public int add(DonHang obj)
{
//tinh toán tong tiền
int sum = 0;
foreach (var item in obj.ds_chitiet_donhang)
{
item.dongia = item.sanpham_chitiet.sanpham.gia;//for sure
sum += item.dongia * item.soluong;
//cập nhật tồn kho trên sản phẩm
item.sanpham_chitiet.tonkho -= item.soluong;
if (item.sanpham_chitiet.tonkho < 0)
{
item.sanpham_chitiet.tonkho = 0;
}
//thêm log tồn kho
TonKho tk = new TonKho();
tk.ngay = obj.ngay;
tk.soluong = item.sanpham_chitiet.tonkho;
item.sanpham_chitiet.ds_tonkho.Add(tk);
}
obj.tongtien = sum;
//call add
this._db.ds_donhang.Add(obj);
//commit
this.save();
//return ma moi nhat
return this._db.ds_donhang.Max(x => x.id);
}
public int add(TonKho obj)
{
this._db.ds_tonkho.Add(obj);
//commit
this.save();
//return ma moi nhat
return this._db.ds_tonkho.Max(x => x.id);
}
public Boolean delete(TonKho obj)
{
try
{
//get entity
obj = this.get_by_id(obj.id);
//remove
this._db.ds_tonkho.Remove(obj);
//commit
return this.save();
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
return false;
}
}
public void update_tonkho(int quantity, DateTime ngay)
{
//set so luong
this.tonkho = quantity;
//them lich su ton kho
TonKho tk = new TonKho();
tk.soluong = quantity;
tk.ngay = ngay;
this.ds_tonkho.Add(tk);
}
