public static bool IssueBond(string bondName, uint parValue, uint purchaseEndTime, uint interval, uint round, uint couponRate, ulong totalCap, byte[] Account)
{
if (!Runtime.CheckWitness(admin))
{
return(false);
}
if (purchaseEndTime <= Runtime.Time)
{
return(false);
}
if (totalCap < minIssueCap || round < minRound || couponRate <= 0 || interval < minInterval)
{
return(false);
}
if (!validateAddress(Account))
{
return(false);
}
BondItem bond = new BondItem();
bond.ParValue = parValue;
bond.purchaseEndTime = purchaseEndTime;
bond.CouponRate = couponRate;
bond.Interval = interval;
bond.TotalCap = totalCap;
bond.remainCap = totalCap;
bond.Round = round;
bond.Maturity = purchaseEndTime + round * interval;
byte[] b = Helper.Serialize(bond);
Storage.Put(Storage.CurrentContext, bondPrefix.Concat(bondName.AsByteArray()), b);
return(true);
}
public static bool PayInterstOrPrincipal(string bondName, byte[] account)
{
if (!validateBond(bondName))
{
return(false);
}
byte[] investorKey = bondInvestorPrefix.Concat(bondName.AsByteArray()).Concat(account);
BigInteger balance = Storage.Get(Storage.CurrentContext, investorKey).AsBigInteger();
if (balance < minInvestCap)
{
return(false);
}
BondItem bond = (BondItem)Helper.Deserialize(GetBond(bondName));
byte[] paidKey = bondPaidPrefix.Concat(bondName.AsByteArray()).Concat(account);
BigInteger paidRound = Storage.Get(Storage.CurrentContext, paidKey).AsBigInteger();
BigInteger currentRound = (Runtime.Time - bond.purchaseEndTime) / bond.Interval;
if (paidRound > bond.Round)
{
return(false);
}
if (currentRound > bond.Round)
{
currentRound = bond.Round;
}
BigInteger investValue = Storage.Get(Storage.CurrentContext, investorKey).AsBigInteger();
BigInteger interst = (currentRound - paidRound) * (investValue * bond.CouponRate / 100);
byte[] ret;
if (currentRound == bond.Round)
{
ret = Native.Invoke(0, ontAddr, "transfer", new object[1] {
new Transfer {
From = bond.Account, To = account, Value = (ulong)(interst + investValue)
}
});
}
else
{
ret = Native.Invoke(0, ontAddr, "transfer", new object[1] {
new Transfer {
From = bond.Account, To = account, Value = (ulong)interst
}
});
}
if (ret[0] != 1)
{
return(false);
}
Storage.Put(Storage.CurrentContext, paidKey, paidRound + 1);
return(true);
}
public static bool InvestBond(string bondName, byte[] account, uint bondNumber)
{
if (!Runtime.CheckWitness(account))
{
return(false);
}
if (bondNumber <= 0 || !validateAddress(account) || !validateBond(bondName))
{
return(false);
}
BondItem bond = (BondItem)Helper.Deserialize(GetBond(bondName));
if (Runtime.Time > bond.purchaseEndTime)
{
Runtime.Notify("bond subscription has been ended.");
return(false);
}
uint investValue = bondNumber * bond.ParValue;
if (bond.remainCap < investValue)
{
Runtime.Notify("bond remain invest capacity not enough.");
return(false);
}
byte[] ret = Native.Invoke(0, ontAddr, "transfer", new object[1] {
new Transfer {
From = account, To = bond.Account, Value = investValue
}
});
if (ret[0] != 1)
{
return(false);
}
bond.remainCap = bond.TotalCap - investValue;
byte[] investorKey = bondInvestorPrefix.Concat(bondName.AsByteArray()).Concat(account);
BigInteger balance = Storage.Get(Storage.CurrentContext, investorKey).AsBigInteger();
Storage.Put(Storage.CurrentContext, investorKey, balance + investValue);
return(true);
}
public List <BondItem> getListBonds()
{
bus_Bond bus = new bus_Bond();
List <BondItem> bondsList = new List <BondItem>();
List <V_BOND_STATIC> bondsAll = bus.GetListAllBondStatic(16);
foreach (V_BOND_STATIC item in bondsAll)
{
BondItem bond = new BondItem();
bond.Bond = item.BOND_CODE;
bond.Termmin = "1";
bond.Termmax = "10";
bond.Couponmin = "5.5";
bond.Couponmax = "10.5";
bond.Amount = "5000000000";
bond.Category = "O";
bondsList.Add(bond);
}
return(bondsList);
}