public ManageItem(ItemViewModel itemViewModel)
{
this.InitializeComponent();
this.tbTitle.Text = "Update Item";
InitializeFlyout();
this.itemViewModel = itemViewModel;
this.txtTitle.Text = itemViewModel.Title;
this.txtDescription.Text = itemViewModel.Description;
this.txtCost.Text = itemViewModel.Cost.ToString();
this.cboCategories.SelectedItem = cboCategories.Items[((int)itemViewModel.Category) - 2];
}
async private void btnSave_Click(object sender, RoutedEventArgs e)
{
try
{
this.txtStatusMessage.Visibility = Windows.UI.Xaml.Visibility.Visible;
this.txtStatusMessage.Text = "Please wait...";
if (AreFieldsValid())
{
if (this.itemViewModel == null)
{
ItemViewModel item = new ItemViewModel()
{
Identifier = -1,
Title = this.txtTitle.Text,
Description = this.txtDescription.Text,
Cost = Convert.ToInt64(this.txtCost.Text),
Trip = MainViewModel.GetSelectedTrip(),
User = MainViewModel.GetTraveler(),
Category = (short)((PairViewModel)cboCategories.SelectedItem).Identifier
};
item.Identifier = await MainViewModel.SaveItem(item);
this.txtStatusMessage.Text = "Trip has been created";
}
else
{
itemViewModel.Title = this.txtTitle.Text;
itemViewModel.Description = this.txtDescription.Text;
itemViewModel.Trip = MainViewModel.GetSelectedTrip();
itemViewModel.Trip.ItemsCost -= itemViewModel.Cost;
itemViewModel.Cost = Convert.ToInt64(this.txtCost.Text);
itemViewModel.User = MainViewModel.GetTraveler();
itemViewModel.Category = (short)((PairViewModel)cboCategories.SelectedItem).Identifier;
await MainViewModel.SaveItem(itemViewModel);
this.txtStatusMessage.Text = "Trip has been updated";
}
this.backButton_Click(sender, e);
}
}
catch (Exception)
{
this.txtStatusMessage.Text = "Something is wrong, please review the fields and try again";
}
}
async public static Task<int> SaveItem(ItemViewModel item)
{
if (item.Identifier == -1)
{
item.Identifier = await _model.SaveItemAsync(item);
item.Trip.DeleteFakeItem();
}
else
{
await _model.UpdateItem(item);
item.Group.Items.Remove(item);
if (item.Group.Items.Count == 0)
{
item.Trip.ItemGroups.Remove(item.Group);
}
}
item.Trip.ItemsCost += Convert.ToInt64(item.Cost);
CategoryViewModel category = item.Trip.CreateCategory((Category)item.Category);
item.Group = category;
category.Items.Add(item);
return item.Identifier;
}
private static void CreateFakeItem(ParentViewModel trip)
{
CategoryViewModel category = trip.CreateCategory(Category.Things);
if (category.Items.Count == 0)
{
ItemViewModel item = new ItemViewModel();
item.Identifier = -1;
item.Title = "Note";
item.Description = "Add items from the botton toolbar";
item.Group = category;
item.Trip = trip;
category.Items.Add(item);
}
}
async public Task UpdateItem(ItemViewModel itemViewModel)
{
SQLite.SQLiteAsyncConnection context = new SQLite.SQLiteAsyncConnection(connectionString);
List<ItemViewModel> result = new List<ItemViewModel>();
Item item = await context.Table<Item>().Where(p => p.Identifier == itemViewModel.Identifier).FirstOrDefaultAsync();
item.Title = itemViewModel.Title;
item.Description = itemViewModel.Description;
item.Cost = itemViewModel.Cost;
item.Category = itemViewModel.Category;
if (item != null)
{
await context.UpdateAsync(item);
}
}
async public Task<int> SaveItemAsync(ItemViewModel item)
{
SQLite.SQLiteAsyncConnection context = new SQLite.SQLiteAsyncConnection(connectionString);
Item newItem = new Item()
{
Identifier = item.Identifier,
Title = item.Title,
Description = item.Description,
Cost = item.Cost,
Latitude = item.Latitude,
Longitude = item.Longitude,
Parent = item.Trip.Identifier,
User = item.User.ToString(),
Category = item.Category
};
await context.InsertAsync(newItem);
return newItem.Identifier;
}