/// <summary>
///
/// </summary>
/// <param name="cost"></param>
/// <param name="itemType"></param>
/// <param name="remark"></param>
/// <param name="billId"></param>
public BillItem(BillItemTypeEnum itemType, decimal cost, string remark, string billId)
{
Id = SnowflakeId.Default().NextId().ToString();
Cost = cost;
BillItemTypeEnum = itemType;
Remark = remark;
BillId = billId;
}
/// <summary>
/// 为账单添加一个账单项
/// </summary>
/// <param name="cost"></param>
/// <param name="itemType"></param>
/// <param name="remark"></param>
public void AddBillItem(BillItemTypeEnum itemType, decimal cost, string remark)
{
if (this.BillItems == null)
{
this.BillItems = new List <BillItem>();
}
BillItem item = new BillItem(itemType, cost, remark, this.Id);
this.BillItems.Add(item);
this.TotalCost += item.Cost;
}
/// <summary>
/// 修改一个订单项的信息
/// </summary>
/// <param name="itemId"></param>
/// <param name="cost"></param>
/// <param name="itemType"></param>
/// <param name="remark"></param>
public void UpDateBillItem(string itemId, decimal cost, BillItemTypeEnum itemType, string remark)
{
if (this.BillItems == null || this.BillItems.Count == 0)
{
throw new Exception("该账单没有账单项可以修改");
}
var item = this.BillItems.FirstOrDefault(c => c.Id == itemId);
if (item == null)
{
throw new Exception("要修改的账单项不存在");
}
this.TotalCost -= item.Cost;
item.UpdateBillItem(itemType, cost, remark);
this.TotalCost += item.Cost;
}
/// <summary>
///
/// </summary>
/// <param name="itemType"></param>
/// <param name="cost"></param>
/// <param name="remark"></param>
public void UpdateBillItem(BillItemTypeEnum itemType, decimal cost, string remark)
{
Cost = cost;
BillItemTypeEnum = itemType;
Remark = remark;
}
