using Cysharp.Threading.Tasks;
using DG.Tweening;
using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

public class ItemsOnFloor : MonoBehaviour
{
    [SerializeField] RectTransform floorUI;     //掉落道具显示的父类
    [SerializeField] FloorItemCell floorItemCell;    //非装备显示组件
    [SerializeField] MoneyMoveByPath moneyMoveByPathCell;     //掉落物金钱
    [SerializeField] RectTransform defaultDropRect;     //默认掉落位置
    [SerializeField] Text[] expTexts;
    FloorItemCell[] floorItemCells = new FloorItemCell[20];    //包含非装备的战利品掉落
    MoneyMoveByPath[] moneyMoveByPathArr = new MoneyMoveByPath[20];  //掉落货币，金钱，经验等


    void Awake()
    {
        for (int i = 0; i < floorItemCells.Length; i++)
        {
            //将预制体实例化到界面中
            var inst = Instantiate(floorItemCell, floorUI);
            inst.gameObject.name = "floorItemCell" + i;
            inst.transform.localPosition = Vector3.zero;
            floorItemCells[i] = inst;
        }
        for (int i = 0; i < moneyMoveByPathArr.Length; i++)
        {
            var mmbpath = Instantiate(moneyMoveByPathCell, floorUI);
            mmbpath.gameObject.name = "moneyMoveByPath" + i;
            mmbpath.transform.localPosition = Vector3.zero;
            moneyMoveByPathArr[i] = mmbpath;
        }
    }


    //主界面切换模式触发
    private void OnEnable()
    {
        //bug记录：因为断线重连直接销毁界面导致OnEnable二次触发中间没有触发OnDisable，出现多次掉落的现象
        // 已经调整断线重连逻辑，后续观察返回登录界面情况
        // EquipModel.Instance.OnItemDropEvent -= NotifyPlayItemDrop;
        // PackManager.Instance.DeleteItemEvent -= DeleteDropItem;
        //主界面打开和显隐都要刷新
        Display(true, EquipModel.Instance.lastDropIndexs);
        EquipModel.Instance.OnItemDropEvent += NotifyPlayItemDrop;
        PackManager.Instance.DeleteItemEvent += DeleteDropItem;
        for (int i = 0; i < expTexts.Length; i++)
        {
            expTexts[i].text = "";
        }
    }


    private void OnDisable()
    {
        EquipModel.Instance.OnItemDropEvent -= NotifyPlayItemDrop;
        PackManager.Instance.DeleteItemEvent -= DeleteDropItem;

    }


    void NotifyPlayItemDrop(BattleDrops drops)
    {
        if (drops.dropItemPackIndex.Count > 0)
        {
            Display(true, drops.dropItemPackIndex, drops.rectTransform);
        }
        DisplayExp(drops);
    }

    int expIndex = 0;
    void DisplayExp(BattleDrops drops)
    {
        // startPos = new Vector2(transform.localPosition.x + UnityEngine.Random.Range(-30, 30), transform.localPosition.y + UnityEngine.Random.Range(50, 100));

        if (drops.expDrops.Count > 0)
        {
            var nowIndex = expIndex;
            expTexts[nowIndex].text = "E+" + (drops.expDrops[0].Exp + drops.expDrops[0].ExpPoint * Constants.ExpPointValue);
            expTexts[nowIndex].transform.position = drops.rectTransform.position;
            expTexts[nowIndex].transform.DOLocalMove(expTexts[nowIndex].transform.localPosition + new Vector3(0, 20, 0), 1f).SetEase(Ease.InOutSine).onComplete = () =>
            {
                expTexts[nowIndex].text = "";
            };
            
            expIndex = (expIndex + 1) % 6;
        }
    }

    void DeleteDropItem(PackType packType, string guid, int itemID, int index, int clearType)
    {
        if (packType != PackType.DropItem)
            return;

        floorItemCells[index].SetActive(false);
        if (clearType == 1 || index >= moneyMoveByPathArr.Length)
        {
            return;
        }

        if (!EquipModel.Instance.IsEquip(itemID))
        {
            return;
        }

        moneyMoveByPathArr[index].transform.localPosition = floorItemCells[index].transform.localPosition;
        moneyMoveByPathArr[index].SetActive(true);
        moneyMoveByPathArr[index].PlayAnimation(42, 6);
    }

    /// <summary>
    /// 掉落过程的表现 界面格子组件顺序和背包格子顺序一致
    /// </summary>
    /// <param name="isAnimate"></param>
    /// <param name="showCount"></param>
    public void Display(bool isAnimate = false, List<int> indexList = null, RectTransform rect = null)
    {
        for (int i = 0; i < floorItemCells.Length; i++)
        {
            var item = floorItemCells[i];
            var equipModel = PackManager.Instance.GetItemByIndex(PackType.DropItem, i);
            if (equipModel == null)
            {
                //对空物品进行隐藏防范
                item.SetActive(false);
                continue;
            }
            if (!indexList.IsNullOrEmpty() && !indexList.Contains(i))
            {
                //不干涉其他掉落物品
                continue;
            }
            if (item.isActiveAndEnabled)
            {
                //防范一直播放掉落动画,某种原因被打断了后续的界面显示，这里直接触发打开界面
                // EquipModel.Instance.CalcFloorEquip(i);
                continue;
            }

            item.Display(i, isAnimate, rect == null ? defaultDropRect.position : rect.position).Forget();
        }
    }



    
}