using System;
using System.Collections.Generic;
using JNGame.Math;

namespace JNGame.Sync.State.Tile
{
    public class JNSSTileTool
    {

        public static bool IsTileIndex(int[][] Tiles,(int X, int Y) xTuple)
        {
            if (xTuple.X >= 0 && xTuple.Y >= 0)
            {
                return xTuple.Y < Tiles.Length && xTuple.X < Tiles[0].Length;
            }
            return false;
        }
        
        
        /// <summary>
        /// 获取TileID X Y
        /// </summary>
        /// <returns></returns>
        public static (int X, int Y) GetTileIDXY(int[][] Tiles,int index)
        {
            
            // 遍历数组  
            for (int y = 0; y < Tiles.Length; y++)  
            {  
                for (int x = 0; x < Tiles[y].Length; x++)  
                {  
                    // 检查当前元素是否非零  
                    if (Tiles[y][x] != 0 && Tiles[y][x] == index)  
                    {  
                        // 返回找到的坐标  
                        return (x,y);
                    }  
                }  
            }

            throw new Exception();

        }
        
        /// <summary>
        /// 根据TileId 获取最大最小范围
        /// </summary>
        /// <returns></returns>
        public static (LVector2 Max,LVector2 Min) GetTileContains(int[][] Tiles, int TileSize,int index)
        {
            (int X, int Y) = GetTileIDXY(Tiles,index);
            var min = new LVector2(X.ToLFloat() * TileSize,Y.ToLFloat() * TileSize);
            var max = new LVector2((X + 1).ToLFloat() * TileSize,(Y + 1).ToLFloat() * TileSize);
            return (max,min);
        }

        /// <summary>
        /// 获取九宫格Index
        /// </summary>
        /// <returns></returns>
        public static List<int> GetTileGridIndex(int[][] Tiles, int TileSize, (int X, int Y) xTuple)
        {
            List<int> grid = new List<int>();
            // 填充九宫格
            for (int i = -1; i <= 1; i++)  
            {  
                for (int j = -1; j <= 1; j++)  
                {  
                    int tempX = xTuple.X + i;  
                    int tempY = xTuple.Y + j; // 注意这里j+1+1是因为数组第二维存储的是y坐标  
                    if (IsTileIndex(Tiles,(tempX,tempY))) grid.Add(Tiles[tempY][tempX]);
                }  
            }
            return grid;
        }
        public static List<int> GetTileGridIndex(int[][] Tiles, int TileSize, int index)
        {
            return GetTileGridIndex(Tiles,TileSize,GetTileIDXY(Tiles,index));
        }
        public static List<int> GetTileGridIndex(int[][] Tiles,int TileSize,LVector3 pos)
        {
            return GetTileGridIndex(Tiles,TileSize,GetXYIndex(Tiles,TileSize,pos));
        }

        /// <summary>
        /// 获取Index
        /// </summary>
        /// <param name="Tiles"></param>
        /// <param name="TileSize"></param>
        /// <param name="pos"></param>
        /// <returns></returns>
        public static int GetTileIndex(int[][] Tiles,int TileSize,LVector3 pos)
        {
            (int x, int y) = JNSSTileTool.GetXYIndex(Tiles,TileSize,pos);
            return Tiles[y][x];
        }
        
        /// <summary>
        /// 获取XY
        /// </summary>
        /// <param name="Tiles"></param>
        /// <param name="TileSize"></param>
        /// <param name="pos"></param>
        /// <returns></returns>
        public static (int X, int Y) GetXYIndex(int[][] Tiles,int TileSize,LVector3 pos)
        {
            // 遍历数组  
            for (int y = 0; y < Tiles.Length; y++)  
            {  
                for (int x = 0; x < Tiles[y].Length; x++)  
                {  
                    // 检查当前元素是否非零  
                    if (Tiles[y][x] != 0)  
                    {  
                        
                        //判断是否所在区块
                        var min = new LVector2(x.ToLFloat() * TileSize,y.ToLFloat() * TileSize);
                        var max = new LVector2((x + 1).ToLFloat() * TileSize,(y + 1).ToLFloat() * TileSize);
                        
                        // 假设LVector2是一个包含X和Y属性的结构体或类  
                        // 检查X坐标是否在范围内  
                        if (pos.x < min.x || pos.x >= max.x)  
                        {  
                            continue; // X坐标不在范围内  
                        }  
                        // 检查Y坐标是否在范围内  
                        if (pos.z < min.y || pos.z >= max.y)  
                        {  
                            continue; // Y坐标不在范围内  
                        }
                        
                        return (x,y);

                    }  
                }  
            }

            return (0,0);
        }
        
    }
}