import java.awt.*;
import java.io.*;
import java.text.*;
import java.util.*;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import javax.swing.JLabel;

public class Inventory_Program6a extends JFrame
{
    // instance variables
    static int displayBooks = 0; // variable for actionEvents

    private JButton firstButton;
    private JButton previousButton;
    private JButton nextButton;
    private JButton lastButton;
    private JButton addButton;
    private JButton deleteButton;
    private JButton modifyButton;
    private JButton saveButton;
    private JButton searchButton;

    private JTextField bookTitleField;
    private JTextField itemNumberField;
    private JTextField unitsInStockField;
    private JTextField bookPriceField;
    private JTextField inventoryValueField;
    private JTextField bookAuthorField;
    private JTextField restockingFeeField;

    private JLabel bookTitleLabel;
    private JLabel itemNumberLabel;
    private JLabel unitsInStockLabel;
    private JLabel bookPriceLabel;
    private JLabel inventoryValueLabel;
    private JLabel bookAuthorLabel;
    private JLabel restockingFeeLabel;

    private JPanel display;
    private JPanel content;
    private JTextArea textArea;
    private JLabel label;

    // Declare an array of classes
    
    private Book2 myBook[];

    // method to sort inventory by book title
    public Book2[] sortBookInventory()
        {
            for(int i = 0; i < myBook.length; i++)
        {
                String bookTitle1 = myBook[i].getBookTitle();
                int min = i;
                String bookTitle = bookTitle1;
                    for(int j = i+1; j < myBook.length; j++)
            {
                    String bookTitle2 = myBook[j].getBookTitle();
                        if(bookTitle2.compareTo(bookTitle) < 0)
                {
                            min = j;
                            bookTitle = bookTitle2;
                        }
                    }
                if(!bookTitle.equals(bookTitle1))
        {
                    Book2 temp = myBook[i];
                    myBook[i] = myBook[min];
                    myBook[min] = temp;
               }
            }
                return myBook;
    } // end method sortBookInventory

    // constructor
    public Inventory_Program6a()
    {        
        double totalInventoryValue = 0.0;

        // Specify how many items are in the array
        // instantiate Book2 object
        myBook = new Book2[5];
        myBook[0] = new Book2("The Key Triology", 1, 25, 7.99, "Nora Roberts");
        myBook[1] = new Book2("The Shinning", 2, 15, 5.99, "Stephen King");
        myBook[2] = new Book2("Wild Acre", 3, 7, 4.99, "Phillipa Gregory");
        myBook[3] = new Book2("Dark Paradise", 4, 2, 12.99, "Tami Hoag");
        myBook[4] = new Book2("Dollhouse Murders", 5, 18, 2.95, "Betty Ren Wright");
            
        // call method sort book inventory for display
        sortBookInventory();

        for (int i = 0; i<5; i++)
        {

            // display the book title
            System.out.println("The book title is: " + myBook[i].getBookTitle());

            // display the item number
            System.out.println("The item number is: " + myBook[i].getItemNumber());

            // display the number of units in stock
            System.out.println("The number of units in stock is: " + myBook[i].getBookUnits());

            // display the price per book
            System.out.printf("The price of the book is: $%.2f\n", myBook[i].getBookPrice());

            // display the value of the inventory
            System.out.printf("The value of the inventory is: $%.2f\n", myBook[i].inventoryValue());

            // display the book author
            System.out.println("The book author is: " + myBook[i].getBookAuthor());

            // display the restocking fee
            System.out.println("Restock Fee: " + myBook[i].inventoryValue() * 0.05);

            // calculate total inventory value with restocking fee added
            totalInventoryValue += (myBook[i].inventoryValue() * 1.05);

            // insert blank line
            System.out.println();

        } // end for

        // display the total value of the inventory with the restocking fee
        System.out.printf("The total value of the book inventory including the restocking fee is: $%5.2f.\n",         

totalInventoryValue);

        // display the total value of the inventory excluding the restocking fee
        System.out.println("The total value of the book inventory is: " + totalInventoryValue());

        //JLabel constructor for logo
        Icon logo = new ImageIcon("C:/book.jpg");
        label = new JLabel(logo);
        label.setToolTipText("Joyce's Logo");
        
        // Create content panel, set layout
        content = new JPanel();
        content.setLayout(new FlowLayout());
        content.setLayout(new GridLayout(3,4));

        // create JPanel for array items
        display = new JPanel();
        display.setLayout(new FlowLayout());
        display.setLayout(new GridLayout(7,1));

        // create textArea
        textArea = new JTextArea(myBook[3]+"\n");

        // set window (JFrame) characteristics
        setLayout(new BorderLayout());
        getContentPane().add(new JScrollPane(display), BorderLayout.CENTER);
        getContentPane().add(content, BorderLayout.SOUTH);
        getContentPane().add(label, BorderLayout.NORTH);
        pack();
        setTitle("Book Inventory Program");
        setSize(400, 400); // set frame size
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        // initialize components    
        bookTitleField = new JTextField();
        bookTitleField.setText(myBook[displayBooks].getBookTitle()+"\n");
        bookTitleField.setEditable(false);

        itemNumberField = new JTextField();
        itemNumberField.setText(myBook[displayBooks].getItemNumber()+"\n");
        itemNumberField.setEditable(false);
    
        unitsInStockField = new JTextField();
        unitsInStockField.setText(myBook[displayBooks].getBookUnits()+"\n");
        unitsInStockField.setEditable(false);

        bookPriceField = new JTextField();
        bookPriceField.setText(myBook[displayBooks].getBookPrice()+"\n");
        bookPriceField.setEditable(false);

        inventoryValueField = new JTextField();
        inventoryValueField.setText(myBook[displayBooks].inventoryValue()+"\n");
        inventoryValueField.setEditable(false);

        bookAuthorField = new JTextField();
        bookAuthorField.setText(myBook[displayBooks].getBookAuthor()+"\n");
        bookAuthorField.setEditable(false);                

        restockingFeeField = new JTextField();
        restockingFeeField.setText(myBook[displayBooks].bookRestockingFee()+"\n");
        restockingFeeField.setEditable(false);    
            
        // initialize components
        firstButton = new JButton("First");
        content.add(firstButton);

        previousButton = new JButton("Previous");
        content.add(previousButton);

        nextButton = new JButton("Next");
        content.add(nextButton);

        lastButton = new JButton("Last");
        content.add(lastButton);

        addButton = new JButton("Add");
        content.add(addButton);

        deleteButton = new JButton("Delete");
        content.add(deleteButton);

        modifyButton = new JButton("Modify");
        content.add(modifyButton);

        saveButton = new JButton("Save");
        content.add(saveButton);

        searchButton = new JButton("Search");
        content.add(searchButton);

        // display JLabels and JTextFields on display panel
        display.add(new JLabel("Book Title: "));
        display.add(bookTitleField);

        display.add(new JLabel("Item Number: "));
        display.add(itemNumberField);

        display.add(new JLabel("Units in Stock: "));
        display.add(unitsInStockField);

        display.add(new JLabel("Book Price: "));
        display.add(bookPriceField);

        display.add(new JLabel("Inventory Value: "));
        display.add(inventoryValueField);
    
        display.add(new JLabel("Book Author: "));
        display.add(bookAuthorField);
    
        display.add(new JLabel("Restocking Fee: "));
        display.add(restockingFeeField);

        toString();

        // assign actionListener and actionEvent to firstButton
        firstButton.addActionListener(new ActionListener()
        {
        public void actionPerformed(ActionEvent event)
        {
            if (event.getActionCommand()== "First")
            {
            displayBooks = 0;
            }
        
        
        } // end firstButton actionEvent
        }); // end lastButton actionListener

        // assign actionListener and actionEvent to previousButton
        previousButton.addActionListener(new ActionListener()
        {
        public void actionPerformed(ActionEvent event)
        {
        if (event.getActionCommand()== "Previous")
        displayBooks--;
        if (displayBooks < 0)
        {
        displayBooks = 0;
            if (displayBooks == 0)
            {
            displayBooks = displayBooks = myBook.length-1;
            }
        }
        } // end previousButton actionEvent
        }); // end previousBUtton actionListener

        // assign actionListener and actionEvent to nextButton
        nextButton.addActionListener(new ActionListener()
        {
        public void actionPerformed(ActionEvent event)
        {
        if (event.getActionCommand()== "Next")
        displayBooks++;
        if (displayBooks >= myBook.length)
        {
        displayBooks = myBook.length-1;
            if (displayBooks == myBook.length-1)
            {
            displayBooks = 0;
            }
        }
        } // end nextButton actionEvent
        }); // end nextButton actionListener

        // assign actionListener and actionEvent to lastButton
        lastButton.addActionListener(new ActionListener()
        {
        public void actionPerformed(ActionEvent event)
        {
        if (event.getActionCommand()== "Last")
        {
        displayBooks = myBook.length-1;
        }
        } // end lastButton actionEvent
        }); // end lastButton actionListener


        // assign actionListener and actionEvent to saveButton
        saveButton.addActionListener(new ActionListener()
        {
        public void actionPerformed(ActionEvent event)
        {
        if (event.getActionCommand()== "Save")
        {
            FileOutputStream out;
            PrintStream p;
            try
            {
                String strDirectory = "c:/data";
                new File(strDirectory).mkdir();
                out = new FileOutputStream ("C:/data/Inventory_Program6a.dat");
                p = new PrintStream(out);
                    for (int i = 0; i<= 5 - 1; i++)
                    {
                        p.println("Book Title: " + myBook[i].getBookTitle()+"\n");
                        p.println("Item Number: " + myBook[i].getItemNumber()+"\n");
                        p.println("Book Units: " + myBook[i].getBookUnits()+"\n");
                        p.println("Book Price: " + myBook[i].getBookPrice()+"\n");
                        p.println("Inventory Value: " + myBook[i].inventoryValue()+"\n");
                        p.println("Book Restocking Fee: " + myBook[i].bookRestockingFee()+"\n");
                        p.println("");
                    }
                p.close();
                }
            catch (Exception e)
            {
                System.out.println("error");
            }
            }
            toString();
        } // end lastButton actionEvent
        }); // end lastButton actionListener
    } // end constructor

    // method to calculate the value of the entire inventory
    public double totalInventoryValue()
    {
        double totalInventoryValue = 0.00;

        for ( int counter = 0; counter < myBook.length; counter++ )

            totalInventoryValue += myBook[counter].inventoryValue();

        return totalInventoryValue;

    } // end method totalBookValue

    // main method begins execution of Java application
    public static void main( String args [])
    {
        new Inventory_Program6a();
        //create JFrame
        Inventory_Program6a inventory = new Inventory_Program6a();
        inventory.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        inventory.setVisible(true);        

    } // end method main

} // end class Inventory_Program6a