45 lines
1.9 KiB
C#
45 lines
1.9 KiB
C#
using LehrerApp.Core.Models;
|
|
|
|
namespace LehrerApp.Core.Services;
|
|
|
|
public record AttendanceBalance(
|
|
int TotalChecked, int Present, int Excused, int Unexcused,
|
|
int SchoolEvent, int ExcusePending, double AbsenceRatePercent)
|
|
{
|
|
public bool ExceedsThreshold => AbsenceRatePercent > AttendanceBalanceService.WarningThresholdPercent;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Fehlzeitenbilanz (5.2.2/5.2.3) — reine Auswertung der bereits im Mitarbeit-Feature
|
|
/// erfassten <see cref="AttendanceStatus"/>-Werte, keine zweite Erfassung.
|
|
/// </summary>
|
|
public class AttendanceBalanceService
|
|
{
|
|
public const double WarningThresholdPercent = 20.0;
|
|
|
|
public AttendanceBalance Calculate(IEnumerable<(DateOnly Date, AttendanceStatus? Status)> entries,
|
|
DateOnly from, DateOnly to)
|
|
{
|
|
var relevant = entries
|
|
.Where(e => e.Status.HasValue && e.Date >= from && e.Date <= to)
|
|
.Select(e => e.Status!.Value)
|
|
.ToList();
|
|
|
|
var present = relevant.Count(s => s is AttendanceStatus.Present
|
|
or AttendanceStatus.Late or AttendanceStatus.SignificantlyLate);
|
|
var excused = relevant.Count(s => s == AttendanceStatus.Excused);
|
|
var unexcused = relevant.Count(s => s is AttendanceStatus.Unexcused
|
|
or AttendanceStatus.Truant or AttendanceStatus.LeftDuringClass);
|
|
var schoolEvent = relevant.Count(s => s is AttendanceStatus.OtherSchoolEvent
|
|
or AttendanceStatus.LearningIsland or AttendanceStatus.Suspended);
|
|
var pending = relevant.Count(s => s == AttendanceStatus.ExcusePending);
|
|
var total = relevant.Count;
|
|
|
|
// Schulisch veranlasste Abwesenheit (Exkursion o.ä.) zählt nicht als Fehlzeit des Schülers.
|
|
var absenceCount = excused + unexcused + pending;
|
|
var rate = total == 0 ? 0.0 : Math.Round(100.0 * absenceCount / total, 1);
|
|
|
|
return new AttendanceBalance(total, present, excused, unexcused, schoolEvent, pending, rate);
|
|
}
|
|
}
|