import java.io.*;
import java.util.*;
import javax.swing.*;

/** A maze with two rats to eat the Brussel Sprouts.
 */
public class RatRace {
    
    /**
     * Start the Rat race game. if args != null, args[0] is
     * used as a path to start the JFileChooser in, when looking
     * for a maze to read in.
     */
    public static void main(String[] args) {
        char[][] b;
        try {// Read in a maze in b, using a JFileChooser
            
            if (args == null || args.length == 0) {
                b= getMap(null);
            }
            else {
                b= getMap(args[0]);
            }
        } catch (IOException e) {
            b= null;
        }
        
        if (b != null) {
            Maze maze= new Maze(b);
            MazeGUI mazeGUI= new MazeGUI(maze);
        }
    }
    
    
    /** Read a maze from a file given by a JFileChooser and return
     an array that contains the maze. Return null if it is not possible.
     If p is not null, use p as a path to start the JFileChooser.*/
    public static char[][] getMap(String p) throws IOException {
        // Write this method body
        
        return null;
    }
    
    /** Obtain a file name from the user using a JFileChooser)
     and return a reader that is linked to it. If p is not null
     (it can be), start the JFileChooser at the path given by p*/
    public static BufferedReader getReader(String p) throws IOException {
        JFileChooser jd;
        if (p == null) {
            jd= new JFileChooser();
        }
        else {
            jd= new JFileChooser(p);
        }
        jd.setDialogTitle("Choose input file");
        jd.showOpenDialog(null);
        return new BufferedReader(new FileReader(jd.getSelectedFile()));
    }
}