/// <summary>
/// Plays a single <see cref="MatchDay"/> for every group.
/// </summary>
/// <exception cref="InvalidOperationException">The group stage is complete.</exception>
public void Play()
{
if (_qualifiedTeams.Count == _qualifiedCount)
{
throw new InvalidOperationException("The group stage is complete.");
}
bool stillPlaying = false;
foreach (var group in Groups)
{
if (group.NextMatchDay != null)
{
group.Play();
stillPlaying = true;
}
}
if (!stillPlaying)
{
var divideQualifiedByGroup = _qualifiedCount / Groups.Count;
for (int i = 0; i < divideQualifiedByGroup; i++)
{
_qualifiedTeams.AddRange(GetTeamsAtSpecifiedRanking(i + 1).Select(r => r.Team));
}
var restQualified = _qualifiedCount % Groups.Count;
if (restQualified > 0)
{
var restTeams = GetTeamsAtSpecifiedRanking(divideQualifiedByGroup + 1);
var restTeamsSorted = GroupRanking.Sort(restTeams).Select(r => r.Team);
_qualifiedTeams.AddRange(restTeamsSorted.Take(restQualified));
}
}
}
/// <summary>
/// Generates the ranking of the group.
/// </summary>
/// <returns>A dictionnary where the key is the rank.</returns>
public IReadOnlyDictionary <int, GroupRanking> GetRanking()
{
var rankings = Teams.Select(t => new GroupRanking(t, GetTeamMatches(t, played: true, excludeExempt: true))).ToList();
rankings = GroupRanking.Sort(rankings);
return(rankings.ToDictionary(r => rankings.IndexOf(r) + 1, r => r));
}
