public void InitUpdateData()
{
this.calcelationTokenSource = new CancellationTokenSource();
// Do nothing if updating currently
if (IsCurrentlyUpdating)
{
return;
}
// Set state
IsCurrentlyUpdating = true;
IsCurrentlyCanceling = false;
//Create background task
Task <LeagueInfo> t = new Task <LeagueInfo>((stateObj) =>
{
var castedToken = (CancellationToken)stateObj;
const int maxPerPage = 200;
LeagueInfo lf = new LeagueInfo();
//Get header data
HttpResponseMessage response = client.GetAsync(getFormatterUrl(0, maxPerPage)).Result;
if (response.IsSuccessStatusCode)
{
string jsonRawData = response.Content.ReadAsStringAsync().Result;
lf = JsonConvert.DeserializeObject <LeagueInfo>(jsonRawData);
}
else
{
//Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
throw new Exception();
}
// Get remaining data
for (int i = 200; i < lf.ladder.total; i += 200)
{
if (castedToken.IsCancellationRequested)
{
response.Dispose();
castedToken.ThrowIfCancellationRequested();
}
//Sleep if explicitly requested.
Thread.Sleep(PagingDelay);
/*//Add implicit delay every 5 pages to prevent some errors that sometimes occure due to too many requests.
* if (i > 0 && (Math.IEEERemainder(i/200, 5) == 0))
* {
* Console.WriteLine("Implicit Delay.");
* Thread.Sleep(3000);
* }*/
//Report progress trough event
UpdateProgressReport?.Invoke(i * 100 / lf.ladder.total);
// Get page data
response = client.GetAsync(getFormatterUrl(i, maxPerPage)).Result;
if (response.IsSuccessStatusCode)
{
string respon = response.Content.ReadAsStringAsync().Result;
LeagueInfo lfTemp = JsonConvert.DeserializeObject <LeagueInfo>(respon);
//append Entires (characters) to lf variable which holds all data.
lf.ladder.entries.AddRange(lfTemp.ladder.entries);
}
else
{
//Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
throw new Exception();
}
}
return(lf);
}, calcelationTokenSource.Token, calcelationTokenSource.Token);
//Start task in the background
t.Start();
// Execute after completion of the task
t.ContinueWith((task) => {
IsCurrentlyUpdating = false;
IsCurrentlyCanceling = false;
if (task.IsCanceled)
{
UpdateCancelled?.Invoke();
}
else if (!task.IsFaulted)
{
Lf = task.Result;
CompletedSuccessfully?.Invoke();
}
else
{
CompletionFailed?.Invoke();
}
});
}
public static CommandProgressReport AsCommandProgress(this UpdateProgressReport value)
=> new CommandProgressReport
{
Percentage = value.Percentage, ReportMessage = value.ReportMessage
};
