public async Task <TokenInfo> GetTokenInfoAsync(string tokenContractAddress)
{
ERC20 erc20 = new ERC20(this.HttpRPCEndpoint, this.account);
try
{
return(await erc20.GetTokenInfoAsync(tokenContractAddress));
}
catch (Exception ex)
{
throw ex;
}
}
public async Task <TokenInfo> DeployERC20Contract(string tokenName, string tokenSymbol, BigInteger initialAmount, Byte decimalUnit)
{
ERC20 erc20 = new ERC20(this.HttpRPCEndpoint, this.account);
string contractAddress = await erc20.DeployToken(tokenName, tokenSymbol, initialAmount, decimalUnit);
return(new TokenInfo()
{
Name = tokenName,
Symbol = tokenSymbol,
TotalSupplied = initialAmount,
ContractAddress = contractAddress
});
}
//User1 approve Application's transaction.
//User1 have to login to ledger and approve Application's tranfer
public async Task <bool> ApproveAsync(string tokenContractAddress, string spenderAddress, BigInteger amount)
{
ERC20 erc20 = new ERC20(this.HttpRPCEndpoint, this.account);
try
{
var txReceipt = await erc20.ApproveAsync(tokenContractAddress, spenderAddress, amount);
//adding log to Offchain
return(true);
}
catch (Exception ex)
{
throw ex;
}
}
public async Task <bool> TransferFromAsync(string tokenContractAddress, string senderAddress, string recepientAddress, BigInteger amount)
{
ERC20 erc20 = new ERC20(this.HttpRPCEndpoint, this.account);
try
{
var txReceipt = await erc20.TransferFromAsync(tokenContractAddress, senderAddress, recepientAddress, amount);
//adding log to Offchain
var transactionContext = new OffChain.ContractTransaction(this.account,
new OffChain.TokenTransfer()
{
Description = "TransferFrom",
FromAccount = senderAddress,
ToAccount = recepientAddress,
TokenAmount = amount.ToString(),
TokenAddress = tokenContractAddress
},
new OffChain.TransactionReceipt()
{
BlockHash = txReceipt.BlockHash,
BlockNumber = txReceipt.BlockNumber.HexValue,
ContractAddress = txReceipt.ContractAddress,
CumulativeGasUsed = txReceipt.CumulativeGasUsed.HexValue,
GasUsed = txReceipt.GasUsed.HexValue,
Logs = txReceipt.Logs.ToString(),
Status = txReceipt.Status.HexValue,
TransactionHash = txReceipt.TransactionHash,
TransactionIndex = txReceipt.TransactionIndex.HexValue
});
var _transactionContext = new TR20.Loyalty.TxIndexer.Proxy.ContractTransaction()
{
Id = transactionContext.Id,
Name = transactionContext.Name,
TransactionID = transactionContext.TransactionID,
TransactionTime = transactionContext.TransactionTime,
TransactionOwner = transactionContext.TransactionOwner,
TransactionConfirmation = new TR20.Loyalty.TxIndexer.Proxy.TransactionReceipt()
{
BlockHash = transactionContext.TransactionConfirmation.BlockHash,
BlockNumber = transactionContext.TransactionConfirmation.BlockNumber,
ContractAddress = transactionContext.TransactionConfirmation.ContractAddress,
CumulativeGasUsed = transactionContext.TransactionConfirmation.CumulativeGasUsed,
GasUsed = transactionContext.TransactionConfirmation.GasUsed,
Logs = transactionContext.TransactionConfirmation.Logs,
TransactionHash = transactionContext.TransactionConfirmation.TransactionHash,
TransactionIndex = transactionContext.TransactionConfirmation.TransactionIndex
},
BusinessContractDTO = new TokenTransfer()
{
Description = transactionContext.BusinessContractDTO.Description,
FromAccount = transactionContext.BusinessContractDTO.FromAccount,
ToAccount = transactionContext.BusinessContractDTO.ToAccount,
TokenAmount = transactionContext.BusinessContractDTO.TokenAmount,
TokenAddress = transactionContext.BusinessContractDTO.TokenAddress
}
};
#if !DEBUG
await indexerProxy.LogTransactionAsync(_transactionContext, transactionContext.BusinessContractDTO.Description);
#endif
return(true);
}
catch (Exception ex)
{
throw ex;
}
}
public async Task <BigInteger> GetBalanceAsync(string tokenContractAddress, string address)
{
ERC20 erc20 = new ERC20(this.HttpRPCEndpoint, this.account);
return(await erc20.GetBalanceAsync(tokenContractAddress, address));
}