private async Task GetCourseDetail(string courseId)
{
try
{
var result = await NPAPI.GetCourseDetail(courseId);
ApplyCourseDetail(result);
}
catch (NPAPI.SessionExpiredException)
{
//Send GA Event
App.Current.GATracker.SendEvent("Session", "Session Expired", null, 0);
//Try background login
try
{
await NPAPI.BackgroundLogin();
await GetCourseDetail(courseId);
}
catch
{
Frame.Navigate(typeof(LoginPage));
}
}
catch (Exception e)
{
detailTextBlock.Text = e.Message;
}
}
public static async Task <Credits> Parse(string html)
{
var blockMatch = new Regex("請先完成[^教]+教學評量。", RegexOptions.IgnoreCase | RegexOptions.Multiline).Match(html);
if (blockMatch.Success)
{
throw new System.Exception(blockMatch.Value);
}
var credits = new Credits();
var tableRegex = new Regex("<img src=\\./image/or_ball\\.gif>([^<]+)</h3>\n<table border=1 BGCOLOR=#CCFFFF>(?:(?!<\\/table>).|\n)*", RegexOptions.Multiline | RegexOptions.IgnoreCase);
var tablematches = tableRegex.Matches(html);
var semesters = new List <Semester>();
foreach (Match match in tablematches)
{
semesters.Add(ParseTable(match));
}
credits.Semesters = semesters;
var tasks = new List <Task>();
foreach (Semester semester in semesters)
{
tasks.AddRange(semester.Credits.Select(async credit =>
{
var courseDetail = await NPAPI.GetCourseDetail(credit.CourseId);
//Set course detail
credit.Detail = courseDetail;
if (credit.Grade >= 60)
{
//Sum credits for each detailed type
if (credits.TotalDetailTypeCredits.ContainsKey(credit.Detail.Type))
{
credits.TotalDetailTypeCredits[credit.Detail.Type] += credit.Credits;
}
else
{
credits.TotalDetailTypeCredits.Add(credit.Detail.Type, credit.Credits);
}
//Sum credits for each type
if (credits.TotalTypeCredits.ContainsKey(credit.Type))
{
credits.TotalTypeCredits[credit.Type] += credit.Credits;
}
else
{
credits.TotalTypeCredits.Add(credit.Type, credit.Credits);
}
//Sum semester credits
credits.TotalCreditsGot += credit.Credits;
}
}));
}
//Run all tasks in parallel
await Task.WhenAll(tasks.ToArray());
return(credits);
}
