/*
* LEAGUE
*
* input
* - list of teams (ids)
* - start date
* - weekdays available
* - with range of hours
* - days forbidden
* - list of play fields
* - with their availability
* - game duration (minutes)
* - is preview?
*
* output:
* - a collection of days, each containing:
* - date
* - list of matches, each containing:
* - teams
* - hour
* - play field
* - status: scheduled
*
* Notes:
* - First create a list of matches per day, then spread it in the available slots.
* - From the number of teams, the algorithm can predict how many slots are needed in each day
* (it's the same as the number of teams). This should be used in the UI to set up the
* calendar parameters.
* - To create the list of matches per day, start with the list of teams.
* - In the UI, allow the organizer to order them any way the want (display a message for this).
* - Then do every possible combination. If odd number of teams, one will be left out each round, in order.
* - To spread the matches in slots, randomize the list and assign to slots.
* - Have to consider the "home" setting of each team. Only one team should play at home, but then,
* what if two have then same home? no matter what, they will have to play, and their home won't
* change.
*
* Should this be implemented in the server instead? Having this not validated on the client implies an
* organizer can mess the calendar. Is it possible that it can ultimately generate payments to users?
* In the server this could be implemented as a simple API call that calculates the preview. An argument
* can decide whether the generated result is just a preview or has to be commited to the DB.
* Since the game field availability is a lot of data that has to be queried to the database, it's
* benefitial to do it on the server side.
*
* Test environment for this.
*/
/// <summary>
///
/// </summary>
/// <param name="input"></param>
/// <param name="fields">List of fields, including matches already scheduled to consider in the plan</param>
/// <returns></returns>
public static CalendarResult Calculate(CalendarGenInput input, IList <Field> fields, string locale, TeamLocationPreferenceProviderDelegate preferenceProvider, TeamNameProvider nameProvider)
{
//-First create a list of matches per round, then spread it in the available slots.
// - From the number of teams, the algorithm can predict how many slots are needed in each round
// (it's the same as the number of teams). This should be used in the UI to set up the
// calendar parameters.
// -To create the list of matches per round, start with the list of teams.
// - In the UI, allow the organizer to order them any way the want(display a message for this).
// - Then apply the round robin algorithm, preserving the first entry in the list.
// - To spread the matches in slots, randomize each round list and assign to slots in sequence.
// - Have to consider the "home" setting of each team. Only one team should play at home, but then,
// what if two have the same home? no matter what, they will have to play, and their home won't
// change.
Assert.IsNotNull(input);
Assert.IsNotNull(input.TeamIds);
Assert.IsNotNull(input.WeekdaySlots);
Assert.IsNotNull(input.FieldIds);
var result = new CalendarResult();
if (input.TeamIds.Length <= 2)
{
throw new PlannerException("Error.Calendar.NotEnoughTeams");
}
var teams = input.TeamIds;
var oddNumTeams = teams.Length % 2 == 1;
if (oddNumTeams)
{
// Add a "free day" team (id = -1)
Array.Resize(ref teams, teams.Length + 1);
teams[teams.Length - 1] = -1;
}
var numSlotsNeededPerRound = teams.Length / 2;
//var numFields = input.FieldIds.Length;
//var availableTimeSlots = PlannerScheduler.GetTimeSlots(input.WeekdaySlots, input.GameDuration);
//var availableSlots = availableTimeSlots * numFields;
//if (availableSlots < numSlotsNeededPerRound) throw new PlannerException("Error.Calendar.NotEnoughHours");
var matchRounds = CreateRoundRobinMatches(teams, input.NumRounds);
string roundNameCallback(int index) => Localization.Get("Jornada {0}", locale, index);
var locationPreferences = preferenceProvider?.Invoke(input.TeamIds);
// Now assign matches to days. Consider field availability.
PlannerScheduler.SpreadMatchesInCalendar(
result,
matchRounds,
input.WeekdaySlots,
input.StartDate,
input.FieldIds,
numSlotsNeededPerRound,
input.GameDuration,
input.RandomizeFields,
input.Group,
input.ForbiddenDays,
locationPreferences,
roundNameCallback);
return(result);
}
public static CalendarResult Calculate(CalendarGenInput input, IList <Field> fields, string locale, TeamLocationPreferenceProviderDelegate preferenceProvider, IDbConnection c)
{
Assert.IsNotNull(input);
Assert.IsNotNull(input.TeamIds);
Assert.IsNotNull(input.WeekdaySlots);
Assert.IsNotNull(input.FieldIds);
var result = new CalendarResult();
var teams = input.TeamIds;
bool noTeamsDefined = teams.Length == 0;
int numberOfTeams = 0;
if (noTeamsDefined) // No teams defined yet.
{
long idGroup = input.Group.IdGroup;
numberOfTeams = c.QueryFirst <int>($"SELECT numteams FROM stageGroups WHERE id = {idGroup};");
}
else
{
numberOfTeams = teams.Length;
}
if (!IsPowerOfTwo(numberOfTeams))
{
throw new PlannerException("Error.NotPowerOfTwo");
}
// Should also check that teams are actually valid (!= -1)
var matchRounds = CreateRounds(teams, input.Group, numberOfTeams);
string roundNameCallback(int index) => GetRoundName(index, matchRounds.Count, locale);
var numSlotsNeededPerRound = numberOfTeams / 2;
//var numFields = input.FieldIds.Length;
//var availableTimeSlots = PlannerScheduler.GetTimeSlots(input.WeekdaySlots, input.GameDuration);
//var availableSlots = availableTimeSlots * numFields;
//if (availableSlots < numSlotsNeededPerRound) throw new PlannerException("Error.Calendar.NotEnoughHours");
var teamPrefs = noTeamsDefined ? null : preferenceProvider?.Invoke(input.TeamIds);
PlannerScheduler.SpreadMatchesInCalendar(
result,
matchRounds,
input.WeekdaySlots,
input.StartDate,
input.FieldIds,
numSlotsNeededPerRound,
input.GameDuration,
false,
input.Group,
input.ForbiddenDays,
teamPrefs,
roundNameCallback);
return(result);
}