public static ICOStage GetCurrentStage()
{
var query = string.Format("SELECT * FROM ICOStages WHERE StartDate < '{0}' AND EndDate > '{0}' AND StatusInt = {1}",
AppSettings.ServerTime.ToDBString(), (int)StageStatus.Active);
var stages = TableHelper.GetListFromRawQuery <ICOStage>(query);
ICOStage stage = null;
if (stages.Count > 0)
{
stage = stages[0];
}
if (stages.Count == 0 && AppSettings.ICO.ICOStartNewStageIfPreviousEndedEarlierEnabled)
{
var nextStage = GetNextStage();
if (nextStage != null)
{
stage = nextStage;
}
}
//Lets see if it should be finished
if (stage != null && stage.GetAvailableTokens() == 0)
{
stage.Status = StageStatus.Finished;
stage.Save();
return(null);
}
return(stage);
}
public static void TryPurchaseTokens(Member user, ICOStage stage, int numberOfTokens, BalanceType targetBalance)
{
var TokenCryprocurrency = CryptocurrencyFactory.Get(CryptocurrencyType.ERC20Token);
if (numberOfTokens <= 0)
{
throw new MsgException(U5006.AMOUNTEQUALZERO);
}
if (numberOfTokens > stage.GetAvailableTokens())
{
throw new MsgException(U6012.NOTOKENSLEFT);
}
int userPurchasesInLast15min = ICOPurchase.GetUserPurchasesInLast15Min(stage.Id, user.Id);
if (userPurchasesInLast15min + numberOfTokens > AppSettings.ICO.ICOPurchaseLimitPerUserPer15mins)
{
throw new MsgException(String.Format(U6012.COINSEXCEED15MIN, "<b>" + userPurchasesInLast15min + "</b>", TokenCryprocurrency.Code));
}
//All OK, let's charge the balance
//If freeze system is enabled, purchased tokens are freezed
CryptocurrencyType TypeOfPurchasedCoins = AppSettings.Ethereum.ERC20TokensFreezeSystemEnabled ? CryptocurrencyType.ERCFreezed : CryptocurrencyType.ERC20Token;
Money totalAmount = numberOfTokens * stage.TokenPrice;
if (targetBalance == BalanceType.PurchaseBalance)
{
if (totalAmount > user.PurchaseBalance)
{
throw new MsgException(L1.NOTENOUGHFUNDS);
}
user.SubtractFromPurchaseBalance(totalAmount, TokenCryprocurrency.Code + " purchase", BalanceLogType.CoinPurchase);
user.SaveBalances();
}
else if (targetBalance == BalanceType.BTC)
{
decimal amountInBTC = (totalAmount.ToDecimal() /
CryptocurrencyFactory.Get(CryptocurrencyType.BTC).GetValue().ToDecimal()).TruncateDecimals(8);
if (amountInBTC > user.GetCryptocurrencyBalance(CryptocurrencyType.BTC).ToDecimal())
{
throw new MsgException(L1.NOTENOUGHFUNDS);
}
user.SubtractFromCryptocurrencyBalance(CryptocurrencyType.BTC, amountInBTC,
TokenCryprocurrency.Code + " purchase", BalanceLogType.CoinPurchase);
}
else
{
throw new ArgumentException("Invalid argument: " + targetBalance.ToString(), "targetBalance");
}
//Add history entry
History.AddPurchase(user.Name, totalAmount, TokenCryprocurrency.Code);
//Credit coins to Referrer
decimal tokensCreditedToReferrer = 0;
if (user.HasReferer)
{
var Referer = new Member(user.ReferrerId);
tokensCreditedToReferrer = (Referer.Membership.ICOPurchasePercent / 100) * numberOfTokens;
if (tokensCreditedToReferrer > 0)
{
Referer.AddToCryptocurrencyBalance(TypeOfPurchasedCoins, tokensCreditedToReferrer, TokenCryprocurrency.Code + " purchase /ref/"
+ user.Name, BalanceLogType.CoinPurchase);
if (TypeOfPurchasedCoins == CryptocurrencyType.ERCFreezed)
{
UserFreezedToken.Add(Referer.Id, tokensCreditedToReferrer);
}
user.IncreaseERC20TokensEarningsForDRef(tokensCreditedToReferrer);
user.SaveStatistics();
}
}
//Add purchase entry
ICOPurchase.Add(user.Id, numberOfTokens, tokensCreditedToReferrer + (decimal)numberOfTokens, stage.Id);
//Add coins to balance
user.AddToCryptocurrencyBalance(TypeOfPurchasedCoins, numberOfTokens, TokenCryprocurrency.Code + " purchase", BalanceLogType.CoinPurchase);
if (TypeOfPurchasedCoins == CryptocurrencyType.ERCFreezed)
{
UserFreezedToken.Add(user.Id, Decimal.Parse(numberOfTokens.ToString()));
}
}