feat: Waku v2 bridge

Issue #12610

vendor/github.com/status-im/status-go/services/wallet/bridge/transfer.go

@@ -0,0 +1,101 @@
+package bridge
+
+import (
+	"context"
+	"math/big"
+	"strings"
+
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/common"
+	ethTypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/status-im/status-go/account"
+	"github.com/status-im/status-go/contracts/ierc20"
+	"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 TransferBridge struct {
+	rpcClient  *rpc.Client
+	transactor *transactions.Transactor
+}
+
+func NewTransferBridge(rpcClient *rpc.Client, transactor *transactions.Transactor) *TransferBridge {
+	return &TransferBridge{rpcClient: rpcClient, transactor: transactor}
+}
+
+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) {
+	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
+		}
+
+	}
+	increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
+	return uint64(increasedEstimation), nil
+}
+
+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, error) {
+	return s.transactor.ValidateAndBuildTransaction(sendArgs.ChainID, *sendArgs.TransferTx)
+}
+
+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
+}