public ActionResult Show()
{
// 检查 URL 查询参数。
if (string.IsNullOrEmpty(Request.QueryString["id"]))
{
return(Redirect("~/Contest"));
}
int id;
if (!int.TryParse(Request.QueryString["id"], out id))
{
return(Redirect("~/Contest"));
}
ViewBag.ContestId = id;
// 检查用户权限。
ContestHandle contest = new ContestHandle(id);
UserHandle user = UserSession.GetUserHandle(Session);
switch (ContestAuthorization.GetUserAuthorizationState(contest, user).RegisterState)
{
case ContestRegisterState.IndividualRegistered:
case ContestRegisterState.TeamRegistered:
return(View());
case ContestRegisterState.PasswordRequired:
return(Redirect($"~/Contest/Verify?id={id}"));
case ContestRegisterState.NotRegistered:
default:
return(Redirect("~/Contest"));
}
}
public ActionResult Delete()
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(new ContentResult());
}
int contestId;
if (!int.TryParse(contestIdString, out contestId))
{
return(new ContentResult());
}
ContestHandle contest = new ContestHandle(contestId);
UserHandle user = UserSession.GetUserHandle(Session);
// 检查用户操作权限。
if (!ContestAuthorization.GetUserAccess(contest, user).HasFlag(DataAccess.Write))
{
// 用户对该比赛没有写权限。
return(new ContentResult());
}
ContestManager.Default.RemoveContest(contestId);
return(new ContentResult());
}
public ActionResult ContestRegisterIdentity()
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(QueryResult(1, "Contest ID is required."));
}
int contestId;
if (!int.TryParse(contestIdString, out contestId))
{
return(QueryResult(2, "Invalid contest ID."));
}
ContestHandle contest = new ContestHandle(contestId);
UserHandle user = UserSession.GetUserHandle(Session);
if (user == null)
{
// 当前会话中不存在任何活动的登录用户。
return(QueryResult(3, "User session not exist."));
}
ContestAuthorizationState authState = ContestAuthorization.GetUserAuthorizationState(contest, user);
if (authState.RegisterState == ContestRegisterState.NotRegistered ||
authState.RegisterState == ContestRegisterState.PasswordRequired)
{
return(QueryResult(string.Empty));
}
else
{
if (authState.RegisterState == ContestRegisterState.IndividualRegistered)
{
return(QueryResult(user.Username));
}
else
{
TeamHandle registeredTeam = new TeamHandle(authState.TeamId);
using (TeamDataProvider teamData = TeamDataProvider.Create(registeredTeam, true))
{
return(QueryResult(teamData.Name));
}
}
}
}
public ActionResult ContestDetail()
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(QueryResult(1, "Contest ID required."));
}
int contestId;
if (!int.TryParse(contestIdString, out contestId))
{
return(QueryResult(2, "Invalid contest ID."));
}
// 检查用户权限。
ContestHandle contest = new ContestHandle(contestId);
DataAccess access = ContestAuthorization.GetUserAccess(contest, UserSession.GetUserHandle(Session));
if (access == DataAccess.None)
{
return(QueryResult(3, "Access denied."));
}
else if (access == DataAccess.Read)
{
// 用户对于该场比赛处于只读状态。检查比赛的执行状态。
bool loadProblems = true;
using (ContestDataProvider contestData = ContestDataProvider.Create(contest, true))
{
if (contestData.Status == ContestStatus.Pending)
{
loadProblems = false;
}
}
return(QueryResult(ContestDisplayModel.FromContestHandle(contest, loadProblems)));
}
else
{
return(QueryResult(ContestDisplayModel.FromContestHandle(contest, true)));
}
}
/// <summary>
/// 将当前数据模型中的内容保存至给定的比赛。
/// </summary>
/// <param name="handle">比赛句柄。</param>
/// <exception cref="ArgumentNullException"/>
public void SaveTo(ContestHandle handle)
{
if (handle == null)
{
throw new ArgumentNullException(nameof(handle));
}
using (ContestDataProvider data = ContestDataProvider.Create(handle, false))
{
data.Title = Title;
data.Creator = Creator;
data.AuthorizationGroup = UsergroupConvert.ConvertFromString(UsergroupName);
data.StartTime = DateTime.ParseExact(StartTimeString, "yyyy-MM-dd HH:mm:ss", new CultureInfo("en-US"));
data.EndTime = DateTime.ParseExact(EndTimeString, "yyyy-MM-dd HH:mm:ss", new CultureInfo("en-US"));
data.ParticipationMode = ContestParticipationModeConvert.ConvertFromString(ParticipationModeName);
data.AuthorizationMode = ContestAuthorizationModeConvert.ConvertFromString(AuthorizationModeName);
}
ContestAuthorization.UpdateContestPassword(handle, Password ?? string.Empty);
}
public ActionResult ContestAccess()
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(QueryResult(1, "Contest ID is required."));
}
int contestId;
if (!int.TryParse(contestIdString, out contestId))
{
return(QueryResult(2, "Invalid contest ID."));
}
ContestHandle contest = new ContestHandle(contestId);
UserHandle user = UserSession.GetUserHandle(Session);
return(QueryResult(ContestAuthorization.GetUserAccess(contest, user)));
}
public ActionResult SetAnnouncement(FormCollection form)
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(new ContentResult());
}
int contestId;
if (!int.TryParse(contestIdString, out contestId))
{
return(new ContentResult());
}
string announcement = form["announcementContent"];
if (string.IsNullOrEmpty(announcement))
{
return(new ContentResult());
}
// 检查用户身份权限。
ContestHandle contest = new ContestHandle(contestId);
UserHandle user = UserSession.GetUserHandle(Session);
if (!ContestAuthorization.GetUserAccess(contest, user).HasFlag(DataAccess.Write))
{
// 用户对当前的比赛没有写权限。
return(new ContentResult());
}
using (ContestDataProvider contestData = ContestDataProvider.Create(contest, false))
{
contestData.Announcement = announcement;
}
return(new ContentResult());
}
public ActionResult Verify()
{
// 检查用户操作权限。
if (!UserSession.IsAuthorized(Session))
{
return(LoginController.RequestForLogin(this));
}
// 检查 URL 查询参数。
if (string.IsNullOrEmpty(Request.QueryString["id"]))
{
return(Redirect("~/Contest"));
}
int id;
if (!int.TryParse(Request.QueryString["id"], out id))
{
return(Redirect("~/Contest"));
}
ContestHandle contest = new ContestHandle(id);
UserHandle user = new UserHandle(UserSession.GetUsername(Session));
ContestAuthorizationState state = ContestAuthorization.GetUserAuthorizationState(contest, user);
switch (state.RegisterState)
{
case ContestRegisterState.IndividualRegistered:
case ContestRegisterState.TeamRegistered:
return(Redirect($"~/Contest/Show?id={id}"));
case ContestRegisterState.PasswordRequired:
return(View());
case ContestRegisterState.NotRegistered:
default:
ViewBag.Failed = true;
return(View());
}
}
public ActionResult Verify(FormCollection form)
{
string contestIdString = Request.QueryString["id"];
if (string.IsNullOrEmpty(contestIdString))
{
return(Redirect("~/Contest"));
}
int contestId;
if (!int.TryParse(Request.QueryString["id"], out contestId))
{
return(Redirect("~/Contest"));
}
if (!ContestManager.Default.IsContestExist(contestId))
{
return(Redirect("~/Contest"));
}
ContestHandle contest = new ContestHandle(contestId);
if (!ContestAuthorization.CheckContestPassword(contest, form["Password"]))
{
ViewBag.PasswordError = true;
return(View());
}
else
{
// 检查注册参赛者身份。
string participant = form["Participant"];
if (string.IsNullOrEmpty(participant))
{
ViewBag.ParticipantError = true;
return(View());
}
if (participant.StartsWith("(Individual)", StringComparison.CurrentCultureIgnoreCase))
{
string username = participant.Substring("(Individual)".Length);
if (!UserManager.Default.IsUserExist(username))
{
ViewBag.ParticipantError = true;
return(View());
}
ContestAuthorization.Register(contest, new UserHandle(username));
}
else if (participant.StartsWith("(Teamwork)", StringComparison.CurrentCultureIgnoreCase))
{
int teamId;
if (!int.TryParse(participant.Substring("(Teamwork)".Length), out teamId))
{
ViewBag.ParticipantError = true;
return(View());
}
if (!UserManager.Default.IsTeamExist(teamId))
{
ViewBag.ParticipantError = true;
return(View());
}
ContestAuthorization.Register(contest, new TeamHandle(teamId));
}
else
{
ViewBag.ParticipantError = true;
return(View());
}
return(Redirect(string.Format("~/Contest/Show?id={0}", contestId)));
}
}
