using FL.Data.Items;
using System;
using System.Collections.Generic;
using XGame;
using XGame.Framework.Data;

namespace FL.Data
{
    /// <summary>
    /// 背包格子数据
    /// </summary>
    public class BagItemData
    {
        public long id;
        public int tableId;
        public long num;
        public int girdIndex; // 背包格子索引
        public EquipItem equipItemData;
    }

    public class ItemData : DataSingleton<ItemData>, IDisposable
    {
        private Dictionary<int, BagItemData> _bagItemDataDic = new Dictionary<int, BagItemData>(); // 背包中的道具数据

        /// <summary>
        /// 添加一个物品道具数据
        /// </summary>
        /// <param name="tableId"></param>
        /// <param name="count"></param>
        public void AddItemData(int tableId, long count, bool bAdd = false)
        {
            // 如果背包中已拥有该道具直接改变物品数量
            if (OnChangeItemNum(tableId, count, bAdd))
            {
                return;
            }
            int girdIndex = GetEmptyGridIndex();
            AddBagItemData(girdIndex, new BagItemData()
            {
                id = UIDDefine.New(),
                tableId = tableId,
                num = count,
                girdIndex = girdIndex,
            });
        }

        /// <summary>
        /// 模拟数据测试用
        /// </summary>
        /// <returns></returns>
        public int GetEmptyGridIndex()
        {
            return _bagItemDataDic.Count + 1;
        }
        /// <summary>
        /// 添加背包格子数据
        /// </summary>
        /// <param name="index"></param>
        /// <param name="data"></param>
        public void AddBagItemData(int index, BagItemData data)
        {
            _bagItemDataDic.Add(index, data);
        }


        /// <summary>
        /// 拥有的道具数量
        /// </summary>
        /// <param name="tableId"></param>
        /// <returns></returns>
        public long GetItemNum(int tableId)
        {
            long count = 0;
            foreach (var item in _bagItemDataDic)
            {
                if (item.Value?.tableId == tableId)
                {
                    count += item.Value.num;
                }
            }
            return count;
        }
       
        /// <summary>
        /// 减少物品数量
        /// </summary>
        /// <param name="tableId"></param>
        /// <param name="count"></param>
        public void ReduceItemNum(int tableId, long count)
        {
            for (int i = 1; i <= _bagItemDataDic.Count; i++)
            {
                if (_bagItemDataDic[i]?.tableId == tableId)
                {
                    if (_bagItemDataDic[i].num > count)
                    {
                        _bagItemDataDic[i].num -= count;
                        return;
                    }
                    else
                    {
                        count -= _bagItemDataDic[i].num;
                        _bagItemDataDic[i] = null;
                    }
                }
            }
        }
        /// <summary>
        /// 道具数量变化
        /// </summary>
        /// <param name="tableId"></param>
        /// <param name="count"></param>
        /// <returns></returns>
        public bool OnChangeItemNum(int tableId, long count, bool bAdd)
        {
            for (int i = 1; i <= _bagItemDataDic.Count; i++)
            {
                if (_bagItemDataDic[i]?.tableId == tableId)
                {
                    _bagItemDataDic[i].num = bAdd ? (_bagItemDataDic[i].num + count) : count;
                    return true;   
                }
            }
            return false;
        }

        /// <summary>
        /// 获取礼包|红包类型道具(道具页签)，常规道具类型(材料页签)用来在背包界面显示
        /// </summary>
        /// <returns></returns>
        public Dictionary<int, BagItemData> GetBackpackData()
        {
            return _bagItemDataDic;
        }

        void IDisposable.Dispose()
        {
            if (_bagItemDataDic?.Count > 0) 
            {
                foreach (var item in _bagItemDataDic)
                {
                    if (item.Value?.equipItemData != null)
                    {
                        item.Value.equipItemData.Dispose();
                    }
                }
                _bagItemDataDic.Clear();
            }
        }
    }
}