using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

class Farm
{
    private Crops[,] crops;
    private Random r;
    private CropTypesHolder PresetCrops = new CropTypesHolder();
    private int Update;
    private Astar astar = new Astar();
    private PerlinNoise perlin = new PerlinNoise();
    private Vector2 RainPosition;
    private Vector2 WindSpeed = new Vector2(0,0);
    private System.Drawing.Color[][] RainfallMap;
    private float[][] whiteNoise;
    private float[][] perlinNoise;
    private int resetBitMap = 0;
   

    //initializes the crops
    public void init(Vector2 Size, Vector2 housepos)
    {
        whiteNoise = PerlinNoise.GenerateWhiteNoise(100, 100);
        perlinNoise = PerlinNoise.GeneratePerlinNoise(whiteNoise, 1);
        PresetCrops.init();
        r = new Random();
        crops = new Crops[100, 100];
        int dirtCount = 0;
        for (int i = 0; i < 99; i++)
        {
            for (int j = 0; j < 99; j++)
            {
                int x = 0;

                if (perlinNoise[i][j] > 0 && perlinNoise[i][j] < 0.15f)
                    x = 0;
                else if (perlinNoise[i][j] >= 0.15f && perlinNoise[i][j] < 0.8f)
                    x = 1;
                else if (perlinNoise[i][j] >= 0.8f)
                    x = 2;
                crops[i, j] = new Crops();
                crops[i, j].setStatus(x);
                crops[i, j].setOriginalStatus();
                x = r.Next(0, 12);
                crops[i, j].setCropType(x, PresetCrops.getPresetCropTypes(x));
                crops[i, j].init();

                if (crops[i, j].getStatus() == 2)
                {
                    dirtCount++;
                }
            }
        }
        for (int i = 0; i < 99; i++)
        {
            for (int j = 0; j < 99; j++)
            {
                if (crops[i, j].getStatus() == 2)
                {
                    if (!astar.isReachable(crops, new Vector2((int)i, (int)j), housepos))
                    {
                        //crops[i, j].setStatus(1);
                        dirtCount--;
                    }
                }
            }
        }
        if (dirtCount != 0)
            init(Size, housepos);
        RainPosition.X = r.Next(0, 1900);
        RainPosition.Y = r.Next(0, 1950);
        WindSpeed.X = r.Next(-1, 1);
        WindSpeed.Y = r.Next(-1, 1);
        RainfallMap = PerlinNoise.LoadImage("C:/Users/Oskar/source/repos/PotatoPlanFinal/Game1/Content/Rainfall.png");
    }

    public Rectangle getRainPosition(int TileSize, int x, int y)
    {
        return new Rectangle((int)(-TileSize * (RainPosition.X - Math.Truncate(RainPosition.X))) + TileSize * x, (int)(-TileSize * (RainPosition.Y - Math.Truncate(RainPosition.Y))) + TileSize * y, TileSize, TileSize);
    }

    public void updateFarm(Vector2 Size, int nDay)
    {
        Update++;
        if (Update == 30)
        {
            for (int i = 0; i < Size.X; i++)
            {
                for (int j = 0; j < Size.Y; j++)
                {

                    crops[i, j].updateCrop(Size, RainfallMap[(int)Math.Round(RainPosition.X) + i][(int)Math.Round(RainPosition.Y) + j].GetBrightness());
                }
            }

            Update = 0;
        }
        updateRainMapPosition();
    }


    //Changes the properties of the tile when the tractor reaches this tile.
    public void setCropStatus(float xfloat, float yfloat)
    {
        int x = (int)xfloat;
        int y = (int)yfloat;
        if (crops[x, y].getStatus() >= 3)
        {
            crops[x, y].setStatus(2);
        }
        else if(crops[x, y].getStatus() == 0)
        {
            //do nothing
        }
        else if (crops[x, y].getStatus() == 2)
        {
            
            crops[x, y].setStatus(3);
            crops[x, y].setCropTimer();
        }
    }

    public Crops getCrop(int x, int y)
    {
        return crops[x,y];
    }

    public Crops[,] getCrops()
    {
        return crops;
    }

    private void updateRainMapPosition()
    {
        float x, y;
        x = WindSpeed.X + GetRandomNumber(-0.02, 0.02);
        y = WindSpeed.Y + GetRandomNumber(-0.02, 0.02);

        if (x < 0.02f && x > -0.02f)
        {
            WindSpeed.X = x;
        }

        if (y < 0.02f && y > -0.02f)
        {
            WindSpeed.Y = y;
        }

        if (WindSpeed.X > 0 && RainPosition.X < 1900)
        {
            RainPosition.X = RainPosition.X + WindSpeed.X;
        }
        else if (WindSpeed.X < 0 && RainPosition.X > 1)
        {
            RainPosition.X = RainPosition.X + WindSpeed.X;
        }

        if (WindSpeed.Y > 0 && RainPosition.Y < 1900)
        {
            RainPosition.Y = RainPosition.Y + WindSpeed.Y;
        }
        else if (WindSpeed.Y < 0 && RainPosition.Y > 1)
        {
            RainPosition.Y = RainPosition.Y + WindSpeed.Y;
        }
        resetBitMap++;
        if (resetBitMap == 100000)
        {
            RainPosition.X = r.Next(700, 1300);
            RainPosition.Y = r.Next(700, 1300);
            resetBitMap = 0;
        }

    }

    public void setNewHousePos(Vector2 pos, bool newState)
    {
        crops[(int)pos.X, (int)pos.Y].setHousePos(newState);
    }

    public CropTypes getPresetCropTypes(int Index)
    {
        return PresetCrops.getPresetCropTypes(Index - 1);
    }

    public void setCropType(int x, int y, int Type)
    {
        crops[x, y].setCropType(Type, PresetCrops.getPresetCropTypes(Type));
    }

    public void UpdatePreferedCrops(Vector2 Size)
    {
        for (int i = 0; i < Size.X; i++)
        {
            for (int j = 0; j < Size.X; j++)
            {
                if (crops[i, j].getStatus() != 3)
                {
                    int x = getHighestProductionRate(i, j);
                    crops[i, j].setCropType(x, PresetCrops.getPresetCropTypes(x));
                }
            }
        }
    }

    private int getHighestProductionRate(int x, int y)
    {
        int i = 1, holderIndex = 0;
        float holder = 0, SampleHolder = 0;
        do
        {
            holder = getProductionRate(x, y, i);
            if (SampleHolder < holder)
            {
                holderIndex = i;
                SampleHolder = holder;
            }
            i++;
        } while (i < 12);
        return holderIndex;
    }

    public Color getRainAmount(int x, int y)
    {
        if (RainfallMap[x + (int)Math.Round(RainPosition.X)][y + (int)Math.Round(RainPosition.Y)].GetBrightness() < 0.60f)
        {
            return Color.FromNonPremultiplied(255, 255, 255, 0);
        }
        else
        {
            return Color.FromNonPremultiplied(255, 255, 255, (int)(300 * RainfallMap[x + (int)Math.Round(RainPosition.X)][y + (int)Math.Round(RainPosition.Y)].GetBrightness()));
        }
        
    }

    public float getProductionRate(int x, int y, int Type)
    {
        return crops[x, y].getProductionRate(PresetCrops.getPresetCropTypes(Type));
    }

    public float GetRandomNumber(double minimum, double maximum)
    {
        return (float)(Math.Round(r.NextDouble() * (maximum - minimum) + minimum, 2));
    }
}