using Avalonia.Controls;
using LehrerApp.Core.Interfaces;
using LehrerApp.Core.Models;
using LehrerApp.Desktop.ViewModels.Workload;
using Microsoft.Extensions.DependencyInjection;

namespace LehrerApp.Desktop.Views.Workload;

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

    protected override void OnDataContextChanged(EventArgs e)
    {
        base.OnDataContextChanged(e);
        if (DataContext is TimeTrackingViewModel vm)
        {
            vm.OnAddEntry = () => ShowAddEntryDialog();
            vm.OnSuggestTeachingTime = (start, end) => ShowAddEntryDialog(prefillCategory: "Unterricht",
                prefillStart: start, prefillEnd: end);
        }
    }

    private async Task<TimeEntry?> ShowAddEntryDialog(string? prefillCategory = null,
        TimeOnly? prefillStart = null, TimeOnly? prefillEnd = null)
    {
        var owner = TopLevel.GetTopLevel(this) as Window;
        if (owner is null) return null;

        var tasks = App.Services.GetRequiredService<IWorkTaskRepository>()
            .GetAll().Where(t => t.Status != WorkTaskStatus.Done).ToList();
        var vm = new AddTimeEntryDialogViewModel(tasks);
        if (prefillCategory is not null) vm.SelectedCategory = prefillCategory;
        if (prefillStart is { } s) vm.StartTimeText = s.ToString("HH:mm");
        if (prefillEnd is { } e) vm.EndTimeText = e.ToString("HH:mm");
        var dialog = new AddTimeEntryDialog { DataContext = vm };
        await dialog.ShowDialog<bool>(owner);
        return vm.Result;
    }
}