public static bool AddSubMinter(UInt160 minterAccount, UInt160 subMinterAccount, BigInteger amount)
{
if (IsPaused())
{
Error("System is paused.");
return(false);
}
if (amount <= 0)
{
Error("The parameter amount MUST be greater than 0.");
return(false);
}
if (!IsMinter() || !Runtime.CheckWitness(minterAccount))
{
Error("No authorization.");
return(false);
}
if (IsBlacklisted(minterAccount))
{
Error("Argument account is in blacklist.");
return(false);
}
if (MinterStorage.Exist(subMinterAccount))
{
Error("Minter already exists.");
return(false);
}
var allowance = GetAllowance(minterAccount);
if (allowance < amount)
{
Error("Insufficient allowance.");
return(false);
}
MinterStorage.ReduceAllowance(minterAccount, amount);
MinterStorage.IncreaseAllowance(subMinterAccount, amount);
MinterStorage.Add(subMinterAccount, amount);
MinterChanged(minterAccount, allowance - amount);
MinterChanged(subMinterAccount, amount);
return(true);
}
public static bool IsMinter(UInt160 minterAccount) => MinterStorage.Exist(minterAccount);