public UserCourse CreateCourse(int userId, int topicId, int nTasks, int durationDays)
{
if (database.UserCourses.Find(c => c.UserId == userId && c.EndDate > DateTime.Now).Count() > 0)
{
throw new Exception("User has unfinished course.");
}
var newUserCourse = new UserCourse
{
UserId = userId,
EndDate = DateTime.Now.AddDays(durationDays)
};
var tasksForTopic = database.Tasks.Find(t => t.TopicId == topicId).ToList();
var rand = new Random();
for (int i = 0; i < nTasks; ++i)
{
var randomTask = tasksForTopic[rand.Next(0, tasksForTopic.Count)];
tasksForTopic.Remove(randomTask);
var newCourseTask = new CourseTask
{
TaskId = randomTask.Id,
CompPer = 0
};
newUserCourse.CourseTasks.Add(newCourseTask);
}
database.UserCourses.Create(newUserCourse);
database.Save();
return(newUserCourse);
}
public void Create(string email, string password)
{
ValidateEmail(email);
ValidatePassword(password);
var user = new User {
Name = email
};
user.Hash = HashConverter.ToString(CreateHash(password));
database.Users.Create(user);
database.Save();
}
