using System;
using System.Collections.Generic;
using ET;
using FairyGUI;
using UI.Bag;
using UI.CommonGame;
using UnityEngine;

namespace GFGGame
{
    public class GiftBoxSelectorView : BaseWindow
    {
        private UI_GiftBoxSelectorUI _ui;
        private int _itemId;
        private int _count; //物品数量
        private int _selCount; //选择的数量
        private Dictionary<int, int> _selDic; //选择礼包内的物品<物品id,数量>
        private List<LongPressGesture> _listLongPress = new List<LongPressGesture>();

        public override void Dispose()
        {
            if (_selDic != null)
            {
                _selDic.Clear();
                _selDic = null;
            }

            for (int i = 0; i < _listLongPress.Count; i++)
            {
                _listLongPress[i].Dispose();
            }

            _listLongPress.Clear();

            if (_ui != null)
            {
                _ui.Dispose();
                _ui = null;
            }

            base.Dispose();
        }

        protected override void OnInit()
        {
            base.OnInit();

            packageName = UI_GiftBoxSelectorUI.PACKAGE_NAME;
            _ui = UI_GiftBoxSelectorUI.Create();
            this.viewCom = _ui.target;
            this.viewCom.Center();
            this.modal = true;

            _selDic = new Dictionary<int, int>();

            _ui.m_btnCancel.onClick.Add(OnBtnCancelClick);
            _ui.m_list.itemRenderer = ListItemRender;
            _ui.m_btnSub.onClick.Add(OnBtnSubClick);
        }

        protected override void AddEventListener()
        {
            base.AddEventListener();
        }

        protected override void OnShown()
        {
            base.OnShown();
            _itemId = (int)this.viewData;
            _count = (int)ItemDataManager.GetItemNum(_itemId);

            _selDic.Clear();
            _selCount = 0;

            UpdateView();
            UpdateList();
            SetSelAllNum();
        }

        protected override void OnHide()
        {
            if (_ui.m_list.numItems > 0)
            {
                _ui.m_list.ScrollToView(0);
            }

            _ui.m_list.numItems = 0;
            _selDic.Clear();
            _selCount = 0;

            base.OnHide();
        }

        protected override void RemoveEventListener()
        {
            base.RemoveEventListener();
        }

        private void UpdateView()
        {
            ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(_itemId);
            _ui.m_loaIcon.url = ResPathUtil.GetIconPath(itemCfg);
            _ui.m_txtName.text = itemCfg.name;
            _ui.m_txtTotalNum.text = $"已拥有：{_count}";
            _ui.m_txtItemDes.text = string.IsNullOrEmpty(itemCfg.desc) ? "暂无描述" : itemCfg.desc;
        }

        private void UpdateList()
        {
            ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(_itemId);
            _ui.m_list.numItems = itemCfg.itemsArr.Length;
            _ui.m_list.visible = true;
        }

        private void ListItemRender(int index, GObject obj)
        {
            ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(_itemId);
            UI_ListSelectorItem uiItemChild = UI_ListSelectorItem.Proxy(obj);

            int[] itemChildArr = itemCfg.itemsArr[index];
            ItemCfg itemCfgChild = ItemCfgArray.Instance.GetCfg(itemChildArr[0]);
            uiItemChild.m_loaIcon.url = ResPathUtil.GetIconPath(itemCfgChild);
            uiItemChild.m_loaIcon.onClick.Add(OnListSelectorItemClick);
            uiItemChild.m_txtNum.text = itemChildArr[1].ToString();
            uiItemChild.m_txtSelNum.text = "0";
            uiItemChild.m_btnAdd.onClick.Add(OnBtnAddClick);
            uiItemChild.m_btnReduce.onClick.Add(OnChildBtnReduceClick);

            if (uiItemChild.target.data == null)
            {
                LongPressGesture longPressGesture = new LongPressGesture(uiItemChild.m_btnAdd);
                longPressGesture.trigger = 0.3f;
                longPressGesture.interval = 0.1f;
                longPressGesture.once = false;
                longPressGesture.onAction.Add(OnLongPress);
                _listLongPress.Add(longPressGesture);
                
                LongPressGesture longPressGesture2 = new LongPressGesture(uiItemChild.m_btnReduce);
                longPressGesture2.trigger = 0.3f;
                longPressGesture2.interval = 0.1f;
                longPressGesture2.once = false;
                longPressGesture2.onAction.Add(OnLongPressReduce);
                _listLongPress.Add(longPressGesture);
            }

            uiItemChild.target.data = itemCfgChild;
            UI_ListSelectorItem.ProxyEnd();
        }

        private void OnBtnAddClick(EventContext context)
        {
            GObject sender = context.sender as GObject;
            GObject obj = sender.parent;
            UI_ListSelectorItem listItem = UI_ListSelectorItem.Proxy(obj);

            ItemCfg itemCfg = obj.data as ItemCfg;
            UpdateSel(listItem, itemCfg);
        }

        private void OnLongPress(EventContext context)
        {
            LongPressGesture gesture = (LongPressGesture)context.sender;
            var host = gesture.host;
            GObject obj = host.parent;
            UI_ListSelectorItem listItem = UI_ListSelectorItem.Proxy(obj);

            ItemCfg itemCfg = obj.data as ItemCfg;
            UpdateSel(listItem, itemCfg);
        }

        private void UpdateSel(UI_ListSelectorItem listItem, ItemCfg itemCfg)
        {
            if (_selCount == _count)
            {
                return;
            }

            if (listItem.m_txtSelNum.text == _count.ToString())
            {
                return;
            }

            if (_selDic.TryGetValue(itemCfg.id, out int num))
            {
                if (num == _count)
                {
                    return;
                }

                _selCount += 1;
                _selDic[itemCfg.id] = num + 1;
                listItem.m_txtSelNum.text = Convert.ToString(Convert.ToInt32(listItem.m_txtSelNum.text) + 1);
            }
            else
            {
                _selDic.Add(itemCfg.id, 1);
                _selCount += 1;
                listItem.m_txtSelNum.text = Convert.ToString(1);
            }

            SetSelAllNum();
        }
        
        private void OnChildBtnReduceClick(EventContext context)
        {
            GObject sender = context.sender as GObject;
            GObject obj = sender.parent;
            UI_ListSelectorItem listItem = UI_ListSelectorItem.Proxy(obj);

            ItemCfg itemCfg = obj.data as ItemCfg;
            UpdateReduceSel(listItem, itemCfg);
        }

        private void OnLongPressReduce(EventContext context)
        {
            LongPressGesture gesture = (LongPressGesture)context.sender;
            var host = gesture.host;
            GObject obj = host.parent;
            UI_ListSelectorItem listItem = UI_ListSelectorItem.Proxy(obj);

            ItemCfg itemCfg = obj.data as ItemCfg;
            UpdateReduceSel(listItem, itemCfg);
        }
        
        private void UpdateReduceSel(UI_ListSelectorItem listItem, ItemCfg itemCfg)
        {
            if (_selCount == 0)
            {
                return;
            }

            if (listItem.m_txtSelNum.text == "0")
            {
                return;
            }
            
            if (_selDic.TryGetValue(itemCfg.id, out int num))
            {
                if (num == 0)
                {
                    return;
                }

                _selCount -= 1;
                _selDic[itemCfg.id] = num - 1;
                listItem.m_txtSelNum.text = Convert.ToString(Convert.ToInt32(listItem.m_txtSelNum.text) - 1);
            }
            else
            {
                _selCount -= 1;
                _selDic.Add(itemCfg.id, 0);
                listItem.m_txtSelNum.text = Convert.ToString(0);
            }

            SetSelAllNum();
        }

        private void SetSelAllNum()
        {
            _ui.m_txtSelRewardStr.text = $"已选奖励：{_selCount}/{_count}";
        }
        
        //弹出物品详细描述框
        private void OnListSelectorItemClick(EventContext context)
        {
            GObject sender = context.sender as GObject;
            GObject obj = sender.parent;
            ItemCfg itemCfg = obj.data as ItemCfg;
            GoodsItemTipsController.ShowItemTips(itemCfg.id);
        }

        private void OnBtnCancelClick()
        {
            this.Hide();
        }

        //确认按钮
        private void OnBtnSubClick()
        {
            List<GiftBoxSelChildItemProto> reqItemList = new List<GiftBoxSelChildItemProto>();

            foreach (var itemKv in _selDic)
            {
                reqItemList.Add(new GiftBoxSelChildItemProto
                {
                    ChildItemId = itemKv.Key,
                    ChildItemCount = itemKv.Value
                });
            }

            ItemProxy.ReqUseGiftBoxSelItem(_itemId, reqItemList).Coroutine();
            this.Hide();
        }
    }
}