using LehrerApp.Core.Models;
using LehrerApp.Desktop.ViewModels.Groups;
using Xunit;

namespace LehrerApp.Desktop.Tests;

public sealed class QuickInputViewModelTests
{
    [Fact]
    public void ZurueckZuVorherigemSchueler_ZeigtBereitsGesetzteBewertung()
    {
        var aspects = new List<AspectColumnDef>
        {
            new(new ParticipationAspect { Key = "mitarbeit", Label = "Mitarbeit" }),
        };
        var rows = new List<ParticipationStudentRow>
        {
            new(Guid.NewGuid(), "Anna", new ParticipationEntry(), aspects, []),
            new(Guid.NewGuid(), "Ben", new ParticipationEntry(), aspects, []),
        };
        var vm = new QuickInputViewModel(rows, aspects);

        vm.SetRatingByNumber(4); // Scale5, 4. Stufe -> Rohwert 1 ("+"), Anna bewerten
        vm.NextStudent();        // zu Ben
        vm.PreviousStudent();    // zurück zu Anna

        Assert.Equal(1, vm.AspectRows[0].Value);
    }

    [Fact]
    public void AnwesenderSchueler_CurrentStudentIsAbsent_IstFalse()
    {
        var aspects = new List<AspectColumnDef>
        {
            new(new ParticipationAspect { Key = "a", Label = "A" }),
        };
        var rows = new List<ParticipationStudentRow>
        {
            new(Guid.NewGuid(), "Anna", new ParticipationEntry { Attendance = AttendanceStatus.Present }, aspects, []),
        };
        var vm = new QuickInputViewModel(rows, aspects);

        Assert.False(vm.CurrentStudentIsAbsent);
        Assert.Equal(1.0, vm.CurrentStudentContentOpacity);
    }

    [Fact]
    public void AbwesenderSchueler_CurrentStudentIsAbsent_IstTrueUndGedimmt()
    {
        var aspects = new List<AspectColumnDef>
        {
            new(new ParticipationAspect { Key = "a", Label = "A" }),
        };
        var rows = new List<ParticipationStudentRow>
        {
            new(Guid.NewGuid(), "Anna", new ParticipationEntry(), aspects, []),
            new(Guid.NewGuid(), "Ben", new ParticipationEntry { Attendance = AttendanceStatus.Unexcused }, aspects, []),
        };
        var vm = new QuickInputViewModel(rows, aspects);

        vm.NextStudent(); // zu Ben, unentschuldigt abwesend

        Assert.True(vm.CurrentStudentIsAbsent);
        Assert.Equal("Krank, unentschuldigt", vm.CurrentStudentAttendanceLabel);
        Assert.Equal(0.4, vm.CurrentStudentContentOpacity);
    }

    [Fact]
    public void VorherigerAspekt_SpringtRueckwaertsMitUmlauf()
    {
        var aspects = new List<AspectColumnDef>
        {
            new(new ParticipationAspect { Key = "a", Label = "A" }),
            new(new ParticipationAspect { Key = "b", Label = "B" }),
        };
        var rows = new List<ParticipationStudentRow>
        {
            new(Guid.NewGuid(), "Anna", new ParticipationEntry(), aspects, []),
        };
        var vm = new QuickInputViewModel(rows, aspects);

        vm.PreviousAspect(); // von Index 0 rückwärts -> letzter Aspekt (Umlauf)

        Assert.Equal(1, vm.AspectIndex);
    }
}