private async Task ShowItemsAsync()
{
List <ItemModel> items = new List <ItemModel>();
Category.Items = new ObservableCollection <ItemModel>();
if (SearchItem.ItemName != "")
{
items = await FirebaseService.GetItemsAsync(SearchItem, 20, null);
}
else if (VisibleState == States[0])
{
items = await FirebaseService.GetItemsAsync(Category, 20, null);
}
else
{
items = await FirebaseService.GetItemsAsync(VisibleState, 20, null);
}
foreach (var item in items)
{
var state = States.FirstOrDefault(x => x.StateID == item.StateID);
item.State = state;
}
Category.Items = new ObservableCollection <ItemModel>(items);
}
async Task ExecuteLoadStoriesCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Stories.Clear();
var stories = await FirebaseService.GetItemsAsync(true);
foreach (var story in stories)
{
Stories.Add(story);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
private async Task LoadMoreAsync()
{
if (!await CanLoadMoreAsync())
{
return;
}
IsItemsLoading = true;
if (SearchItem.ItemName != "")
{
var items = await FirebaseService.GetItemsAsync(SearchItem, 20, Category.Items.Last().ID);
for (int i = 0; i < items.Count; i++)
{
items[i].State = SelectableStates.FirstOrDefault(x => x.StateID == items[i].StateID);
Category.Items.Add(items[i]);
}
}
else if (VisibleState == States[0] && Category.Items.Count != 0)
{
var items = await FirebaseService.GetItemsAsync(Category, 20, Category.Items.Last().ID);
for (int i = 0; i < items.Count; i++)
{
items[i].State = SelectableStates.FirstOrDefault(x => x.StateID == items[i].StateID);
Category.Items.Add(items[i]);
}
}
else if (VisibleState.StateID != null)
{
var items = await FirebaseService.GetItemsAsync(VisibleState, 20, Category.Items.Last().ID);
for (int i = 0; i < items.Count; i++)
{
items[i].State = SelectableStates.FirstOrDefault(x => x.StateID == items[i].StateID);
Category.Items.Add(items[i]);
}
}
IsItemsLoading = false;
}