using System;
using System.Collections;
using System.Collections.Generic;
using DG.Tweening;
using UnityEngine;
using Random = System.Random;

public class ItemSystem : MonoBehaviour
{
    public static ItemSystem ins;
    public List<UnLockGrid> unLockGrids;
    [SerializeField] public Transform unLockTrans;
    public Transform packPosition;
    public List<ItemObj> itemObjs=new List<ItemObj>();
    public List<ItemObj> LoadItemObjs = new List<ItemObj>();
    private Dictionary<string, ItemObj> itemObjDic=new Dictionary<string, ItemObj>();
    
   

    public float moveTime
    {
        get;
        private set;
    }

    public float boxMoveTime
    {
        get;
        private set;
    }

    public float speed
    {
        get;
        private set;
    }

    public float boxSpeed
    {
        get;
        private set;
    }

    public float points
    {
        get;
        private set;
    }

    public float boxPoints
    {
        get;
        private set;
    }
    

    private void Awake()
    {
        ins = this;
        ResetDic();
        moveTime = 10;
        speed = 100;
        points = 0;
        boxMoveTime = 10;
        boxSpeed = 100;
        boxPoints = 0;
    }

    private void ResetDic()
    {
        foreach (var item in LoadItemObjs)
        {
            itemObjDic.Add(item.ID,item);
        }
    }

    public ItemObj itemObj(string key)
    {
        return itemObjDic[key];
    }
    
/// <summary>
/// 初始化物品列表
/// </summary>
/// <param name="itemDatas"></param>
    public void InitItem(List<ItemData> itemDatas)
    {
        if (itemObjs.Count>0)
        {
            for (int i = itemObjs.Count-1; i >= 0; i--)
            {
                RestGrid(itemObjs[i]._grids);
                Destroy(itemObjs[i].gameObject);
            }

            itemObjs = new List<ItemObj>();
        }
        
        foreach (var itemData in itemDatas)
        {
            var obj = Instantiate(itemData.item, transform);
            var item = obj.GetComponent<ItemObj>();
            SetPosition(item,MapManager.ins.WaitGrids[itemData.x,itemData.y]);
            item.startGrid = MapManager.ins.WaitGrids[itemData.x, itemData.y];
            List<Grid> grids = new List<Grid>();
            for (var i = itemData.x; i < itemData.x+item.itemSize.x; i++)
            {
                for (var j = itemData.y; j < itemData.y + item.itemSize.y; j++)
                {
                    // MapManager.ins.WaitGrids[i, j].item = item;
                    MapManager.ins.WaitGrids[i, j].SaveItemObj(item);
                    grids.Add(MapManager.ins.WaitGrids[i, j]);
                }
            }

            item.type = GridType.wait;
            item.SetOccGrid(grids);
            itemObjs.Add(item);
        }

        ResetWaitGrid();
    }
/// <summary>
/// 开启随机
/// </summary>
/// <param name="list"></param>
    public IEnumerator RandomItem(List<RandomItemData> list,Action action)
    {
        BoxDebug.Log("开始随机道具位置");
        List<ItemObj> objs = new List<ItemObj>();
        foreach (var randomItem in list)
        {
            for (int i = 0; i < randomItem.num; i++)
            {
                var obj = Instantiate(randomItem.item.gameObject, transform);
                obj.GetComponent<ItemObj>().SetLevel(randomItem.level,randomItem.itemID);
                objs.Add(obj.GetComponent<ItemObj>());
                yield return null;
            }
        }

        var randomData = RandomSortList(objs);
        ResetPool(randomData);
        action.Invoke();
    }
/// <summary>
/// 放置道具
/// </summary>
/// <param name="ListT"></param>
    public void ResetPool(List<ItemObj> ListT)
    {
        BoxDebug.Log("开始地块放置");
        List<List<StartGrid>> list = new List<List<StartGrid>>();
        list.Add(new List<StartGrid>());
        int x = 0;
        int y = 0;
        int index = 0;
        List<ItemObj[,]> itemMatrix = new List<ItemObj[,]>();
        itemMatrix.Add(new ItemObj[MapManager.ins.waitX, MapManager.ins.waitY]); 
        foreach (var item in ListT)
        {
            GetMatrixIndex(itemMatrix[index], item,list[index], out var bo);
            if (!bo)
            {
                itemMatrix.Add(new ItemObj[MapManager.ins.waitX, MapManager.ins.waitY]);
                list.Add(new List<StartGrid>());
                index++;
                GetMatrixIndex(itemMatrix[index], item,list[index], out var bos);
            }
        }

        CoordinateRandom(list);
        if (itemObjs.Count>0)//清理预制体
        {
            for (int i = itemObjs.Count-1; i >= 0; i--)
            {
                RestGrid(itemObjs[i]._grids);
                Destroy(itemObjs[i].gameObject);
            }

            itemObjs = new List<ItemObj>();
        }

        for (int i = list.Count-1; i >= 0; i--)
        {
            var startData = list[i];
            foreach (var start in startData)
            {
                start.item.startGrid = MapManager.ins.WaitGrids[start.x, start.y];
                start.item.orderIndexSet = (list.Count - i)*2;
                SetPosition(start.item,start.item.startGrid);
                List<Grid> grids = new List<Grid>();
                for (var k = start.x; k < start.x+start.item.itemSize.x; k++)
                {
                    for (var f = start.y; f < start.y + start.item.itemSize.y; f++)
                    {
                        // MapManager.ins.WaitGrids[i, j].item = item;
                        MapManager.ins.WaitGrids[k, f].SaveItemObj(start.item);
                        grids.Add(MapManager.ins.WaitGrids[k, f]);
                    }
                }
                start.item.SetOccGrid(grids);
                itemObjs.Add(start.item);
            }
        }

        

        ResetWaitGrid();
    }

    public void ResetWaitGrid()
    {
        foreach (var grid in MapManager.ins.WaitList)
        {
            grid.RemoveNullStack();
            grid.ResetWaitBack();
        }

        foreach (var item in itemObjs)
        {
            item.Reset();
        }
    }


    private void CoordinateRandom(List<List<StartGrid>> list)
    {
        foreach (var startList in list)
        {
            ItemObj[,] itemMatrix=new ItemObj[MapManager.ins.waitX, MapManager.ins.waitY];
            foreach (var start in startList)
            {
                for (int i = start.x; i < start.x+start.item.itemSize.x; i++)
                {
                    for (int j = start.y; j < start.y+start.item.itemSize.y; j++)
                    {
                        itemMatrix[i, j] = start.item;
                    }
                }
            }
            foreach (var start in startList)
            {
                RandomCoordinate(itemMatrix, start);
            }
        }
    }

    private void RandomCoordinate(ItemObj[,] itemMatrix,StartGrid startGrid)
    {
        
        int indexX = UnityEngine.Random.Range(startGrid.x, MapManager.ins.waitX-startGrid.item.itemSize.x);
        int indexY = UnityEngine.Random.Range(startGrid.y, MapManager.ins.waitY-startGrid.item.itemSize.y);
        for (int i = startGrid.x; i < startGrid.x+startGrid.item.itemSize.x; i++)
        {
            for (int j = startGrid.y; j < startGrid.y+startGrid.item.itemSize.y; j++)
            {
                itemMatrix[i, j] = null;
            }
        }
        for (int i = indexX; i < startGrid.item.itemSize.x+indexX; i++)
        {
            for (int j = indexY; j < startGrid.item.itemSize.y+indexY; j++)
            {
                if (itemMatrix[i,j]!=null)
                {
                    RandomCoordinate(itemMatrix, startGrid);
                    return;
                }
            }
        }
        for (int i = indexX; i < startGrid.item.itemSize.x+indexX; i++)
        {
            for (int j = indexY; j < startGrid.item.itemSize.y+indexY; j++)
            {
                itemMatrix[i, j] = startGrid.item;
            }
        }
        startGrid.x = indexX;
        startGrid.y = indexY;
    }
/// <summary>
/// 放置道具
/// </summary>
/// <param name="itemObjs"></param>
/// <param name="item"></param>
/// <param name="grids"></param>
/// <param name="bo"></param>
    public void GetMatrixIndex(ItemObj[,] itemObjs,ItemObj item,List<StartGrid> grids,out bool bo)
    {
        for (int i = 0; i < MapManager.ins.waitX; i++)
        {
            for (int j = 0; j < MapManager.ins.waitY; j++)
            {
                if (MatrixNull(itemObjs,item,i,j))
                {
                    for (int k = i; k < i+item.itemSize.x; k++)
                    {
                        for (int l = 0; l < j+item.itemSize.y; l++)
                        {
                            itemObjs[k, l] = item;
                        }
                    }

                    var itemGrid = new StartGrid();
                    itemGrid.x = i;
                    itemGrid.y = j;
                    itemGrid.item = item;
                    grids.Add(itemGrid);
                    bo=true;
                    return;
                }
            }
        }

        bo = false;
    }
    /// <summary>
    /// 判断是否可以放置
    /// </summary>
    /// <param name="itemObjs"></param>
    /// <param name="item"></param>
    /// <param name="x"></param>
    /// <param name="y"></param>
    /// <returns></returns>
    public bool MatrixNull(ItemObj[,] itemObjs,ItemObj item,int x, int y)
    {
        if (x+item.itemSize.x>MapManager.ins.waitX||y + item.itemSize.y>MapManager.ins.waitY)
        {
            return false;
        }
        for (int i = x; i < x+item.itemSize.x; i++)
        {
            for (int j = y; j < y + item.itemSize.y; j++)
            {
                if (itemObjs[i,j]!=null)
                {
                    return false;
                }
            }
        }

        return true;
    }
    
    public List<T> RandomSortList<T>(List<T> ListT)
    {
        BoxDebug.Log("随机道具排序");
        Random random = new Random();
        List<T> newList = new List<T>();
        foreach (T item in ListT)
        {
            newList.Insert(random.Next(newList.Count + 1), item);
        }
        return newList;
    }
    public void RestGrid(List<Grid> grids)
    {
        foreach (var grid in grids)
        {
            grid.item = null;
        }
    }

    public void InsUnLock()
    {
        // int index = Random.Range(0, unLockGrids.Count);
        // var unLock = Instantiate(unLockGrids[index].gameObject,unLockTrans);
    }
    public void GetGridsRest(Grid grid,ItemObj item)
    {
        List<Grid> grids = new List<Grid>();
        for (int i = grid.X; i < grid.X+item.itemSize.x; i++)
        {
            for (int j = grid.Y; j < grid.Y+item.itemSize.y; j++)
            {
                switch (grid.Type)
                {
                    case GridType.box:
                        grids.Add(MapManager.ins.boxGrid[i, j]);
                        MapManager.ins.boxGrid[i, j].item = item;
                        break;
                    case GridType.wait:
                        grids.Add(MapManager.ins.WaitGrids[i, j]);
                        MapManager.ins.WaitGrids[i, j].SaveItemObj(item);
                        break;
                    default:
                        throw new ArgumentOutOfRangeException();
                }
            }
        }
        item.SetOccGrid(grids);
        ResetWaitGrid();
    }
    /// <summary>
    /// 设置道具位置
    /// </summary>
    /// <param name="itemObj"></param>
    /// <param name="grid"></param>
    public void SetPosition(ItemObj itemObj, Grid grid)
    {
        itemObj.transform.position = grid.transform.position + itemObj.dev;
        itemObj.type = grid.Type;
    }
/// <summary>
/// 刷新层级
/// </summary>
    public void ResetItemOrder()
    {
        StartCoroutine(ItemOrder());
    }

    private IEnumerator ItemOrder()
    {
        foreach (var item in itemObjs)
        {
            item.ResetOrder();
            yield return null;
        }
    }
/// <summary>
/// 打包道具
/// </summary>
    public void PackItem()
    {
        foreach (var item in itemObjs)
        {
            if (item.type==GridType.box)
            {
                RestGrid(item._grids);
                item.transform.position = packPosition.position;
                //item.transform.DOMove(packPosition.position, 0.2f);
            }
        }
        GameManager.ins.ResetPropattributes();
    }

    public void ItemLevelUp(ItemObj item0,ItemObj item1)
    {
        if (item0 == item1) return;
        if (!item0.LevelUp(item1)) return;
        foreach (var grid in item1._grids)
        {
            grid.Remove(item1);
        }
        itemObjs.Remove(item1);
        Destroy(item1.gameObject);
        GameManager.ins.soundSystem.SynthesisAudio();
        item0.Reset();
    }

    public void ResetPropattributes()
    {
        float lsMoveTime = 10;
        float lsSpeed = 100;
        float lsPoint = 0;
        float lsBoxMoveTime = 10;
        float lsBoxSpeed = 100;
        float lsBoxPoint = 0;
        List<ItemObj> list = new List<ItemObj>();
        foreach (var itemPropat in itemObjs)
        {
            if (itemPropat.type==GridType.box)
            {
                var data = JsonTab.Instance.tables.Prop.Get(itemPropat.itemID);
                switch (data.Propfunction)
                {
                    case 1:
                        lsMoveTime += data.Propattributes;
                        break;
                    case 2:
                        lsSpeed += data.Propattributes;
                        break;
                    case 3:
                        lsPoint += data.Propattributes;
                        break;
                }
            }
        }

        foreach (var grid in itemObjs)
        {
            if (grid.transform.position.x<-10)
            {
                list.Add(grid);
            }
        }

        foreach (var itemObj in list)
        {
            if (itemObj.type==GridType.box)
            {
                var data = JsonTab.Instance.tables.Prop.Get(itemObj.itemID);
                switch (data.Propfunction)
                {
                    case 1:
                        lsBoxMoveTime += data.Propattributes;
                        break;
                    case 2:
                        lsBoxSpeed += data.Propattributes;
                        break;
                    case 3:
                        lsBoxPoint += data.Propattributes;
                        break;
                }
            }
        }

        moveTime = lsMoveTime;
        speed = lsSpeed;
        points = lsPoint;
        boxMoveTime = lsBoxMoveTime;
        boxSpeed = lsBoxSpeed;
        boxPoints = lsBoxPoint;
    }

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}
[Serializable]
public class ItemData
{
    public int x = 0;
    public int y = 0;
    public GameObject item;
}
[Serializable]
public class RandomItemData
{
    public int num;
    public int level;
    public int itemID;
    public ItemObj item;
}

[Serializable]
public class StartGrid
{
    public int x;
    public int y;
    public ItemObj item;
}

[Serializable]
public class RandomData
{
    public List<StartGrid> _list = new List<StartGrid>();
}