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

namespace LehrerApp.Desktop.Tests;

/// Tests für 3.1.3: RatingCell muss je AspectValueType unterschiedliche gültige Rohwerte und
/// Schrittweiten für Hoch/Runter (Raster) durchsetzen, nicht mehr pauschal -2..+2 wie zuvor.
public sealed class RatingCellTests
{
    [Fact]
    public void CycleUp_Scale3_SpringtZwischenDenDreiStufen()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", null, AspectValueType.Scale3);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(-2, cell.Value);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(0, cell.Value);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(2, cell.Value);

        cell.CycleUpCommand.Execute(null); // bleibt am oberen Ende
        Assert.Equal(2, cell.Value);
    }

    [Fact]
    public void CycleUp_Binary_ToggeltNurZwischenDenBeidenExtremwerten()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", null, AspectValueType.Binary);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(-2, cell.Value);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(2, cell.Value);
    }

    [Fact]
    public void SetValue_Points_KapptAufMaxPoints()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", null, AspectValueType.Points, maxPoints: 4);

        cell.SetValue(99);

        Assert.Equal(4, cell.Value);
    }

    [Fact]
    public void CycleUp_Points_ZaehltEinzelnHochBisMaxPoints()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", 3, AspectValueType.Points, maxPoints: 4);

        cell.CycleUpCommand.Execute(null);
        Assert.Equal(4, cell.Value);

        cell.CycleUpCommand.Execute(null); // bleibt am Maximum
        Assert.Equal(4, cell.Value);
    }

    [Fact]
    public void CycleDown_Points_ZaehltEinzelnRunterBisNull()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", 1, AspectValueType.Points, maxPoints: 4);

        cell.CycleDownCommand.Execute(null);
        Assert.Equal(0, cell.Value);

        cell.CycleDownCommand.Execute(null); // bleibt bei 0
        Assert.Equal(0, cell.Value);
    }

    [Fact]
    public void DisplayLabel_Scale5_UnveraendertGegenueberBisherigemVerhalten()
    {
        var cell = new RatingCell(Guid.NewGuid(), "k", 2);
        Assert.Equal("++", cell.DisplayLabel);
    }
}