Add Blazor WebApp and rework data handling to utilize Entity Framework

This commit is contained in:
2025-09-11 11:49:48 -04:00
parent 5220e61c79
commit 3daa3b81b3
111 changed files with 6039 additions and 946 deletions
-20
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@@ -1,20 +0,0 @@
using Core.Entities;
namespace Core.Calculation;
public class DataProcessing
{
public static EventStudentPicks[] GetEventStudentPicks(IList<CompetitiveEvent> events, IList<Student> students)
{
return
students.SelectMany(
student => student.RankedEventPicks.Select((e, i) => (e, student, i + 1)))
.OrderBy(tuple => tuple.Item3)
.ThenByDescending(tuple => tuple.student.Grade + tuple.student.TsaYear)
.GroupBy(tuple => tuple.e)
.OrderBy(tuples => tuples.Key.Name)
.Select(tuples =>
new EventStudentPicks(tuples.Key, tuples.Select(tuple => Tuple.Create(tuple.student, tuple.Item3)).ToList())
).ToArray();
}
}
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using System.Diagnostics;
using Core.Entities;
using Google.OrTools.Sat;
using IntVar = Google.OrTools.Sat.IntVar;
namespace Core.Calculation
{
public class EventAssigner
{
private readonly IList<CompetitiveEvent> _events;
private readonly IList<Student> _students;
private readonly AssignmentParameters _parameters;
private readonly int[] _allEvents;
private readonly int[] _allStudents;
// how many students have picked each event?
private readonly int[] _eventPickCounts;
private IList<EventAssignment> _preAssigned = new List<EventAssignment>();
private IList<EventAssignment> _prohibited = new List<EventAssignment>();
private IList<CompetitiveEvent> _droppedEvents;
private IList<CompetitiveEvent> _includedEvents;
public EventAssigner(IList<CompetitiveEvent> events, IList<Student> students, AssignmentParameters parameters)
{
_events = events;
_students = students;
_parameters = parameters;
_allEvents = Enumerable.Range(0, _events.Count).ToArray();
_allStudents = Enumerable.Range(0, _students.Count).ToArray();
_eventPickCounts = new int[_allEvents.Length];
_preAssigned = new List<EventAssignment>();
_droppedEvents = new List<CompetitiveEvent>();
_includedEvents = new List<CompetitiveEvent>();
for (var i = 0; i < _events.Count; i++)
{
var e = _events[i];
_eventPickCounts[i] = _students.Count(s => s.RankedEventPicks.Contains(e));
}
}
public void AssignToEvent(EventAssignment preAssigned)
{
_preAssigned.Add(preAssigned);
}
public void ExcludeFromEvent(EventAssignment prohibited)
{
_prohibited.Add(prohibited);
}
public void RemoveEvent(IList<CompetitiveEvent> events)
{
_droppedEvents = events;
}
public void IncludedEvents(IList<CompetitiveEvent> events)
{
_includedEvents = events;
}
public class SolutionPrinter : CpSolverSolutionCallback
{
private readonly IList<CompetitiveEvent> _events;
private readonly IList<Student> _students;
private readonly BoolVar[,] _eventAssignment;
public SolutionPrinter(IList<CompetitiveEvent> events, IList<Student> students, BoolVar[,] eventAssignment)
{
_events = events;
_students = students;
_eventAssignment = eventAssignment;
}
public override void OnSolutionCallback()
{
Console.WriteLine($"Solution ");
foreach (var evt in Enumerable.Range(0,_events.Count))
{
foreach (var student in Enumerable.Range(0, _students.Count))
{
if (Value(_eventAssignment[evt, student]) == 1L)
{
}
}
}
}
}
public Team[] Solve()
{
// Model.
var model = new CpModel();
// Variables.
var x = new BoolVar[_allEvents.Length, _allStudents.Length];
foreach (var e in _allEvents)
foreach (var s in _allStudents)
x[e, s] = model.NewBoolVar($"eventAssignments[{e},{s}]");
foreach (var preAssignment in _preAssigned)
{
var e = _events.IndexOf(preAssignment.Event);
var s = _students.IndexOf(preAssignment.Student);
model.AddAssumption(x[e, s]);
}
foreach (var prohibit in _prohibited)
{
var e = _events.IndexOf(prohibit.Event);
var s = _students.IndexOf(prohibit.Student);
var prohibitVar = new List<IntVar> { x[e, s] };
model.AddLinearConstraint(LinearExpr.Sum(prohibitVar), 0, 0);
prohibitVar.Clear();
}
// Limit the capacity of each event
foreach (var e in _allEvents)
{
var evt = _events[e];
var eventPickCounts = _eventPickCounts[e];
var evtMinTeamSize = evt.MinTeamSize;
var evtMaxTeamSize = evt.MaxTeamSize;
var teamDivs = eventPickCounts / (evtMinTeamSize * 1.0);
if (_includedEvents.Contains(evt))
teamDivs = 1;
//var teamsCount = (int)Math.Ceiling(teamDivs);
var teamCount = (int)Math.Round(teamDivs);
if (teamCount > evt.MaxTeamCountState)
teamCount = evt.MaxTeamCountState;
// limit to one team for group events
if (_parameters.LimitTeamsToOne && evt.Format is EventFormat.Team && teamCount > 1) teamCount = 1;
if (evt.Name == "Tech Bowl")
teamCount = 1;
var eventCapacity = new List<IntVar>();
foreach (var s in _allStudents)
{
eventCapacity.Add(x[e, s]);
}
if (_droppedEvents != null && _droppedEvents.Contains(evt))
teamCount = 0;
var lb = evtMinTeamSize * teamCount;
var ub = Math.Min(evtMaxTeamSize * teamCount, _parameters.TeamSizeLimit);
model.AddLinearConstraint(LinearExpr.Sum(eventCapacity), lb, ub);
Debug.WriteLine($"{evt.Name,30}\t{evt.Format,-10}\t{lb} - {ub}");
model.Minimize(LinearExpr.Sum(eventCapacity));
eventCapacity.Clear();
}
// Limit the number of events a student is assigned
foreach (var s in _allStudents)
{
var student = _students[s];
var studentCapacity = new List<IntVar>();
foreach (var e in _allEvents)
{
studentCapacity.Add(x[e, s]);
}
model.AddLinearConstraint(LinearExpr.Sum(studentCapacity), _parameters.AssignmentLowerBound, _parameters.AssignmentUpperBound);
studentCapacity.Clear();
}
var eventEffortCoefficients = GetEventEffortCoefficients(_events);
foreach (var s in _allStudents)
{
var effortVar = new BoolVar[_allEvents.Length];
foreach (var e in _allEvents)
{
effortVar[e] = x[e, s];
}
var student = _students[s];
var experienceOffset = 0;
switch (student.TsaYear)
{
case 1: experienceOffset = 1; break;
default: break;
}
var ub = _parameters.EffortUpperBound - experienceOffset;
var lb = _parameters.EffortLowerBound;
if (ub <= lb)
lb = ub - 1;
model.Add(LinearExpr.WeightedSum(effortVar, eventEffortCoefficients) >= lb);
model.Add(LinearExpr.WeightedSum(effortVar, eventEffortCoefficients) <= ub);
}
// each student should be assigned at least one on site activity event
foreach (var s in _allStudents)
{
var onSiteActivity = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].OnSiteActivity)
onSiteActivity.Add(x[e, s]);
}
if (_parameters.RequireOnSite)
model.AddAtLeastOne(onSiteActivity);
onSiteActivity.Clear();
}
// students should have at maximum one individual event
foreach (var s in _allStudents)
{
var individualEvent = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].Format == EventFormat.Individual)
individualEvent.Add(x[e, s]);
}
model.AddAtMostOne(individualEvent);
individualEvent.Clear();
}
// students should have at maximum regional events
foreach (var s in _allStudents)
{
var regionalEvent = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].RegionalEvent)
regionalEvent.Add(x[e, s]);
}
if (_parameters.RequireRegional)
model.AddLinearConstraint(LinearExpr.Sum(regionalEvent), 1, 2);
regionalEvent.Clear();
}
var maximizePicks = LinearExpr.NewBuilder();
// optimize student selections
foreach (var s in _allStudents)
{
var eventPickCoefficients = GetEventPickCoefficients(_students[s].RankedEventPicks, _events);
foreach (var e in _allEvents)
{
maximizePicks.AddTerm(x[e, s], eventPickCoefficients[e]);
}
}
model.Maximize(maximizePicks);
var solver = new CpSolver();
var cpSolverStatus = solver.Solve(model);
// print solver status
Console.WriteLine($"Solver status: {cpSolverStatus}");
var eventAssignmentsList = new List<Team>();
if (cpSolverStatus == CpSolverStatus.Optimal || cpSolverStatus == CpSolverStatus.Feasible)
{
foreach (var e in _allEvents)
{
var students = new List<Student>();
foreach (var s in _allStudents)
{
if (solver.BooleanValue(x[e, s]))
{
students.Add(_students[s]);
//Console.WriteLine($"{_events[evt].Name} : {_students[s].Name}");
}
}
if (students.Count > 0)
eventAssignmentsList.Add(new Team(_events[e].Name, _events[e], students));
}
}
else
{
//Console.WriteLine("No solution found.");
}
return eventAssignmentsList.ToArray();
}
private long[] GetEventPickCoefficients(IList<CompetitiveEvent> rankedEvents, IEnumerable<CompetitiveEvent> events)
{
var eventPickCount = rankedEvents.Count;
return
events.Select(e =>
{
var eventPickIndex = rankedEvents.IndexOf(e);
return eventPickIndex switch
{
0 => eventPickCount + 1,
1 => eventPickCount + 0,
> 1 => eventPickCount ,
_ => 0L
};
}).ToArray();
}
private long[] GetEventEffortCoefficients(IEnumerable<CompetitiveEvent> events)
{
return
events.Select(e => e.Name == "Tech Bowl" ? 0 : e.LevelOfEffort.HasValue ? e.LevelOfEffort.Value : 10L).ToArray();
}
}
}
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using System.Diagnostics;
using System.Security.Cryptography.X509Certificates;
using Core.Entities;
using Google.OrTools.Sat;
using Microsoft.EntityFrameworkCore.Metadata;
using IntVar = Google.OrTools.Sat.IntVar;
namespace Core.Calculation
{
public class EventAssignment
{
private readonly IList<EventDefinition> _events;
private readonly IList<Student> _students;
private readonly AssignmentParameters _parameters;
private readonly int[] _allEvents;
private readonly int[] _allStudents;
// how many students have picked each eventDefinition?
private readonly int[] _eventPickCounts;
private IList<AssignmentRequirement> _assignmentRequirements = new List<AssignmentRequirement>();
private IList<EventDefinition> _droppedEvents = new List<EventDefinition>();
private IList<EventDefinition> _includedEvents = new List<EventDefinition>();
private IList<EventDefinition> _twoTeams = new List<EventDefinition>();
public EventAssignment(IList<EventDefinition> events, IList<Student> students, AssignmentParameters parameters)
{
_events = events;
_students = students;
_parameters = parameters;
_allEvents = Enumerable.Range(0, _events.Count).ToArray();
_allStudents = Enumerable.Range(0, _students.Count).ToArray();
_eventPickCounts = new int[_allEvents.Length];
for (var i = 0; i < _events.Count; i++)
{
var e = _events[i];
_eventPickCounts[i] = _students.Count(s => s.EventRankings.Count(er => er.EventDefinition == e) > 0);
}
}
public void AddAssignmentRequirement(AssignmentRequirement assignmentRequirement)
{
_assignmentRequirements.Add(assignmentRequirement);
}
public void RemoveEvents(IList<EventDefinition> events)
{
_droppedEvents = events;
}
public void IncludedEvents(IList<EventDefinition> events)
{
_includedEvents = events;
}
public void AllowTwoTeams(IList<EventDefinition> events)
{
_twoTeams = events;
}
public async Task<EventAssignmentSolution> Solve()
{
Debug.WriteLine(_parameters);
// Model.
var model = new CpModel();
// Variables.
var x = new BoolVar[_allEvents.Length, _allStudents.Length];
foreach (var e in _allEvents)
foreach (var s in _allStudents)
x[e, s] = model.NewBoolVar($"eventAssignments[{e},{s}]");
AddAssignmentRequirements(model, x);
var assignmentThresholdsList = AddEventAssignmentThresholds(model, x);
LimitStudentAssignment(model, x);
// set the range for level of effort
var eventEffortCoefficients = GetEventEffortCoefficients(_events);
SetLevelOfEffort(model, x, eventEffortCoefficients);
// each student should be assigned at least one on site activity eventDefinition
if (_parameters.RequireOnSite)
RequireOnSiteActivity(model, x);
// students should have at maximum one individual eventDefinition
LimitIndividualEvent(model, x);
// students should have at least one regional event
if (_parameters.RequireRegional)
RequireRegionalEvent(model, x);
OptimizeStudentEventRankings(model, x);
Debug.WriteLine("Starting optimization");
var solver = new CpSolver();
var cpSolverStatus = await Task.Run(() => solver.Solve(model));
// print solver status
Debug.WriteLine($"Solver status: {cpSolverStatus}");
var eventAssignmentsList = GetEventAssignments(x, solver, cpSolverStatus);
var eventAssignmentSolution =
new EventAssignmentSolution
(
eventAssignmentsList.ToArray(),
cpSolverStatus.ToString(),
assignmentThresholdsList
);
return eventAssignmentSolution;
}
private List<Team> GetEventAssignments(BoolVar[,] x, CpSolver solver, CpSolverStatus cpSolverStatus)
{
var eventAssignmentsList = new List<Team>();
if (cpSolverStatus == CpSolverStatus.Optimal || cpSolverStatus == CpSolverStatus.Feasible)
{
foreach (var e in _allEvents)
{
var students = new List<Student>();
foreach (var s in _allStudents)
{
if (solver.BooleanValue(x[e, s]))
{
students.Add(_students[s]);
}
}
if (students.Count > 0)
eventAssignmentsList.Add(new Team { TeamId = _events[e].Name, Event = _events[e], Students = students});
}
}
return eventAssignmentsList;
}
private void OptimizeStudentEventRankings(CpModel model, BoolVar[,] x)
{
var maximizePicks = LinearExpr.NewBuilder();
// optimize student event rankings
foreach (var s in _allStudents)
{
var eventPickCoefficients = GetEventPickCoefficients(_events, _students[s].EventRankings);
foreach (var e in _allEvents)
{
maximizePicks.AddTerm(x[e, s], eventPickCoefficients[e]);
}
}
model.Maximize(maximizePicks);
}
private void RequireRegionalEvent(CpModel model, BoolVar[,] x)
{
foreach (var s in _allStudents)
{
var regionalEvent = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].RegionalEvent)
regionalEvent.Add(x[e, s]);
}
//if (_parameters.RequireRegional)
model.AddLinearConstraint(LinearExpr.Sum(regionalEvent), 1, 2);
regionalEvent.Clear();
}
}
private void LimitIndividualEvent(CpModel model, BoolVar[,] x)
{
foreach (var s in _allStudents)
{
var individualEvent = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].EventFormat == EventFormat.Individual)
individualEvent.Add(x[e, s]);
}
model.AddAtMostOne(individualEvent);
individualEvent.Clear();
}
}
private void RequireOnSiteActivity(CpModel model, BoolVar[,] x)
{
foreach (var s in _allStudents)
{
var onSiteActivity = new List<ILiteral>();
foreach (var e in _allEvents)
{
if (_events[e].OnSiteActivity)
onSiteActivity.Add(x[e, s]);
}
//if (_parameters.RequireOnSite)
model.AddAtLeastOne(onSiteActivity);
onSiteActivity.Clear();
}
}
private void SetLevelOfEffort(CpModel model, BoolVar[,] x, long[] eventEffortCoefficients)
{
foreach (var s in _allStudents)
{
var effortVar = new BoolVar[_allEvents.Length];
foreach (var e in _allEvents)
{
effortVar[e] = x[e, s];
}
var student = _students[s];
var experienceOffset = 0;
switch (student.TsaYear)
{
case 1: experienceOffset = 1; break;
default: break;
}
var ub = _parameters.EffortUpperBound - experienceOffset;
var lb = _parameters.EffortLowerBound;
if (ub <= lb)
lb = ub - 1;
model.Add(LinearExpr.WeightedSum(effortVar, eventEffortCoefficients) >= lb);
model.Add(LinearExpr.WeightedSum(effortVar, eventEffortCoefficients) <= ub);
}
}
private void LimitStudentAssignment(CpModel model, BoolVar[,] x)
{
// Limit the number of events a student is assigned
foreach (var s in _allStudents)
{
var studentCapacity = new List<IntVar>();
foreach (var e in _allEvents)
{
studentCapacity.Add(x[e, s]);
}
model.AddLinearConstraint(
LinearExpr.Sum(studentCapacity), _parameters.EventsLowerBound, _parameters.EventsUpperBound);
studentCapacity.Clear();
}
}
private List<EventAssignmentThresholds> AddEventAssignmentThresholds(CpModel model, BoolVar[,] x)
{
var assignmentThresholdsList = new List<EventAssignmentThresholds>();
// Limit the capacity of each event
foreach (var e in _allEvents)
{
var evt = _events[e];
var eventPickCounts = _eventPickCounts[e];
var evtMinTeamSize = evt.MinTeamSize;
var evtMaxTeamSize = evt.MaxTeamSize;
var teamDivs = eventPickCounts / (evtMinTeamSize * 1.25);
if (_includedEvents.Contains(evt))
teamDivs = 1;
//var teamsCount = (int)Math.Ceiling(teamDivs);
var teamCount = (int)Math.Round(teamDivs);
if (teamCount > evt.MaxTeamCountState)
teamCount = evt.MaxTeamCountState;
// limit to one team for group events
if (_parameters.LimitTeamsToOne
&& evt.EventFormat is EventFormat.Team
&& teamCount > 1
&& !_twoTeams.Contains(evt)
)
teamCount = 1;
if (evt.Name == "Tech Bowl")
teamCount = 1;
var eventCapacity = new List<IntVar>();
foreach (var s in _allStudents)
{
eventCapacity.Add(x[e, s]);
}
if (_droppedEvents != null && _droppedEvents.Contains(evt))
teamCount = 0;
var lb = evtMinTeamSize * teamCount;
var ub = Math.Min(evtMaxTeamSize * teamCount, _parameters.TeamSizeLimit * teamCount);
assignmentThresholdsList.Add(
new EventAssignmentThresholds
{
Event = evt,
TeamCount = teamCount,
LowerBound = evtMinTeamSize,
UpperBound = evtMaxTeamSize,
StudentRankingCount = eventPickCounts
});
model.AddLinearConstraint(LinearExpr.Sum(eventCapacity), lb, ub);
Debug.WriteLine($"{evt.Name,30}\t{evt.EventFormat,-10}\t{lb} - {ub}");
model.Minimize(LinearExpr.Sum(eventCapacity));
eventCapacity.Clear();
}
return assignmentThresholdsList;
}
private void AddAssignmentRequirements(CpModel model, BoolVar[,] x)
{
foreach (var includedAssignment in _assignmentRequirements.Where(e => e.Requirement == Requirement.Include))
{
var e = _events.IndexOf(includedAssignment.EventDefinition);
var s = _students.IndexOf(includedAssignment.Student);
model.AddAssumption(x[e, s]);
}
foreach (var excludedAssignment in _assignmentRequirements.Where(e => e.Requirement == Requirement.Exclude))
{
var e = _events.IndexOf(excludedAssignment.EventDefinition);
var s = _students.IndexOf(excludedAssignment.Student);
var prohibitVar = new List<IntVar> { x[e, s] };
model.AddLinearConstraint(LinearExpr.Sum(prohibitVar), 0, 0);
prohibitVar.Clear();
}
}
private static long[] GetEventPickCoefficients(IList<EventDefinition> events, List<StudentEventRanking> eventRankings)
{
return
events.Select(e =>
{
var eventRank = eventRankings.FirstOrDefault(er => er.EventDefinition == e);
return
eventRank == null
? 0L
: StudentEventRanking.MaxRank - eventRank.Rank; // inverse
}).ToArray();
}
private long[] GetEventEffortCoefficients(IEnumerable<EventDefinition> events)
{
return
events.Select(
e =>
//e.Name == "Tech Bowl"
// ? 0 // Tech bowl gets requires no effort?
//:
e.LevelOfEffort ?? 10L
).ToArray();
}
public class SolutionPrinter : CpSolverSolutionCallback
{
private readonly IList<EventDefinition> _events;
private readonly IList<Student> _students;
private readonly BoolVar[,] _eventAssignment;
public SolutionPrinter(IList<EventDefinition> events, IList<Student> students, BoolVar[,] eventAssignment)
{
_events = events;
_students = students;
_eventAssignment = eventAssignment;
}
public override void OnSolutionCallback()
{
Console.WriteLine($"Solution ");
foreach (var evt in Enumerable.Range(0, _events.Count))
{
foreach (var student in Enumerable.Range(0, _students.Count))
{
if (Value(_eventAssignment[evt, student]) == 1L)
{
}
}
}
}
}
}
}
@@ -0,0 +1,13 @@
using Core.Entities;
namespace Core.Calculation;
public class EventAssignmentSolution(
Team[] teams,
string status,
List<EventAssignmentThresholds> assignmentThresholds)
{
public Team[] Teams { get; set; } = teams;
public string Status { get; set; } = status;
public List<EventAssignmentThresholds> AssignmentThresholds { get; } = assignmentThresholds;
}
@@ -0,0 +1,12 @@
using Core.Entities;
namespace Core.Calculation;
public class EventAssignmentThresholds
{
public EventDefinition Event { get; set; }
public int TeamCount { get; set; }
public int LowerBound { get; set; }
public int UpperBound { get; set; }
public int StudentRankingCount { get; set; }
}
@@ -0,0 +1,10 @@
namespace Core.Calculation;
public enum UnassignedScheduleStrategy
{
BiggestGroup,
IndividualEvents,
AnyNotMeetingAlready,
LevelOfEffort,
Any
}
+5 -14
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@@ -2,15 +2,6 @@
namespace Core.Calculation;
public enum UnassignedScheduleStrategy
{
BiggestGroup,
IndividualEvents,
AnyNotMeetingAlready,
LevelOfEffort,
Any
}
public class UnassignedStudentScheduler
{
private readonly IList<Student> _students;
@@ -86,21 +77,21 @@ public class UnassignedStudentScheduler
_teams
.Where(t => scheduledTeams.All(st => st.Name != t.Name))
.Select(t => t.CloneWithOmittedStudents(assignedStudents))
.Where(t => t.Students.Count > 1) //|| t.Event.Format is EventFormat.Individual
.Where(t => t.Students.Count > 1) //|| t.Event.EventFormat is EventFormat.Individual
//.OrderBy(t => scheduledTeams.Count(st => st.Name == t.Name))
.OrderByDescending(t => t.Students.Count); // select descending greatest number of students assigned
//.ThenBy(t => Random.Shared.Next()); // todo: sort by student historic record of event assignment
//.ThenBy(t => Random.Shared.Next()); // todo: sort by student historic record of eventDefinition assignment
// find individual events unassigned students can work on
private IEnumerable<Team> GetAvailableTeams_Individual(
IEnumerable<Team> scheduledTeams, IEnumerable<Student> assignedStudents) =>
_teams
.Where(t => scheduledTeams.All(st => st.Name != t.Name))
.Where(t => t.Event.Format == EventFormat.Individual || t.Students.Count == 1)
.Where(t => t.Event.EventFormat == EventFormat.Individual || t.Students.Count == 1)
.Select(t => t.CloneWithOmittedStudents(assignedStudents))
.Where(t => t.Students.Count > 0);
// find any unassigned event students can work on
// find any unassigned eventDefinition students can work on
private IEnumerable<Team> GetAvailableTeams_AnyNotMeetingAlready(
IEnumerable<Team> scheduledTeams, IEnumerable<Student> assignedStudents) =>
_teams
@@ -121,7 +112,7 @@ public class UnassignedStudentScheduler
_teams
.Where(t => scheduledTeams.All(st => st.Name != t.Name))
.Select(t => t.CloneWithOmittedStudents(assignedStudents))
.Where(t => t.Students.Count > 1) //|| t.Event.Format is EventFormat.Individual
.Where(t => t.Students.Count > 1) //|| t.Event.EventFormat is EventFormat.Individual
//.OrderBy(t => scheduledTeams.Count(st => st.Name == t.Name))
.OrderByDescending(t => t.Event.LevelOfEffort); // select descending greatest number of students assigned