nil {
return 0, err
}
} else {
ethClient, err := s.rpcClient.EthClient(fromNetwork.ChainID)
if err != nil {
return 0, err
}
abi, err := abi.JSON(strings.NewReader(ierc20.IERC20ABI))
if err != nil {
return 0, err
}
input, err := abi.Pack("transfer",
to,
amountIn,
)
if err != nil {
return 0, err
}
ctx := context.Background()
msg := ethereum.CallMsg{
From: from,
To: &token.Address,
Data: input,
}
estimation, err = ethClient.EstimateGas(ctx, msg)
if err != nil {
return 0, err
}
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}
increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
return uint64(increasedEstimation), nil
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}
func (s *TransferBridge) Send(sendArgs *TransactionBridge, verifiedAccount *account.SelectedExtKey) (types.Hash, error) {
return s.transactor.SendTransactionWithChainID(sendArgs.ChainID, *sendArgs.TransferTx, verifiedAccount)
}
func (s *TransferBridge) BuildTransaction(sendArgs *TransactionBridge) (*ethTypes.Transaction, transactions.UnlockNonceFunc, error) {
return s.transactor.ValidateAndBuildTransaction(sendArgs.ChainID, *sendArgs.TransferTx)
}
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func (s *TransferBridge) CalculateAmountOut(from, to *params.Network, amountIn *big.Int, symbol string) (*big.Int, error) {
return amountIn, nil
}
func (s *TransferBridge) GetContractAddress(network *params.Network, token *token.Token) *common.Address {
return nil
}