// SanaBanana
   import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;		// all the multitudes of include files
   import java.text.DecimalFormat;
   import java.io.*;
   import java.io.File;
   import javax.swing.JFileChooser;
   

     
   public class check extends JFrame 
   {
     
     
      private Container content;		 //fields
      private JPanel north, center, south;
      private JLabel label0, label1, label2, label3, label4;
      private ActionListener li1, li2;
	  private Button button, increaser, decreaser;
	  private JTextField[] inputs;
	  private JLabel[][] labels;
	  private int[] shipped;
	  private int[] received;
	  private static int z;
	  private static check window;
	  private String fileName;
	  private String one="txt";
	  private boolean cancelled=true;
	  private File f;
	 private int todo=0; 
	
      public check()		//default-constructor
      {
      
	 
     	 content = getContentPane();
         content.setLayout(new BorderLayout());
      
         north = new JPanel();
         north.setLayout( new GridLayout(1, 1));
         content.add(north, BorderLayout.NORTH);
								// create labels	 
      label0= createAndAddLabel("SKU", SwingConstants.CENTER, north);	  
         label1= createAndAddLabel("Description",SwingConstants.CENTER, north);
		 label2= createAndAddLabel("Price",SwingConstants.CENTER, north);
      label3= createAndAddLabel("Sent",SwingConstants.CENTER, north);
      label4= createAndAddLabel("Received",SwingConstants.CENTER, north);
	// create center panel	 
	center = new JPanel();
	center.setLayout( new GridLayout(z,5));
	content.add(center, BorderLayout.CENTER);
      // create south panel
         south =  new JPanel();
         south.setLayout( new GridLayout (2, 1));
         content.add(south, BorderLayout.SOUTH);
		 
	JFileChooser fc= new JFileChooser(); 	//opens file box
         int x;
         String answer="";
      
        x=fc.showOpenDialog(null);
      
         if(x == JFileChooser.APPROVE_OPTION)  //if file opens
         {
            f= fc.getSelectedFile();
            answer= f.getName();
	    todo=1;
	}
	
	//checks if txt file			   
	int dot= answer.indexOf('.');
	String check= answer.substring(dot+1, answer.length());
	if(!check.equalsIgnoreCase(one))
	  todo=0;
				   
        
	if(todo==1)
	{
		
         try 
	 {
      
	  BufferedReader in  = new BufferedReader(new FileReader(f)); // file
	  reader
 
		 
	 String line=in.readLine();
	 if(line.equalsIgnoreCase("completed -  good")|| line.equalsIgnoreCase("completed - bad"))
 {
	JOptionPane.showMessageDialog(null, "Order already checked");
	 System.exit(0);
 }
 
	z=Integer.parseInt(line);
	System.out.println(z);
		 
	inputs= new JTextField[z];
	labels= new JLabel[z][4];
	shipped= new int[z];
		 
	 for(int q=0; q<z; q++)
		for(int y=0; y<5; y++)
		{
		if(y==4)
		inputs[q]= createAndAddTextField(0,"", center);
		else
		labels[q][y] =  createAndAddLabel(in.readLine(), center);
		if(y==3)
		shipped[q]=Integer.parseInt(labels[q][3].getText());
		}
			
		in.close();
			
			
		received= new int[z];
				
	}catch (IOException e) {}
		 
	 }
	 else
 	{
	 JOptionPane.showMessageDialog(null, "Correct file not selected");
	 System.exit(0);
 
 	}
	
	li1= new Handler(); // makes new action handler
				    
	button = createAndAddButton("SUBMIT",li1, south); // creates submit
	button
			  
      repaint();
      
      }
   
      private JTextField createAndAddTextField(int x, String s, JPanel j) // helper method for textfields
      {
         JTextField temp = new JTextField(x);
	temp.setText(s);
          j.add(temp);
         return temp;
      
      }
   
      private JLabel createAndAddLabel(String s, JPanel p)// helper method for labels
      {
         JLabel temp = new JLabel();
         temp.setText(s);
         p.add(temp);
         return temp;
      }
 
	private Button createAndAddButton(String s, ActionListener l, JPanel p) // helper method for
	buttons
      {
         Button temp = new Button(s);
        temp.addActionListener(l);
         p.add(temp);
         return temp;
      }
	  
      private JLabel createAndAddLabel(String s, int x,  JPanel p) // helper method for labels
      
      {
         JLabel temp = new JLabel();
         temp.setText(s);
         temp.setHorizontalAlignment(x);
         p.add(temp);
         return temp;
      }
   
   
   
   	//do not change the inner class definition in any way
      private class Handler implements ActionListener // helper method for action button
      {
         public void actionPerformed(ActionEvent e) 
         {
            input();
            process();
            output();
	System.exit(0);
         }
      }
   

	private void input()
      {
	  for(int o=0; o<z; o++)
	 received[o]=Integer.parseInt(inputs[o].getText());	// gets inputs from textfields
	 	  
	  }
   
      private  void process()
      {
      for(int p=0; p<z; p++)
	  if(received[p]!=shipped[p])	// checks for discrepencies
	  cancelled=false;
	  
	  
      }
   
	   		
      private void output()
     	 {
	 
	 if(cancelled==false)
 {
	 JOptionPane.showMessageDialog(null, "There was a discrepency. It has been reported");
	 
	 try {
            FileWriter outStream = new FileWriter (f);
			outStream.write("completed - bad" + "\n"); // writes out to file the result
					
			for(int x=0; x<z;x++)
		{
			for(int y=0; y<4; y++)
			outStream.write (labels[x][y].getText() + "\n");
			}
			outStream.close();
        } catch (IOException e) {
            //joptionpane error message should go here
            e.printStackTrace();
			
        }
	 
 }
	 else
 {
	 JOptionPane.showMessageDialog(null, "There were no discrepencies. Thank you");
	    
		try {
            FileWriter outStream = new FileWriter (f);
			outStream.write("completed -  good" + "\n"); // writes out to file the result
		
			
			for(int x=0; x<z;x++)
		{
			for(int y=0; y<4; y++)
			outStream.write (labels[x][y].getText() + "\n");
			}
			outStream.close();
        } catch (IOException e) {
            //joptionpane error message should go here
            e.printStackTrace();
			
        }
	  
		 
	  
  }
		
      }
   
   
   
      public static void main(String[] args) 
      {
      	//create graphics window
         window = new check();			// creates the mainwindow for program
            	//configure graphics window
         window.setSize(400,20+40*z);
         window.setLocation(100, 175);
         window.setTitle("Laura Ashley Shipment Check");
         window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     
      	//display graphics window
         window.setVisible(true);
      }
   }