import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JOptionPane;


public class Controller{
    private View interfata;

    public Controller(View interfata){
        this.interfata = interfata;
        interfata.getBtnDoIt().addActionListener(new DoAction());

    }

    class DoAction implements ActionListener{

    public void actionPerformed(ActionEvent arg0) {
        if(arg0.getSource() == interfata.getBtnDoIt()){

            String from1 = interfata.getFrom1().getText();
            String from2 = interfata.getFrom2().getText();
            String from3 = interfata.getFrom3().getText();
            String from4 = interfata.getFrom4().getText();

            String to1   = interfata.getTo1().getText();
            String to2   = interfata.getTo2().getText();
            String to3   = interfata.getTo3().getText();
            String to4   = interfata.getTo4().getText();



            if(isValid(from1) && isValid(from2) && isValid(from3) && isValid(from4) && isValid(to1) && isValid(to2) && isValid(to3) && isValid(to4)){

                boolean cont=true;

                String temp;
                int ifrom1   = Integer.parseInt(from1);
                int ifrom2   = Integer.parseInt(from2);
                int ifrom3   = Integer.parseInt(from3);
                int ifrom4   = Integer.parseInt(from4);

                int ito1 = Integer.parseInt(to1);
                int ito2 = Integer.parseInt(to2);
                int ito3 = Integer.parseInt(to3);
                int ito4 = Integer.parseInt(to4);

                if (correctInput(ifrom1,ifrom2,ifrom3,ifrom4,ito1,ito2,ito3,ito4)){

                    try {
                        BufferedWriter out = new BufferedWriter(new FileWriter("result.txt"));

                    while(cont) {

                    temp = ifrom1+"."+ifrom2+"."+ifrom3+"."+ifrom4+"\n";
                    out.write(temp);
                    ifrom4++;
                    if(ifrom4==256){
                        ifrom4=0;
                        ifrom3++;
                    }
                    if (ifrom3==256){
                        ifrom3=0;
                        ifrom2++;
                    }
                    if (ifrom2==256){
                        ifrom2=0;
                        ifrom1++;
                    }
                    if( (ifrom1 == ito1) && (ifrom2 == ito2) && (ifrom3 == ito3) && (ifrom4 == ito4) ) {
                        temp = ifrom1+"."+ifrom2+"."+ifrom3+"."+ifrom4+"\n";
                        out.write(temp);
                        cont = false;
                        }

            }
                    out.close();
                    } catch (IOException e) {
                    }
            }


            }else JOptionPane.showMessageDialog(null, "Invalid input", "Error", JOptionPane.ERROR_MESSAGE);
            interfata.setLblstatus("Done!");
        }

    }

    }


    public boolean correctInput(int ifrom1, int ifrom2, int ifrom3, int ifrom4, int ito1, int ito2, int ito3, int ito4){
        boolean check=true;
        if(ifrom1 <= ito1){
            if(ifrom1 == ito1){
                if (ifrom2 <= ito2){
                    if(ifrom2 == ito2){
                        if(ifrom3 <= ito3){
                            if(ifrom3 == ito3){
                                if(ifrom4 <= ito4){

                                }else {
                                    JOptionPane.showMessageDialog(null, "Please verify the IP range!", "Invalid range", JOptionPane.ERROR_MESSAGE);
                                    check = false;
                                    }
                            }
                        }else {
                            JOptionPane.showMessageDialog(null, "Please verify the IP range!", "Invalid range", JOptionPane.ERROR_MESSAGE);
                            check = false;
                            }
                    }
                }else {
                    JOptionPane.showMessageDialog(null, "Please verify the IP range!", "Invalid range", JOptionPane.ERROR_MESSAGE);
                    check = false;
                    }
            }
        }else {
            JOptionPane.showMessageDialog(null, "Please verify the IP range!", "Invalid range", JOptionPane.ERROR_MESSAGE);
            check = false;
            }
        return check;
    }


    public boolean isValid(String arg){
        int test;
        try{
        test = Integer.parseInt(arg);
        }
        catch (NumberFormatException ex){
            return false;
        }
        if (test < 0 || test > 255) return false;
        else return true;
    }

}