using Avalonia.Controls;
using LehrerApp.Desktop.ViewModels.Groups;
using Microsoft.Extensions.DependencyInjection;

namespace LehrerApp.Desktop.Views.Groups;

public partial class GroupListView : UserControl
{
    public GroupListView() => InitializeComponent();

    protected override void OnDataContextChanged(EventArgs e)
    {
        base.OnDataContextChanged(e);
        if (DataContext is GroupListViewModel vm)
        {
            vm.OnAddGroup = ShowAddGroupDialog;
            vm.OnEditGroup = ShowEditGroupDialog;
            vm.OnConfirmDelete = ShowDeleteGroupDialog;
        }
    }

    private async Task ShowAddGroupDialog()
    {
        var dialogVm = App.Services.GetRequiredService<AddGroupDialogViewModel>();
        var dialog   = new AddGroupDialog { DataContext = dialogVm };
        var owner    = TopLevel.GetTopLevel(this) as Window;
        if (owner is not null)
            await dialog.ShowDialog(owner);
    }

    private async Task ShowEditGroupDialog(Guid groupId)
    {
        var group = App.Services.GetRequiredService<LehrerApp.Core.Interfaces.IGroupRepository>()
            .GetById(groupId);
        if (group is null) return;

        var dialogVm = App.Services.GetRequiredService<AddGroupDialogViewModel>();
        dialogVm.LoadForEdit(group);
        var dialog = new AddGroupDialog { DataContext = dialogVm };
        var owner = TopLevel.GetTopLevel(this) as Window;
        if (owner is not null)
            await dialog.ShowDialog<bool>(owner);
    }

    private async Task<bool> ShowDeleteGroupDialog(GroupListItem group)
    {
        var dialog = new DeleteGroupDialog { DataContext = group.DisplayName };
        var owner = TopLevel.GetTopLevel(this) as Window;
        return owner is not null && await dialog.ShowDialog<bool>(owner);
    }
}