private static Deed getDeed(string label, byte[] who)
{
byte[] key = bidkey(label, who);
byte[] data = Storage.Get(Storage.CurrentContext, key);
Deed deed = new Deed(null, 0);
if (data.Length == 0)
{
return(deed);
}
int seek = 0;
int len = 0;
// deed.owner
len = (int)data.Range(seek, 2).AsBigInteger();
seek += 2;
deed.owner = data.Range(seek, len);
seek += len;
// deed.createOn
len = (int)data.Range(seek, 2).AsBigInteger();
seek += 2;
deed.createOn = data.Range(seek, len).AsBigInteger();
seek += len;
// deed.value
len = (int)data.Range(seek, 2).AsBigInteger();
seek += 2;
deed.value = data.Range(seek, len).AsBigInteger();
seek += len;
return(deed);
}
public static Boolean newBid(string label, byte[] who, BigInteger value)
{
if (isAvailable(label) == false)
{
return(false);
}
var checkBid = getDeed(label, who);
if (checkBid.value != 0)
{
// already bid
return(false);
}
Deed newDeed = new Deed(who, value);
saveDeed(label, who, newDeed);
Runtime.Notify(new Object[] { "create new bid", label });
return(true);
}
private static void saveDeed(string label, byte[] who, Deed deed)
{
byte[] key = bidkey(label, who);
byte[] doublezero = new byte[] { 0, 0 };
// deed.owner
var data = deed.owner;
var datalen = ((BigInteger)data.Length).AsByteArray().Concat(doublezero).Range(0, 2);
var value = datalen.Concat(data);
// deed.createOn
data = deed.createOn.AsByteArray();
datalen = ((BigInteger)data.Length).AsByteArray().Concat(doublezero).Range(0, 2);
value = datalen.Concat(data);
// deed.value
data = deed.value.AsByteArray();
datalen = ((BigInteger)data.Length).AsByteArray().Concat(doublezero).Range(0, 2);
value = datalen.Concat(data);
Runtime.Notify(new Object[] { "save deed", label });
Storage.Put(Storage.CurrentContext, key, value);
}