705 lines
23 KiB
Go
705 lines
23 KiB
Go
package collectibles
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"math/big"
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"strings"
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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/core/types"
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"github.com/ethereum/go-ethereum/log"
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"github.com/status-im/status-go/account"
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"github.com/status-im/status-go/contracts/assets"
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"github.com/status-im/status-go/contracts/collectibles"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/protocol/protobuf"
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"github.com/status-im/status-go/rpc"
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"github.com/status-im/status-go/services/rpcfilters"
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"github.com/status-im/status-go/services/utils"
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"github.com/status-im/status-go/services/wallet/bigint"
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"github.com/status-im/status-go/transactions"
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)
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func NewAPI(rpcClient *rpc.Client, accountsManager *account.GethManager, rpcFiltersSrvc *rpcfilters.Service, config *params.NodeConfig, appDb *sql.DB) *API {
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return &API{
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RPCClient: rpcClient,
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accountsManager: accountsManager,
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rpcFiltersSrvc: rpcFiltersSrvc,
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config: config,
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db: NewCommunityTokensDatabase(appDb),
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}
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}
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type API struct {
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RPCClient *rpc.Client
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accountsManager *account.GethManager
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rpcFiltersSrvc *rpcfilters.Service
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config *params.NodeConfig
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db *Database
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}
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type DeploymentDetails struct {
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ContractAddress string `json:"contractAddress"`
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TransactionHash string `json:"transactionHash"`
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}
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const maxSupply = 999999999
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type DeploymentParameters struct {
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Name string `json:"name"`
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Symbol string `json:"symbol"`
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Supply *bigint.BigInt `json:"supply"`
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InfiniteSupply bool `json:"infiniteSupply"`
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Transferable bool `json:"transferable"`
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RemoteSelfDestruct bool `json:"remoteSelfDestruct"`
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TokenURI string `json:"tokenUri"`
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}
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func (d *DeploymentParameters) GetSupply() *big.Int {
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if d.InfiniteSupply {
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return d.GetInfiniteSupply()
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}
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return d.Supply.Int
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}
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// infinite supply for ERC721 is 2^256-1
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func (d *DeploymentParameters) GetInfiniteSupply() *big.Int {
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max := new(big.Int).Exp(big.NewInt(2), big.NewInt(256), nil)
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max.Sub(max, big.NewInt(1))
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return max
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}
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func (d *DeploymentParameters) Validate(isAsset bool) error {
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if len(d.Name) <= 0 {
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return errors.New("empty collectible name")
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}
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if len(d.Symbol) <= 0 {
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return errors.New("empty collectible symbol")
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}
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var maxForType = big.NewInt(maxSupply)
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if isAsset {
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assetMultiplier, _ := big.NewInt(0).SetString("1000000000000000000", 10)
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maxForType = maxForType.Mul(maxForType, assetMultiplier)
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}
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if !d.InfiniteSupply && (d.Supply.Cmp(big.NewInt(0)) < 0 || d.Supply.Cmp(maxForType) > 0) {
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return fmt.Errorf("wrong supply value: %v", d.Supply)
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}
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return nil
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}
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func (api *API) DeployCollectibles(ctx context.Context, chainID uint64, deploymentParameters DeploymentParameters, txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
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err := deploymentParameters.Validate(false)
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if err != nil {
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return DeploymentDetails{}, err
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}
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transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
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ethClient, err := api.RPCClient.EthClient(chainID)
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if err != nil {
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log.Error(err.Error())
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return DeploymentDetails{}, err
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}
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address, tx, _, err := collectibles.DeployCollectibles(transactOpts, ethClient, deploymentParameters.Name,
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deploymentParameters.Symbol, deploymentParameters.GetSupply(),
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deploymentParameters.RemoteSelfDestruct, deploymentParameters.Transferable,
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deploymentParameters.TokenURI)
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if err != nil {
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log.Error(err.Error())
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return DeploymentDetails{}, err
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}
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go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
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Hash: tx.Hash(),
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Type: string(transactions.DeployCommunityToken),
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From: common.Address(txArgs.From),
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ChainID: chainID,
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})
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return DeploymentDetails{address.Hex(), tx.Hash().Hex()}, nil
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}
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func (api *API) DeployAssets(ctx context.Context, chainID uint64, deploymentParameters DeploymentParameters, txArgs transactions.SendTxArgs, password string) (DeploymentDetails, error) {
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err := deploymentParameters.Validate(true)
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if err != nil {
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return DeploymentDetails{}, err
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}
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transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
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ethClient, err := api.RPCClient.EthClient(chainID)
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if err != nil {
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log.Error(err.Error())
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return DeploymentDetails{}, err
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}
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address, tx, _, err := assets.DeployAssets(transactOpts, ethClient, deploymentParameters.Name,
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deploymentParameters.Symbol, deploymentParameters.GetSupply())
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if err != nil {
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log.Error(err.Error())
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return DeploymentDetails{}, err
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}
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go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
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Hash: tx.Hash(),
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Type: string(transactions.DeployCommunityToken),
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From: common.Address(txArgs.From),
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ChainID: chainID,
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})
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return DeploymentDetails{address.Hex(), tx.Hash().Hex()}, nil
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}
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// Returns gas units + 10%
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func (api *API) DeployCollectiblesEstimate(ctx context.Context) (uint64, error) {
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gasAmount := uint64(1960645)
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return gasAmount + uint64(float32(gasAmount)*0.1), nil
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}
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// Returns gas units + 10%
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func (api *API) DeployAssetsEstimate(ctx context.Context) (uint64, error) {
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gasAmount := uint64(957483)
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return gasAmount + uint64(float32(gasAmount)*0.1), nil
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}
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func (api *API) newCollectiblesInstance(chainID uint64, contractAddress string) (*collectibles.Collectibles, error) {
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backend, err := api.RPCClient.EthClient(chainID)
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if err != nil {
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return nil, err
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}
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return collectibles.NewCollectibles(common.HexToAddress(contractAddress), backend)
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}
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func (api *API) newAssetsInstance(chainID uint64, contractAddress string) (*assets.Assets, error) {
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backend, err := api.RPCClient.EthClient(chainID)
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if err != nil {
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return nil, err
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}
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return assets.NewAssets(common.HexToAddress(contractAddress), backend)
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}
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// if we want to mint 2 tokens to addresses ["a", "b"] we need to mint
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// twice to every address - we need to send to smart contract table ["a", "a", "b", "b"]
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func (api *API) multiplyWalletAddresses(amount *bigint.BigInt, contractAddresses []string) []string {
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var totalAddresses []string
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for i := big.NewInt(1); i.Cmp(amount.Int) <= 0; {
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totalAddresses = append(totalAddresses, contractAddresses...)
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i.Add(i, big.NewInt(1))
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}
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return totalAddresses
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}
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func (api *API) prepareMintCollectiblesData(walletAddresses []string, amount *bigint.BigInt) []common.Address {
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totalAddresses := api.multiplyWalletAddresses(amount, walletAddresses)
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var usersAddresses = []common.Address{}
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for _, k := range totalAddresses {
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usersAddresses = append(usersAddresses, common.HexToAddress(k))
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}
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return usersAddresses
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}
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// Universal minting function for both assets and collectibles.
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// Checks contract type and runs MintCollectibles or MintAssets function.
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func (api *API) MintTokens(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, walletAddresses []string, amount *bigint.BigInt) (string, error) {
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tokenType, err := api.db.GetTokenType(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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switch tokenType {
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case protobuf.CommunityTokenType_ERC721:
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return api.MintCollectibles(ctx, chainID, contractAddress, txArgs, password, walletAddresses, amount)
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case protobuf.CommunityTokenType_ERC20:
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return api.MintAssets(ctx, chainID, contractAddress, txArgs, password, walletAddresses, amount)
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default:
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return "", fmt.Errorf("unknown token type: %v", tokenType)
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}
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}
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func (api *API) EstimateMintTokens(ctx context.Context, chainID uint64, contractAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
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tokenType, err := api.db.GetTokenType(chainID, contractAddress)
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if err != nil {
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return 0, err
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}
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switch tokenType {
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case protobuf.CommunityTokenType_ERC721:
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return api.EstimateMintCollectibles(ctx, chainID, contractAddress, walletAddresses, amount)
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case protobuf.CommunityTokenType_ERC20:
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return api.EstimateMintAssets(ctx, chainID, contractAddress, walletAddresses, amount)
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default:
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return 0, fmt.Errorf("unknown token type: %v", tokenType)
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}
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}
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// Create the amounty of collectible tokens and distribute them to all walletAddresses.
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func (api *API) MintCollectibles(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, walletAddresses []string, amount *bigint.BigInt) (string, error) {
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err := api.validateWalletsAndAmounts(walletAddresses, amount)
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if err != nil {
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return "", err
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}
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contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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usersAddresses := api.prepareMintCollectiblesData(walletAddresses, amount)
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transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
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tx, err := contractInst.MintTo(transactOpts, usersAddresses)
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if err != nil {
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return "", err
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}
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go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
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Hash: tx.Hash(),
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Type: string(transactions.AirdropCommunityToken),
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From: common.Address(txArgs.From),
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ChainID: chainID,
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})
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return tx.Hash().Hex(), nil
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}
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func (api *API) EstimateMintCollectibles(ctx context.Context, chainID uint64, contractAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
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err := api.validateWalletsAndAmounts(walletAddresses, amount)
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if err != nil {
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return 0, err
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}
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usersAddresses := api.prepareMintCollectiblesData(walletAddresses, amount)
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return api.estimateMethod(ctx, chainID, contractAddress, "mintTo", usersAddresses)
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}
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func (api *API) prepareMintAssetsData(walletAddresses []string, amount *bigint.BigInt) ([]common.Address, []*big.Int) {
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var usersAddresses = []common.Address{}
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var amountsList = []*big.Int{}
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for _, k := range walletAddresses {
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usersAddresses = append(usersAddresses, common.HexToAddress(k))
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amountsList = append(amountsList, amount.Int)
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}
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return usersAddresses, amountsList
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}
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// Create the amount of assets tokens and distribute them to all walletAddresses.
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// The amount should be in smallest denomination of the asset (like wei) with decimal = 18, eg.
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// if we want to mint 2.34 of the token, then amount should be 234{16 zeros}.
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func (api *API) MintAssets(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, walletAddresses []string, amount *bigint.BigInt) (string, error) {
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err := api.validateWalletsAndAmounts(walletAddresses, amount)
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if err != nil {
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return "", err
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}
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contractInst, err := api.newAssetsInstance(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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usersAddresses, amountsList := api.prepareMintAssetsData(walletAddresses, amount)
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transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
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tx, err := contractInst.MintTo(transactOpts, usersAddresses, amountsList)
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if err != nil {
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return "", err
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}
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go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
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Hash: tx.Hash(),
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Type: string(transactions.AirdropCommunityToken),
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From: common.Address(txArgs.From),
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ChainID: chainID,
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})
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return tx.Hash().Hex(), nil
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}
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// Estimate MintAssets cost.
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func (api *API) EstimateMintAssets(ctx context.Context, chainID uint64, contractAddress string, walletAddresses []string, amount *bigint.BigInt) (uint64, error) {
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err := api.validateWalletsAndAmounts(walletAddresses, amount)
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if err != nil {
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return 0, err
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}
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usersAddresses, amountsList := api.prepareMintAssetsData(walletAddresses, amount)
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return api.estimateMethod(ctx, chainID, contractAddress, "mintTo", usersAddresses, amountsList)
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}
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// This is only ERC721 function
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func (api *API) RemoteDestructedAmount(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
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callOpts := &bind.CallOpts{Context: ctx, Pending: false}
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contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
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if err != nil {
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return nil, err
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}
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// total supply = airdropped only (w/o burnt)
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totalSupply, err := contractInst.TotalSupply(callOpts)
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if err != nil {
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return nil, err
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}
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// minted = all created tokens (airdropped and remotely destructed)
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mintedCount, err := contractInst.MintedCount(callOpts)
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if err != nil {
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return nil, err
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}
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var res = new(big.Int)
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res.Sub(mintedCount, totalSupply)
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return &bigint.BigInt{Int: res}, nil
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}
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// This is only ERC721 function
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func (api *API) RemoteBurn(ctx context.Context, chainID uint64, contractAddress string, txArgs transactions.SendTxArgs, password string, tokenIds []*bigint.BigInt) (string, error) {
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err := api.validateTokens(tokenIds)
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if err != nil {
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return "", err
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}
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contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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transactOpts := txArgs.ToTransactOpts(utils.GetSigner(chainID, api.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
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var tempTokenIds []*big.Int
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for _, v := range tokenIds {
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tempTokenIds = append(tempTokenIds, v.Int)
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}
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tx, err := contractInst.RemoteBurn(transactOpts, tempTokenIds)
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if err != nil {
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return "", err
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}
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go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
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Hash: tx.Hash(),
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Type: string(transactions.RemoteDestructCollectible),
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From: common.Address(txArgs.From),
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ChainID: chainID,
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})
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return tx.Hash().Hex(), nil
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}
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// This is only ERC721 function
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func (api *API) EstimateRemoteBurn(ctx context.Context, chainID uint64, contractAddress string, tokenIds []*bigint.BigInt) (uint64, error) {
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err := api.validateTokens(tokenIds)
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if err != nil {
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return 0, err
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}
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var tempTokenIds []*big.Int
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for _, v := range tokenIds {
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tempTokenIds = append(tempTokenIds, v.Int)
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}
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return api.estimateMethod(ctx, chainID, contractAddress, "remoteBurn", tempTokenIds)
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}
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func (api *API) ContractOwner(ctx context.Context, chainID uint64, contractAddress string) (string, error) {
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callOpts := &bind.CallOpts{Context: ctx, Pending: false}
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tokenType, err := api.db.GetTokenType(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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if tokenType == protobuf.CommunityTokenType_ERC721 {
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contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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owner, err := contractInst.Owner(callOpts)
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if err != nil {
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return "", err
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}
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return owner.String(), nil
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} else if tokenType == protobuf.CommunityTokenType_ERC20 {
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contractInst, err := api.newAssetsInstance(chainID, contractAddress)
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if err != nil {
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return "", err
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}
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owner, err := contractInst.Owner(callOpts)
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if err != nil {
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return "", err
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}
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return owner.String(), nil
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}
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return "", fmt.Errorf("unknown token type: %v", tokenType)
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}
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func (api *API) RemainingSupply(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
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tokenType, err := api.db.GetTokenType(chainID, contractAddress)
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if err != nil {
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return nil, err
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}
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switch tokenType {
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case protobuf.CommunityTokenType_ERC721:
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return api.remainingCollectiblesSupply(ctx, chainID, contractAddress)
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case protobuf.CommunityTokenType_ERC20:
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return api.remainingAssetsSupply(ctx, chainID, contractAddress)
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default:
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return nil, fmt.Errorf("unknown token type: %v", tokenType)
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}
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}
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// RemainingSupply = MaxSupply - MintedCount
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func (api *API) remainingCollectiblesSupply(ctx context.Context, chainID uint64, contractAddress string) (*bigint.BigInt, error) {
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callOpts := &bind.CallOpts{Context: ctx, Pending: false}
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contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
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if err != nil {
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return nil, err
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}
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maxSupply, err := contractInst.MaxSupply(callOpts)
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if err != nil {
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return nil, err
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}
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mintedCount, err := contractInst.MintedCount(callOpts)
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if err != nil {
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return nil, err
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}
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var res = new(big.Int)
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res.Sub(maxSupply, mintedCount)
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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.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) setMaxSupplyCollectibles(transactOpts *bind.TransactOpts, chainID uint64, contractAddress string, newMaxSupply *big.Int) (*types.Transaction, error) {
|
|
contractInst, err := api.newCollectiblesInstance(chainID, contractAddress)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return contractInst.SetMaxSupply(transactOpts, newMaxSupply)
|
|
}
|
|
|
|
func (api *API) setMaxSupplyAssets(transactOpts *bind.TransactOpts, chainID uint64, contractAddress string, newMaxSupply *big.Int) (*types.Transaction, error) {
|
|
contractInst, err := api.newAssetsInstance(chainID, contractAddress)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return contractInst.SetMaxSupply(transactOpts, newMaxSupply)
|
|
}
|
|
|
|
func (api *API) setMaxSupply(transactOpts *bind.TransactOpts, chainID uint64, contractAddress string, newMaxSupply *big.Int) (*types.Transaction, error) {
|
|
tokenType, err := api.db.GetTokenType(chainID, contractAddress)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
switch tokenType {
|
|
case protobuf.CommunityTokenType_ERC721:
|
|
return api.setMaxSupplyCollectibles(transactOpts, chainID, contractAddress, newMaxSupply)
|
|
case protobuf.CommunityTokenType_ERC20:
|
|
return api.setMaxSupplyAssets(transactOpts, chainID, contractAddress, newMaxSupply)
|
|
default:
|
|
return nil, fmt.Errorf("unknown token type: %v", tokenType)
|
|
}
|
|
}
|
|
|
|
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.accountsManager, api.config.KeyStoreDir, txArgs.From, password))
|
|
|
|
newMaxSupply, err := api.prepareNewMaxSupply(ctx, chainID, contractAddress, burnAmount)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
tx, err := api.setMaxSupply(transactOpts, chainID, contractAddress, newMaxSupply)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
go api.rpcFiltersSrvc.TriggerTransactionSentToUpstreamEvent(&rpcfilters.PendingTxInfo{
|
|
Hash: tx.Hash(),
|
|
Type: string(transactions.BurnCommunityToken),
|
|
From: common.Address(txArgs.From),
|
|
ChainID: chainID,
|
|
})
|
|
|
|
return tx.Hash().Hex(), nil
|
|
}
|
|
|
|
func (api *API) EstimateBurn(ctx context.Context, chainID uint64, contractAddress 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, "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) packCollectibleMethod(ctx context.Context, methodName string, args ...interface{}) ([]byte, error) {
|
|
collectiblesABI, err := abi.JSON(strings.NewReader(collectibles.CollectiblesABI))
|
|
if err != nil {
|
|
return []byte{}, err
|
|
}
|
|
return collectiblesABI.Pack(methodName, args...)
|
|
}
|
|
|
|
func (api *API) packAssetsMethod(ctx context.Context, methodName string, args ...interface{}) ([]byte, error) {
|
|
assetsABI, err := abi.JSON(strings.NewReader(assets.AssetsABI))
|
|
if err != nil {
|
|
return []byte{}, err
|
|
}
|
|
return assetsABI.Pack(methodName, args...)
|
|
}
|
|
|
|
func (api *API) estimateMethod(ctx context.Context, chainID uint64, contractAddress string, methodName string, args ...interface{}) (uint64, error) {
|
|
ethClient, err := api.RPCClient.EthClient(chainID)
|
|
if err != nil {
|
|
log.Error(err.Error())
|
|
return 0, err
|
|
}
|
|
|
|
tokenType, err := api.db.GetTokenType(chainID, contractAddress)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
var data []byte
|
|
|
|
switch tokenType {
|
|
case protobuf.CommunityTokenType_ERC721:
|
|
data, err = api.packCollectibleMethod(ctx, methodName, args...)
|
|
case protobuf.CommunityTokenType_ERC20:
|
|
data, err = api.packAssetsMethod(ctx, methodName, args...)
|
|
default:
|
|
err = fmt.Errorf("unknown token type: %v", tokenType)
|
|
}
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
ownerAddr, err := api.ContractOwner(ctx, chainID, contractAddress)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
toAddr := common.HexToAddress(contractAddress)
|
|
fromAddr := common.HexToAddress(ownerAddr)
|
|
|
|
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
|
|
}
|