682 lines
22 KiB
Go
682 lines
22 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"
|
|
"github.com/status-im/status-go/contracts/community-tokens/mastertoken"
|
|
"github.com/status-im/status-go/contracts/community-tokens/ownertoken"
|
|
"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 (api *API) DeployOwnerToken(ctx context.Context, chainID uint64, ownerTokenParameters DeploymentParameters, masterTokenParameters DeploymentParameters, txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
|
|
err := ownerTokenParameters.Validate(false)
|
|
if err != nil {
|
|
return DeploymentDetails{}, err
|
|
}
|
|
|
|
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))
|
|
|
|
ethClient, err := api.s.manager.rpcClient.EthClient(chainID)
|
|
if err != nil {
|
|
log.Error(err.Error())
|
|
return DeploymentDetails{}, err
|
|
}
|
|
|
|
signerPubKey := []byte{}
|
|
|
|
address, tx, _, err := ownertoken.DeployOwnerToken(transactOpts, ethClient, ownerTokenParameters.Name,
|
|
ownerTokenParameters.Symbol, ownerTokenParameters.TokenURI,
|
|
masterTokenParameters.Name, masterTokenParameters.Symbol,
|
|
masterTokenParameters.TokenURI, 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{address.Hex(), 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
|
|
}
|
|
|
|
logMasterTokenCreatedSig := []byte("MasterTokenCreated(address)")
|
|
logMasterTokenCreatedSigHash := crypto.Keccak256Hash(logMasterTokenCreatedSig)
|
|
|
|
for _, vLog := range receipt.Logs {
|
|
if vLog.Topics[0].Hex() == logMasterTokenCreatedSigHash.Hex() {
|
|
ownerTokenABI, err := abi.JSON(strings.NewReader(ownertoken.OwnerTokenABI))
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
event := new(ownertoken.OwnerTokenMasterTokenCreated)
|
|
err = ownerTokenABI.UnpackIntoInterface(event, "MasterTokenCreated", vLog.Data)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return event.MasterToken.Hex(), nil
|
|
}
|
|
}
|
|
return "", fmt.Errorf("can't find master 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
|
|
}
|
|
|
|
address, tx, _, err := assets.DeployAssets(transactOpts, ethClient, deploymentParameters.Name,
|
|
deploymentParameters.Symbol, deploymentParameters.GetSupply())
|
|
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) {
|
|
gasAmount := uint64(2091605)
|
|
return gasAmount + uint64(float32(gasAmount)*0.1), nil
|
|
}
|
|
|
|
// Returns gas units + 10%
|
|
func (api *API) DeployAssetsEstimate(ctx context.Context) (uint64, error) {
|
|
gasAmount := uint64(957483)
|
|
return gasAmount + uint64(float32(gasAmount)*0.1), nil
|
|
}
|
|
|
|
// Returns gas units + 10%
|
|
func (api *API) DeployOwnerTokenEstimate(ctx context.Context) (uint64, error) {
|
|
ownerGasAmount := uint64(4389457)
|
|
return ownerGasAmount + uint64(float32(ownerGasAmount)*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) 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
|
|
}
|