public override DepositInfo GetNeededDeposit(ToBeConnectedTokenInfo input)
{
Assert(IsValidSymbol(input.TokenSymbol), "Invalid symbol.");
var toConnector = State.Connectors[input.TokenSymbol];
Assert(toConnector != null, "[GetNeededDeposit]Can't find to connector.");
Assert(!string.IsNullOrEmpty(toConnector.RelatedSymbol), "can't find related symbol'");
var fromConnector = State.Connectors[toConnector.RelatedSymbol];
Assert(fromConnector != null, "[GetNeededDeposit]Can't find from connector.");
var tokenInfo = State.TokenContract.GetTokenInfo.Call(
new GetTokenInfoInput
{
Symbol = input.TokenSymbol,
});
var balance = State.TokenContract.GetBalance.Call(
new GetBalanceInput
{
Owner = Context.Self,
Symbol = input.TokenSymbol
}).Balance;
var amountOutOfTokenConvert = tokenInfo.TotalSupply - balance - input.AmountToTokenConvert;
long needDeposit = 0;
if (amountOutOfTokenConvert > 0)
{
var fb = fromConnector.VirtualBalance;
var tb = toConnector.IsVirtualBalanceEnabled
? toConnector.VirtualBalance.Add(tokenInfo.TotalSupply)
: tokenInfo.TotalSupply;
needDeposit =
BancorHelper.GetAmountToPayFromReturn(fb, GetWeight(fromConnector),
tb, GetWeight(toConnector), amountOutOfTokenConvert);
}
return(new DepositInfo
{
NeedAmount = needDeposit,
AmountOutOfTokenConvert = amountOutOfTokenConvert
});
}
public override Empty EnableConnector(ToBeConnectedTokenInfo input)
{
Assert(IsValidSymbol(input.TokenSymbol), "Invalid symbol.");
var fromConnector = State.Connectors[input.TokenSymbol];
Assert(fromConnector != null, "[EnableConnector]Can't find from connector.");
Assert(!string.IsNullOrEmpty(fromConnector.RelatedSymbol), "can't find related symbol'");
var toConnector = State.Connectors[fromConnector.RelatedSymbol];
Assert(toConnector != null, "[EnableConnector]Can't find to connector.");
var needDeposit = GetNeededDeposit(input);
if (needDeposit.NeedAmount > 0)
{
State.TokenContract.TransferFrom.Send(
new TransferFromInput
{
Symbol = State.BaseTokenSymbol.Value,
From = Context.Sender,
To = Context.Self,
Amount = needDeposit.NeedAmount,
});
}
if (input.AmountToTokenConvert > 0)
{
State.TokenContract.TransferFrom.Send(
new TransferFromInput
{
Symbol = input.TokenSymbol,
From = Context.Sender,
To = Context.Self,
Amount = input.AmountToTokenConvert
});
}
State.DepositBalance[toConnector.Symbol] = needDeposit.NeedAmount;
toConnector.IsPurchaseEnabled = true;
fromConnector.IsPurchaseEnabled = true;
return(new Empty());
}
private async Task InitialBuildConnector(string symbol)
{
var token = (await TokenContractStub.GetTokenInfo.CallAsync(new GetTokenInfoInput
{
Symbol = symbol,
}));
var tokenInfo = new ToBeConnectedTokenInfo
{
TokenSymbol = symbol,
AmountToTokenConvert = 0
};
var issueRet = (await TransactionFeeChargingContractStub.IssueToTokenConvert.SendAsync(
new IssueAmount
{
Symbol = symbol,
Amount = token.TotalSupply - token.Supply
})).TransactionResult;
issueRet.Status.ShouldBe(TransactionResultStatus.Mined);
var buildConnector = (await TokenConverterContractStub.EnableConnector.SendAsync(tokenInfo)).TransactionResult;
buildConnector.Status.ShouldBe(TransactionResultStatus.Mined);
}
