using Avalonia.Controls;
using Avalonia.Markup.Xaml;
using Lagerprogramm.ViewModels;
using Avalonia;
using System.Linq;
using System.Threading.Tasks;

namespace Lagerprogramm.Views;

public partial class PartsView : UserControl
{
    public PartsView()
    {
        InitializeComponent();
    }

    private PartsViewModel? ViewModel => DataContext as PartsViewModel;

    private async void OnSearchPart(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        if (ViewModel is null) return;
        var window = TopLevel.GetTopLevel(this) as Window;
        if (window is null) return;
        var dialog = new PartSearchDialog();
        var selectedPart = await dialog.ShowPartSearch(ViewModel.Parts, window);
        if (selectedPart is not null)
        {
            var existingPart = ViewModel.Parts.FirstOrDefault(p => p.InternalPartNumber == selectedPart.InternalPartNumber);
            if (existingPart is not null)
                ViewModel.SelectedPart = existingPart;
        }
    }

    private async void OnSavePart(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        if (ViewModel is null || !ViewModel.CanSave) return;

        var existing = ViewModel.Parts.FirstOrDefault(p => p.InternalPartNumber == ViewModel.InternalPartNumber);
        if (existing is not null)
        {
            var window = TopLevel.GetTopLevel(this) as Window;
            if (window is null) return;
            var confirmed = await ConfirmDialog.Show(window, $"Part '{ViewModel.InternalPartNumber}' already exists. Overwrite?");
            if (!confirmed) return;
        }

        ViewModel.SaveCommand.Execute(null);
    }

    private void OnNewPart(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        if (ViewModel is null) return;
        ViewModel.NewPartCommand.Execute(null);
    }

    private async void OnDeletePart(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        if (ViewModel is null || ViewModel.SelectedPart is null) return;
        var window = TopLevel.GetTopLevel(this) as Window;
        if (window is null) return;

        var confirmed = await ConfirmDialog.Show(window, $"Delete part '{ViewModel.SelectedPart.InternalPartNumber}' permanently?");
        if (confirmed)
        {
            ViewModel.DeletePartCommand.Execute(null);
        }
    }
}