package utils;

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.text.*;
import java.util.*;
import javax.imageio.*;

public class Utils {
	private static boolean RUNNING_FROM_JAR;
	private static Utils classLoaderReference = null;
	public static GraphicsConfiguration gc;
	
	//this constructor should never be called and is only used
	//internally for getting a reference to classLoader
	public Utils() {
		
	}
	
	public static void init(GraphicsConfiguration gc, boolean jar) {
		Utils.gc = gc;
		Utils.RUNNING_FROM_JAR = jar;
	}
	
	public static String dateString() {
		return new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new Date());
	}
	
	private static DisplayMode getBestDisplayMode(GraphicsDevice device, int xRes, int yRes) {
		DisplayMode[] BEST_DISPLAY_MODES = new DisplayMode[] {
				new DisplayMode(xRes, yRes, 32, 0), new DisplayMode(xRes, yRes, 16, 0),
				new DisplayMode(xRes, yRes, 8, 0) };
		
		for (int x = 0; x < BEST_DISPLAY_MODES.length; x++) {
			DisplayMode[] modes = device.getDisplayModes();
			for (int i = 0; i < modes.length; i++) {
				if(modes[i].getWidth() == BEST_DISPLAY_MODES[x].getWidth() && modes[i].getHeight() == BEST_DISPLAY_MODES[x].getHeight() && modes[i].getBitDepth() == BEST_DISPLAY_MODES[x].getBitDepth())
					return BEST_DISPLAY_MODES[x];
			}
		}
		return null;
	}

	public static void chooseBestDisplayMode(GraphicsDevice device, int xRes, int yRes) {
		DisplayMode best = getBestDisplayMode(device, xRes, yRes);
		if (best != null)
			device.setDisplayMode(best);
	}
	
	public static BufferedReader loadTextFile(String fileName) throws IOException {
		if(RUNNING_FROM_JAR) {
			if(classLoaderReference == null)
				classLoaderReference = new Utils();
			
			return new BufferedReader(new InputStreamReader(classLoaderReference.getClass().getResourceAsStream("/"+fileName)));
		}else
			return new BufferedReader(new FileReader(fileName));
	}
	
	public static Font loadFont(String fileName) {
		try {
			if(RUNNING_FROM_JAR) {
				if(classLoaderReference == null)
					classLoaderReference = new Utils();
				
				return Font.createFont(Font.TRUETYPE_FONT, classLoaderReference.getClass().getResourceAsStream("/"+fileName));
			}else
				return Font.createFont(Font.TRUETYPE_FONT, new File(fileName));
		}catch(FontFormatException ffe) {
			ffe.printStackTrace();
		}catch(IOException ioe) {
			ioe.printStackTrace();
		}
		
		return null;
	}
	
	public static BufferedImage loadImg(String fileName) {
		BufferedImage init;
		BufferedImage accelerated;
		
		try {
			if(RUNNING_FROM_JAR) {
				if(classLoaderReference == null)
					classLoaderReference = new Utils();
					
				init = ImageIO.read(classLoaderReference.getClass().getResource("/images/" + fileName));
			}else
				init = ImageIO.read(new File("images/" + fileName));
			
			accelerated = gc.createCompatibleImage(init.getWidth(), init.getHeight(), Transparency.TRANSLUCENT);
			accelerated.getGraphics().drawImage(init, 0, 0, null);
			
			return accelerated;
		}catch(IOException ioe) {
			ioe.printStackTrace();
		}
		
		return null;
	}

	public static BufferedImage loadTransImg(String fileName, Color bgColor, Color shadowColor) {
		BufferedImage init;
		BufferedImage accelerated;
		
		try {
			if(RUNNING_FROM_JAR)
				init = ImageIO.read(classLoaderReference.getClass().getResource("/images/" + fileName));
			else
				init = ImageIO.read(new File("images/" + fileName));
			
			init = makeColorTransparent(init, bgColor, 0x0);
			init = makeColorTransparent(init, shadowColor, 0xA1000000);
			
			accelerated = gc.createCompatibleImage(init.getWidth(), init.getHeight(), Transparency.TRANSLUCENT);
			accelerated.getGraphics().drawImage(init, 0, 0, null);
			
			return accelerated;
		}catch(IOException ioe) {
			ioe.printStackTrace();
		}
		
		return null;
	}
	
	public static BufferedImage makeColorTransparent(BufferedImage image, Color color, int newColor) {  
		BufferedImage dimg = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
		
		Graphics2D g = dimg.createGraphics();  
		g.setComposite(AlphaComposite.Src);  
		g.drawImage(image, null, 0, 0);  
		g.dispose();  
		for(int i = 0; i < dimg.getHeight(); i++) {  
			for(int j = 0; j < dimg.getWidth(); j++) {  
				if(dimg.getRGB(j, i) == color.getRGB()) {  
					dimg.setRGB(j, i, newColor);  
				}  
			}  
		}  
		return dimg;
	}
	
	public static BufferedImage brightenImage(BufferedImage image) {  
		BufferedImage dimg = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
		
		Graphics2D g = dimg.createGraphics();  
		g.setComposite(AlphaComposite.Src);  
		g.drawImage(image, null, 0, 0);  
		g.dispose();
		Color c, newC;
		for(int i = 0; i < dimg.getHeight(); i++) {  
			for(int j = 0; j < dimg.getWidth(); j++) {
				c = new Color(dimg.getRGB(j, i), true);
				newC = c.brighter().brighter();
				dimg.setRGB(j, i, new Color(newC.getRed(), newC.getGreen(), newC.getBlue(), c.getAlpha()).getRGB());  
			}  
		}  
		return dimg;
	}
	
	public static int getRack(int loc) {
		return (loc >> 24) & 0xFF;
	}
	
	public static int getSection(int loc) {
		return (loc >> 16) & 0xFF;
	}
	
	public static int getColumn(int loc) {
		return (loc >> 8) & 0xFF;
	}
	
	public static int getRow(int loc) {
		return loc & 0xFF;
	}
	
	public static int getLoc(int rack, int section, int column, int row) {
		return (rack << 24) + (section << 16) + (column << 8) + row;
	}
}