protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
DateTime birthDate = (DateTime)value;
int age = DateUtil.CalculateAge(birthDate);
// your validation logic
if (age >= 18)
{
return(ValidationResult.Success);
}
else
{
return(new ValidationResult("You must be at least 18 years old"));
}
}
public async Task <ActionResult> Attend(Guid id)
{
Event eventEntity = await UnitOfWork.Events.GetWithRelated(id, e => e.Category, e => e.Attendances);
if (eventEntity == null)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = "Event doesn't exist." });
}
if (!eventEntity.IsActive)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = "Event isn't active." });
}
if (eventEntity.StartDate < DateTime.Now.AddHours(-1))
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = "Too late to join this event." });
}
Guid attendanceId = Guid.Parse(HttpContext.User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.NameIdentifier).Value);
User user = await UnitOfWork.Users.Get(attendanceId);
//check if user already attended
if (eventEntity.Attendances.FirstOrDefault(a => a.AttendeeId == attendanceId) != null)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = "You are already attending this event." });
}
//check if user is host
if (eventEntity.HostId == attendanceId)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = "As a host, you don't need the join your event." });
}
//check if event has age limit, and user is eligible
if (eventEntity.MinAgeLimit.HasValue)
{
int age = DateUtil.CalculateAge(user.BirthDate);
if (age < eventEntity.MinAgeLimit.Value)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = $"This event has minimum age limit {eventEntity.MinAgeLimit.Value}, and you are {age} years old." });
}
}
if (eventEntity.MaxAgeLimit.HasValue)
{
int age = DateUtil.CalculateAge(user.BirthDate);
if (age > eventEntity.MaxAgeLimit.Value)
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = $"This event has maximum age limit {eventEntity.MaxAgeLimit.Value}, and you are {age} years old." });
}
}
//check if event has already max number of people
if (eventEntity.MaxNumberOfPeople.HasValue)
{
//check how many attendances for the event
if (!(eventEntity.Attendances.Count < eventEntity.MaxNumberOfPeople.Value))
{
throw new RestError(HttpStatusCode.BadRequest, new { Event = $"This event has already {eventEntity.MaxNumberOfPeople.Value} people." });
}
}
Attendance attendance = new Attendance
{
CreatedAt = DateTime.Now,
AttendeeId = attendanceId,
EventId = id
};
UnitOfWork.Attendances.Add(attendance);
await UnitOfWork.CompleteAsync();
return(Ok());
}