82 lines
2.5 KiB
C#
82 lines
2.5 KiB
C#
using System;
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namespace Tanshu.Accounts.Contracts
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{
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public enum BillItemType
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{
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Product,
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Kot,
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Information,
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Total
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}
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public class BillItemKey
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{
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private BillItemKey(int productID, int kotID, BillItemType billItemType)
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{
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if (kotID < 0)
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throw new ArgumentException("KotID Cannot be Negative");
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if (productID < 0)
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throw new ArgumentException("ProductID Cannot be Negative");
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BillItemType = billItemType;
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ProductID = productID;
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KotID = kotID;
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}
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public BillItemKey(int kotID)
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: this(0, kotID, BillItemType.Kot)
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{ }
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public BillItemKey(int productID, int kotID)
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: this(productID, kotID, BillItemType.Product)
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{ }
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private int _productID;
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public int ProductID
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{
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get { return BillItemType == BillItemType.Product ? _productID : 0; }
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private set { _productID = BillItemType == BillItemType.Product ? value : 0; }
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}
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public int KotID { get; private set; }
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public BillItemType BillItemType { get; private set; }
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public override int GetHashCode()
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{
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return BillItemType == BillItemType.Product ?
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ProductID.GetHashCode() ^ KotID.GetHashCode() ^ BillItemType.GetHashCode()
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: KotID.GetHashCode() ^ BillItemType.GetHashCode(); ;
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}
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public override bool Equals(object obj)
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{
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if (obj is BillItemKey)
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return (this == (BillItemKey)obj);
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else
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return false;
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}
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public override string ToString()
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{
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return string.Format("{0} - {1}", ProductID, KotID);
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}
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public static bool operator ==(BillItemKey a, BillItemKey b)
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{
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if (object.ReferenceEquals(null, a))
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return object.ReferenceEquals(null, b);
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if (!(a is BillItemKey))
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return false;
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if (!(b is BillItemKey))
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return false;
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if (a.BillItemType != b.BillItemType)
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return false;
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return a.BillItemType == BillItemType.Product ?
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a.ProductID == b.ProductID && a.KotID == b.KotID && a.BillItemType == b.BillItemType
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: a.KotID == b.KotID && a.BillItemType == b.BillItemType;
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}
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public static bool operator !=(BillItemKey a, BillItemKey b)
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{
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return !(a == b);
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}
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}
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}
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