/// <summary>
/// MintTokensEth is called when a the ETH contribution listener server triggers an Ether receive event
/// </summary>
/// <returns></returns>
public static bool MintTokensEth(string ethAddress, byte[] neoAddress, ulong ethReceived)
{
object[] transactionData = Helpers.GetEthTransactionAndSaleData(ethReceived, ethAddress, neoAddress);
Transaction tx = (Transaction)transactionData[0];
byte[] sender = (byte[])transactionData[1];
byte[] receiver = (byte[])transactionData[2];
BigInteger whiteListGroupNumber = (BigInteger)transactionData[5];
BigInteger crowdsaleAvailableAmount = (BigInteger)transactionData[6];
BigInteger groupMaximumContribution = (BigInteger)transactionData[7];
BigInteger totalTokensPurchased = (BigInteger)transactionData[8] * NEP5.factor;
BigInteger totalContributionBalance = (BigInteger)transactionData[9];
if (!CanETHUserParticipateInSale(transactionData))
{
refundEth(ethAddress, ethReceived);
Runtime.Notify("MintTokensEth() CanUserParticipate failed", false);
return(false);
}
if (Helpers.GetBlockTimestamp() >= ICOTemplate.PublicSaleEndTime())
{
refundEth(ethAddress, ethReceived);
Runtime.Notify("MintTokensEth() failed. Token Sale is closed.", false);
return(false);
}
byte[] lastTransactionHash = Storage.Get(Storage.CurrentContext, StorageKeys.MintTokensEthLastTX());
if (lastTransactionHash == tx.Hash)
{
// ensure that minTokens doesnt process the same transaction more than once
Runtime.Notify("MintTokensEth() not processing duplicate tx.Hash", tx.Hash);
return(false);
}
BigInteger tokenTotalSupply = NEP5.TotalSupply();
Storage.Put(Storage.CurrentContext, StorageKeys.MintTokensEthLastTX(), tx.Hash);
Runtime.Notify("MintTokensEth() receivedETH", ethReceived);
BigInteger senderAmountSubjectToVesting = TokenSale.SubjectToVestingPeriod(sender);
BigInteger newTokenBalance = NEP5.BalanceOf(sender) + totalTokensPurchased + senderAmountSubjectToVesting;
Helpers.SetBalanceOf(sender, newTokenBalance);
Helpers.SetBalanceOfSaleContribution(sender, totalContributionBalance);
Helpers.SetTotalSupply(totalTokensPurchased);
transfer(null, sender, totalTokensPurchased);
return(true);
}