protected BoardViewModel(int cid, IRankingStrategy rule, ProblemCollection problems, IContestTime time)
{
ContestId = cid;
RankingStrategy = (rule as IRankingStrategyV2) ?? NullRank.Instance;
Problems = problems;
ContestTime = time;
}
/// <summary>
/// Initialize an time only model from existing time.
/// </summary>
public TimeOnlyModel(IContestTime time)
{
StartTime = time.StartTime;
EndTime = time.EndTime;
FreezeTime = time.FreezeTime;
UnfreezeTime = time.UnfreezeTime;
}
public ScoreboardModel(
int cid,
IReadOnlyDictionary <int, IScoreboardRow> data,
IReadOnlyDictionary <int, Category> categories,
IReadOnlyDictionary <int, Affiliation> affiliations,
ProblemCollection problems,
IContestTime time,
IRankingStrategy rankingStrategy)
: this(
cid,
rankingStrategy,
time,
data,
categories,
affiliations,
problems,
new SortOrderLookup(categories, data, true, rankingStrategy),
new SortOrderLookup(categories, data, false, rankingStrategy))
{
}
public ScoreboardModel(
int cid,
IRankingStrategy rule,
IContestTime time,
IReadOnlyDictionary <int, IScoreboardRow> data,
IReadOnlyDictionary <int, Category> categories,
IReadOnlyDictionary <int, Affiliation> affiliations,
ProblemCollection problems,
SortOrderLookup @public,
SortOrderLookup restricted)
{
ContestId = cid;
RankingStrategy = rule;
Data = data;
RefreshTime = DateTimeOffset.Now;
Categories = categories;
Affiliations = affiliations;
Public = @public;
Restricted = restricted;
Problems = problems;
ContestTime = time;
}
public Statistics(ProblemStatisticsModel[] model, IRankingStrategyV2 rule, ProblemCollection problems, IContestTime time) => (_model, _rule, _problems, _time) = (model, rule, problems, time);
/// <summary>
/// Gets the state of contest.
/// </summary>
/// <param name="time">The contest time.</param>
/// <param name="nowTime">The current datetime.</param>
/// <returns>The state of contest.</returns>
public static ContestState GetState(IContestTime time, DateTimeOffset?nowTime = null)
{
// The implementation cannot depend on IContestTime.GetState().
var now = nowTime ?? DateTimeOffset.Now;
DateTimeOffset?start = time.StartTime;
if (!start.HasValue)
{
return(ContestState.NotScheduled);
}
if (start.Value > now)
{
// not started yet
return(ContestState.ScheduledToStart);
}
TimeSpan?end = time.EndTime, freeze = time.FreezeTime, unfreeze = time.UnfreezeTime;
if (!end.HasValue)
{
// This is a special state. Usually this field
// should not be null. But in some cases (like
// problemset types), this may be null.
return(ContestState.Started);
}
var timeSpan = now - start.Value;
if (freeze.HasValue)
{
// unfreezed
if (unfreeze.HasValue && unfreeze.Value <= timeSpan)
{
return(ContestState.Finalized);
}
// ended, but not freezed
if (end.Value <= timeSpan)
{
return(ContestState.Ended);
}
// freezed, but not ended
if (freeze.Value <= timeSpan)
{
return(ContestState.Frozen);
}
// This contest may freeze later
return(ContestState.Started);
}
else if (end.Value <= timeSpan)
{
return(ContestState.Finalized);
}
else
{
return(ContestState.Started);
}
}