using CommunityToolkit.Mvvm.ComponentModel;
using LehrerApp.Desktop.Services;

namespace LehrerApp.Desktop.ViewModels.Students;

public partial class SelectContactDialogViewModel : ObservableObject
{
    [ObservableProperty] private LetterContactChoice? _selectedContact;

    public IReadOnlyList<LetterContactChoice> Contacts { get; }
    public string AddressPreview => LetterPlaceholderBuilder.FormatAddress(SelectedContact?.Model);
    public bool HasAddressPreview => !string.IsNullOrWhiteSpace(AddressPreview);

    public SelectContactDialogViewModel(IReadOnlyList<LetterContactChoice> contacts, LetterContactChoice? current)
    {
        Contacts = contacts;
        SelectedContact = current ?? contacts.FirstOrDefault();
    }

    partial void OnSelectedContactChanged(LetterContactChoice? value)
    {
        OnPropertyChanged(nameof(AddressPreview));
        OnPropertyChanged(nameof(HasAddressPreview));
    }
}