using Xunit;

namespace LehrerApp.Api.Tests;

public sealed class UserStoreTests
{
    [Fact]
    public void CreateUser_NeuerNutzername_GibtTrueZurueckUndKannSichAnmelden()
    {
        using var temp = new TempUserStore();

        var created = temp.Store.CreateUser("sebastian", "einSicheresPasswort");

        Assert.True(created);
        Assert.True(temp.Store.VerifyPassword("sebastian", "einSicheresPasswort"));
    }

    [Fact]
    public void CreateUser_BereitsVorhandenerNutzername_GibtFalseZurueck()
    {
        using var temp = new TempUserStore();
        temp.Store.CreateUser("sebastian", "einSicheresPasswort");

        var created = temp.Store.CreateUser("sebastian", "einAnderesPasswort");

        Assert.False(created);
    }

    [Fact]
    public void VerifyPassword_FalschesPasswort_GibtFalseZurueck()
    {
        using var temp = new TempUserStore();
        temp.Store.CreateUser("sebastian", "einSicheresPasswort");

        Assert.False(temp.Store.VerifyPassword("sebastian", "falschesPasswort"));
    }

    [Fact]
    public void VerifyPassword_UnbekannterNutzer_GibtFalseZurueck()
    {
        using var temp = new TempUserStore();

        Assert.False(temp.Store.VerifyPassword("unbekannt", "irgendwas"));
    }

    private sealed class TempUserStore : IDisposable
    {
        private readonly string _directory = Path.Combine(
            Path.GetTempPath(), $"lehrerapp-api-tests-{Guid.NewGuid():N}");
        public UserStore Store { get; }

        public TempUserStore()
        {
            Directory.CreateDirectory(_directory);
            Store = new UserStore(_directory);
        }

        public void Dispose()
        {
            Store.Dispose();
            if (Directory.Exists(_directory)) Directory.Delete(_directory, recursive: true);
        }
    }
}