/* class functions */
// gets data from db List<Dic<string, object>> and sets it to private variable
private async void SetData()
{
// dummy text for user
messageHeader.Text = "Loading messages, please wait!";
// change mouse cursor to load
Mouse.OverrideCursor = Cursors.Wait;
try
{
FirebaseHandler fbh = new FirebaseHandler();
CollectionHandler collectionHandler = new CollectionHandler();
this.data = await fbh.GetCollection(collectionHandler.GetMessageCollection());
//release mouse cursor to normal
Mouse.OverrideCursor = null;
if (this.data[0] != null)
{
// insert messages to "DOM" or ui
this.InsertToDom(this.data[0]);
}
}
catch (Exception e)
{
messageHeader.Text = "Error occured: " + e.Message;
}
}
// remove button
private async void RemoveMessage(object sender, RoutedEventArgs e)
{
MessageBoxResult wannaRemove = MessageBox.Show("Are you sure you want to remove?", "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (wannaRemove == MessageBoxResult.Yes)
{
// collection does get removed if empty, prevent that
if (this.data.Count > 1)
{
FirebaseHandler firebaseHandler = new FirebaseHandler();
CollectionHandler collectionH = new CollectionHandler();
string[] response = await firebaseHandler.DeleteFromDb(this.currentMessage, collectionH.GetMessageCollection());
if (response[0].Equals("200"))
{
int index = this.FindIndex(this.currentMessage);
try
{
this.data.RemoveAt(index);
this.InsertToDom(this.data[0]);
_ = MessageBox.Show("Document deleted!", "Information", MessageBoxButton.OK, MessageBoxImage.Information);
}
catch (Exception ed)
{
_ = MessageBox.Show(ed.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
//error from firebase
else
{
_ = MessageBox.Show(response[1], "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
// cannot remove only document
else
{
_ = MessageBox.Show("Nothing removed! Collection length must be at least one.", "Information", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
// cancelled remove
else
{
_ = MessageBox.Show("Nothing removed!", "Information", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
