464 lines
15 KiB
C#
464 lines
15 KiB
C#
using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Input;
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using LehrerApp.Core.Interfaces;
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using LehrerApp.Core.Models;
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using System.Collections.ObjectModel;
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namespace LehrerApp.Desktop.ViewModels.Groups;
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// ── Tab-ViewModel ─────────────────────────────────────────────────────────────
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public partial class ParticipationTabViewModel : ObservableObject
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{
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private readonly IParticipationSessionRepository _sessions;
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private readonly IParticipationRepository _entries;
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private readonly IParticipationAspectRepository _aspects;
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private readonly IStudentRepository _students;
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private Guid _groupId;
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private string _schoolYear = "";
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[ObservableProperty] private ParticipationSessionItem? _selectedSession;
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[ObservableProperty] private string _noDataText = "Keine Bewertungssitzung ausgewählt.";
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public string SelectedSessionDisplay => SelectedSession?.Display ?? "";
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public ObservableCollection<ParticipationSessionItem> Sessions { get; } = [];
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public ObservableCollection<ParticipationStudentRow> StudentRows { get; } = [];
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public ObservableCollection<AspectColumnDef> Aspects { get; } = [];
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public Func<Task<ParticipationSession?>>? OnAddSession { get; set; }
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public Func<ParticipationTabViewModel, Task>? OnQuickInput { get; set; }
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public ParticipationTabViewModel(
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IParticipationSessionRepository sessions,
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IParticipationRepository entries,
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IParticipationAspectRepository aspects,
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IStudentRepository students)
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{
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_sessions = sessions; _entries = entries;
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_aspects = aspects; _students = students;
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}
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public void Initialize(Guid groupId, string schoolYear)
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{
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_groupId = groupId;
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_schoolYear = schoolYear;
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LoadAspects();
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LoadSessions();
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}
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private void LoadAspects()
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{
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Aspects.Clear();
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var defaults = _aspects.GetDefaults();
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var specific = _aspects.GetByGroup(_groupId);
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var all = defaults.Concat(specific).ToList();
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if (!all.Any())
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{
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foreach (var a in DefaultParticipationAspects.All)
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Aspects.Add(new AspectColumnDef(a));
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}
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else
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{
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foreach (var a in all) Aspects.Add(new AspectColumnDef(a));
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}
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}
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public void LoadSessions()
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{
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Sessions.Clear();
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foreach (var s in _sessions.GetByGroup(_groupId))
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Sessions.Add(new ParticipationSessionItem(s));
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if (SelectedSession is null && Sessions.Any())
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SelectedSession = Sessions[0];
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}
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partial void OnSelectedSessionChanged(ParticipationSessionItem? value)
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{
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OnPropertyChanged(nameof(SelectedSessionDisplay));
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if (value is null) { StudentRows.Clear(); QuickInputCommand.NotifyCanExecuteChanged(); return; }
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LoadGrid(value.Id);
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}
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private void LoadGrid(Guid sessionId)
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{
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StudentRows.Clear();
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var students = _students.GetByGroup(_groupId, _schoolYear);
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var entries = _entries.GetBySession(sessionId);
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foreach (var s in students)
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{
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var entry = entries.FirstOrDefault(e => e.StudentId == s.Id)
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?? new ParticipationEntry { SessionId = sessionId, GroupId = _groupId, StudentId = s.Id };
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var row = new ParticipationStudentRow(s.Id, s.FullName, entry, Aspects.ToList());
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row.OnRatingChanged = (studentId, key, val) => SaveRating(sessionId, studentId, key, val);
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StudentRows.Add(row);
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}
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QuickInputCommand.NotifyCanExecuteChanged();
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}
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private void SaveRating(Guid sessionId, Guid studentId, string key, int? value)
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{
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var session = _sessions.GetById(sessionId);
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var entry = _entries.GetBySessionAndStudent(sessionId, studentId)
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?? new ParticipationEntry
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{
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SessionId = sessionId,
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GroupId = _groupId,
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StudentId = studentId,
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Date = session?.Date ?? DateOnly.FromDateTime(DateTime.Today),
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};
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var existing = entry.Ratings.FirstOrDefault(r => r.Key == key);
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if (value is null)
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{
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if (existing is not null) entry.Ratings.Remove(existing);
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}
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else
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{
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if (existing is null) entry.Ratings.Add(new AspectRating { Key = key, Value = value.Value });
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else existing.Value = value.Value;
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}
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_entries.Save(entry);
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}
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[RelayCommand]
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private async Task AddSession()
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{
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if (OnAddSession is null) return;
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var session = await OnAddSession();
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if (session is null) return;
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session.GroupId = _groupId;
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_sessions.Save(session);
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LoadSessions();
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SelectedSession = Sessions.FirstOrDefault(s => s.Id == session.Id);
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}
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[RelayCommand(CanExecute = nameof(CanQuickInput))]
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private async Task QuickInput()
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{
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if (OnQuickInput is null) return;
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await OnQuickInput(this);
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if (SelectedSession is not null) LoadGrid(SelectedSession.Id);
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}
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private bool CanQuickInput() => SelectedSession is not null && StudentRows.Count > 0;
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[RelayCommand]
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private void DeleteSession()
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{
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if (SelectedSession is null) return;
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_sessions.Delete(SelectedSession.Id);
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LoadSessions();
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}
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public void SaveNote(Guid sessionId, Guid studentId, string note)
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{
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var entry = _entries.GetBySessionAndStudent(sessionId, studentId);
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if (entry is null) return;
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entry.Note = note;
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_entries.Save(entry);
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}
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}
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// ── Zeilendaten für das Bewertungsraster ─────────────────────────────────────
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public partial class ParticipationStudentRow : ObservableObject
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{
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public Guid StudentId { get; }
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public string Name { get; }
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private readonly ParticipationEntry _entry;
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private readonly IReadOnlyList<AspectColumnDef> _aspectDefs;
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public ObservableCollection<RatingCell> Cells { get; } = [];
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public Action<Guid, string, int?>? OnRatingChanged { get; set; }
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public ParticipationStudentRow(Guid id, string name, ParticipationEntry entry, List<AspectColumnDef> aspects)
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{
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StudentId = id;
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Name = name;
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_entry = entry;
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_aspectDefs = aspects;
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foreach (var a in aspects)
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{
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var existing = entry.Ratings.FirstOrDefault(r => r.Key == a.Key);
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var cell = new RatingCell(id, a.Key, existing?.Value);
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cell.OnChanged = (sid, key, val) => OnRatingChanged?.Invoke(sid, key, val);
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Cells.Add(cell);
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}
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}
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public int? GetRating(string key) =>
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_entry.Ratings.FirstOrDefault(r => r.Key == key)?.Value;
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public void SetRating(string key, int? value)
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{
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var cell = Cells.FirstOrDefault(c => c.AspectKey == key);
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cell?.SetValue(value);
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OnRatingChanged?.Invoke(StudentId, key, value);
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}
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}
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// ── Eine Bewertungszelle ──────────────────────────────────────────────────────
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public partial class RatingCell : ObservableObject
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{
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public Guid StudentId { get; }
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public string AspectKey { get; }
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[ObservableProperty] private int? _value;
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[ObservableProperty] private string _displayLabel = "";
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public Action<Guid, string, int?>? OnChanged { get; set; }
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public RatingCell(Guid studentId, string key, int? value)
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{
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StudentId = studentId;
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AspectKey = key;
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_value = value;
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UpdateLabel();
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}
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public void SetValue(int? value)
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{
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Value = value;
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UpdateLabel();
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OnChanged?.Invoke(StudentId, AspectKey, value);
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}
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[RelayCommand]
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private void CycleUp()
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{
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var next = Value is null ? -2 : Math.Min(2, Value.Value + 1);
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SetValue(next);
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}
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[RelayCommand]
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private void CycleDown()
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{
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var next = Value is null ? 2 : Math.Max(-2, Value.Value - 1);
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SetValue(next);
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}
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[RelayCommand]
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private void Clear() => SetValue(null);
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private void UpdateLabel() => DisplayLabel = Value switch
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{
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2 => "++",
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1 => "+",
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0 => "~",
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-1 => "−",
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-2 => "−−",
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_ => "",
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};
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}
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// ── Hilfsklassen ──────────────────────────────────────────────────────────────
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public class AspectColumnDef
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{
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public string Key { get; }
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public string Label { get; }
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public AspectColumnDef(ParticipationAspect a) { Key = a.Key; Label = a.Label; }
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}
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public class ParticipationSessionItem
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{
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public Guid Id { get; }
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public string Display { get; }
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public string Comment { get; }
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public DateOnly Date { get; }
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public ParticipationSessionItem(ParticipationSession s)
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{
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Id = s.Id;
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Date = s.Date;
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Comment = s.Comment ?? "";
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Display = s.Comment is { Length: > 0 }
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? $"{s.Date:dd.MM.yyyy} – {s.Comment}"
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: s.Date.ToString("dd.MM.yyyy");
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}
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}
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// ── Dialog: Sitzung anlegen ───────────────────────────────────────────────────
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public partial class AddSessionDialogViewModel : ObservableObject
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{
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[ObservableProperty] private DateOnly _date = DateOnly.FromDateTime(DateTime.Today);
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[ObservableProperty] private string _comment = "";
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[ObservableProperty] private string _dateText = DateOnly.FromDateTime(DateTime.Today).ToString("dd.MM.yyyy");
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[ObservableProperty] private string _validationMessage = "";
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public ParticipationSession? Result { get; private set; }
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[RelayCommand]
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private void Save()
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{
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if (!DateOnly.TryParseExact(DateText, "dd.MM.yyyy", null,
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System.Globalization.DateTimeStyles.None, out var date))
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{
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ValidationMessage = "Datum im Format TT.MM.JJJJ eingeben.";
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return;
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}
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Result = new ParticipationSession { Date = date, Comment = Comment.Trim() };
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}
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}
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// ── Dialog: Schnelleingabe ────────────────────────────────────────────────────
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public partial class QuickInputViewModel : ObservableObject
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{
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private readonly List<ParticipationStudentRow> _rows;
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private readonly List<AspectColumnDef> _aspects;
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[ObservableProperty] private int _studentIndex;
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[ObservableProperty] private int _aspectIndex;
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[ObservableProperty] private string _studentName = "";
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[ObservableProperty] private string _currentAspectLabel = "";
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[ObservableProperty] private string _currentValueLabel = "";
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[ObservableProperty] private string _progressText = "";
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public ObservableCollection<QuickAspectRow> AspectRows { get; } = [];
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public QuickInputViewModel(List<ParticipationStudentRow> rows, List<AspectColumnDef> aspects)
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{
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_rows = rows;
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_aspects = aspects;
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if (rows.Any()) ShowStudent(0);
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}
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private void ShowStudent(int index)
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{
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if (index < 0 || index >= _rows.Count) return;
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StudentIndex = index;
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var row = _rows[index];
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StudentName = row.Name;
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ProgressText = $"{index + 1} / {_rows.Count}";
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AspectRows.Clear();
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foreach (var (a, i) in _aspects.Select((a, i) => (a, i)))
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{
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var val = row.GetRating(a.Key);
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AspectRows.Add(new QuickAspectRow(i, a.Label, val, i == AspectIndex));
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}
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UpdateCurrentAspect();
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}
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private void UpdateCurrentAspect()
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{
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if (!_aspects.Any()) return;
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var safeIdx = Math.Clamp(AspectIndex, 0, _aspects.Count - 1);
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CurrentAspectLabel = _aspects[safeIdx].Label;
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var row = AspectRows.ElementAtOrDefault(safeIdx);
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CurrentValueLabel = row?.DisplayLabel ?? "";
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foreach (var r in AspectRows) r.IsActive = r.Index == safeIdx;
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}
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public void SetRatingByNumber(int num)
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{
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// 1=−−, 2=−, 3=~, 4=+, 5=++
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var val = num switch { 1 => -2, 2 => -1, 3 => 0, 4 => 1, 5 => 2, _ => (int?)null };
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if (val is null) return;
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ApplyRating(val.Value);
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}
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public void IncrementRating()
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{
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var cell = GetCurrentCell();
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if (cell is null) return;
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var next = cell.Value is null ? -2 : Math.Min(2, cell.Value.Value + 1);
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ApplyRating(next);
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}
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public void DecrementRating()
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{
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var cell = GetCurrentCell();
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if (cell is null) return;
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var next = cell.Value is null ? 2 : Math.Max(-2, cell.Value.Value - 1);
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ApplyRating(next);
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}
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private void ApplyRating(int val)
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{
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if (_rows.Count == 0 || !_aspects.Any()) return;
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var key = _aspects[Math.Clamp(AspectIndex, 0, _aspects.Count - 1)].Key;
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_rows[StudentIndex].SetRating(key, val);
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var row = AspectRows.ElementAtOrDefault(AspectIndex);
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if (row is not null)
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{
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row.Value = val;
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row.UpdateLabel();
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}
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CurrentValueLabel = RatingLabel(val);
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}
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public void SelectAspect(int index)
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{
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if (index < 0 || index >= _aspects.Count) return;
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AspectIndex = index;
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UpdateCurrentAspect();
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}
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public void NextAspect()
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{
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AspectIndex = (AspectIndex + 1) % _aspects.Count;
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UpdateCurrentAspect();
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}
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public void NextStudent()
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{
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if (StudentIndex >= _rows.Count - 1) return;
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AspectIndex = 0;
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ShowStudent(StudentIndex + 1);
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}
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public void PreviousStudent()
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{
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if (StudentIndex <= 0) return;
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AspectIndex = 0;
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ShowStudent(StudentIndex - 1);
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}
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public bool IsLastStudent => StudentIndex >= _rows.Count - 1;
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private RatingCell? GetCurrentCell()
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{
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if (_rows.Count == 0 || !_aspects.Any()) return null;
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var key = _aspects[Math.Clamp(AspectIndex, 0, _aspects.Count - 1)].Key;
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return _rows[StudentIndex].Cells.FirstOrDefault(c => c.AspectKey == key);
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}
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private static string RatingLabel(int? v) => v switch
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{
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2 => "++", 1 => "+", 0 => "~", -1 => "−", -2 => "−−", _ => "",
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};
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}
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public partial class QuickAspectRow : ObservableObject
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{
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public int Index { get; }
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public string Label { get; }
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[ObservableProperty] private bool _isActive;
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[ObservableProperty] private string _displayLabel = "";
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public int? Value { get; set; }
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public QuickAspectRow(int index, string label, int? value, bool isActive)
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{
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Index = index;
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Label = label;
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Value = value;
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IsActive = isActive;
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UpdateLabel();
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}
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public void UpdateLabel() => DisplayLabel = Value switch
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{
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2 => "++", 1 => "+", 0 => "~", -1 => "−", -2 => "−−", _ => "·",
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};
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}
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