// CS 142, Project 2, Window Manager
// This provided main program uses your TileManager class.
// It displays a DrawingPanel, creates several random Tile objects,
// and adds them to your manager.  It also listens for mouse clicks, notifying
// your tile manager when the mouse buttons are pressed.

// A left-click raises a tile to the top of the Z-order.
// A Shift-left-click lowers a tile to the bottom of the Z-order.
// A right-click (or a Ctrl-left-click for Mac people) deletes a tile.
// A Shift-right-click (or a Shift-Ctrl-left-click for Mac people) deletes 
// all tiles touching the mouse point.

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.util.Random;
import javax.swing.SwingUtilities;
import javax.swing.event.MouseInputAdapter;

public class TileMain {
    // constants for the drawing panel size, tile sizes, and # of tiles
    public static final int WIDTH = 300;
    public static final int HEIGHT = 300;
    public static final int MIN_SIZE = 20;
    public static final int MAX_SIZE = 100;
    public static final int TILES = 20;
    
    // set to true to catch and print any exceptions that occur
    private static final boolean CATCH_EXCEPTIONS = true;
    
    public static void main(String[] args) {
        DrawingPanel panel = new DrawingPanel(WIDTH, HEIGHT);
        Graphics g = panel.getGraphics();
        
        // create several random tiles and put them into a manager
        TileManager list = new TileManager();
        for (int i = 0; i < TILES; i++) {
            Tile tile = makeRandomTile();
            list.addTile(tile);
        }
        list.drawAll(g);
        
        // listen for key presses
        RectangleKeyListener listener = new RectangleKeyListener(panel, list);
        panel.addKeyListener(listener);
        
        // listen for mouse clicks
        RectangleMouseListener listener2 = new RectangleMouseListener(panel, list);
        panel.addMouseListener(listener2);
    }
    
    // Creates and returns a random tile to be placed into the tile manager.
    public static Tile makeRandomTile() {
        // choose random coordinates
        Random rand = new Random();
        int w = rand.nextInt(MAX_SIZE - MIN_SIZE + 1) + MIN_SIZE;
        int h = rand.nextInt(MAX_SIZE - MIN_SIZE + 1) + MIN_SIZE;
        int x = rand.nextInt(WIDTH - w);
        int y = rand.nextInt(HEIGHT - h);
        
        // choose random color (avoid very darkest range of palette)
        int red   = rand.nextInt(206) + 50;
        int green = rand.nextInt(206) + 50;
        int blue  = rand.nextInt(206) + 50;
        Color color = new Color(red, green, blue);
        
        // add random tile to manager
        Tile tile = new Tile(x, y, w, h, color);
        return tile;
    }
    
    // A class for responding to mouse clicks on the drawing panel.
    public static class RectangleMouseListener extends MouseInputAdapter {
        private DrawingPanel panel;
        private TileManager list;
        
        public RectangleMouseListener(DrawingPanel panel, TileManager list) {
            this.panel = panel;
            this.list = list;
        }
        
        public void mousePressed(MouseEvent event) {
            int x = event.getX() / panel.getZoom();
            int y = event.getY() / panel.getZoom();
            
            try {
                if (event.isControlDown() || SwingUtilities.isRightMouseButton(event)) {
                    // treat right-clicks and control-left-clicks as the same (for Mac users)
                    if (event.isShiftDown()) {
                        list.deleteAll(x, y);
                    } else {
                        list.delete(x, y);
                    }
                } else {
                    if (event.isShiftDown()) {
                        list.lower(x, y);
                    } else {
                        list.raise(x, y);
                    }
                }

                // repaint all of the tiles
                panel.clear();
                Graphics g = panel.getGraphics();
                list.drawAll(g);
            } catch (RuntimeException e) {
                if (CATCH_EXCEPTIONS) {
                    e.printStackTrace(System.err);
                } else {
                    throw e;
                }
            }
        }
    }

    // A class for responding to key presses on the drawing panel.
    public static class RectangleKeyListener extends KeyAdapter {
        private DrawingPanel panel;
        private TileManager list;
        
        public RectangleKeyListener(DrawingPanel panel, TileManager list) {
            this.panel = panel;
            this.list = list;
        }
        
        public void keyPressed(KeyEvent event) {
            int code = event.getKeyCode();
            if (code == KeyEvent.VK_N) {
                Tile newTile = makeRandomTile();
                list.addTile(newTile);
                Graphics g = panel.getGraphics();
                list.drawAll(g);
            } else if (code == KeyEvent.VK_S) {
                list.shuffle(WIDTH, HEIGHT);
                Graphics g = panel.getGraphics();
                panel.clear();
                list.drawAll(g);
            }
        }
    }
}