using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace GameOfLife3D.GameModel
{
    internal class Map
    {
        private Cell[,,] _Cells;
        private int _SizeX, _SizeY, _SizeZ;

        public Cell[,,] Cells => _Cells;
        public int AliveCell => GetAliveCells();

        public Map SwapMap;



        public Map(int XSize, int YSize, int ZSize)
        {
            _Cells = new Cell[XSize, YSize, ZSize];
            StoreDimensions(XSize, YSize, ZSize);
            InitializeCells();
        }

        private void StoreDimensions(int xSize, int ySize, int zSize)
        {
            _SizeX = xSize;
            _SizeY = ySize;
            _SizeZ = zSize;
        }

        public Map(int Size)
        {
            _Cells = new Cell[Size, Size, Size];
            StoreDimensions(Size, Size, Size);
            InitializeCells();
        }

        public void Update()
        {
            if (SwapMap == null)
            {
                SwapMap = new(_SizeX, _SizeY, _SizeZ);
            }
            foreach (var cell in _Cells)
            {
                SwapMap.GetCell(cell.X, cell.Y, cell.Z).isAlive = GetNewState(GetAliveCount(cell), cell.isAlive);
            }
            this.CloneFrom(SwapMap);
        }

        private static bool GetNewState(int value, bool CurrentCellState)
        {
            if (value < Balancing.MIN_ALIVE)
                return false;
            if (value >= Balancing.MIN_ALIVE && value < Balancing.CREATE_MIN)
                return CurrentCellState;
            if (value >= Balancing.CREATE_MIN && value < Balancing.CREATE_MAX)
                return true;
            if (value > Balancing.CREATE_MAX && value < Balancing.MAX_ALIVE)
                return CurrentCellState;
            return false;
        }

        private int GetAliveCount(Cell cell)
        {
            int AliveCount = 0;
            for (int i = -1; i <= 1; i++)
            {
                for (int j = -1; j <= 1; j++)
                {
                    for (int k = -1; k <= 1; k++)
                    {
                        AliveCount += GetCell(cell.X + i, cell.Y + j, cell.Z + k).isAlive ? 1 : 0;
                        if (AliveCount > Balancing.MAX_ALIVE)
                        { return AliveCount; }
                    }
                }
            }
            return AliveCount;
        }

        private void CloneFrom(Map source)
        {
            this._Cells = source.Cells;
        }

        private void InitializeCells()
        {
            for (int i = 0; i < _Cells.GetLength(0); i++)
            {
                for (int j = 0; j < _Cells.GetLength(1); j++)
                {
                    for (int k = 0; k < _Cells.GetLength(2); k++)
                    {
                        _Cells[i, j, k].X = i;
                        _Cells[i, j, k].Y = j;
                        _Cells[i, j, k].Z = k;
                    }
                }
            }
        }
        public ref Cell GetCell(int x, int y, int z)
        {
            //Clamp Values to Bound
            x = Math.Clamp(x, 0, _SizeX-1);
            y = Math.Clamp(y, 0, _SizeY-1);
            z = Math.Clamp(z, 0, _SizeZ-1);
            return ref _Cells[x, y, z];
        }

        private int GetAliveCells()
        {
            int aliveCount = 0;
            foreach (Cell cell in _Cells)
            {
                aliveCount += cell.isAlive ? 1 : 0;
            }
            return aliveCount;
        }

        public void SetRandom(int mod = 2)
        {
            for (int i = 0; i < _Cells.GetLength(0); i++)
            {
                for (int j = 0; j < _Cells.GetLength(1); j++)
                {
                    for (int k = 0; k < _Cells.GetLength(2); k++)
                    {

                        _Cells[i, j, k].isAlive = Random.Shared.Next() % mod == 0;
                        //_Cells[i, j, k].isAlive = true;

                    }
                }
            }
        }
    }
}