// Terminal3.java
// Created by Shahein Tajmir
// May 15, 2005
// This class doesn't really encapsulate anything really well. It serves as a
// class that represents the terminal aspect of the requisite application.
// It has a buyBook and lookUp methods that do what it seems like they would do
// Necessary import statements of doom
import java.util.*;
import java.io.*;
import cs1.Keyboard;
import java.text.*;
public class Terminal
{
// Necessary Vectors of Doom
Vector availableBooks = new Vector(), purchasedBooks = new Vector();
// Menu Choice variable of doom
int mainMenuChoice;
// Constructor -
// Reads all books from inventory.dat and makes objects of them
public Terminal()
{
// Lovely tokenizer of doom
StringTokenizer token;
String line, file = "inventory.dat";
// Book temp data fields
String author, title, genre, binding, catalogNum;
int quantity, reorderPoint, tracker;
double wholesalePrice, retailPrice;
try // Error prevention of doom
{
FileReader fr = new FileReader(file);
BufferedReader inFile = new BufferedReader(fr);
line = inFile.readLine();
// Gets every line of the data file
while(line != null)
{
// Extract the info
token = new StringTokenizer(line, ";");
author = token.nextToken();
title = token.nextToken();
genre = token.nextToken();
binding = token.nextToken();
catalogNum = token.nextToken();
try // Prevent numberformat issues
{
quantity = Integer.parseInt(token.nextToken());
reorderPoint = Integer.parseInt(token.nextToken());
wholesalePrice = Double.parseDouble(token.nextToken());
retailPrice = Double.parseDouble(token.nextToken());
availableBooks.add(new Book(author, title, genre, binding,
catalogNum, quantity, reorderPoint,
wholesalePrice, retailPrice));
}
catch(NumberFormatException e)
{
System.out
.println("Number Format Exception - Usually a data type conflict");
}
line = inFile.readLine();
}
}
catch(FileNotFoundException e)
{
System.out.println("inventory.dat - File does not exist");
}
catch(IOException e)
{
System.out.println("Interrupted access to inventory.dat");
}
mainMenu();
}
//******************************************************************************
// Method that encapsulates the main menu functions
//******************************************************************************
public void mainMenu()
{
System.out.println("\t\t~~~~Shahein's Stacks (of Books)~~~~");
System.out.println("Main Menu:");
System.out.println("\t1) Buy Books");
System.out.println("\t2) Look Up Inventory");
System.out.println("\t3) Exit");
mainMenuChoice = Keyboard.readInt();
if(mainMenuChoice == 1)
buyBooks();
else if(mainMenuChoice == 2)
lookUp();
else if(mainMenuChoice == 3)
return;
}
//******************************************************************************
// Method that encapsulates all the code involved in buying books
//******************************************************************************
public void buyBooks()
{
int buyBookChoice = 0, catalogNum, place = 0;
String key;
Book[] tempArray = new Book[availableBooks.size()];
System.out.println("~~~~The Cash Register~~~~");
while(buyBookChoice != -1)
{
if(purchasedBooks.size() != 0)
{
System.out.println();
System.out.println("~~~~~~~~~~~~~~~Shopping Cart~~~~~~~~~~~~~~~~~:");
for(int i = 0; i < purchasedBooks.size(); i++)
{
Book temp = (Book) purchasedBooks.get(i);
System.out.println(temp.getTitle());
}
System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
System.out.println();
}
System.out.println();
System.out.println("\t1) Buy Book by Catalog Number");
System.out.println("\t2) Buy Book by Title");
System.out.println("\t3) Buy Book by Author");
System.out.println("\t4) Remove a Title");
System.out.println("\t5) Check Out");
System.out.println("\t6) Return to Main Menu");
buyBookChoice = Keyboard.readInt();
for(int i = 0; i < tempArray.length; i++)
{
tempArray[i] = (Book) availableBooks.get(i);
}
if(buyBookChoice == 1)
{
System.out.println("Type the Book's Catalog Number: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 0);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
0);
}
else if(buyBookChoice == 2)
{
System.out.println("Type the Book's Title: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 2);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
2);
}
else if(buyBookChoice == 3)
{
System.out.println("Type the Author's Name: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 1);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
1);
}
else if(buyBookChoice == 4)
{
System.out.println("Type the Title you'd like to remove: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 2);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
2);
if(place >= 0)
{
purchasedBooks.remove(tempArray[place]);
}
}
else if(buyBookChoice == 5)
{
checkOut();
buyBookChoice = -1;
}
else if(buyBookChoice == 6)
{
mainMenu();
buyBookChoice = -1;
}
if(place >= 0 && buyBookChoice != 4)
{
purchasedBooks.add(tempArray[place]);
}
else if(place < 0 && buyBookChoice != 4)
{
System.out.println("**************");
System.out.println("Book not found");
System.out.println("**************");
}
}
}
//******************************************************************************
// Method that encapsulates the junk on looking up books
//******************************************************************************
public Book lookUp()
{
int lookUpChoice = 0, place = 0;
String key;
Book[] tempArray = new Book[availableBooks.size()];
while(lookUpChoice != 3)
{
System.out.println("~~~~Inventory Looker Upper~~~~");
System.out.println("\t1) By Author");
System.out.println("\t2) By Title");
System.out.println("\t3) Return to Main Menu");
lookUpChoice = Keyboard.readInt();
for(int i = 0; i < tempArray.length; i++)
{
tempArray[i] = (Book) availableBooks.get(i);
}
if(lookUpChoice == 1)
{
System.out.println("Type the Author's Name: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 1);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
1);
System.out.println("Entries for " + key);
System.out.println();
if(place >= 0)
{
System.out.println("Title: " + tempArray[place].getTitle());
System.out.println("Retail Price: "
+ tempArray[place].getRetailPrice());
System.out.println("Quantity: "
+ tempArray[place].getQuantity());
System.out.println("Catalog Number: "
+ tempArray[place].getCatalogNum());
}
}
else if(lookUpChoice == 2)
{
System.out.println("Type the Book's Title: ");
key = Keyboard.readString();
MergeSort.sort(tempArray, 0, tempArray.length, 2);
place = BinarySearch.search(key, tempArray, tempArray.length - 1, 0,
2);
System.out.println();
System.out.println("Entries for " + key);
if(place >= 0)
{
System.out.println("Author: " + tempArray[place].getAuthor());
System.out.println("Retail Price: "
+ tempArray[place].getRetailPrice());
System.out.println("Quantity: "
+ tempArray[place].getQuantity());
System.out.println("Catalog Number: "
+ tempArray[place].getCatalogNum());
}
}
else if(lookUpChoice == 3)
{
mainMenu();
}
if(place <= 0)
{
System.out.println("**************");
System.out.println("Book not found");
System.out.println("**************");
}
System.out.println();
}
return tempArray[place];
}
//******************************************************************************
// Method that checks out and prints a receipt
//******************************************************************************
public void checkOut()
{
double sum = 0;
String choice;
DecimalFormat fmt = new DecimalFormat("0.##");
System.out.println();
System.out.println("~~~~Sales Receipt of Doom~~~~");
System.out.println();
for(int i = 0; i < purchasedBooks.size(); i++)
{
Book temp = (Book) purchasedBooks.get(i);
System.out.println(temp.getTitle() + "\n\t" + temp.getRetailPrice());
sum += temp.getRetailPrice();
}
System.out.println();
System.out.println("Subtotal: \t\t" + fmt.format(sum));
System.out.println("Tax: \t\t" + fmt.format(sum * .09));
System.out.println("Total: \t\t" + fmt.format(sum * 1.09));
System.out.println();
System.out.println("Return to Main Menu (Y or N): ");
choice = Keyboard.readString();
if(choice.equalsIgnoreCase("y"))
{
mainMenu();
purchasedBooks.clear(); // empties purchased vector
}
}
}