feat: support erc-721 nft transfer.

core/eth/chain_nft.go

@@ -0,0 +1,45 @@
+package eth
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/coming-chat/wallet-SDK/core/base"
+)
+
+func (c *Chain) TransferNFT(sender, receiver string, nft *base.NFT) (*Transaction, error) {
+	return c.TransferNFTParams(sender, receiver, nft.Id, nft.ContractAddress, nft.Standard)
+}
+
+// TransferNFTParams
+// - param nftStandard: only support erc-721 now, else throw error unsupported nft type.
+func (c *Chain) TransferNFTParams(sender, receiver, nftId, nftContractAddress, nftStandard string) (txn *Transaction, err error) {
+	defer base.CatchPanicAndMapToBasicError(&err)
+
+	if strings.ToLower(nftStandard) != "erc-721" {
+		return nil, errors.New("unsupported nft type")
+	}
+	data, err := EncodeErc721TransferFrom(sender, receiver, nftId)
+	if err != nil {
+		return nil, err
+	}
+	gasPrice, err := c.SuggestGasPrice()
+	if err != nil {
+		return nil, err
+	}
+
+	msg := NewCallMsg()
+	msg.SetFrom(sender)
+	msg.SetTo(nftContractAddress)
+	msg.SetValue("0")
+	msg.SetGasPrice(gasPrice.Value)
+	msg.SetData(data)
+
+	gasLimit, err := c.EstimateGasLimit(msg)
+	if err != nil {
+		return nil, err
+	}
+	msg.SetGasLimit(gasLimit.Value)
+
+	return msg.TransferToTransaction(), nil
+}

core/eth/chain_nft_test.go

@@ -0,0 +1,35 @@
+package eth
+
+import (
+	"testing"
+
+	"github.com/coming-chat/wallet-SDK/core/testcase"
+	"github.com/stretchr/testify/require"
+)
+
+func TestChain_TransferNFT_Erc721(t *testing.T) {
+	mn := testcase.M1
+	sender, err := NewAccountWithMnemonic(mn)
+	require.Nil(t, err)
+
+	receiver := sender.Address()
+	nftId := "0"
+	nftContract := "0x199Dcb0132a66b05723882259832e240fF735810"
+	nftStandard := "erc-721"
+
+	chain := NewChainWithRpc("https://canary-testnet.bevm.io/")
+
+	txn, err := chain.TransferNFTParams(sender.Address(), receiver,
+		nftId, nftContract, nftStandard)
+	require.Nil(t, err)
+
+	signedTx, err := chain.BuildTransferTxWithAccount(sender, txn)
+	require.Nil(t, err)
+
+	run := false
+	if run {
+		txHash, err := chain.SendRawTransaction(signedTx.Value)
+		require.Nil(t, err)
+		t.Log(txHash)
+	}
+}

core/eth/ethchain_erc20.go

@@ -17,6 +17,8 @@ import (
 const (
 	// 合约 ABI json文件，查询ERC20 相关代币信息需要使用 ABI 文件
 	Erc20AbiStr = `[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"pauser","type":"address"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint8","name":"decimal","type":"uint8"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"new_operator","type":"address"},{"internalType":"address","name":"new_pauser","type":"address"}],"name":"changeUser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]`
+	// erc721 的 ABI 文件, 只支持 transferFrom 方法
+	Erc721Abi_TransferOnly = `[{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]`
 )
 
 // Deprecated: SdkBatchTokenBalance is deprecated. Please Use Chain.BatchFetchErc20TokenBalance() instead.

core/eth/types.go

@@ -140,6 +140,28 @@ func NewTransaction(nonce, gasPrice, gasLimit, to, value, data string) *Transact
 	return &Transaction{nonce, gasPrice, gasLimit, to, value, data, ""}
 }
 
+func NewTransactionNftTransfer(sender, receiver, gasPrice, gasLimit string, nft *base.NFT) *Transaction {
+	return NewTransactionNftTransferParams(sender, receiver, gasPrice, gasLimit, nft.Id, nft.ContractAddress, nft.Standard)
+}
+
+func NewTransactionNftTransferParams(sender, receiver, gasPrice, gasLimit, nftId, nftContractAddress, nftStandard string) *Transaction {
+	if strings.ToLower(nftStandard) != "erc-721" {
+		return nil
+	}
+	data, err := EncodeErc721TransferFrom(sender, receiver, nftId)
+	if err != nil {
+		return nil
+	}
+	return &Transaction{
+		Nonce:    "",
+		GasPrice: gasPrice,
+		GasLimit: gasLimit,
+		To:       nftContractAddress,
+		Value:    "0",
+		Data:     common.Bytes2Hex(data),
+	}
+}
+
 func NewTransactionFromHex(hexData string) (*Transaction, error) {
 	rawBytes, err := hex.DecodeString(hexData)
 	if err != nil {

core/eth/types_test.go

@@ -1,10 +1,26 @@
 package eth
 
 import (
+	"encoding/hex"
 	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
+func TestUtils_EncodeErc721TransferFrom(t *testing.T) {
+	sender := "0x151e446ca01b57e495a31d53bc622ac33bd7a0be"
+	receiver := "0x2c32bd5f7d3eab4bc9d968c90c82debb1bdcced9"
+	nftId := "1"
+
+	// Reference: https://scan-canary-testnet.bevm.io/tx/0x2c763fc26b1021340edc5614c7411a8f4d2220d22fecd805557fef4536268ef8
+	data, err := EncodeErc721TransferFrom(sender, receiver, nftId)
+	require.Nil(t, err)
+	dataHex := hex.EncodeToString(data)
+	require.Equal(t, dataHex,
+		"23b872dd000000000000000000000000151e446ca01b57e495a31d53bc622ac33bd7a0be0000000000000000000000002c32bd5f7d3eab4bc9d968c90c82debb1bdcced90000000000000000000000000000000000000000000000000000000000000001")
+}
+
 func TestNewTransactionFromHex(t *testing.T) {
 	type args struct {
 		hexData string

core/eth/utils.go

@@ -6,6 +6,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/coming-chat/wallet-SDK/core/base"
 	"github.com/ethereum/go-ethereum/accounts/abi"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -57,6 +58,20 @@ func EncodeErc20Approve(spender string, amount *big.Int) ([]byte, error) {
 	return EncodeContractData(Erc20AbiStr, ERC20_METHOD_APPROVE, common.HexToAddress(spender), amount)
 }
 
+func EncodeErc721TransferFrom(sender, receiver, nftId string) ([]byte, error) {
+	if !common.IsHexAddress(sender) || !common.IsHexAddress(receiver) {
+		return nil, base.ErrInvalidAddress
+	}
+	amtInt, ok := big.NewInt(0).SetString(nftId, 10)
+	if !ok {
+		return nil, base.ErrInvalidAmount
+	}
+	return EncodeContractData(Erc721Abi_TransferOnly, "transferFrom",
+		common.HexToAddress(sender),
+		common.HexToAddress(receiver),
+		amtInt)
+}
+
 func EncodeContractData(abiString, method string, params ...interface{}) ([]byte, error) {
 	parsedAbi, err := abi.JSON(strings.NewReader(abiString))
 	if err != nil {