public async Task TestGradeParsing()
{
var client = ClientTests.Client();
await client.Authenticate("xxx", "xxx");
var parser = new GradingParser(client);
var g = await parser.GetGradesForAllDegrees();
Assert.IsNotEmpty(g);
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
Task <bool> loginTask;
if (!string.IsNullOrEmpty(_config.LoginCookie))
{
_logger.LogInformation("Logging in with login cookie");
loginTask = _httpClient.Authenticate(_config.LoginCookie);
}
else if (!string.IsNullOrEmpty(GetPassword()) && !string.IsNullOrEmpty(GetUserName()))
{
_logger.LogInformation("Logging in with username and password");
loginTask = _httpClient.Authenticate(GetUserName(), GetPassword());
}
else
{
await HandleError("No authentication provided!");
return;
}
if (!await loginTask)
{
await HandleError("Authentication for fetching grades failed!");
return;
}
_logger.LogDebug("Execution started");
_logger.LogInformation($"Storing and saving results to {SaveFilePath}");
var parser = new GradingParser(_httpClient);
var degrees = LoadFromFile().ToArray();
while (!stoppingToken.IsCancellationRequested)
{
try
{
var task = UpdateExamResults(parser, degrees);
task.Wait(stoppingToken);
degrees = task.Result.ToArray();
SaveToFile(degrees);
}
catch (Exception e)
{
await HandleError(e);
}
await Task.Delay(15 * 60 * 1000, stoppingToken);
}
}
private async Task <IEnumerable <ExamResultChangeTracking> > UpdateExamResults(GradingParser parser,
IEnumerable <ExamResultChangeTracking> previousExamResults)
{
var currentDegrees = await parser.GetGradesForAllDegrees();
var previousExamResultsArr =
previousExamResults as ExamResultChangeTracking[] ?? previousExamResults.ToArray();
var changes = GetChangedExams(previousExamResultsArr, currentDegrees.SelectMany(ToExamResultChangeTracking))
.ToArray();
if (changes.Length > 0)
{
_logger.LogInformation($"Found {changes.Length} changes in exam results.");
await Notify(changes);
}
else
{
_logger.LogDebug("Found no new exams");
}
return(changes.Union(previousExamResultsArr, new GenericEqualityComparer <ExamResultChangeTracking>((a, b) =>
a.ExamResult.ExamNumber == b.ExamResult.ExamNumber && a.ExamResult.Try == b.ExamResult.Try &&
a.ExamResult.ExamState == b.ExamResult.ExamState &&
(float.IsNaN(a.ExamResult.Grade) && float.IsNaN(b.ExamResult.Grade) ||
Math.Abs(a.ExamResult.Grade - b.ExamResult.Grade) < .001))));
}
