public async Task <NetworkStatus <List <CovidCountryViewModel> > > LoadCountryCovidCases()
{
_covidCountryData.Clear();
var result = new NetworkStatus <List <CovidCountryViewModel> >();
var pageSourceResult = await _httpClientMgr.GetAsync(_covidCasesNowUrl);
if (!pageSourceResult.Succeeded)
{
result.ErrorMessage = "Error loading content from " + _covidCasesNowUrl;
result.ErrorCode = pageSourceResult.ErrorCode;
return(result);
}
var parseSuccess = TryParseWorldometersSiteData(pageSourceResult.Result);
if (!parseSuccess)
{
result.ErrorMessage = "Error parsing content from " + _covidCasesNowUrl;
}
else
{
result.Result = new List <CovidCountryViewModel>();
foreach (var c in _covidCountryData)
{
result.Result.Add(CovidCountryViewModel.Create(c));
}
result.Succeeded = true;
}
return(result);
}
public async Task <NetworkStatus <string> > GetAsync(string url)
{
var result = new NetworkStatus <string>()
{
Succeeded = false
};
bool done = false;
int retryCounts = 0;
while (!done)
{
done = true;
try
{
var response = await Client.GetAsync(url).ConfigureAwait(false);
response.EnsureSuccessStatusCode();
result.Succeeded = true;
result.Result = await response.Content.ReadAsStringAsync();
}
catch (Exception ex)
{
result.ErrorCode = NetworkReturnUtils.ExceptionToReturnCode(ex);
result.ErrorMessage = ex.Message;
result.Ex = ex;
if (result.ErrorCode == NetworkErrorCode.NetworkTimeout)
{
retryCounts++;
if (retryCounts < _maxRetryIfNetworkTimeout)
{
done = false;
}
}
}
}
return(result);
}