/// <summary>
/// 存储求购信息
/// </summary>
/// <param name="fullHash"></param>
/// <param name="map"></param>
/// <returns></returns>
public static bool PutOfferToBuyInfo(byte[] offerid, OfferToBuyInfo map)
{
StorageMap offerToBuyInfoMap = Storage.CurrentContext.CreateMap("offerToBuyInfoMap");
offerToBuyInfoMap.Put(offerid, map.Serialize());
return(true);
}
/// <summary>
/// 撤销上架的求购
/// </summary>
/// <param name="buyer"></param>
/// <param name="fullHash"></param>
/// <param name="assetHash"></param>
/// <returns></returns>
public static bool DiscontinueOfferToBuy(byte[] offerid)
{
//获取求购信息
OfferToBuyInfo offerToBuyInfo = GetOfferToBuyInfo(offerid);
if (offerToBuyInfo.fullHash.Length == 0)//没求购过别浪费时间了
{
throw new InvalidOperationException("error");
}
var buyer = offerToBuyInfo.buyer;
var assetHash = offerToBuyInfo.assetHash;
var fullHash = offerToBuyInfo.fullHash;
//验证权限
if (!Runtime.CheckWitness(buyer) && !checkSpuerAdmin())
{
throw new InvalidOperationException("error");
}
//把钱退给求购者
var price = offerToBuyInfo.price;
StorageMap balanceMap = Storage.CurrentContext.CreateMap("balanceMap");
//var balanceOfContract = balanceMap.Get(ExecutionEngine.ExecutingScriptHash.Concat(assetHash)).AsBigInteger();//合约
var balanceOfBuyer = balanceMap.Get(buyer.Concat(assetHash)).AsBigInteger(); //求购者
//玩家加钱
balanceOfBuyer = balanceOfBuyer + price;
balanceMap.Put(buyer.Concat(assetHash), balanceOfBuyer);
onDexTransfer(new byte[] { }, buyer, assetHash, price);
//归还抵押金
var mortgageAssetHash = getSysSetting("mortgageAssetHash");
var mortgagePayments = offerToBuyInfo.mortgagePayments;
var nncBalanceOfBuyer = balanceMap.Get(buyer.Concat(mortgageAssetHash)).AsBigInteger(); //求购者
nncBalanceOfBuyer = nncBalanceOfBuyer + mortgagePayments;
balanceMap.Put(buyer.Concat(mortgageAssetHash), nncBalanceOfBuyer);
onDexTransfer(new byte[] { }, buyer, mortgageAssetHash, mortgagePayments);
onOfferToBuyDiscontinued(offerToBuyInfo);//通知
return(DeleteOfferToBuyInfo(offerid));
}
/// <summary>
/// 出售
/// </summary>
/// <param name="buyer">求购者</param>
/// <param name="fullHash"></param>
/// <param name="assetHash"></param>
/// <returns></returns>
public static bool Sell(byte[] offerid)
{
//获取求购信息
OfferToBuyInfo offerToBuyInfo = GetOfferToBuyInfo(offerid);
if (offerToBuyInfo.fullHash.Length == 0)//没求购过别浪费时间了
{
throw new InvalidOperationException("error");
}
var fullHash = offerToBuyInfo.fullHash;
var buyer = offerToBuyInfo.buyer;
var assetHash = offerToBuyInfo.assetHash;
//先获取这个域名的信息
OwnerInfo ownerInfo = GetOwnerInfo(fullHash);
if (ownerInfo.owner.Length == 0 || !verifyExpires(ownerInfo.TTL))//验证域名是否有效
{
throw new InvalidOperationException("error");
}
//验证权限
var seller = ownerInfo.owner;
if (!Runtime.CheckWitness(seller))
{
throw new InvalidOperationException("error");
}
//进行域名的转让操作（域名所有权:卖家=>买家）
deleDyncall centerCall = (deleDyncall)getSysSetting("domainCenterHash").ToDelegate();
var result = (byte[])centerCall("owner_SetOwner", new object[3] {
seller, fullHash, buyer
});
if (result.AsBigInteger() != 1) //如果域名所有权转移失败，返回失败
{
throw new InvalidOperationException("error");
}
//把钱转给卖家
assetSetting assetSetting = getAssetSetting(assetHash);
BigInteger handlingFee = offerToBuyInfo.price * assetSetting.handlingFeeRate / fixedNumber; //handlingFeeRate是事先乘10000存储的
StorageMap balanceMap = Storage.CurrentContext.CreateMap("balanceMap");
var balanceOfSeller = balanceMap.Get(seller.Concat(assetHash)).AsBigInteger(); //卖家
balanceOfSeller = balanceOfSeller + offerToBuyInfo.price - handlingFee;
//给卖方增加钱(扣除手续费)
balanceMap.Put(seller.Concat(assetHash), balanceOfSeller);
onDexTransfer(new byte[] { }, seller, assetHash, offerToBuyInfo.price - handlingFee);
//转移手续费
//发送手续费到分红池
if (handlingFee > 0)
{
if (!NEP5transfer(ExecutionEngine.ExecutingScriptHash, getSysSetting("dividingPoolAddr"), assetHash, handlingFee))
{
throw new Exception("NEP5transfer is wrong");
}
}
//把押金还给买家
var mortgageAssetHash = getSysSetting("mortgageAssetHash");
var nncBalanceOfOffer = balanceMap.Get(buyer.Concat(mortgageAssetHash)).AsBigInteger();
nncBalanceOfOffer += offerToBuyInfo.mortgagePayments;
balanceMap.Put(buyer.Concat(mortgageAssetHash), nncBalanceOfOffer);
onDexTransfer(new byte[] { }, buyer, mortgageAssetHash, offerToBuyInfo.mortgagePayments);
//删除此条求购信息
DeleteOfferToBuyInfo(offerid);
//通知
onSell(seller, offerToBuyInfo);
return(true);
}
/// <summary>
/// 求购
/// </summary>
/// <param name="fullhash"></param>
/// <param name="price"></param>
/// <returns></returns>
public static bool OfferToBuy(byte[] buyer, string[] domainArray, byte[] assetHash, BigInteger price, BigInteger MortgagePayments)
{
if (!Runtime.CheckWitness(buyer))
{
throw new InvalidOperationException("error");
}
if (price <= 0)
{
throw new InvalidOperationException("error");
}
//不允许的资产不能定价
assetSetting assetSetting = getAssetSetting(assetHash);
if (assetSetting.enable != 1)
{
throw new InvalidOperationException("error");
}
//价格必须大于0
if (price <= 0)
{
throw new InvalidOperationException("error");
}
//支付的抵押金数额必须大于
BigInteger minMortgagePayments = getSysSetting("minMortgagePayments").AsBigInteger();
if (MortgagePayments < minMortgagePayments)
{
throw new InvalidOperationException("error");
}
//合约限制最小价格为0.1,并且小数点后面不能超过一位（按照精度2换算），NNC为10
if (price < assetSetting.valueMin || price % assetSetting.valueUnit > 0)
{
throw new InvalidOperationException("error");
}
//获取域名的fullhash
byte[] fullHash = NameHashArray(domainArray);
//获取这个交易的txid
byte[] offerid = (ExecutionEngine.ScriptContainer as Transaction).Hash;
//获取求购信息
OfferToBuyInfo offerToBuyInfo = GetOfferToBuyInfo(offerid);
if (offerToBuyInfo.fullHash.Length != 0)//已经有了这个资产的求购信息 同资产只能有一个求购
{
throw new InvalidOperationException("error");
}
//先获取这个域名的信息
OwnerInfo ownerInfo = GetOwnerInfo(fullHash);
//域名没有初始化或者已经到期了不能求购 ？？？？？？？先写着 再想想有没有必要限制
if (ownerInfo.owner.Length == 0 || !verifyExpires(ownerInfo.TTL))
{
throw new InvalidOperationException("error");
}
//不能求购属于自己的合约
if (buyer == ownerInfo.owner)
{
throw new InvalidOperationException("error");
}
//看看有没有这么多钱
StorageMap balanceMap = Storage.CurrentContext.CreateMap("balanceMap");
var balanceOfBuyer = balanceMap.Get(buyer.Concat(assetHash)).AsBigInteger();
balanceOfBuyer = balanceOfBuyer - price;
//扣钱
if (balanceOfBuyer > 0)
{
balanceMap.Put(buyer.Concat(assetHash), balanceOfBuyer);
}
else if (balanceOfBuyer == 0)
{
balanceMap.Delete(buyer.Concat(assetHash));
}
else
{
throw new InvalidOperationException("error");
}
onDexTransfer(buyer, new byte[] { }, assetHash, price);
//扣除抵押金
var mortgageAssetHash = getSysSetting("mortgageAssetHash");
var nncBalanceOfBuyer = balanceMap.Get(buyer.Concat(mortgageAssetHash)).AsBigInteger();
//var nncBalanceOfContract = balanceMap.Get(ExecutionEngine.ExecutingScriptHash.Concat(nncHash)).AsBigInteger();
nncBalanceOfBuyer = nncBalanceOfBuyer - MortgagePayments;
if (nncBalanceOfBuyer > 0)
{
balanceMap.Put(buyer.Concat(mortgageAssetHash), nncBalanceOfBuyer);
}
else if (nncBalanceOfBuyer == 0)
{
balanceMap.Delete(buyer.Concat(mortgageAssetHash));
}
else
{
throw new InvalidOperationException("error");
}
onDexTransfer(buyer, new byte[] { }, mortgageAssetHash, MortgagePayments);
//更新这个域名的求购信息
offerToBuyInfo = new OfferToBuyInfo {
offerid = offerid, fullHash = fullHash, buyer = buyer, assetHash = assetHash, price = price, fullDomain = getFullStrForArray(domainArray), mortgagePayments = MortgagePayments
};
PutOfferToBuyInfo(offerid, offerToBuyInfo);
onOfferToBuy(offerToBuyInfo);
return(true);
}