// Creating JSON object to represent new item, and then sending it to backend to be inserted into database table
public async void OnAdd(object sender, EventArgs e)
{
string sid = await App.Authenticator.GetUserId();
// Checking that user has filled in all required fields
if (string.IsNullOrEmpty(newItemName.Text) || newItemCategory.SelectedIndex.Equals(-1) || string.IsNullOrEmpty(newItemDescription.Text) || string.IsNullOrEmpty(newItemLendDuration.Text) || string.IsNullOrEmpty(newItemLocation.Text))
{
await DisplayAlert("Error", "All fields must be completed", "Ok");
}
else
{
var location = newItemLocation.Text;
var latitude = await getLatitudeFromLocation(location);
var longitude = await getLongitudeFromLocation(location);
int duration;
if (int.TryParse(newItemLendDuration.Text, out duration) && duration > 0)
{
buttonsPanel.IsVisible = false;
using (var scope = new ActivityIndicatorScope(syncIndicator, true))
{
var boardgames = new Boardgames {
Name = newItemName.Text, Description = newItemDescription.Text, Lend_duration = Int32.Parse(newItemLendDuration.Text), Location = location, Latitude = latitude, Longitude = longitude, Owner = sid, Borrowed = false, Category = newItemCategory.Items[newItemCategory.SelectedIndex]
};
await AddItem(boardgames);
//Add item photo to storage account
if (itemImageFile != null)
{
var boardGamesTable = await manager.GetBoardgamesAsync();
var itemId = boardGamesTable.Where(b => (String.Equals(b.Owner, sid)))
.OrderByDescending(b => b.CreatedAt)
.Select(b => b.Id)
.ElementAt(0);
var itemName = await ImageManager.GenerateItemPhotoName(itemId);
await ImageManager.UploadImage(itemImageFile.GetStream(), itemName);
itemImageFile.Dispose();
itemImageFile = null;
}
}
buttonsPanel.IsVisible = true;
await DisplayAlert("Success", "Your item has been added", "Ok");
// Empty all fields after item has been successfully added
newItemName.Text = string.Empty;
newItemDescription.Text = descriptionPlaceholder;
newItemDescription.TextColor = Color.Gray;
newItemLendDuration.Text = string.Empty;
newItemLocation.Text = string.Empty;
newItemCategory.SelectedIndex = -1;
newItemName.Unfocus();
itemImage.Source = null;
}
else
{
await DisplayAlert("Error", "Number of days must be a positive whole number", "Ok");
}
}
}