using Avalonia.Controls;
using Avalonia.Input;
using DodoSSH.Client.App.Views;
using DodoSSH.Client.Session;
using DodoSSH.Client.Session.Tests;
using DodoSSH.Client.Shell.ViewModels;
using DodoSSH.Client.Storage;

namespace DodoSSH.Client.App.Layout.Tests;

/// <summary>
/// The keyboard on the cards a closed vault shows: where it is when the card appears, and what Enter does.
/// </summary>
/// <remarks>
/// <para>
/// Launch used to leave the keyboard nowhere. Focus only moved on the way out of an unlocked vault, so the
/// passphrase somebody started typing the moment the window appeared went nowhere until they clicked the box,
/// and Enter in the server address did nothing at all.
/// </para>
/// <para>
/// The whole window, shown the way <see cref="WholeWindow"/> describes.
/// </para>
/// </remarks>
public sealed class ClosedVaultFocusTests
{
    private static CancellationToken Token => TestContext.Current.CancellationToken;

    [Fact]
    public async Task AFreshMachine_PutsTheKeyboardInTheServerAddressAndEnterSignsIn()
    {
        using var caches = ClientCacheFactory.ForMemory($"focus-{Guid.CreateVersion7():N}");
        await caches.MigrateAsync(Token);

        await using var workspace = WholeWindow.Workspace();
        await using var shell = WholeWindow.Shell(caches, workspace);

        await shell.StartAsync(Token);
        shell.State.ShouldBe(ShellState.NeedsServer);

        await LayoutHarness.OnTheUiThreadAsync(
            () => WholeWindow.Show(shell, window =>
            {
                var box = window.FindControl<TextBox>("ServerUrlBox").ShouldNotBeNull();

                window.FocusManager!.GetFocusedElement().ShouldBeSameAs(box);

                box.KeyBindings.ShouldContain(binding =>
                    binding.Gesture == new KeyGesture(Key.Enter) && binding.Command == shell.SignInCommand);
            }),
            Token);
    }

    [Fact]
    public async Task AnEnrolledMachine_PutsTheKeyboardInThePassphraseBox()
    {
        using var caches = ClientCacheFactory.ForMemory($"focus-{Guid.CreateVersion7():N}");
        await caches.MigrateAsync(Token);

        await new AccountProvisioner(new FakeAccountServer(), new StubKeyBinding(), caches, TimeProvider.System, WholeWindow.CheapProfile)
            .EnrollAsync("https://dodossh.example", WholeWindow.Passphrase, "laptop", "Personal", Token);

        await using var workspace = WholeWindow.Workspace();
        await using var shell = WholeWindow.Shell(caches, workspace);

        await shell.StartAsync(Token);
        shell.State.ShouldBe(ShellState.Locked);

        await LayoutHarness.OnTheUiThreadAsync(
            () => WholeWindow.Show(shell, window =>
                window.FocusManager!.GetFocusedElement()
                    .ShouldBeSameAs(window.FindControl<UnlockCard>("UnlockPane").ShouldNotBeNull().PassphraseBox)),
            Token);
    }
}