//Author: ^-^Veerle^-^
import java.awt.Toolkit;
import java.awt.Image;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.File;
import java.io.IOException;
import java.io.FileNotFoundException;
import javax.swing.ImageIcon;

public abstract class dataManager
{
	
	public static ImageIcon createImageIcon (Object parentClass, String strFile, String strDes) throws Exception
	{
		return new ImageIcon(Toolkit.getDefaultToolkit().createImage(getFileByteArray(parentClass, strFile)), strDes);
	}
	
	public static ImageIcon createImageIcon (File imageFile, String strDes) throws Exception
	{
		return new ImageIcon(Toolkit.getDefaultToolkit().createImage(getFileByteArray(imageFile)), strDes);
	}
	
	public static ImageIcon createImageIcon (byte[] imageData, String strDes)
	{
		return new ImageIcon(Toolkit.getDefaultToolkit().createImage(imageData), strDes);
	}
	
	public static Image createImage (Object parentClass, String strFile) throws Exception
	{
		return Toolkit.getDefaultToolkit().createImage(getFileByteArray(parentClass, strFile));
	}
	
	public static Image createImage (File imageFile) throws Exception
	{
		return Toolkit.getDefaultToolkit().createImage(getFileByteArray(imageFile));
	}
	
	public static Image createImage (byte[] imageData)
	{
		return Toolkit.getDefaultToolkit().createImage(imageData);
	}
	
	private static byte[] readInStream (BufferedInputStream inStream) throws Exception
	{
		
		byte[] buff = null;
		
		try
		{
			
			buff = new byte[inStream.available()];
			inStream.read(buff);
			inStream.close();
			
		}
		catch (IOException ex)
		{
			throw new Exception("Error when trying to read the file into a byte array\n" + ex.getMessage());
		}
		
		return buff;
		
	}
	
	public static byte[] getFileByteArray (Object parentClass, String strFile) throws Exception
	{
		
		BufferedInputStream inStream = null;
		
		try
		{
			inStream = new BufferedInputStream(parentClass.getClass().getResourceAsStream(strFile));
		}
		catch (NullPointerException ex)
		{
			throw new Exception("Could not open file\n" + strFile + "\nBecause the file either does not exist, or can not be read");
		}			
			
		return readInStream(inStream);		
		
	}
	
	public static byte[] getFileByteArray (File dataFile) throws Exception
	{
		
		BufferedInputStream inStream = null;		
		
		try
		{
			inStream = new BufferedInputStream(new FileInputStream(dataFile));
		}
		catch (SecurityException ex)
		{
			throw new Exception("Could not open file\n" + dataFile.getPath() + "\nBecause the security manager denied access");
		}
		catch (FileNotFoundException ex)
		{
			throw new Exception("Could not open file\n" + dataFile.getPath() + "\nBecause the file either does not exist, or can not be read");
		}
		
		return readInStream(inStream);		
		
	}
	
}