/// <summary>
/// allow allocation of presale purchases by contract administrator. this allows the moonlight team to allocate the 25% of LX tokens sold in the private presale.
/// as we accepted ETH in addition to NEO&GAS, using a mintTokens method here is not practical.
/// 1. this method will not allow the presale allocation to exceed the defined amount
/// 2. this method is permanently disabled once the method `LockPresaleAllocation` has been called.
/// 3. the state of the `LockPresaleAllocation` can be determined by the public using the method `IsPresaleAllocationLocked` (returns timestamp that lock was put in place)
/// </summary>
/// <param name="address"></param>
/// <param name="amountPurchased"></param>
/// <returns></returns>
public static bool AllocatePresalePurchase(byte[] address, BigInteger amountPurchased)
{
bool presaleLocked = Storage.Get(Storage.CurrentContext, StorageKeys.PresaleAllocationLocked()).AsBigInteger() > 0;
if (presaleLocked)
{
Runtime.Notify("AllocatePresalePurchase() presaleLocked, can't allocate");
return(false);
}
BigInteger presaleAllocationMaxValue = ((ICOContract.TokenMaxSupply * (BigInteger)ICOContract.PresaleAllocationPercentage()) / 100) * NEP5.factor;
BigInteger presaleAllocatedValue = Storage.Get(Storage.CurrentContext, StorageKeys.PresaleAllocatedValue()).AsBigInteger();
if ((presaleAllocatedValue + amountPurchased) > presaleAllocationMaxValue)
{
// this purchase will exceed the presale cap.. dont allow
Runtime.Notify("AllocatePresalePurchase() purchase will exceed presale max allocation");
return(false);
}
TokenSale.SetVestingPeriodForAddress(address, amountPurchased);
Storage.Put(Storage.CurrentContext, StorageKeys.PresaleAllocatedValue(), presaleAllocatedValue + amountPurchased);
Runtime.Notify("AllocatePresalePurchase() tokens allocated", address, amountPurchased);
return(true);
}
public static object HandleHelperOperation(string operation, params object[] args)
{
switch (operation)
{
case "BalanceOfVestedAddress":
if (!Helpers.RequireArgumentLength(args, 1))
{
return(false);
}
return(Helpers.BalanceOfVestedAddress((byte[])args[0]));
case "IsPresaleAllocationLocked":
return(Storage.Get(Storage.CurrentContext, StorageKeys.PresaleAllocationLocked()));
case "supportedStandards":
return(DIVE.DIVE.supportedStandards());
}
return(false);
}
public static object HandleHelperOperation(string operation, params object[] args)
{
switch (operation)
{
case "BalanceOfVestedAddress":
// retrieve the real balance of an address that has been subjected to whitepaper defined vesting period
if (!Helpers.RequireArgumentLength(args, 1))
{
return(false);
}
return(Helpers.BalanceOfVestedAddress((byte[])args[0]));
case "IsPresaleAllocationLocked":
// if the admin method `Administration.AllocatePresalePurchase` is permanently disabled, this method will return
// the timestamp the lock was put in place.
return(Storage.Get(Storage.CurrentContext, StorageKeys.PresaleAllocationLocked()));
case "supportedStandards":
// support NEP-10 by responding to supportedStandards
// https://github.com/neo-project/proposals/blob/master/nep-10.mediawiki
return(ICOTemplate.SupportedStandards());
}
return(false);
}
/// <summary>
/// once initial presale allocation completed perform lock that prevents allocation being used
/// </summary>
/// <returns></returns>
public static bool LockPresaleAllocation()
{
Runtime.Log("LockPresaleAllocation() further presale allocations locked");
Storage.Put(Storage.CurrentContext, StorageKeys.PresaleAllocationLocked(), Helpers.GetBlockTimestamp());
return(true);
}