package myIO;
import javax.swing.*;

public class IO {
  private static String outData = "";
  private static int rows;
  private static int cols;

  public static int getInt(String prompt) {
    String num = JOptionPane.showInputDialog(prompt);
      try {
        int intNum = Integer.parseInt(num);
        // Remove comment below to echo input
        // appendOutput(prompt + "> " + intNum);
        return (intNum);
      } catch (NumberFormatException e) {
        JOptionPane.showMessageDialog(null, "Invalid integer " + num + 
                                 " - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
        return getInt(prompt);
      }
  }

  public static int getInt(String prompt, 
                        int min, int max) {
    String num = 
           JOptionPane.showInputDialog(prompt);
      try {
        int intNum = Integer.parseInt(num);
        if (intNum >= min && intNum <= max) {
          return intNum;
        } else {
          JOptionPane.showMessageDialog(null, 
                intNum + " is out of range " + 
                min + " to " + max + 
                " - try again", "Error", 
                JOptionPane.ERROR_MESSAGE);
          return getInt(prompt, min, max);
        }
      } catch (NumberFormatException e) {
        JOptionPane.showMessageDialog(null, 
                "Invalid integer " + num + 
                " - try again", "Error",
                JOptionPane.ERROR_MESSAGE);
        return getInt(prompt, min, max);
      }
  }


    public static double getDouble(String prompt) {
    String num = JOptionPane.showInputDialog(prompt);
      try {
        return (Double.parseDouble(num));
      } catch (NumberFormatException e) {
        JOptionPane.showMessageDialog(null, "Invalid real number " + num + 
                                 " - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
        return getDouble(prompt);
      }
  }

    public static double getDouble(String prompt, int min, int max) {
    String num = JOptionPane.showInputDialog(prompt);
      try {
        double realNum = Double.parseDouble(num);
        if (realNum >= min && realNum <= max)
          return realNum;
        else {
          JOptionPane.showMessageDialog(null, realNum + " is out of range " +
                                 min + " to " + max + " - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
          return getDouble(prompt, min, max);
        }
      } catch (NumberFormatException e) {
        JOptionPane.showMessageDialog(null, "Invalid real number " + num + 
                                " - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
        return getDouble(prompt, min, max);
      }
  }

   public static String getString(String prompt) {
    return JOptionPane.showInputDialog(prompt);
   }

  public static char getChar(String prompt) {
    String str = JOptionPane.showInputDialog(prompt);
    if (str.length() == 1)
      return str.charAt(0);
    else {
       JOptionPane.showMessageDialog(null, str + 
                     " is not a single character - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
       return getChar(prompt);
    }
  }

    public static char getChar(String prompt, char low, char high) {
    String str = JOptionPane.showInputDialog(prompt);
    char tempCh = str.charAt(0);
    if (str.length() == 1 && tempCh >= low && tempCh <= high)
      return tempCh;
    else if (str.length() != 1) {
       JOptionPane.showMessageDialog(null, str + 
                       " is not a single character - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
       return getChar(prompt, low, high);
    } else {
       JOptionPane.showMessageDialog(null, tempCh + " is out of range " +
                                 low + " to " + high + " - try again",
                                 "Error", JOptionPane.ERROR_MESSAGE);
        return getChar(prompt, low, high);
    }
  }

  public static boolean getBoolean(String query) {
    int n = JOptionPane.showConfirmDialog(null, query, "Yes/No question",
                                     JOptionPane.YES_NO_OPTION);
    return (n == 0);
  }

  public static boolean getBoolean(String query, String trueAns, String falseAns) {
    Object[] options = {trueAns, falseAns};
    int n = JOptionPane.showOptionDialog(null, query, "Select " + trueAns +
                     " or " + falseAns,
          JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,
          null, options, options[0]);
    return (n == 0);
  }

  public static int getChoice(String query, String[] options) {
    int n = JOptionPane.showOptionDialog(null, query, 
             "Multiple choice question",
          JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE,
          null, options, options[0]);
    return n;
  }

  public static void displayResult(String message) {
        JOptionPane.showMessageDialog(null, message, "Program Results",
                                  JOptionPane.PLAIN_MESSAGE);
  }

  public static void displayResult(int i) {
    displayResult("" + i);
  }

  public static void displayResult(double d) {
    displayResult("" + d);
  }

  public static void displayResult(char c) {
    displayResult("" + c);
  }

  public static void displayResult(boolean b) {
    displayResult("" + b);
  }  

  public static void appendOutput(String nextMessage) {
     outData += nextMessage + "\n";
     //rows++;
     //cols = Math.max(cols, nextMessage.length());
  }

  public static void appendOutput(int i) {
    appendOutput("" + i);
  }

  public static void appendOutput(double d) {
    appendOutput("" + d);
  }

  public static void appendOutput(char c) {
    appendOutput("" + c);
  }

    public static void appendResult(String nextMessage) {
     outData += nextMessage + "\n";
     //rows++;
     //cols = Math.max(cols, nextMessage.length());
  }

  public static void appendResult(int i) {
    appendOutput("" + i);
  }

  public static void appendResult(double d) {
    appendOutput("" + d);
  }

  public static void appendResult(char c) {
    appendOutput("" + c);
  }
  public static void display() {

    JTextArea outputArea;
    outputArea = new JTextArea(20, 40);
    outputArea.setText(outData);
    outputArea.setEditable(false);
    JScrollPane scrollOut = new JScrollPane(outputArea,
                               ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
                   ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
      JOptionPane.showMessageDialog(null, scrollOut, "Program Results",
                                  JOptionPane.INFORMATION_MESSAGE);
  }

  public static void displayOutput() {
    display();
  }

  public static void clear() {
    outData = "";
  }

  public static void clearOutput() {
    outData = "";
  }  

}