using Avalonia.Controls;
using LehrerApp.Core.Interfaces;
using LehrerApp.Core.Models;
using LehrerApp.Desktop.ViewModels.Students;
using LehrerApp.Desktop.Views.Students;
using LehrerApp.Templating;
using Microsoft.Extensions.DependencyInjection;

namespace LehrerApp.Desktop.Services;

/// <summary>Öffnet den bestehenden Elternbrief-Dialog für einen Schüler, egal ob der Aufruf aus
/// der Schülerdetailansicht (Student schon im DataContext) oder aus dem Formulare-Menü (Student
/// erst per Picker gewählt) kommt.</summary>
public static class LetterDialogs
{
    public static async Task ShowCreateLetterDialogAsync(Window owner, Student student)
    {
        var vm = new CreateLetterDialogViewModel(student,
            App.Services.GetRequiredService<TemplateStore>(),
            App.Services.GetRequiredService<ITemplateRenderer>(),
            App.Services.GetRequiredService<IGroupMembershipRepository>(),
            App.Services.GetRequiredService<IGroupRepository>(),
            options => App.Services.GetRequiredService<StudentAttendanceCalendarService>().Build(student, options),
            options => App.Services.GetRequiredService<StudentAttendanceCalendarService>()
                .BuildAbsenceDayList(student, options));
        var dialog = new CreateLetterDialog { DataContext = vm };
        var path = await dialog.ShowDialog<string?>(owner);
        if (!string.IsNullOrEmpty(path) && File.Exists(path))
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(path) { UseShellExecute = true });
    }
}