380 lines
9.0 KiB
Go
380 lines
9.0 KiB
Go
package bridge
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"math/big"
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"net/http"
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"strings"
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"time"
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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/accounts/abi/bind"
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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/celer"
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"github.com/status-im/status-go/eth-node/types"
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"github.com/status-im/status-go/rpc"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/services/wallet/bridge/cbridge"
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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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const baseURL = "https://cbridge-prod2.celer.app"
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const testBaseURL = "https://cbridge-v2-test.celer.network"
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type CBridgeTxArgs struct {
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transactions.SendTxArgs
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ChainID uint64 `json:"chainId"`
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Symbol string `json:"symbol"`
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Recipient common.Address `json:"recipient"`
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Amount *hexutil.Big `json:"amount"`
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}
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type CBridge struct {
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rpcClient *rpc.Client
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transactor *transactions.Transactor
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tokenManager *token.Manager
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prodTransferConfig *cbridge.GetTransferConfigsResponse
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testTransferConfig *cbridge.GetTransferConfigsResponse
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}
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func NewCbridge(rpcClient *rpc.Client, transactor *transactions.Transactor, tokenManager *token.Manager) *CBridge {
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return &CBridge{
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rpcClient: rpcClient,
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transactor: transactor,
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tokenManager: tokenManager,
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}
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}
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func (s *CBridge) Name() string {
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return "CBridge"
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}
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func (s *CBridge) estimateAmt(from, to *params.Network, amountIn *big.Int, symbol string) (*cbridge.EstimateAmtResponse, error) {
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client := &http.Client{
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Timeout: time.Second * 5,
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}
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base := baseURL
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if from.IsTest {
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base = testBaseURL
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}
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url := fmt.Sprintf(
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"%s/v2/estimateAmt?src_chain_id=%d&dst_chain_id=%d&token_symbol=%s&amt=%s&usr_addr=0xaa47c83316edc05cf9ff7136296b026c5de7eccd&slippage_tolerance=500",
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base,
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from.ChainID,
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to.ChainID,
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symbol,
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amountIn.String(),
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)
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, err
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer func() {
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if err := resp.Body.Close(); err != nil {
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fmt.Println("failed to close cbridge request body", "err", err)
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}
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}()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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var res cbridge.EstimateAmtResponse
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err = json.Unmarshal(body, &res)
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if err != nil {
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return nil, err
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}
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return &res, nil
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}
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func (s *CBridge) getTransferConfig(isTest bool) (*cbridge.GetTransferConfigsResponse, error) {
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if !isTest && s.prodTransferConfig != nil {
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return s.prodTransferConfig, nil
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}
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if isTest && s.testTransferConfig != nil {
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return s.testTransferConfig, nil
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}
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client := &http.Client{
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Timeout: time.Second * 5,
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}
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base := baseURL
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if isTest {
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base = testBaseURL
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}
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url := fmt.Sprintf("%s/v2/getTransferConfigs", base)
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, err
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer func() {
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if err := resp.Body.Close(); err != nil {
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fmt.Println("failed to close cbridge request body", "err", err)
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}
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}()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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var res cbridge.GetTransferConfigsResponse
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err = json.Unmarshal(body, &res)
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if err != nil {
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return nil, err
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}
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if isTest {
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s.testTransferConfig = &res
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} else {
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s.prodTransferConfig = &res
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}
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return &res, nil
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}
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func (s *CBridge) Can(from, to *params.Network, token *token.Token, balance *big.Int) (bool, error) {
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if from.ChainID == to.ChainID {
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return false, nil
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}
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transferConfig, err := s.getTransferConfig(from.IsTest)
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if err != nil {
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return false, err
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}
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if transferConfig.Err != nil {
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return false, errors.New(transferConfig.Err.Msg)
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}
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var fromAvailable *cbridge.Chain
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var toAvailable *cbridge.Chain
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for _, chain := range transferConfig.Chains {
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if uint64(chain.GetId()) == from.ChainID {
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fromAvailable = chain
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}
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if uint64(chain.GetId()) == to.ChainID {
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toAvailable = chain
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}
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}
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if fromAvailable == nil || toAvailable == nil {
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return false, nil
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}
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found := false
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if _, ok := transferConfig.ChainToken[fromAvailable.GetId()]; !ok {
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return false, nil
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}
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for _, tokenInfo := range transferConfig.ChainToken[fromAvailable.GetId()].Token {
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if tokenInfo.Token.Symbol == token.Symbol {
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found = true
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break
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}
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}
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if !found {
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return false, nil
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}
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found = false
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for _, tokenInfo := range transferConfig.ChainToken[toAvailable.GetId()].Token {
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if tokenInfo.Token.Symbol == token.Symbol {
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found = true
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break
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}
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}
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if !found {
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return false, nil
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}
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return true, nil
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}
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func (s *CBridge) 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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amt, err := s.estimateAmt(from, to, amountIn, token.Symbol)
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if err != nil {
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return nil, nil, err
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}
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baseFee, _ := new(big.Int).SetString(amt.BaseFee, 10)
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percFee, _ := new(big.Int).SetString(amt.PercFee, 10)
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return big.NewInt(0), new(big.Int).Add(baseFee, percFee), nil
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}
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func (s *CBridge) 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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var input []byte
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value := new(big.Int)
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abi, err := abi.JSON(strings.NewReader(celer.CelerABI))
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if err != nil {
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return 0, err
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}
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if token.IsNative() {
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input, err = abi.Pack("sendNative",
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to,
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amountIn,
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toNetwork.ChainID,
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uint64(time.Now().UnixMilli()),
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500,
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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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} else {
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input, err = abi.Pack("send",
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to,
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token.Address,
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amountIn,
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toNetwork.ChainID,
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uint64(time.Now().UnixMilli()),
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500,
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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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}
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contractAddress := s.GetContractAddress(fromNetwork, nil)
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if contractAddress == nil {
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return 0, errors.New("contract not found")
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}
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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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ctx := context.Background()
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if code, err := ethClient.PendingCodeAt(ctx, *contractAddress); err != nil {
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return 0, err
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} else if len(code) == 0 {
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return 0, bind.ErrNoCode
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}
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msg := ethereum.CallMsg{
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From: from,
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To: contractAddress,
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Value: value,
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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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increasedEstimation := float64(estimation) * IncreaseEstimatedGasFactor
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return uint64(increasedEstimation), nil
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}
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func (s *CBridge) GetContractAddress(network *params.Network, token *token.Token) *common.Address {
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transferConfig, err := s.getTransferConfig(network.IsTest)
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if err != nil {
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return nil
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}
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if transferConfig.Err != nil {
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return nil
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}
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for _, chain := range transferConfig.Chains {
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if uint64(chain.Id) == network.ChainID {
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addr := common.HexToAddress(chain.ContractAddr)
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return &addr
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}
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}
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return nil
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}
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func (s *CBridge) sendOrBuild(sendArgs *TransactionBridge, signerFn bind.SignerFn) (*ethTypes.Transaction, error) {
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fromNetwork := s.rpcClient.NetworkManager.Find(sendArgs.ChainID)
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if fromNetwork == nil {
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return nil, errors.New("network not found")
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}
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token := s.tokenManager.FindToken(fromNetwork, sendArgs.CbridgeTx.Symbol)
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if token == nil {
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return nil, errors.New("token not found")
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}
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addrs := s.GetContractAddress(fromNetwork, nil)
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if addrs == nil {
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return nil, errors.New("contract not found")
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}
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backend, err := s.rpcClient.EthClient(sendArgs.ChainID)
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if err != nil {
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return nil, err
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}
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contract, err := celer.NewCeler(*addrs, backend)
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if err != nil {
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return nil, err
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}
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txOpts := sendArgs.CbridgeTx.ToTransactOpts(signerFn)
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if token.IsNative() {
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return contract.SendNative(
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txOpts,
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sendArgs.CbridgeTx.Recipient,
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(*big.Int)(sendArgs.CbridgeTx.Amount),
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sendArgs.CbridgeTx.ChainID,
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uint64(time.Now().UnixMilli()),
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500,
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)
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}
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return contract.Send(
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txOpts,
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sendArgs.CbridgeTx.Recipient,
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token.Address,
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(*big.Int)(sendArgs.CbridgeTx.Amount),
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sendArgs.CbridgeTx.ChainID,
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uint64(time.Now().UnixMilli()),
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500,
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)
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}
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func (s *CBridge) Send(sendArgs *TransactionBridge, verifiedAccount *account.SelectedExtKey) (types.Hash, error) {
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tx, err := s.sendOrBuild(sendArgs, getSigner(sendArgs.ChainID, sendArgs.CbridgeTx.From, verifiedAccount))
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if err != nil {
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return types.HexToHash(""), err
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}
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return types.Hash(tx.Hash()), nil
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}
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func (s *CBridge) BuildTransaction(sendArgs *TransactionBridge) (*ethTypes.Transaction, error) {
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return s.sendOrBuild(sendArgs, nil)
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}
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func (s *CBridge) CalculateAmountOut(from, to *params.Network, amountIn *big.Int, symbol string) (*big.Int, error) {
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amt, err := s.estimateAmt(from, to, amountIn, symbol)
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if err != nil {
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return nil, err
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}
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if amt.Err != nil {
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return nil, err
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}
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amountOut, _ := new(big.Int).SetString(amt.EqValueTokenAmt, 10)
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return amountOut, nil
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}
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