public static DM.Contest ToDbModel(this XmlModels.Contest xcontest, string problemIdPrefix)
{
var contest = new DM.Contest();
contest.LastUpdate = DateTime.Now;
contest.Name = xcontest.Name;
var problems = xcontest.Challenge.Problems
.Select(p => new DM.Problem().SetName(p.Name).SetAlias(p.Alias));
var studentDict = new Dictionary <string, DM.Student>();
Func <string, DM.Student> getStudent = (string name) =>
{
if (!studentDict.ContainsKey(name))
{
studentDict[name] = new DM.Student().SetName(name);
}
return(studentDict[name]);
};
var problms = xcontest.Sessions
.SelectMany(s =>
s.Problems.Select(p =>
new DM.Problem()
.SetAlias(p.Alias)
.SetId(problemIdPrefix + p.Id)
.SetSubmitters(new [] { getStudent(s.Party) })
.SetSubmissions(p.Runs
.TakeWhile(run => run.Accepted == "no")
.Concat(p.Runs.Where(run => run.Accepted == "yes").Take(1))
.Select(r => new DM.Submission()
.SetFromRun(r)
.SetContest(contest)
.SetSubmitter(getStudent(s.Party))))))
.GroupBy(p => p.Alias)
.Select(g => new DM.Problem()
.SetContest(contest)
.SetAlias(g.First().Alias)
.SetId(g.First().Id)
.SetSubmissions(g.SelectMany(p => p.Submissions))
.SetSubmitters(g.SelectMany(p => p.Submitters.Select(sp => sp.Student))))
.Select(p => p.SetName(problems.First(pr => pr.Alias == p.Alias).Name));
contest.Problems = problms.Select(pr => pr.SetSubmissions(pr.Submissions.Select(s => s.SetProblem(pr)))).ToList();
contest.Submissions = contest.Problems.SelectMany(p => p.Submissions).ToList();
return(contest);
}
public static DM.Submission SetSubmitter(this DM.Submission submission, DM.Student submitter)
{
submission.Submitter = submitter;
return(submission);
}
public static DM.Student SetSubmissions(this DM.Student student, IEnumerable <DM.Submission> submissions)
{
student.Submissions = submissions.ToList();
return(student);
}
public static DM.Student SetName(this DM.Student student, string name)
{
student.Name = name;
return(student);
}