// CSE 00au HW3 Starter header file.
//
// Inventory.h - header file for Inventory class
// 

#ifndef INVENTORY_H
#define INVENTORY_H

#include "BookInfo.h"

//
// This class is used to hold a list of book.  There is no maximum
// number of books.
//
class Inventory {
 public:

  // construct an empty inventory that can hold 4 books
  Inventory();

  // free any memory held by this inventory
  ~Inventory();

  // return the number of books in this Inventory list.
  int numBooks() const;

  // store in b information about the i'th book in the list.
  // if there is no such book, store in b a BookInfo object 
  // with book_genre ERROR and 0 copies.
  void getBook(int i, BookInfo &b);
  
  // Inserts a copy of book b into this list.  Returns true if successful, false
  // if unable to allocate enough memory to hold the modified list with b added
  bool insert(const BookInfo b);
  
  // Update this Inventory to reflect a sale of n copies of the book
  // with the given title. Return the number of copies of t
  // remaining, and remove the book from this Inventory if the last
  // copies were sold.  If num is greater than the number of copies
  // available, sell all copies.
  int sell(const int num, const string title);

  // Copy all books by given author to subinventory
  void author_search(const string &author, Inventory &subinv);

  // Copy all books with given genre to subinventory
  void genre_search(book_genre genre, Inventory &subinv);

  // return information for the book with given title.  If there is no such
  // book in stock, return a BookInfo entry with a null string in the title
  BookInfo title_search(string title);
  
  // sort the books by author then by title
  void sort();
  
  // print all book entries to cout in their current order in this Inventory
  void print();

 private:
  /////////////////////////////////////////////////////////////////
  ///
  /// Define all the private data (and methods) here as needed.
  ///
  /////////////////////////////////////////////////////////////////
};


#endif