using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;

using DodoSSH.Client.Shell.ViewModels;

namespace DodoSSH.Client.Android.Views;

/// <summary>Design 04 — everything in the vault that is not a host.</summary>
internal sealed partial class KeychainScreen : UserControl
{
    public KeychainScreen() => AvaloniaXamlLoader.Load(this);

    /// <summary>
    /// Cancels whichever of the keychain's five editors is open.
    /// </summary>
    /// <returns>Whether one was, and so whether there was anything to cancel.</returns>
    /// <remarks>
    /// One place for the question the editor page's ← and the system back gesture both ask. Only one editor is
    /// ever open — each one's command refuses while another is — so the order only decides which test runs
    /// first. Cancelling rather than hiding, as the host editor does, because cancelling is what empties the
    /// boxes, and two of them hold a private key and a password.
    /// </remarks>
    internal static bool TryCancelAnEditor(VaultViewModel vault)
    {
        if (vault.IsGeneratingKey)
        {
            vault.CancelGenerateKeyCommand.Execute(null);
        }
        else if (vault.IsEditingKey)
        {
            vault.CancelKeyEditCommand.Execute(null);
        }
        else if (vault.IsEditingCredential)
        {
            vault.CancelCredentialEditCommand.Execute(null);
        }
        else if (vault.IsEditingObjectStore)
        {
            vault.CancelObjectStoreEditCommand.Execute(null);
        }
        else if (vault.IsEditingTag)
        {
            vault.CancelTagEditCommand.Execute(null);
        }
        else
        {
            return false;
        }

        return true;
    }

    private void OnCancelEditor(object? sender, RoutedEventArgs e)
    {
        if (DataContext is VaultViewModel vault)
        {
            TryCancelAnEditor(vault);
        }
    }

    /// <summary>A kind was chosen on the add sheet: the sheet goes down as its editor opens.</summary>
    private void OnAddChosen(object? sender, RoutedEventArgs e)
    {
        if (DataContext is VaultViewModel vault)
        {
            vault.IsKeychainAddSheetOpen = false;
        }
    }
}