// Filename	: CECShopItemOwnerNPC.cs
// Creator	: Xu Wenbin
// Date		: 2013/12/11
// Converted to C#: 2024

using System;

namespace PerfectWorld.Scripts.Shop
{
    //	封装 GSHOP_ITEM 的挂靠 NPC 查询 / Encapsulates NPC ownership query for GSHOP_ITEM
    public class CECShopItemOwnerNPC
    {
        private const int TREASURE_ITEM_OWNER_NPC_COUNT = 8;

        private uint m_ownerNPCID;

        public CECShopItemOwnerNPC(uint ownerNPCID = 0)
        {
            m_ownerNPCID = ownerNPCID;
        }

        public void SetOwnerNPCID(uint ownerNPCID)
        {
            m_ownerNPCID = ownerNPCID;
        }

        public uint GetOwnerNPCID()
        {
            return m_ownerNPCID;
        }

        public bool IsEmpty()
        {
            return GetOwnerNPCID() == 0;
        }

        public bool Equals(CECShopItemOwnerNPC rhs)
        {
            return GetOwnerNPCID() == rhs.GetOwnerNPCID();
        }

        public bool MatchID(uint id)
        {
            return id == m_ownerNPCID;
        }

        public bool MatchItem(GShopItem item)
        {
            if (IsEmpty())
            {
                return !HasOwnerNPC(item);
            }
            bool result = false;
            if (item.ownerNpcs != null)
            {
                for (int i = 0; i < TREASURE_ITEM_OWNER_NPC_COUNT && i < item.ownerNpcs.Length; ++i)
                {
                    if (MatchID(item.ownerNpcs[i]))
                    {
                        result = true;  //	找到了 / Found
                        break;
                    }
                    if (item.ownerNpcs[i] == 0)
                    {
                        break;  //	已经到最后一个了，后面都是0 / Already reached the last one, rest are 0
                    }
                }
            }
            return result;
        }

        public static bool HasOwnerNPC(GShopItem item)
        {
            //	编辑器保证数组中，第一个是非零的在前 / Editor ensures that in the array, the first non-zero is at the front
            return item.ownerNpcs != null && item.ownerNpcs.Length > 0 && item.ownerNpcs[0] != 0;
        }
    }
}