status-go/services/communitytokens/api.go

892 lines
29 KiB
Go

package communitytokens
import (
"context"
"errors"
"fmt"
"math/big"
"strings"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/status-im/status-go/contracts/community-tokens/assets"
"github.com/status-im/status-go/contracts/community-tokens/collectibles"
communitytokendeployer "github.com/status-im/status-go/contracts/community-tokens/deployer"
"github.com/status-im/status-go/contracts/community-tokens/mastertoken"
"github.com/status-im/status-go/contracts/community-tokens/ownertoken"
communityownertokenregistry "github.com/status-im/status-go/contracts/community-tokens/registry"
"github.com/status-im/status-go/eth-node/crypto"
"github.com/status-im/status-go/protocol/protobuf"
"github.com/status-im/status-go/services/utils"
"github.com/status-im/status-go/services/wallet/bigint"
wcommon "github.com/status-im/status-go/services/wallet/common"
"github.com/status-im/status-go/transactions"
)
func NewAPI(s *Service) *API {
return &API{
s: s,
}
}
type API struct {
s *Service
}
type DeploymentDetails struct {
ContractAddress string `json:"contractAddress"`
TransactionHash string `json:"transactionHash"`
}
const maxSupply = 999999999
type DeploymentParameters struct {
Name string `json:"name"`
Symbol string `json:"symbol"`
Supply *bigint.BigInt `json:"supply"`
InfiniteSupply bool `json:"infiniteSupply"`
Transferable bool `json:"transferable"`
RemoteSelfDestruct bool `json:"remoteSelfDestruct"`
TokenURI string `json:"tokenUri"`
OwnerTokenAddress string `json:"ownerTokenAddress"`
MasterTokenAddress string `json:"masterTokenAddress"`
}
func (d *DeploymentParameters) GetSupply() *big.Int {
if d.InfiniteSupply {
return d.GetInfiniteSupply()
}
return d.Supply.Int
}
// infinite supply for ERC721 is 2^256-1
func (d *DeploymentParameters) GetInfiniteSupply() *big.Int {
return GetInfiniteSupply()
}
func GetInfiniteSupply() *big.Int {
max := new(big.Int).Exp(big.NewInt(2), big.NewInt(256), nil)
max.Sub(max, big.NewInt(1))
return max
}
func (d *DeploymentParameters) Validate(isAsset bool) error {
if len(d.Name) <= 0 {
return errors.New("empty collectible name")
}
if len(d.Symbol) <= 0 {
return errors.New("empty collectible symbol")
}
var maxForType = big.NewInt(maxSupply)
if isAsset {
assetMultiplier, _ := big.NewInt(0).SetString("1000000000000000000", 10)
maxForType = maxForType.Mul(maxForType, assetMultiplier)
}
if !d.InfiniteSupply && (d.Supply.Cmp(big.NewInt(0)) < 0 || d.Supply.Cmp(maxForType) > 0) {
return fmt.Errorf("wrong supply value: %v", d.Supply)
}
return nil
}
func (api *API) DeployCollectibles(ctx context.Context, chainID uint64, deploymentParameters DeploymentParameters, txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
err := deploymentParameters.Validate(false)
if err != nil {
return DeploymentDetails{}, err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
log.Error(err.Error())
return DeploymentDetails{}, err
}
address, tx, _, err := collectibles.DeployCollectibles(transactOpts, ethClient, deploymentParameters.Name,
deploymentParameters.Symbol, deploymentParameters.GetSupply(),
deploymentParameters.RemoteSelfDestruct, deploymentParameters.Transferable,
deploymentParameters.TokenURI, common.HexToAddress(deploymentParameters.OwnerTokenAddress),
common.HexToAddress(deploymentParameters.MasterTokenAddress))
if err != nil {
log.Error(err.Error())
return DeploymentDetails{}, err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.DeployCommunityToken,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return DeploymentDetails{}, err
}
return DeploymentDetails{address.Hex(), tx.Hash().Hex()}, nil
}
func decodeSignature(sig []byte) (r [32]byte, s [32]byte, v uint8, err error) {
if len(sig) != crypto.SignatureLength {
return [32]byte{}, [32]byte{}, 0, fmt.Errorf("wrong size for signature: got %d, want %d", len(sig), crypto.SignatureLength)
}
copy(r[:], sig[:32])
copy(s[:], sig[32:64])
v = sig[64] + 27
return r, s, v, nil
}
func prepareDeploymentSignatureStruct(signature string, communityID string, addressFrom common.Address) (communitytokendeployer.CommunityTokenDeployerDeploymentSignature, error) {
r, s, v, err := decodeSignature(common.FromHex(signature))
if err != nil {
return communitytokendeployer.CommunityTokenDeployerDeploymentSignature{}, err
}
communityEthAddress, err := convert33BytesPubKeyToEthAddress(communityID)
if err != nil {
return communitytokendeployer.CommunityTokenDeployerDeploymentSignature{}, err
}
communitySignature := communitytokendeployer.CommunityTokenDeployerDeploymentSignature{
V: v,
R: r,
S: s,
Deployer: addressFrom,
Signer: communityEthAddress,
}
return communitySignature, nil
}
func (api *API) DeployOwnerToken(ctx context.Context, chainID uint64,
ownerTokenParameters DeploymentParameters, masterTokenParameters DeploymentParameters,
signature string, communityID string, signerPubKey string,
txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
err := ownerTokenParameters.Validate(false)
if err != nil {
return DeploymentDetails{}, err
}
if len(signerPubKey) <= 0 {
return DeploymentDetails{}, fmt.Errorf("signerPubKey is empty")
}
err = masterTokenParameters.Validate(false)
if err != nil {
return DeploymentDetails{}, err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
deployerContractInst, err := api.NewCommunityTokenDeployerInstance(chainID)
if err != nil {
return DeploymentDetails{}, err
}
ownerTokenConfig := communitytokendeployer.CommunityTokenDeployerTokenConfig{
Name: ownerTokenParameters.Name,
Symbol: ownerTokenParameters.Symbol,
BaseURI: ownerTokenParameters.TokenURI,
}
masterTokenConfig := communitytokendeployer.CommunityTokenDeployerTokenConfig{
Name: masterTokenParameters.Name,
Symbol: masterTokenParameters.Symbol,
BaseURI: masterTokenParameters.TokenURI,
}
communitySignature, err := prepareDeploymentSignatureStruct(signature, communityID, common.Address(txArgs.From))
if err != nil {
return DeploymentDetails{}, err
}
log.Debug("Signature:", communitySignature)
tx, err := deployerContractInst.Deploy(transactOpts, ownerTokenConfig, masterTokenConfig, communitySignature, common.FromHex(signerPubKey))
if err != nil {
log.Error(err.Error())
return DeploymentDetails{}, err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.DeployOwnerToken,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return DeploymentDetails{}, err
}
return DeploymentDetails{"", tx.Hash().Hex()}, nil
}
func (api *API) GetMasterTokenContractAddressFromHash(ctx context.Context, chainID uint64, txHash string) (string, error) {
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
return "", err
}
receipt, err := ethClient.TransactionReceipt(ctx, common.HexToHash(txHash))
if err != nil {
return "", err
}
deployerContractInst, err := api.NewCommunityTokenDeployerInstance(chainID)
if err != nil {
return "", err
}
logMasterTokenCreatedSig := []byte("DeployMasterToken(address)")
logMasterTokenCreatedSigHash := crypto.Keccak256Hash(logMasterTokenCreatedSig)
for _, vLog := range receipt.Logs {
if vLog.Topics[0].Hex() == logMasterTokenCreatedSigHash.Hex() {
event, err := deployerContractInst.ParseDeployMasterToken(*vLog)
if err != nil {
return "", err
}
return event.Arg0.Hex(), nil
}
}
return "", fmt.Errorf("can't find master token address in transaction: %v", txHash)
}
func (api *API) GetOwnerTokenContractAddressFromHash(ctx context.Context, chainID uint64, txHash string) (string, error) {
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
return "", err
}
receipt, err := ethClient.TransactionReceipt(ctx, common.HexToHash(txHash))
if err != nil {
return "", err
}
deployerContractInst, err := api.NewCommunityTokenDeployerInstance(chainID)
if err != nil {
return "", err
}
logOwnerTokenCreatedSig := []byte("DeployOwnerToken(address)")
logOwnerTokenCreatedSigHash := crypto.Keccak256Hash(logOwnerTokenCreatedSig)
for _, vLog := range receipt.Logs {
if vLog.Topics[0].Hex() == logOwnerTokenCreatedSigHash.Hex() {
event, err := deployerContractInst.ParseDeployOwnerToken(*vLog)
if err != nil {
return "", err
}
return event.Arg0.Hex(), nil
}
}
return "", fmt.Errorf("can't find owner token address in transaction: %v", txHash)
}
func (api *API) DeployAssets(ctx context.Context, chainID uint64, deploymentParameters DeploymentParameters, txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
err := deploymentParameters.Validate(true)
if err != nil {
return DeploymentDetails{}, err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
log.Error(err.Error())
return DeploymentDetails{}, err
}
const decimals = 18
address, tx, _, err := assets.DeployAssets(transactOpts, ethClient, deploymentParameters.Name,
deploymentParameters.Symbol, decimals, deploymentParameters.GetSupply(),
deploymentParameters.TokenURI,
common.HexToAddress(deploymentParameters.OwnerTokenAddress),
common.HexToAddress(deploymentParameters.MasterTokenAddress))
if err != nil {
log.Error(err.Error())
return DeploymentDetails{}, err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.DeployCommunityToken,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return DeploymentDetails{}, err
}
return DeploymentDetails{address.Hex(), tx.Hash().Hex()}, nil
}
// Returns gas units + 10%
func (api *API) DeployCollectiblesEstimate(ctx context.Context) (uint64, error) {
// TODO investigate why the code below does not return correct values
/*ethClient, err := api.s.manager.rpcClient.EthClient(420)
if err != nil {
log.Error(err.Error())
return 0, err
}
collectiblesABI, err := abi.JSON(strings.NewReader(collectibles.CollectiblesABI))
if err != nil {
return 0, err
}
data, err := collectiblesABI.Pack("", "name", "SYMBOL", big.NewInt(20), true, false, "tokenUriwhcih is very long asdkfjlsdkjflk",
common.HexToAddress("0x77b48394c650520012795a1a25696d7eb542d110"), common.HexToAddress("0x77b48394c650520012795a1a25696d7eb542d110"))
if err != nil {
return 0, err
}
callMsg := ethereum.CallMsg{
From: common.HexToAddress("0x77b48394c650520012795a1a25696d7eb542d110"),
To: nil,
Value: big.NewInt(0),
Data: data,
}
estimate, err := ethClient.EstimateGas(ctx, callMsg)
if err != nil {
return 0, err
}
return estimate + uint64(float32(estimate)*0.1), nil*/
// TODO compute fee dynamically
// the code above returns too low fees, need to investigate
gasAmount := uint64(2500000)
return gasAmount + uint64(float32(gasAmount)*0.1), nil
}
// Returns gas units + 10%
func (api *API) DeployAssetsEstimate(ctx context.Context) (uint64, error) {
// TODO compute fee dynamically
gasAmount := uint64(1500000)
return gasAmount + uint64(float32(gasAmount)*0.1), nil
}
func (api *API) DeployOwnerTokenEstimate(ctx context.Context, chainID uint64, fromAddress string,
ownerTokenParameters DeploymentParameters, masterTokenParameters DeploymentParameters,
signature string, communityID string, signerPubKey string) (uint64, error) {
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
log.Error(err.Error())
return 0, err
}
deployerAddress, err := communitytokendeployer.ContractAddress(chainID)
if err != nil {
return 0, err
}
deployerABI, err := abi.JSON(strings.NewReader(communitytokendeployer.CommunityTokenDeployerABI))
if err != nil {
return 0, err
}
ownerTokenConfig := communitytokendeployer.CommunityTokenDeployerTokenConfig{
Name: ownerTokenParameters.Name,
Symbol: ownerTokenParameters.Symbol,
BaseURI: ownerTokenParameters.TokenURI,
}
masterTokenConfig := communitytokendeployer.CommunityTokenDeployerTokenConfig{
Name: masterTokenParameters.Name,
Symbol: masterTokenParameters.Symbol,
BaseURI: masterTokenParameters.TokenURI,
}
communitySignature, err := prepareDeploymentSignatureStruct(signature, communityID, common.HexToAddress(fromAddress))
if err != nil {
return 0, err
}
data, err := deployerABI.Pack("deploy", ownerTokenConfig, masterTokenConfig, communitySignature, common.FromHex(signerPubKey))
if err != nil {
return 0, err
}
toAddr := deployerAddress
fromAddr := common.HexToAddress(fromAddress)
callMsg := ethereum.CallMsg{
From: fromAddr,
To: &toAddr,
Value: big.NewInt(0),
Data: data,
}
estimate, err := ethClient.EstimateGas(ctx, callMsg)
if err != nil {
return 0, err
}
return estimate + uint64(float32(estimate)*0.1), nil
}
func (api *API) NewMasterTokenInstance(chainID uint64, contractAddress string) (*mastertoken.MasterToken, error) {
backend, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
return nil, err
}
return mastertoken.NewMasterToken(common.HexToAddress(contractAddress), backend)
}
func (api *API) NewOwnerTokenInstance(chainID uint64, contractAddress string) (*ownertoken.OwnerToken, error) {
return api.s.NewOwnerTokenInstance(chainID, contractAddress)
}
func (api *API) NewCommunityTokenDeployerInstance(chainID uint64) (*communitytokendeployer.CommunityTokenDeployer, error) {
return api.s.manager.NewCommunityTokenDeployerInstance(chainID)
}
func (api *API) NewCommunityOwnerTokenRegistryInstance(chainID uint64, contractAddress string) (*communityownertokenregistry.CommunityOwnerTokenRegistry, error) {
return api.s.NewCommunityOwnerTokenRegistryInstance(chainID, contractAddress)
}
func (api *API) NewCollectiblesInstance(chainID uint64, contractAddress string) (*collectibles.Collectibles, error) {
return api.s.manager.NewCollectiblesInstance(chainID, contractAddress)
}
func (api *API) NewAssetsInstance(chainID uint64, contractAddress string) (*assets.Assets, error) {
return api.s.manager.NewAssetsInstance(chainID, contractAddress)
}
// if we want to mint 2 tokens to addresses ["a", "b"] we need to mint
// twice to every address - we need to send to smart contract table ["a", "a", "b", "b"]
func (api *API) multiplyWalletAddresses(amount *bigint.BigInt, contractAddresses []string) []string {
var totalAddresses []string
for i := big.NewInt(1); i.Cmp(amount.Int) <= 0; {
totalAddresses = append(totalAddresses, contractAddresses...)
i.Add(i, big.NewInt(1))
}
return totalAddresses
}
func (api *API) PrepareMintCollectiblesData(walletAddresses []string, amount *bigint.BigInt) []common.Address {
totalAddresses := api.multiplyWalletAddresses(amount, walletAddresses)
var usersAddresses = []common.Address{}
for _, k := range totalAddresses {
usersAddresses = append(usersAddresses, common.HexToAddress(k))
}
return usersAddresses
}
// Universal minting function for every type of token.
func (api *API) MintTokens(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, walletAddresses []string, amount *bigint.BigInt) (string, error) {
err := api.ValidateWalletsAndAmounts(walletAddresses, amount)
if err != nil {
return "", err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
contractInst, err := NewTokenInstance(api, chainID, contractAddress)
if err != nil {
return "", err
}
tx, err := contractInst.Mint(transactOpts, walletAddresses, amount)
if err != nil {
return "", err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.AirdropCommunityToken,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return "", err
}
return tx.Hash().Hex(), nil
}
func (api *API) EstimateMintTokens(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
tokenType, err := api.s.db.GetTokenType(chainID, contractAddress)
if err != nil {
return 0, err
}
switch tokenType {
case protobuf.CommunityTokenType_ERC721:
return api.EstimateMintCollectibles(ctx, chainID, contractAddress, fromAddress, walletAddresses, amount)
case protobuf.CommunityTokenType_ERC20:
return api.EstimateMintAssets(ctx, chainID, contractAddress, fromAddress, walletAddresses, amount)
default:
return 0, fmt.Errorf("unknown token type: %v", tokenType)
}
}
func (api *API) EstimateMintCollectibles(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
err := api.ValidateWalletsAndAmounts(walletAddresses, amount)
if err != nil {
return 0, err
}
usersAddresses := api.PrepareMintCollectiblesData(walletAddresses, amount)
return api.estimateMethod(ctx, chainID, contractAddress, fromAddress, "mintTo", usersAddresses)
}
func (api *API) PrepareMintAssetsData(walletAddresses []string, amount *bigint.BigInt) ([]common.Address, []*big.Int) {
var usersAddresses = []common.Address{}
var amountsList = []*big.Int{}
for _, k := range walletAddresses {
usersAddresses = append(usersAddresses, common.HexToAddress(k))
amountsList = append(amountsList, amount.Int)
}
return usersAddresses, amountsList
}
// Estimate MintAssets cost.
func (api *API) EstimateMintAssets(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
err := api.ValidateWalletsAndAmounts(walletAddresses, amount)
if err != nil {
return 0, err
}
usersAddresses, amountsList := api.PrepareMintAssetsData(walletAddresses, amount)
return api.estimateMethod(ctx, chainID, contractAddress, fromAddress, "mintTo", usersAddresses, amountsList)
}
// This is only ERC721 function
func (api *API) RemoteDestructedAmount(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
callOpts := &bind.CallOpts{Context: ctx, Pending: false}
contractInst, err := api.NewCollectiblesInstance(chainID, contractAddress)
if err != nil {
return nil, err
}
// total supply = airdropped only (w/o burnt)
totalSupply, err := contractInst.TotalSupply(callOpts)
if err != nil {
return nil, err
}
// minted = all created tokens (airdropped and remotely destructed)
mintedCount, err := contractInst.MintedCount(callOpts)
if err != nil {
return nil, err
}
var res = new(big.Int)
res.Sub(mintedCount, totalSupply)
return &bigint.BigInt{Int: res}, nil
}
// This is only ERC721 function
func (api *API) RemoteBurn(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, tokenIds []*bigint.BigInt) (string, error) {
err := api.validateTokens(tokenIds)
if err != nil {
return "", err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
var tempTokenIds []*big.Int
for _, v := range tokenIds {
tempTokenIds = append(tempTokenIds, v.Int)
}
contractInst, err := NewTokenInstance(api, chainID, contractAddress)
if err != nil {
return "", err
}
tx, err := contractInst.RemoteBurn(transactOpts, tempTokenIds)
if err != nil {
return "", err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.RemoteDestructCollectible,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return "", err
}
return tx.Hash().Hex(), nil
}
// This is only ERC721 function
func (api *API) EstimateRemoteBurn(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, tokenIds []*bigint.BigInt) (uint64, error) {
err := api.validateTokens(tokenIds)
if err != nil {
return 0, err
}
var tempTokenIds []*big.Int
for _, v := range tokenIds {
tempTokenIds = append(tempTokenIds, v.Int)
}
return api.estimateMethod(ctx, chainID, contractAddress, fromAddress, "remoteBurn", tempTokenIds)
}
func (api *API) GetCollectiblesContractInstance(chainID uint64, contractAddress string) (*collectibles.Collectibles, error) {
return api.s.manager.GetCollectiblesContractInstance(chainID, contractAddress)
}
func (api *API) GetAssetContractInstance(chainID uint64, contractAddress string) (*assets.Assets, error) {
return api.s.manager.GetAssetContractInstance(chainID, contractAddress)
}
func (api *API) RemainingSupply(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
tokenType, err := api.s.db.GetTokenType(chainID, contractAddress)
if err != nil {
return nil, err
}
switch tokenType {
case protobuf.CommunityTokenType_ERC721:
return api.remainingCollectiblesSupply(ctx, chainID, contractAddress)
case protobuf.CommunityTokenType_ERC20:
return api.remainingAssetsSupply(ctx, chainID, contractAddress)
default:
return nil, fmt.Errorf("unknown token type: %v", tokenType)
}
}
// RemainingSupply = MaxSupply - MintedCount
func (api *API) remainingCollectiblesSupply(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
callOpts := &bind.CallOpts{Context: ctx, Pending: false}
contractInst, err := api.NewCollectiblesInstance(chainID, contractAddress)
if err != nil {
return nil, err
}
maxSupply, err := contractInst.MaxSupply(callOpts)
if err != nil {
return nil, err
}
mintedCount, err := contractInst.MintedCount(callOpts)
if err != nil {
return nil, err
}
var res = new(big.Int)
res.Sub(maxSupply, mintedCount)
return &bigint.BigInt{Int: res}, nil
}
// RemainingSupply = MaxSupply - TotalSupply
func (api *API) remainingAssetsSupply(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
callOpts := &bind.CallOpts{Context: ctx, Pending: false}
contractInst, err := api.NewAssetsInstance(chainID, contractAddress)
if err != nil {
return nil, err
}
maxSupply, err := contractInst.MaxSupply(callOpts)
if err != nil {
return nil, err
}
totalSupply, err := contractInst.TotalSupply(callOpts)
if err != nil {
return nil, err
}
var res = new(big.Int)
res.Sub(maxSupply, totalSupply)
return &bigint.BigInt{Int: res}, nil
}
func (api *API) maxSupplyCollectibles(ctx context.Context, chainID uint64, contractAddress string) (*big.Int, error) {
callOpts := &bind.CallOpts{Context: ctx, Pending: false}
contractInst, err := api.NewCollectiblesInstance(chainID, contractAddress)
if err != nil {
return nil, err
}
return contractInst.MaxSupply(callOpts)
}
func (api *API) maxSupplyAssets(ctx context.Context, chainID uint64, contractAddress string) (*big.Int, error) {
callOpts := &bind.CallOpts{Context: ctx, Pending: false}
contractInst, err := api.NewAssetsInstance(chainID, contractAddress)
if err != nil {
return nil, err
}
return contractInst.MaxSupply(callOpts)
}
func (api *API) maxSupply(ctx context.Context, chainID uint64, contractAddress string) (*big.Int, error) {
tokenType, err := api.s.db.GetTokenType(chainID, contractAddress)
if err != nil {
return nil, err
}
switch tokenType {
case protobuf.CommunityTokenType_ERC721:
return api.maxSupplyCollectibles(ctx, chainID, contractAddress)
case protobuf.CommunityTokenType_ERC20:
return api.maxSupplyAssets(ctx, chainID, contractAddress)
default:
return nil, fmt.Errorf("unknown token type: %v", tokenType)
}
}
func (api *API) prepareNewMaxSupply(ctx context.Context, chainID uint64, contractAddress string, burnAmount *bigint.BigInt) (*big.Int, error) {
maxSupply, err := api.maxSupply(ctx, chainID, contractAddress)
if err != nil {
return nil, err
}
var newMaxSupply = new(big.Int)
newMaxSupply.Sub(maxSupply, burnAmount.Int)
return newMaxSupply, nil
}
func (api *API) Burn(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, burnAmount *bigint.BigInt) (string, error) {
err := api.validateBurnAmount(ctx, burnAmount, chainID, contractAddress)
if err != nil {
return "", err
}
transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.s.accountsManager, api.s.config.KeyStoreDir, txArgs.From, password))
newMaxSupply, err := api.prepareNewMaxSupply(ctx, chainID, contractAddress, burnAmount)
if err != nil {
return "", err
}
contractInst, err := NewTokenInstance(api, chainID, contractAddress)
if err != nil {
return "", err
}
tx, err := contractInst.SetMaxSupply(transactOpts, newMaxSupply)
if err != nil {
return "", err
}
err = api.s.pendingTracker.TrackPendingTransaction(
wcommon.ChainID(chainID),
tx.Hash(),
common.Address(txArgs.From),
transactions.BurnCommunityToken,
transactions.AutoDelete,
)
if err != nil {
log.Error("TrackPendingTransaction error", "error", err)
return "", err
}
return tx.Hash().Hex(), nil
}
func (api *API) EstimateBurn(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, burnAmount *bigint.BigInt) (uint64, error) {
err := api.validateBurnAmount(ctx, burnAmount, chainID, contractAddress)
if err != nil {
return 0, err
}
newMaxSupply, err := api.prepareNewMaxSupply(ctx, chainID, contractAddress, burnAmount)
if err != nil {
return 0, err
}
return api.estimateMethod(ctx, chainID, contractAddress, fromAddress, "setMaxSupply", newMaxSupply)
}
func (api *API) ValidateWalletsAndAmounts(walletAddresses []string, amount *bigint.BigInt) error {
if len(walletAddresses) == 0 {
return errors.New("wallet addresses list is empty")
}
if amount.Cmp(big.NewInt(0)) <= 0 {
return errors.New("amount is <= 0")
}
return nil
}
func (api *API) validateTokens(tokenIds []*bigint.BigInt) error {
if len(tokenIds) == 0 {
return errors.New("token list is empty")
}
return nil
}
func (api *API) validateBurnAmount(ctx context.Context, burnAmount *bigint.BigInt, chainID uint64, contractAddress string) error {
if burnAmount.Cmp(big.NewInt(0)) <= 0 {
return errors.New("burnAmount is less than 0")
}
remainingSupply, err := api.RemainingSupply(ctx, chainID, contractAddress)
if err != nil {
return err
}
if burnAmount.Cmp(remainingSupply.Int) > 1 {
return errors.New("burnAmount is bigger than remaining amount")
}
return nil
}
func (api *API) estimateMethod(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, methodName string, args ...interface{}) (uint64, error) {
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
if err != nil {
log.Error(err.Error())
return 0, err
}
contractInst, err := NewTokenInstance(api, chainID, contractAddress)
if err != nil {
return 0, err
}
data, err := contractInst.PackMethod(ctx, methodName, args...)
if err != nil {
return 0, err
}
toAddr := common.HexToAddress(contractAddress)
fromAddr := common.HexToAddress(fromAddress)
callMsg := ethereum.CallMsg{
From: fromAddr,
To: &toAddr,
Value: big.NewInt(0),
Data: data,
}
estimate, err := ethClient.EstimateGas(ctx, callMsg)
if err != nil {
return 0, err
}
return estimate + uint64(float32(estimate)*0.1), nil
}
// Gets signer public key from smart contract with a given chainId and address
func (api *API) GetSignerPubKey(ctx context.Context, chainID uint64, contractAddress string) (string, error) {
return api.s.GetSignerPubKey(ctx, chainID, contractAddress)
}
// Gets signer public key directly from deployer contract
func (api *API) SafeGetSignerPubKey(ctx context.Context, chainID uint64, communityID string) (string, error) {
return api.s.SafeGetSignerPubKey(ctx, chainID, communityID)
}
// Gets owner token contract address from deployer contract
func (api *API) SafeGetOwnerTokenAddress(ctx context.Context, chainID uint64, communityID string) (string, error) {
return api.s.SafeGetOwnerTokenAddress(ctx, chainID, communityID)
}
func (api *API) SetSignerPubKey(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, newSignerPubKey string) (string, error) {
return api.s.SetSignerPubKey(ctx, chainID, contractAddress, txArgs, password, newSignerPubKey)
}
func (api *API) EstimateSetSignerPubKey(ctx context.Context, chainID uint64, contractAddress string, fromAddress string, newSignerPubKey string) (uint64, error) {
if len(newSignerPubKey) <= 0 {
return 0, fmt.Errorf("signerPubKey is empty")
}
return api.estimateMethod(ctx, chainID, contractAddress, fromAddress, "setSignerPublicKey", newSignerPubKey)
}