using LehrerApp.Core.Models;
using LehrerApp.Data;
using LehrerApp.Data.Repositories;
using LehrerApp.Desktop.ViewModels.Settings;
using Xunit;

namespace LehrerApp.Desktop.Tests;

public sealed class TrashViewModelTests
{
    private static TrashViewModel BuildViewModel(LiteDbContext db) => new(
        new TrashRepository(db), new GradeRepository(db), new WorkTaskRepository(db),
        new TimeEntryRepository(db), new SeatingPlanRepository(db), new GradingKeyTemplateRepository(db));

    [Fact]
    public void Konstruktor_LaedtVorhandenePapierkorbEintraege()
    {
        using var db = new LiteDbContext(new MemoryStream());
        var taskRepo = new WorkTaskRepository(db);
        var task = new WorkTask { Title = "Elternbrief schreiben" };
        taskRepo.Save(task);
        taskRepo.Delete(task.Id);

        var vm = BuildViewModel(db);

        Assert.True(vm.HasItems);
        var item = Assert.Single(vm.Items);
        Assert.Equal("Aufgabe", item.TypeLabel);
        Assert.Equal("Elternbrief schreiben", item.Summary);
    }

    [Fact]
    public void LeererPapierkorb_HasItemsIstFalsch()
    {
        using var db = new LiteDbContext(new MemoryStream());

        var vm = BuildViewModel(db);

        Assert.False(vm.HasItems);
        Assert.Empty(vm.Items);
    }

    [Fact]
    public void RestoreCommand_StelltAufgabeWiederHerUndAktualisiertDieListe()
    {
        using var db = new LiteDbContext(new MemoryStream());
        var taskRepo = new WorkTaskRepository(db);
        var task = new WorkTask { Title = "Klausuren korrigieren" };
        taskRepo.Save(task);
        taskRepo.Delete(task.Id);
        var vm = BuildViewModel(db);
        var item = Assert.Single(vm.Items);

        vm.RestoreCommand.Execute(item);

        Assert.NotNull(db.Tasks.FindById(task.Id));
        Assert.False(vm.HasItems);
        Assert.Contains("Klausuren korrigieren", vm.Status);
    }

    [Fact]
    public void RestoreCommand_MitNullTutNichts()
    {
        using var db = new LiteDbContext(new MemoryStream());
        var vm = BuildViewModel(db);

        vm.RestoreCommand.Execute(null);

        Assert.Equal("", vm.Status);
    }

    [Theory]
    [InlineData(nameof(Grade), "Note")]
    [InlineData(nameof(WorkTask), "Aufgabe")]
    [InlineData(nameof(TimeEntry), "Zeiteintrag")]
    [InlineData(nameof(SeatingPlan), "Sitzplan")]
    [InlineData(nameof(GradingKeyTemplate), "Notenschlüssel-Vorlage")]
    public void TypeLabel_UebersetztDenEntityTypeInsDeutsche(string entityType, string expectedLabel)
    {
        using var db = new LiteDbContext(new MemoryStream());
        db.TrashedItems.Insert(new TrashedItem { EntityType = entityType, Summary = "Testeintrag" });

        var vm = BuildViewModel(db);

        var item = Assert.Single(vm.Items);
        Assert.Equal(expectedLabel, item.TypeLabel);
    }

    [Fact]
    public void TypeLabel_UnbekannterEntityTypeFaelltAufDenRohenNamenZurueck()
    {
        using var db = new LiteDbContext(new MemoryStream());
        db.TrashedItems.Insert(new TrashedItem { EntityType = "Sonstiges", Summary = "Testeintrag" });

        var vm = BuildViewModel(db);

        Assert.Equal("Sonstiges", Assert.Single(vm.Items).TypeLabel);
    }
}