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

namespace LehrerApp.Desktop.Tests;

public sealed class SeatingPlanViewModelTests
{
    [Fact]
    public void AuswahlEinesBereitsZugeordnetenSchuelers_VerschiebtIhnAufDenNeuenPlatz()
    {
        var groupId = Guid.NewGuid();
        var student = new Student { FirstName = "Anna", LastName = "Beispiel" };
        var students = new FakeStudents([student]);
        var memberships = new FakeMemberships([
            new GroupMembership { GroupId = groupId, StudentId = student.Id },
        ]);
        var plan = new SeatingPlan
        {
            GroupId = groupId,
            Name = "Standard",
            Rows = 1,
            Columns = 2,
            Assignments = [new SeatAssignment { Row = 0, Column = 0, StudentId = student.Id }],
        };
        var plans = new FakeSeatingPlans([plan]);
        var vm = new SeatingPlanTabViewModel(plans, students, memberships);
        vm.Initialize(groupId, isReadOnly: false);

        vm.Seats[1].SelectedOption = vm.StudentOptions.Single(o => o.StudentId == student.Id);

        Assert.Null(vm.Seats[0].SelectedOption.StudentId);
        var assignment = Assert.Single(plans.GetById(plan.Id)!.Assignments);
        Assert.Equal((0, 1, student.Id), (assignment.Row, assignment.Column, assignment.StudentId));
    }

    [Fact]
    public void ArchivierteGruppe_DeaktiviertSitzplatzbearbeitung()
    {
        var groupId = Guid.NewGuid();
        var plan = new SeatingPlan { GroupId = groupId, Name = "Standard", Rows = 1, Columns = 1 };
        var vm = new SeatingPlanTabViewModel(
            new FakeSeatingPlans([plan]), new FakeStudents([]), new FakeMemberships([]));

        vm.Initialize(groupId, isReadOnly: true);

        Assert.False(vm.IsEditable);
        Assert.False(vm.Seats.Single().CanEdit);
        Assert.False(vm.AddPlanCommand.CanExecute(null));
    }
}