public ActionResult AddProblem(ProblemDetailModel model)
{
// 检查参数。
if (string.IsNullOrEmpty(Request.QueryString["id"]))
{
return(Redirect("~/Contest"));
}
int contestId;
if (!int.TryParse(Request.QueryString["id"], out contestId))
{
return(Redirect("~/Contest"));
}
if (!ContestManager.Default.IsContestExist(contestId))
{
return(Redirect("~/Contest"));
}
// 验证数据模型。
if (!TryValidateModel(model))
{
ViewBag.TitleErrorMessage = ModelStateHelper.GetFirstError(ModelState, "Title");
return(View(model));
}
ContestHandle contestHandle = new ContestHandle(contestId);
using (ContestDataProvider contestData = ContestDataProvider.Create(contestHandle, false))
{
// 验证用户操作权限。
if (!UserSession.IsAuthorized(Session) ||
string.Compare(contestData.Creator, UserSession.GetUsername(Session), false) != 0)
{
return(Redirect("~/Error/AccessDenied"));
}
// 在题目库中创建题目。
ProblemHandle problemHandle = ProblemArchieveManager.Default.CreateProblem(
contestData.PeekNextProblemId());
model.ResetNullStrings();
model.SaveTo(problemHandle); // 为避免死锁，该句不应放置在下面的 using 块中。
using (ProblemDataProvider problemData = ProblemDataProvider.Create(problemHandle, false))
{
problemData.ContestId = contestId;
problemData.AuthorizationGroup = UserGroup.Guests;
}
// 将创建的题目添加至当前比赛中。
contestData.AddProblem(problemHandle);
}
return(Redirect($"~/Contest/Show?id={contestId}"));
}
public ActionResult AddArchieveProblem(FormCollection form)
{
// 验证参数。
if (string.IsNullOrEmpty(Request.QueryString["contestId"]) ||
string.IsNullOrEmpty(form["ProblemId"]))
{
return(new ContentResult());
}
string problemId = form["ProblemId"];
int contestId;
if (!int.TryParse(Request.QueryString["contestId"], out contestId))
{
return(new ContentResult());
}
if (!ProblemArchieveManager.Default.IsProblemExist(problemId) ||
!ContestManager.Default.IsContestExist(contestId))
{
return(new ContentResult());
}
using (ContestDataProvider contestData = ContestDataProvider.Create(new ContestHandle(contestId), false))
{
// 检查用户操作权限。
if (!UserSession.IsAuthorized(Session) ||
string.Compare(contestData.Creator, UserSession.GetUsername(Session), false) != 0)
{
return(new ContentResult());
}
// 执行操作。
// 创建源题目的精确副本到当前比赛中。
ProblemHandle newProblemHandle = ProblemArchieveManager.Default.CloneProblem(
contestData.PeekNextProblemId(), problemId);
using (ProblemDataProvider problemData = ProblemDataProvider.Create(newProblemHandle, false))
{
problemData.ContestId = contestId;
}
contestData.AddProblem(newProblemHandle);
}
return(new ContentResult());
}