//Produced by Jonathan Slotter
// Assignment 6 is made to get book(s) from a user and catalog them based on some different information the user inputs.

import java.io.*;
import java.util.Scanner;
public class AssignmentSix1
{
  public static void main(String [] args) throws IOException
  {
    Scanner input = new Scanner(System.in);
    Scanner keyboard = new Scanner (System.in);

    final int NUMBERS = 20; // Maximum number of books the user can enter
    String [] ISBNList = new String[NUMBERS]; //Array for ISBN
    String [] firstNameList = new String[NUMBERS];
    String [] lastNameList = new String[NUMBERS];
    String [] titleList = new String[NUMBERS];
    String [] publisherList = new String[NUMBERS];
    double [] priceList = new double[NUMBERS];
    int [] quantityList = new int[NUMBERS];
    int index = 0;




    String isbn = "";
    String firstName;
    String lastName;
    String title;
    String publisher;
    double price;
    int quantity;
    String ascendingISBN = "";
    String ascendingAuthor = "";

    System.out.println("Enter the information needed to complete the list for the books. Enter quit into the ISBN number when finished.");

	System.out.print("Enter the name of the file you would like for ascending ISBN number: ");
		ascendingISBN = keyboard.nextLine();

		File fileISBN = new File(ascendingISBN);
		File fileAuthor = new File(ascendingAuthor);

		if (fileISBN.exists())
		{
			System.out.println("This file already exists, please choose another");
			System.out.print("Enter the name of the file you would like for ascending ISBN number: ");
			ascendingISBN = keyboard.nextLine();
			fileISBN = new File(ascendingISBN);
		}


		System.out.print("Enter the name of the file you would like for ascending author names: ");
		ascendingAuthor = keyboard.nextLine();
		fileAuthor = new File(ascendingAuthor);

		if (fileAuthor.exists())
		{
			System.out.println("This file already exists, please choose another");
			System.out.print("Enter the name of the file you would like for ascending author names ");
			ascendingAuthor = keyboard.nextLine();
			fileAuthor = new File(ascendingAuthor);
		}


    while (isbn != "quit")
    {
      System.out.print("What is the ISBN number for the book? ");
      isbn = keyboard.next();
      ISBNList[index]=isbn;

      if(isbn.equals("quit"))
      {
        break;
      }

      System.out.print("What is the authors first name? ");
      firstName = keyboard.next();
      firstNameList[index] = firstName;
      if (firstName.length() < 1)
      {
        System.out.print("You did not enter a valid input, please try again: ");
        firstName = keyboard.next();
        firstNameList[index] = firstName;
      }

      System.out.print("What is the authors last name? ");
      lastName = keyboard.next();
      lastNameList[index] = lastName;
      if (lastName.length() < 1)
      {
        System.out.print("You did not enter a valid input, please try again: ");
        lastName = keyboard.next();
        lastNameList[index] = lastName;
      }

      System.out.print("What is the title for the book? ");
      title = keyboard.next();
      titleList[index] = title;

      System.out.print("Who is the publisher for the book? ");
      publisher = keyboard.next();
      publisherList[index] = publisher;
      if (publisher.length() < 2)
      {
        System.out.print("You did not enter a valid input, please try again: ");
        publisher = keyboard.next();
        publisherList[index] = publisher;
      }

      System.out.print("What is the price of the book? ");
      price = keyboard.nextDouble();
      priceList[index] = price;

      System.out.print("How many books do you have? ");
      quantity = keyboard.nextInt();
      quantityList[index] = quantity;

      index = (index + 1);
    }


	PrintWriter outputFileISBN = new PrintWriter(ascendingISBN);

	for (int i = 0; i < index; i++)
		{
			outputFileISBN.println(ISBNList[i] + "\r\n" + lastNameList[i] + ", " + firstNameList[i] + "\r\n" + titleList[i] + "\r\n" + publisherList[i] +"\r\n" + priceList[i] + "\r\n" + quantityList[i] + "\r\n");
		}


	outputFileISBN.close();

	PrintWriter outputFileAuthor = new PrintWriter(ascendingAuthor);

	for (int i = 0; i < index; i++)
	{
		outputFileAuthor.println(lastNameList[i] + "," + firstNameList[i] + "\r\n" + title[i] + "\r\n " + ISBNList[i] + "\r\n" + priceList[i] + "\r\n" + publisherList[i] +"\r\n" + priceList[i] + "\r\n" + quantityList[i] + "\r\n");
	}

	outputFileAuthor.close();

    System.exit(0);
  }



	public static int[] sortArrayISBN(String[] ISBNList, int index)
	{
		int startScan, count, minIndex;
		String minValue;
		int [] ISBNSort = new int[index];

		for (int i = 0; 0 < count; i++)
		{
			ISBNSort[i] = i;
		}

		for(startScan = 0; startScan < (ISBNList.length - 1); startScan++)
		{
			minIndex = startScan;
			minValue = ISBNList[startScan];
			for(count = startScan + 1; count < ISBNList.length; count++)
			{
				if (ISBNList[count].compareTo(minValue) < 0)
				{
					minValue = ISBNList[count];
					minIndex = count;
				}
			}
			ISBNList[minIndex] = ISBNList[startScan];
			ISBNList[startScan] = minValue;
		}
		return ISBNSort;
	}

}