using Avalonia.Controls;
using Avalonia.Interactivity;
using LehrerApp.Core.Models;
using LehrerApp.Desktop.ViewModels.Groups;
using LehrerApp.Desktop.ViewModels.Planning;
using LehrerApp.Desktop.Views.Groups;
using Microsoft.Extensions.DependencyInjection;

namespace LehrerApp.Desktop.Views.Planning;

public partial class WebUntisTimetableImportDialog : Window
{
    public WebUntisTimetableImportDialog() => InitializeComponent();

    private void OnCancel(object? sender, RoutedEventArgs e) => Close(false);
    private void OnSave(object? sender, RoutedEventArgs e)
    {
        if (DataContext is WebUntisTimetableImportViewModel { Saved: true }) Close(true);
    }

    public async Task<LearningGroup?> CreateGroupAsync(WebUntisTimetableRow source)
    {
        var vm = App.Services.GetRequiredService<AddGroupDialogViewModel>();
        vm.Name = source.SuggestedGroupName;
        vm.Subject = source.SubjectName ?? "";
        vm.GradeLevel = ParseGrade(source.SuggestedGroupName) ?? 10;
        var dialog = new AddGroupDialog { DataContext = vm };
        return await dialog.ShowDialog<bool>(this) ? vm.Result : null;
    }

    private static int? ParseGrade(string value)
    {
        var digits = new string(value.TakeWhile(char.IsDigit).ToArray());
        return int.TryParse(digits, out var grade) && grade is >= 1 and <= 13 ? grade : null;
    }
}