public UrlMonitoringTask(string url)
{
Uri parsedUri = new Uri(url);
foreach (var scraper in Session.Current.AvailableScrapers)
{
Uri scraperUri = new Uri(scraper.WebsiteBaseUrl);
var result = Uri.Compare(parsedUri, scraperUri, UriComponents.Host, UriFormat.SafeUnescaped,
StringComparison.InvariantCultureIgnoreCase);
if (result != 0)
{
continue;
}
this._scraper = scraper;
this.Url = url;
try
{
this._oldDetails = _scraper.GetProductDetails(Url, this.TokenSource.Token);
}
catch (Exception e)
{
Logger.Instance.WriteErrorLog($"Error occured while obtaining product info. Please Try Again.. \n msg={e.Message}");
throw new Exception("Error occured while obtaining product info");
}
return;
}
throw new Exception("We don't support this website yet");
}
public void StartMonitoring()
{
Task.Factory.StartNew(() =>
{
while (!TokenSource.Token.IsCancellationRequested)
{
ProductDetails details = null;
try
{
details = _scraper.GetProductDetails(Url, TokenSource.Token);
}
catch (Exception e)
{
Logger.Instance.WriteErrorLog($"Error while monitoring url ({Url}) \n msg={e.Message}");
continue;
}
if (details.SizesList.Count > _oldDetails.SizesList.Count)
{
Logger.Instance.WriteVerboseLog("New Size was found in stock");
SendNotification(details, WebHooks);
}
else
{
Logger.Instance.WriteVerboseLog("Url monitoring epoch completed. No new sizes in stock");
}
_oldDetails = details;
Task.Delay(AppSettings.Default.MonitoringInterval, TokenSource.Token).Wait(TokenSource.Token);
}
}, TokenSource.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}
