#ifndef BOOKLIST_H
#define BOOKLIST_H

#include <string>
#include <map>
using namespace std;

class Book 
{
    private:
        string title;
        string author;
        string isbn;
        string price;
    public:
        Book() :
            price("0.0") {}        
        Book(string t, string a, string i, string p) :
            title(t), author(a), isbn(i), price(p) {}          
        
        string getTitle()  const {return title;}
        string getAuthor() const {return author;}
        string getIsbn()   const {return isbn;}
        string getPrice()  const {return price;}      
       
}; 

class BookCollection
{
    private:
        map<string, Book> bookList; 
        string notFound;
        string filename; 
            
    public:
        BookCollection() :
             notFound("Title Not Found"), filename("books.txt") {loadData();}
        bool addBook(const Book & b);
        Book findBook(const string & isbn) const;
        bool removeBook(const string & isbn);
        void print(ostream & os) const;
        int size() const {return bookList.size();} 
        bool loadData();       
        void saveData();
};

// Overloaded insertion operator to print out all info on a book.
ostream& operator<<(ostream & os, const Book & b);  
//Check to see if an Isbn number is valid
bool isValid(const string & isbn);
// Helper function used by isValid
void copyNoHyphen(const string & isbn, string & copy);      

#endif