import java.util.Scanner;
import java.util.*;

public class SequenceTest {
   public static void main(String [] args) {
      System.out.println("Hello");
      Scanner in = new Scanner(System.in);

      DoubleArraySeq sequenceA = new DoubleArraySeq();
      DoubleArraySeq sequenceB = new DoubleArraySeq(5);
      int input = -1;
      double element;
      String activeSeq = "A";

      while(input != 15){
         // only display options first time
         if (input == -1) {
            System.out.println("1. Print the sequences of A and B ");
            System.out.println("2. Report the capaciy of A and B ");
            System.out.println("3. Report if A and B are equal ");
            System.out.println("4. Change the active sequence (default is A) ");
            System.out.println("5. Add a number to the front of a sequence ");
            System.out.println("6. Set the current element location ");
            System.out.println("7. Add a number before the current element ");
            System.out.println("8. Add a number after the current element ");
            System.out.println("9. Add a number to the end of a sequence ");
            System.out.println("10. Add sequence B to end of A ");
            System.out.println("11. Delete a number at a certain index ");
            System.out.println("12. Delete the first number from the sequence ");
            System.out.println("13. Display a number at a certain index ");
            System.out.println("14. Display the last element in the sequence ");
            System.out.println("15. Quit ");
         }
         System.out.print("Please enter the number: ");
         try {
            input = in.nextInt();
         }
         catch (InputMismatchException e) {
            System.out.println(e);
         }

         switch (input){
            case 1:
               try {
                  System.out.println("Sequence A: " + sequenceA);
               }catch (IllegalStateException e) {
                   System.out.println("Sequence A is empty");
               }try {
                  System.out.println("Sequence B: " + sequenceB);
               }catch (IllegalStateException e) {
                  System.out.println("Sequence B is empty");
               }
              break;

            case 2:
               System.out.println("Sequence A capacity : " + sequenceA.getCapacity());
               System.out.println("Sequence B capacity : " + sequenceB.getCapacity());
               break;

            case 3:
               if(sequenceA.equals(sequenceB))
                  System.out.println("Sequence A equals to Sequence B");
               else
                  System.out.println("Sequence A does not equal to Sequence B");
               break;

            case 4:
                if(activeSeq.equals("A"))
                   activeSeq = "B";
                else
                   activeSeq = "A";
               System.out.println("Now your active sequence is " + activeSeq);
               break;

            case 5:
               System.out.print("Please enter the element to add: ");
               element = in.nextDouble();
               if (activeSeq.equals("A"))
                  sequenceA.addFront(element);
               else
                  sequenceB.addFront(element);
               System.out.println("Added " + element + " to the front of " + activeSeq);
               break;

            case 6:
               System.out.print("Please enter current: ");
               int current = in.nextInt();
               try {
                  if (activeSeq.equals("A"))
                     sequenceA.setCurrent(current);
                  else
                     sequenceB.setCurrent(current);
                  System.out.println("Updated current index for sequence " + activeSeq);
               }
               catch (IllegalStateException e) {
                  System.out.println(e);
               }
               break;

            case 7:
               System.out.print("Please enter the element to add: ");
               element = in.nextDouble();
               try {
                  if (activeSeq.equals("A"))
                     sequenceA.addBefore(element);
                  else
                     sequenceB.addBefore(element);
                  System.out.println("Added element " + element + " to " + activeSeq);
               }
               catch (IllegalStateException e) {
                  System.out.println(e);
               }
               break;

            case 8:
               System.out.print("Please enter the element to add: ");
               element = in.nextDouble();
               try {
                  if (activeSeq.equals("A"))
                     sequenceA.addAfter(element);
                  else
                     sequenceB.addAfter(element);
                  System.out.println("Added element " + element + " to " + activeSeq);
               }
               catch (IllegalStateException e) {
                  System.out.println(e);
               }
               break;

            case 9:
               System.out.print("Please enter the element to add: ");
               element = in.nextDouble();
               try {
                  if (activeSeq.equals("A")) {
                     if (sequenceA.size() != 0)
                        sequenceA.setCurrent(sequenceA.size());
                     sequenceA.addAfter(element);
                  } else {
                     if (sequenceB.size() != 0)
                        sequenceB.setCurrent(sequenceB.size());
                     sequenceB.addAfter(element);
                  }
                  System.out.println("Added element " + element + " to the end of " + activeSeq);
               }
               catch (IllegalStateException e) {
                  System.out.println(e);
               }
               break;

            case 10:
               sequenceA.addAll(sequenceB);
               System.out.println("Added sequence B to the end of A");
               break;
            case 11:
              int nth = 0;
              System.out.println("Please enter the nth number you want to delete.");
              try {
                 nth = in.nextInt();
              }
              catch (InputMismatchException e) {
                 System.out.println(e);
              }
              if(activeSeq.equals("A")){
                 sequenceA.getElement(nth);
                 sequenceA.removeCurrent();
              }else{
                 sequenceB.getElement(nth);
                 sequenceB.removeCurrent();
              }
              break;

             case 12:
               if(activeSeq.equals("A"))
                   sequenceA.removeFront();
                else
                   sequenceB.removeFront();
                System.out.println("Removed the last element from " + activeSeq);
                break;


            case 13:
               System.out.print("Please enter index: ");
               int index = in.nextInt();
               try {
                  if (activeSeq.equals("A"))
                     System.out.println("Sequence A at index " + index + " : " + sequenceA.getElement(index));
                  else
                     System.out.println("Sequence B at index " + index + " : " + sequenceB.getElement(index));
               }
               catch (IllegalStateException e) {
                  System.out.println(e);
               }
               break;

            case 14:
               try {
                  double last = (activeSeq.equals("A")) ? sequenceA.getElement(sequenceA.size()) : sequenceB.getElement(sequenceB.size());
                  System.out.println("The last element is " + last);
               }
               catch (IllegalStateException e) {
                  System.out.println("The selected sequence is empty");
               }
               break;

         }


      }


      System.out.println("Have a nice day");


   }


}