private static Course ExtractCourse(Config config)
{
Course course = new Course();
Extractor.ExtractCourseStructure(out int videosCount);
using (pbarExtractor = new ProgressBar(videosCount, "Extracting Course Links - This will take some time", optionPbarExtractor))
{
Retry.Do(
function: () =>
{
Log.Information("Extracting...");
Extractor.ExtractionProgressChanged += Extractor_ExtractionProgressChanged;
course = Extractor.ExtractCourse(config.Quality);
},
exceptionMessage: "An error occured while extracting the course",
actionOnError: () =>
{
Extractor.CloseTabs();
var progress = pbarExtractor.AsProgress <float>();
progress?.Report(0);
Extractor.ExtractionProgressChanged -= Extractor_ExtractionProgressChanged;
},
actionOnFatal: () =>
{
TUI.ShowError("Failed to extract course. You can find more info in the logs");
Log.Error("Unknown error occured. Running app again");
TUI.ShowError("Unknown error occured");
TUI.ShowError("Restarting...");
Extractor.KillDrivers();
Extractor.ExtractionProgressChanged -= Extractor_ExtractionProgressChanged;
course = null;
}
);
}
return(course);
}
private Course ExtractCourse()
{
Course course = new Course();
UpdateUI(() => lblCurrentOperation.Text = "Logging in");
Browser browser = GetFromUI <Browser>(() => cmboxBrowser.SelectedIndex);
Log.Information("Logging in");
Extractor.InitializeDriver(browser);
try
{
Extractor.Login(txtToken.Text, txtCourseUrl.Text).Wait();
Log.Information("Logged in with course url : {0} and token of {1} characters", GetFromUI <string>(() => txtCourseUrl.Text), GetFromUI <int>(() => txtToken.Text.Length));
UpdateUI(() =>
{
lblCurrentOperation.Text = "Logged in successfully";
UC_IsLoggedin.IsLoggedin = true;
});
}
catch (InvalidTokenException ex)
{
MessageBox.Show("The token or the course url you provided is invalid.\nPlease make sure you entered the right token and course url", "Invalid Input", MessageBoxButtons.OK, MessageBoxIcon.Error);
UpdateUI(() =>
{
EnableControls(true);
lblCurrentOperation.Text = "Login Failed";
});
Log.Error(ex, "Failed to log in with course url : {0} and token of {1} characters", GetFromUI <string>(() => txtCourseUrl.Text), GetFromUI <int>(() => txtToken.Text.Length));
return(null);
}
catch (Exception e) when(e.InnerException is InvalidTokenException ex)
{
MessageBox.Show("The token or the course url you provided is invalid.\nPlease make sure you entered the right token and course url", "Invalid Input", MessageBoxButtons.OK, MessageBoxIcon.Error);
UpdateUI(() =>
{
EnableControls(true);
lblCurrentOperation.Text = "Login Failed";
});
Log.Error(ex, "Failed to log in with course url : {0} and token of {1} characters", GetFromUI <string>(() => txtCourseUrl.Text), GetFromUI <int>(() => txtToken.Text.Length));
return(null);
}
catch (Exception ex)
{
Log.Error(ex, "Unknown Exception");
throw ex;
}
UpdateUI(() =>
{
lblCurrentOperation.Text = "Starting Course Extractor";
UC_CourseExtractorStatus.Status = CourseStatus.Starting;
});
Extractor.ExtractCourseStructure(out _videosCount);
Quality quality = GetFromUI <Quality>(() => cmboxQuality.SelectedIndex);
UpdateUI(() =>
{
lblCurrentOperation.Text = $"Extracting Course...[0/{_videosCount}]";
UC_CourseExtractorStatus.Status = CourseStatus.Running;
});
bool isExtracted = true;
Retry.Do(
function: () =>
{
Extractor.ExtractionProgressChanged += Extractor_ExtractionProgressChanged;
course = Extractor.ExtractCourse(quality);
},
exceptionMessage: "An error occured while extracting the course",
actionOnError: () =>
{
MessageBox.Show($"An error occured while extracting the course.\nTrying again", "Unknown Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
UpdateUI(() =>
{
progressBar.Value = 0;
_currentVideoIndex = 0;
Extractor.ExtractionProgressChanged -= Extractor_ExtractionProgressChanged;
});
Extractor.CloseTabs();
},
actionOnFatal: () =>
{
Extractor.KillDrivers();
UpdateUI(() =>
{
EnableControls(true);
UC_CourseExtractorStatus.Status = CourseStatus.Failed;
lblCurrentOperation.Text = "Course Extraction Failed";
});
isExtracted = false;
});
if (!isExtracted)
{
return(null);
}
UpdateUI(() =>
{
lblCurrentOperation.Text = "Course Extracted Successfully";
UC_CourseExtractorStatus.Status = CourseStatus.Finished;
});
return(course);
}