using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using GameOfLife.CellClasses;

namespace GameOfLife
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        const int GridWidth = 100;
        const int GridHeight = GridWidth;
        const int QuadLength = 12;

        private RenderTargetBitmap buffer;
        private DrawingVisual drawingVisual;
        private Color BackgroundColor;
        private Color ForegroundColor;
        private Color GridColor;

        private CellGrid grid;

        public MainWindow()
        {
            InitializeComponent();
            grid = new CellGrid(GridWidth, GridHeight);
            drawingVisual = new DrawingVisual();
            buffer = new RenderTargetBitmap(GridWidth * QuadLength, GridHeight * QuadLength, 96, 96, PixelFormats.Pbgra32);
            display.Source = buffer;


            BackgroundColor = Colors.Wheat;
            ForegroundColor = Colors.Black;
            GridColor = Colors.Green;

            Draw();
        }

        private void Draw()
        {
            if (drawingVisual == null)
                return;
            using (DrawingContext drawingContext = drawingVisual.RenderOpen())
            {
                drawingContext.DrawRectangle(new SolidColorBrush(GridColor), null, new Rect(0, 0, GridWidth * QuadLength, GridHeight * QuadLength));
                for (int x = 0; x < GridWidth; x++)
                {
                    for (int y = 0; y < GridHeight; y++)
                    {
                        if (grid[x, y].Alive)
                        {
                            drawingContext.DrawRectangle(new SolidColorBrush(ForegroundColor), null, new Rect((x * QuadLength) + 1, (y * QuadLength) + 1, QuadLength - 1, QuadLength - 1));
                        }
                        else
                        {
                            drawingContext.DrawRectangle(new SolidColorBrush(BackgroundColor), null, new Rect((x * QuadLength) + 1, (y * QuadLength) + 1, QuadLength - 1, QuadLength - 1));
                        }
                    }
                }
            }

            buffer.Render(drawingVisual);
        }
        private void Draw(Point cell)
        {
            if (drawingVisual == null)
                return;
            using (DrawingContext drawingContext = drawingVisual.RenderOpen())
            {
                int x = (int)cell.X;
                int y = (int)cell.Y;
                drawingContext.DrawRectangle(new SolidColorBrush(GridColor), null, new Rect(x * QuadLength, y * QuadLength, QuadLength, QuadLength));
                if (grid[x, y].Alive)
                {
                    drawingContext.DrawRectangle(new SolidColorBrush(ForegroundColor), null, new Rect((x * QuadLength) + 1, (y * QuadLength) + 1, QuadLength - 1, QuadLength - 1));
                }
                else
                {
                    drawingContext.DrawRectangle(new SolidColorBrush(BackgroundColor), null, new Rect((x * QuadLength) + 1, (y * QuadLength) + 1, QuadLength - 1, QuadLength - 1));
                }
            }

            buffer.Render(drawingVisual);
        }
        private void SetCell(ColorTypes type, Point p)
        {
            Cell i = grid[(int)p.X, (int)p.Y];
            i.Alive = (type == ColorTypes.Primary);
            grid[(int)p.X, (int)p.Y] = i;
            Draw(p);
        }

        private void PassGeneration_Click(object sender, RoutedEventArgs e)
        {
            grid.PassGeneration(RuleSet.Conway);
            Draw();
        }
        private void Invert_Click(object sender, RoutedEventArgs e)
        {
            grid.GenerateNegetive();
            Draw();
        }
        private void display_MouseMove(object sender, MouseEventArgs e)
        {
            Point p = e.GetPosition(display);
            p.X = Math.Floor(p.X / QuadLength);
            p.Y = Math.Floor(p.Y / QuadLength);
            
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                SetCell(ColorTypes.Primary, p);
            }
            else if (e.RightButton == MouseButtonState.Pressed)
            {
                SetCell(ColorTypes.Secondry, p);
            }
        }
        private void display_MouseDown(object sender, MouseButtonEventArgs e)
        {
            Point p = e.GetPosition(display);
            p.X = Math.Floor(p.X / QuadLength);
            p.Y = Math.Floor(p.Y / QuadLength);

            if (e.LeftButton == MouseButtonState.Pressed)
            {
                SetCell(ColorTypes.Primary, p);
            }
            else if (e.RightButton == MouseButtonState.Pressed)
            {
                SetCell(ColorTypes.Secondry, p);
            }
        }

        enum ColorTypes
        {
            Primary,
            Secondry
        }
    }
}