/// <summary>
/// 次卡消费
/// </summary>
/// <param name="timesCardProduct">次卡对象</param>
/// <param name="tutor">教师</param>
/// <returns>消费记录</returns>
public Consumption Consume(Tutor tutor)
{
if (Remainder <= 0)
{
throw new BalanceNotEnoughException("余额不足！");
}
Remainder--;
Consumption consumption = new Consumption()
{
MemberCard = this,
MemberCardId = this.Id,
Tutor = tutor,
TutorId = tutor.Id,
ConsumeDate = DateTime.Now
};
Consumptions.Add(consumption);
return(consumption);
}
/// <summary>
/// 课时消费
/// </summary>
/// <param name="lectureProduct">课程对象</param>
/// <param name="tutor">教师</param>
/// <param name="lectureDescription">授课内容</param>
/// <returns>消费记录</returns>
public Consumption Learn(Tutor tutor, string lectureDescription)
{
if (Remainder <= 0)
{
throw new BalanceNotEnoughException("余额不足！");
}
Remainder--;
Session session = new Session()
{
MemberCard = this,
MemberCardId = this.Id,
Tutor = tutor,
TutorId = tutor.Id,
Description = lectureDescription,
ConsumeDate = DateTime.Now
};
Consumptions.Add(session);
return(session);
}