/**
 * CommandLineArgsTest.java
 *
 * @author Jeff Ondich
 *
 * Shows a brief example of how to use simple command-line arguments to determine
 * the behavior of your program.  Plunder and modify as you wish.
 */

import java.io.*;
import java.awt.*;

public class ImageMultiProcessorTest
{
    public static void main( String[] args ) throws IOException
    {
        // Make sure there are at least two command-line arguments (one for the
        // name of the image file, and one for the particular operation to perform).
        if( args.length < 2 )
        {
            printUsageStatement();
            return;
        }


        // Create the image.
        ImageMultiProcessor image = new ImageMultiProcessor( args[0] );
        image.show( "Original", 10, 10 );


        // Depending on the command-line arguments, modify the image
        // in some way.
        if( args[1].equals( "red" ) )
        {
            image.removeGreenAndBlue();
        }
        else if( args[1].equals( "green" ) )
        {
            image.removeRedAndBlue();
        }
        else if( args[1].equals( "crop" ) )
        {
            if( args.length == 6 )
            {
                int rowStart = Integer.parseInt( args[2] );
                int rowStop = Integer.parseInt( args[3] );
                int colStart = Integer.parseInt( args[4] );
                int colStop = Integer.parseInt( args[5] );

                if( !image.crop( rowStart, rowStop, colStart, colStop ) )
                {
                    System.out.println( "The specified row/column information does not fit within this image." );
                }
            }
            else
                printUsageStatement();
        }
        else if( args[1].equals( "gray" ) )
        {
            image.gray();
        }
        else if( args[1].equals( "mirror" ) )
        {
            image.mirror();
        }
        else
        {
            printUsageStatement();
        }


        // Display the resulting image.
        image.show( "New version", 510, 10 );
    }


    private static void printUsageStatement()
    {
        System.out.println( "" );
        System.out.println( "Usage:" );
        System.out.println( "java CommandLineArgsTest imagefile red -- shows the red component of the image" );
        System.out.println( "java CommandLineArgsTest imagefile green -- shows the green component of the image" );
        System.out.println( "java CommandLineArgsTest imagefile gray -- converts the image to grayscale" );
        System.out.println( "java CommandLineArgsTest imagefile mirror -- creates a left-to-right mirror image" );
        System.out.println( "java CommandLineArgsTest imagefile crop rowStart rowStop colStart colStop -- crops the image as directed by the specified integers" );
        System.out.println( "" );
    }
}