public async Task <GalacticStandings> GetData(CancellationTokenSource cancelToken, bool ignoreCache = false)
{
TimeSpan expiry = TimeSpan.FromMinutes(15);
if ((galacticStandings == null) || (galacticStandings.Cycle != CycleService.CurrentCycle() && (lastUpdated + expiry < DateTime.Now)))
{
// download the standings
string json;
DownloadService downloadService = DownloadService.Instance();
(json, lastUpdated) = await downloadService.GetData(URL, dataKey, lastUpdatedKey, expiry, cancelToken, ignoreCache).ConfigureAwait(false);
// parse the standings
galacticStandings = JsonConvert.DeserializeObject <GalacticStandings>(json);
// cache till next cycle if updated
if (galacticStandings.Cycle == CycleService.CurrentCycle())
{
expiry = CycleService.TimeTillTick();
Barrel.Current.Add(dataKey, json, expiry);
Barrel.Current.Add(lastUpdatedKey, lastUpdated.ToString(), expiry);
}
}
return(galacticStandings);
}
private async void GetStandingsAsync(bool ignoreCache = false)
{
int cycleNo = 0;
if (!string.IsNullOrWhiteSpace(Cycle))
{
int p = Cycle.IndexOf(" ") + 1;
Int32.TryParse(Cycle.Substring(p, Cycle.Length - p), out cycleNo);
}
if ((Standings?.Any() == false) || (cycleNo != CycleService.CurrentCycle() && (LastUpdated + TimeSpan.FromMinutes(10) < DateTime.Now)))
{
ShowMessage = false;
CancellationTokenSource cancelToken = new CancellationTokenSource();
using (UserDialogs.Instance.Loading("Loading", () => cancelToken.Cancel(), null, true, MaskType.Clear))
{
try
{
// get the standings
StandingsService standingsService = StandingsService.Instance();
GalacticStandings standings = await standingsService.GetData(cancelToken, ignoreCache).ConfigureAwait(false);
Cycle = $"Cycle {standings.Cycle}";
LastUpdated = standings.LastUpdated;
if (standings.Standings.Count < 1)
{
SetMessages("Unable to display Powerplay Standings due to parsing error.", true);
}
else
{
// show the standings
Device.BeginInvokeOnMainThread(() =>
{
Standings.Clear();
foreach (PowerStanding item in standings.Standings)
{
Standings.Add(item);
}
});
}
}
catch (OperationCanceledException)
{
SetMessages("Powerplay Standings download was cancelled or timed out.", true);
}
catch (HttpRequestException ex)
{
string err = ex.Message;
int start = err.IndexOf("OPENSSL_internal:", StringComparison.OrdinalIgnoreCase);
if (start > 0)
{
start += 17;
int end = err.IndexOf(" ", start, StringComparison.OrdinalIgnoreCase);
err = $"SSL Error ({err.Substring(start, end - start).Trim()})";
}
else if (err.IndexOf("Error:", StringComparison.OrdinalIgnoreCase) > 0)
{
err = err.Substring(err.IndexOf("Error:", StringComparison.OrdinalIgnoreCase) + 6).Trim();
}
SetMessages($"Network Error: {err}", true);
}
catch (Exception ex)
{
if (ex.Message.Contains("unexpected end of stream"))
{
SetMessages("Powerplay Standings download was cancelled.", true);
}
else
{
SetMessages($"Error: {ex.Message}", true);
}
}
}
}
}
