/// <summary>
/// Initialize instance.
/// </summary>
/// <param name="navigationService"></param>
/// <param name="editExpense"></param>
public AddExpensePageViewModel(INavigationService navigationService, IEditExpense editExpense)
{
_navigationService = navigationService;
_editExpense = editExpense;
_editExpense.AddTo(Disposable);
Amount = _editExpense.ToReactivePropertyAsSynchronized(x => x.Amount).AddTo(Disposable);
Date = _editExpense.ToReactivePropertyAsSynchronized(x => x.Date).AddTo(Disposable);
Location = _editExpense.ToReactivePropertyAsSynchronized(x => x.Location).AddTo(Disposable);
Note = _editExpense.ToReactivePropertyAsSynchronized(x => x.Note).AddTo(Disposable);
// Convert, because picker supports only string.
Categories = _editExpense.ObserveProperty(x => x.Categories)
.Where(x => x != null)
.Select(x => x.OrderBy(category => category.SortOrder).Select(category => category.Name))
.ToReadOnlyReactiveProperty().AddTo(Disposable);
// Convert, because picker supports only string.
SelectedCategoryIndex = _editExpense.ObserveProperty(x => x.SelectedCategory)
.Select(x =>
{
if (x == null)
{
return(-1);
}
else
{
// Elements obtained from Azure's IEnumerable return different instances each time.
// For this reason we compare by ID.
foreach (var item in _editExpense.Categories.Select((value, index) => new { value, index }))
{
if (item.value.Id == x.Id)
{
return(item.index);
}
}
return(-1);
}
})
.ToReactiveProperty().AddTo(Disposable);
// When you select into the Category name.
SelectedCategoryIndex.Subscribe(x =>
{
if (0 <= x)
{
_editExpense.SelectedCategory = _editExpense.Categories.ToList()[x];
}
});
SaveAsyncCommand =
Location.Select(x => !string.IsNullOrWhiteSpace(x))
.ToAsyncReactiveCommand().AddTo(Disposable);
SaveAsyncCommand.Subscribe(SaveAsync);
NavigateReceiptPageCommand = new ReactiveCommand();
NavigateReceiptPageCommand.Subscribe(_ => _navigationService.NavigateAsync("ReceiptPage"));
}
public ExpenseController(
IAddExpense addExpense,
IGetExpensesByPage getExpensesByPage,
IGetExpenseById getExpenseById,
IEditExpense editExpense
)
{
this.addExpense = addExpense;
this.getExpensesByPage = getExpensesByPage;
this.getExpenseById = getExpenseById;
this.editExpense = editExpense;
}
/// <summary>
/// Initialize Instance.
/// </summary>
/// <param name="editExpense"></param>
public ReceiptPageViewModel(IEditExpense editExpense)
{
_editExpense = editExpense;
Receipt = _editExpense.ObserveProperty(x => x.Receipt)
.Where(x => x != null)
.Select(x => ImageSource.FromStream(x.GetStream))
.ToReadOnlyReactiveProperty().AddTo(Disposable);
PickPhotoAsyncCommand = _editExpense.ObserveProperty(m => m.IsPickPhotoSupported).ToAsyncReactiveCommand().AddTo(Disposable);
PickPhotoAsyncCommand.Subscribe(async _ => await _editExpense.PickPhotoAsync());
TakePhotoAsyncCommand = _editExpense.ObserveProperty(m => m.IsTakePhotoSupported).ToAsyncReactiveCommand().AddTo(Disposable);
TakePhotoAsyncCommand.Subscribe(async _ => await _editExpense.TakePhotoAsync());
}