//Retreive All QRCodes
public void GetQRCodes(QRCodeListCallback callback)
{
FirebaseDatabase.DefaultInstance.
GetReference(QRCODE_LIST)
.GetValueAsync().ContinueWith((task) =>
{
if (task.IsFaulted)
{
callback(null, "Could Not Load Enemy Locations");
}
else if (task.IsCompleted)
{
List <QRCode> codes = new List <QRCode>();
DataSnapshot snapshot = task.Result;
if (snapshot != null && snapshot.ChildrenCount > 0)
{
foreach (var childSnapshot in snapshot.Children)
{
string json = childSnapshot.GetRawJsonValue();
QRCode code = CreateQRCodeFromJSON(json);
code.QRCodeID = childSnapshot.Key;
codes.Add(code);
}
callback(codes, "Enemy Location Loaded");
}
else
{
callback(null, "Enemies Not Found");
}
}
});
}
//Retreive All QRCodes Within Latitudes
public void GetQRCodesWithinLatitudes(QRCodeListCallback callback, float start_lat, float end_lat)
{
FirebaseDatabase.DefaultInstance.
GetReference(QRCODE_LIST)
.OrderByChild(LATITUDE)
.StartAt(start_lat)
.EndAt(end_lat)
.GetValueAsync()
.ContinueWith((task) =>
{
if (task.IsFaulted)
{
callback(null, "Could Not Load : Locations");
}
else if (task.IsCompleted)
{
List <QRCode> codes = new List <QRCode>();
DataSnapshot snapshot = task.Result;
if (snapshot != null && snapshot.ChildrenCount > 0)
{
foreach (var childSnapshot in snapshot.Children)
{
string json = childSnapshot.GetRawJsonValue();
QRCode code = CreateQRCodeFromJSON(json);
code.QRCodeID = childSnapshot.Key;
codes.Add(code);
}
callback(codes, "Enemies Found Nearby");
}
else
{
callback(null, "No Enemies Nearby");
}
}
});
}
