private Dictionary <ulong, ulong> FillPreviousTradesPairs(ApplicationData thisMonth, ApplicationData prevMonth)
{
Dictionary <ulong, ulong> prevMonthList = new Dictionary <ulong, ulong>();
foreach (UserData user in prevMonth.GetStorage())
{
UserData nextUser;
if (thisMonth.Get(user.UserId) != null && prevMonth.Next(user.UserId, out nextUser))
{
prevMonthList.Add(user.UserId, nextUser.UserId);
}
}
return(prevMonthList);
}
private bool Initialize(ApplicationData currentTrade, ApplicationHistory tradeHistory)
{
_data.Clear();
_computedChain.Clear();
Dictionary <ulong, ulong> prevMonthList = null;
if (tradeHistory.Count() > 0)
{
prevMonthList = FillPreviousTradesPairs(currentTrade, tradeHistory.GetTrade(0));
}
Dictionary <ulong, ulong> prevPrevMonthList = null;
if (tradeHistory.Count() > 1)
{
prevPrevMonthList = FillPreviousTradesPairs(currentTrade, tradeHistory.GetTrade(1));
}
Dictionary <UserData, List <ulong> > tmpData = new Dictionary <UserData, List <ulong> >();
foreach (UserData user1 in currentTrade.GetStorage())
{
List <ulong> candidate = new List <ulong>();
ulong prevPartner = 0;
if (prevMonthList != null)
{
prevMonthList.TryGetValue(user1.UserId, out prevPartner);
}
ulong prevPrevPartner = 0;
if (prevPrevMonthList != null)
{
prevPrevMonthList.TryGetValue(user1.UserId, out prevPrevPartner);
}
bool bPushBack = false;
foreach (UserData user2 in currentTrade.GetStorage())
{
if (user2.UserId == user1.UserId || user2.UserId == prevPartner || user2.UserId == user1.PreferenceId)
{
continue;
}
if (user2.UserId == prevPrevPartner)
{
bPushBack = true;
}
else
{
candidate.Add(user2.UserId);
}
}
candidate = candidate.OrderBy(x => Guid.NewGuid()).ToList();
if (bPushBack)
{
candidate.Add(prevPrevPartner);
}
if (user1.PreferenceId != 0)
{
candidate = candidate.Prepend(user1.PreferenceId).ToList();
}
if (candidate.Count == 0)
{
return(false);
}
tmpData.Add(user1, candidate);
}
if (tmpData.Count == 0)
{
return(false);
}
// order by number of candidates first, if someone had someone else as a partner las trade, it is removed from candidates this trade
foreach (var byCount in tmpData.GroupBy(x => x.Value.Count))
{
foreach (var byPreference in byCount.GroupBy(x => x.Key.PreferenceId != 0))
{
foreach (var dat in byPreference.OrderBy(x => Guid.NewGuid()))
{
_data.Add(dat.Key.UserId, dat.Value);
}
}
}
//_data = _data.OrderBy(x => x.Value.Count).ToDictionary(x => x.Key, x => x.Value);
return(true);
}