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

using System;
using System.Collections.Generic;
using UnityEngine;
using BrewMonster.Network;

namespace PerfectWorld.Scripts.Shop
{
    //	CECBackShop
    public class CECBackShop : CECShopArrayItems
    {
        private CECShopItemCategory m_fashionShopCategory = new CECShopItemCategory();
        private static CECBackShop s_instance;
        private GShopLoader m_shopLoader;

        private CECBackShop() : base(null)
        {
            // Initialize with empty list first
            m_pItems = new List<GShopItem>();
            
            // Try to get shop loader data (may not be available immediately)
            RefreshShopData();

            if (IsFashionShopEnabled())
            {
                m_fashionShopCategory.InitFromQShopConfig(CECQShopConfig.CID_BACKSHOP_FASHION);
            }
        }
        
        public void RefreshShopData()
        {
            // Initialize with shop loader data
            GameObject shopLoaderObj = GameObject.FindFirstObjectByType<GShopLoader>()?.gameObject;
            if (shopLoaderObj != null)
            {
                m_shopLoader = shopLoaderObj.GetComponent<GShopLoader>();
                if (m_shopLoader != null && m_shopLoader.secondaryShop != null && m_shopLoader.secondaryShop.items != null)
                {
                    m_pItems = m_shopLoader.secondaryShop.items;
                }
            }
        }

        public static CECBackShop Instance()
        {
            if (s_instance == null)
            {
                s_instance = new CECBackShop();
            }
            return s_instance;
        }

        public override bool GetFromServer(int beginIndex, int endIndex)
        {
            bool result = false;
            // TODO: Implement cooldown check (GP_CT_GET_DIVIDEND_MALL_PRICE)
            // For now, always allow if indices are provided
            if (beginIndex == 0 && endIndex == 0)
            {
                // Request all prices
                // TODO: Implement UnityGameSession.RequestGetDividendMallItemPrice(0, 0)
                result = true;
            }
            else if (beginIndex != 0 || endIndex != 0)
            {
                // Request specific range
                // TODO: Implement UnityGameSession.RequestGetDividendMallItemPrice(beginIndex, endIndex)
                result = true;
            }
            return result;
        }

        public override uint GetLocalTimeStamp()
        {
            if (m_shopLoader != null && m_shopLoader.secondaryShop != null)
            {
                return m_shopLoader.secondaryShop.timestamp;
            }
            return 0;
        }

        public override uint GetServerTimeStamp()
        {
            // TODO: Get from game run state
            // return g_pGame->GetGameRun()->GetGShopTimeStamp2();
            return GetLocalTimeStamp(); // Stub for now
        }

        public bool UpdateFromServer() // TODO: Add S2C::cmd_dividend_mall_item_price parameter when available
        {
            // TODO: Implement server update logic when S2C command structure is available
            // For now, this is a stub
            /*
            List<GShopItem> items = new List<GShopItem>(m_pItems);
            if (!ApplyChangesFromServer(items, pCmd))
            {
                return false;
            }
            if (IsSame(items, m_pItems))
            {
                return true;
            }
            m_pItems = items;
            OnItemChange();
            */
            return true;
        }

        private bool ApplyChangesFromServer(List<GShopItem> pItems) // TODO: Add S2C::cmd_dividend_mall_item_price parameter when available
        {
            // TODO: Implement when S2C command structure is available
            /*
            int i = 0;
            for (i = pCmd->start_index; i < pCmd->end_index; i++)
            {
                if (i < pItems.Count)
                {
                    GShopItem data = pItems[i];
                    for (int j = 0; j < 4; j++)
                    {
                        if (data.buy != null && j < data.buy.Length && data.buy[j].type != -1)
                        {
                            GShopBuyOption buyOption = data.buy[j];
                            buyOption.type = -1;
                            buyOption.price = 0;
                            data.buy[j] = buyOption;
                        }
                    }
                    pItems[i] = data;
                }
            }
            for (i = 0; i < pCmd->count; i++)
            {
                const S2C::cmd_dividend_mall_item_price::good_info& tempList = pCmd->list[i];
                if (tempList.good_index < pItems.Count)
                {
                    GShopItem data = pItems[tempList.good_index];
                    if (data.id == (uint)tempList.good_id)
                    {
                        if (data.buy != null && tempList.good_slot < data.buy.Length)
                        {
                            GShopBuyOption buyOption = data.buy[tempList.good_slot];
                            buyOption.price = tempList.good_price;
                            buyOption.status = tempList.good_status;
                            buyOption.time = tempList.expire_time;
                            buyOption.type = 3;
                            data.buy[tempList.good_slot] = buyOption;
                        }
                        pItems[tempList.good_index] = data;
                    }
                    else
                    {
                        Debug.Assert(data.id == (uint)tempList.good_id);
                        return false;
                    }
                }
            }
            */
            return true;
        }

        public override int GetCash()
        {
            // TODO: Integrate with CECHostPlayer.GetDividend()
            // For now, return 0 as stub
            // return CECHostPlayer.Instance().GetDividend();
            return 0;
        }

        public override bool Buy(int itemIndex, int buyIndex)
        {
            bool bOK = false;

            if (ReadyToBuy(itemIndex, buyIndex))
            {
                GShopItem? pItem = GetItem(itemIndex);
                if (pItem.HasValue)
                {
                    GShopItem item = pItem.Value;
                    if (!CECShopItemOwnerNPC.HasOwnerNPC(item))
                    {
                        // Regular dividend mall shopping
                        // TODO: Implement UnityGameSession.RequestDividendMallShopping(1, itemIndex, item.id, buyIndex)
                        // For now, use regular mall shopping as fallback
                        UnityGameSession.Instance.RequestMallShopping(1, (int)item.id, itemIndex, buyIndex);
                    }
                    else
                    {
                        // NPC server dividend mall shopping
                        // TODO: Implement UnityGameSession.RequestNPCSevDividendMallShopping(1, itemIndex, item.id, buyIndex)
                        UnityGameSession.Instance.RequestMallShopping(1, (int)item.id, itemIndex, buyIndex);
                    }
                    CECQShopConfig.Instance().OnItemBuyed(item.id);
                    // TODO: CECShoppingItemsMover::Instance().OnItemBuyed(this, itemIndex, buyIndex);
                    bOK = true;
                }
            }
            else
            {
                Debug.Assert(false, "Item not ready to buy");
            }
            return bOK;
        }

        public override bool IsFashionShopEnabled()
        {
            return CECUIConfig.Instance().GetGameUI().bEnableBackShopFashionShop;
        }

        public override bool IsFashionShopFlashSaleEnabled()
        {
            return CECUIConfig.Instance().GetGameUI().bEnableBackShopFashionShopFlashSale;
        }

        public override string GetFashionShopFlashSaleTitle()
        {
            return CECUIConfig.Instance().GetGameUI().strBackShopFashionShopFlashSaleTitle;
        }

        public override CECShopItemCategory GetFashionShopCategory()
        {
            return m_fashionShopCategory;
        }
    }
}