public void AddSubject(Name subjectName)
{
if (Subjects.Any(s => s.Name == subjectName))
{
throw DomainException.With($"SubjectName '{subjectName}' already exists in this unit.");
}
_subjects.Add(new Subject(subjectName));
}
public void AddSmsBalance(int amount)
{
if (amount <= 0)
{
throw DomainException.With("Invalid addition amount :{0}", amount);
}
SmsBalance += amount;
}
public Subject RemoveSubject(int id)
{
for (var i = 0; i < _subjects.Count; i++)
{
if (_subjects[i].Id == id)
{
var subject = _subjects[i];
_subjects.Remove(subject);
return(subject);
}
}
throw DomainException.With("Subject id {0} does not exist in {1} - {2} unit", id, Id, Name);
}
public void DeductSmsBalance(int amount)
{
if (amount <= 0)
{
throw DomainException.With("Invalid deduction amount :{0}", amount);
}
if (SmsBalance - amount < 0)
{
throw DomainException.With(
"Insufficient SMS credit.Current credit :{0}, DeductAmount :{1} ",
SmsBalance,
amount);
}
SmsBalance -= amount;
}