public AvailabilityResult CanUserTakeQuiz(
User u,
DateTime date,
IList <QuizResult> results)
{
if (MaxTaken.HasValue && results.Count >= MaxTaken)
{
return(AvailabilityResult.No(
"This quiz has already been taken the maximum number of times.",
"This quiz can only be taken " + MaxTaken.Value + " times."));
}
if (MaxAwarded.HasValue && results.Count(x => !String.IsNullOrEmpty(x.Transaction)) >= MaxAwarded)
{
return(AvailabilityResult.No(
"This quiz has already awarded you points the maximum number of times.",
"You can only be awarded points by this quiz " + MaxAwarded + " times."));
}
if (Cooldown.HasValue &&
results.Count > 0 &&
(results.Max(x => x.Taken) + Cooldown.Value < date))
{
return(AvailabilityResult.No(
"This quiz cannot be taken again until " + (results.Max(x => x.Taken) + Cooldown.Value).ToShortDateString() + ".",
"You must wait at least " + Cooldown.Value.TotalDays.ToString("n0") + " days between attempts."));
}
return(AvailabilityResult.Ok);
}
/// <summary>
/// Determine if a user is allowed access to this resource, at a given point in time.
/// </summary>
/// <param name="u">User</param>
/// <param name="date">Date</param>
/// <returns>
/// False, unless either the given user is in the Users list, the user's current group is
/// in the Groups list, or the AvailableToPublic or AvailableToAllUsers flags are set, and
/// the supplied date is within the From and To properties of the Availability and the
/// Resource is Enabled.
/// </returns>
public AvailabilityResult IsAllowedAccess(User u, DateTime date)
{
// disallow access based on date range settings
if (From.HasValue && date < From.Value)
{
return(AvailabilityResult.No(
"This resource is not yet available.",
"This resource will become available on " + From.Value.ToShortDateString() + ". Please check back then."));
}
if (To.HasValue && date > To.Value)
{
return(AvailabilityResult.No(
"This resource is no longer available.",
"This resource was made unavaible on " + To.Value.ToShortDateString() + ". Please ask your adminstrator to remove any links to this resource."));
}
// allow access based on the group membership & mode
var isInUsers = null != u && null != Users && Users.Contains(u.Document.Id);
var isInGroups = null != u && null != Groups && null != u.Group && Groups.Contains(u.Group);
switch (Mode)
{
case AvailabilityMode.AvailableToPublic: return(AvailabilityResult.Ok);
case AvailabilityMode.AvailableToAllUsers:
if (null != u)
{
return(AvailabilityResult.Ok);
}
break;
case AvailabilityMode.AvailableOnlyTo:
if (isInUsers || isInGroups)
{
return(AvailabilityResult.Ok);
}
break;
case AvailabilityMode.AvailableToEveryoneBut:
if (!isInUsers && !isInGroups)
{
return(AvailabilityResult.Ok);
}
break;
}
return(AvailabilityResult.No(
"You do not have access to this resource.",
"Please ask your adminstrator to grant access to this resource."));
}
public AvailabilityResult IsAllowedAccess(User u, DateTime date)
{
// disallow access based on enabled & date range settings
if (!Enabled)
{
return(AvailabilityResult.No(
"This resource is not enabled.",
"This resource is currently disabled. Please ask an administrator to enabled this resource or to remove any links referencing it."));
}
// if the availability is left blank, allow access by default
return(null == Availability
? AvailabilityResult.Ok
: Availability.IsAllowedAccess(u, date));
}