//Library (Book Database)
#include <iostream.h>
#include <fstream.h>

ofstream outfile;
ifstream infile;

void addbook(), viewbook(), browse(), removebook(), bookcodekey();

int I;	//this is the letter i capitalized, meaning a roman numeral 1 -- the first choice;
int contquest;	//question to continue or quit (use 2 diff. #'s)
double inventory_count;	//get rid of this line after I figure out how to implement this information
char bookcode[3], title[31], author[31], ISBN[14], ISBN1[14];

main()
{
	cout << "Welcome to the Library." << endl;
	cout << "Select a # from the following: " << endl;
	cout << "1. Add a book"<<endl<<"2. View book information"<<endl<<"3. Browse books"<<endl<<"4. Remove a book"<<endl;
	cout << "5. Exit the Library"<<endl;
	cin >> I;
	switch(I)
	{
	case 1:
		addbook();
		break;
	case 2:
		viewbook();
		break;
	case 3:
		browse();
		break;
	case 4:
		removebook();
		break;
	case 5:
		return 0;
		break;
	default:
		cout << "Please type 1, 2, 3, 4, or 5 according to your selected option." <<endl<<"Try again."<<endl;
		return 0;
		break;
	}
	cout << "Thanks for using the Library." <<endl;
	return 0;
}
void addbook()
{
		cout <<endl<<"Please enter the title and author below."<<endl;
		cout <<	"Title: ";
		cin.ignore(31, '\n');
		cin.get(title, 31);
		cin.ignore(31, '\n');
		cout << "Author: ";
		cin.get(author, 31);
		cin.ignore(31, '\n');
		cout << "Please enter the 2-digit book code based on the following key: " <<endl<<
			"A. Fiction"<<endl<<"B. Nonfiction"<<endl<<endl<<"1. Best Seller"<<endl<<
			"2. Business"<<endl<<"3. Education"<<endl<<"4. Fantasy"<<endl<<
			"5. Humor"<<endl<<"6. Mystery"<<endl<<"7. Philosophy"<<endl;
		cin.get(bookcode, 3);
		cin.ignore(3, '\n');
		cout << "Please enter the ISBN: (X-XXX-XXXXX-X) ";
		cin.get(ISBN, 14);
		cin.ignore(14, '\n');

		outfile.open("BookList",ios::app);
		outfile <<ISBN<<endl;
		outfile <<title<<endl;
		outfile <<author<<endl;
		outfile <<bookcode<<endl;
		outfile.close();
		
		infile.open("BookCount",ios::in);	//Beginning of Book Counter
		if (infile)
		{
			infile >> inventory_count;
			if (inventory_count != 0)
			{
				inventory_count++;
				infile.close();
				outfile.open("BookCount",ios::out);
				outfile << inventory_count;
				outfile.close();
			}
			else
			{
				inventory_count = 1;
				infile.close();
				outfile.open("BookCount",ios::out);
				outfile << inventory_count;
				outfile.close();
			}
			cout <<endl<< inventory_count << " is the # of books in the library so far.\n";
			cout <<"This is path #1\n";	//Debug
			infile.close();
		}
		else
		{
			infile.close();
			outfile.open("BookCount", ios::out);
			if (inventory_count != 0)
				inventory_count++;
			else
				inventory_count = 1;
			outfile << inventory_count;
			cout <<endl<< inventory_count << " is the # of books in the library so far.\n";
			cout <<endl<< "This is path #2\n";	//Debug
			outfile.close();	//End of Book Counter
		}
}
void viewbook()
{
	cout <<endl<<"View a particular book:"<<endl;
	cout <<"Enter the ISBN (International Standard Book Number).\nInclude all dashes as follows: X-XXX-XXXXX-X" <<endl;
	cin.ignore(14, '\n');
	cin.get(ISBN1, 14);
	cin.ignore(14, '\n');
	infile.open("BookList",ios::nocreate);	//This only opens a previously created file
	if (!infile)
	{
		cout << "There are no books in the Library.\n"
			"You must first add a book before one can be viewed.\n\n";
		cin.ignore(50, '\n');
		main();
	}
	infile.get(ISBN,14);
	infile.ignore(20, '\n');
	cout <<"The ISBN as read from the file is: " <<ISBN<<endl;	//debug
	cout <<"The ISBN you entered is: "<<ISBN1<<endl;	//debug
	if (ISBN1 != ISBN)
	{
		cout << "Path 1.\n";	//Debugger
		infile.get(title, 31);
		infile.ignore(31, '\n');
		cout << "Title: " << title << endl;
		infile.get(author, 31);
		infile.ignore(31, '\n');
		cout << "Author: " << author << endl;
		infile.get(bookcode, 3);
		infile.ignore(3, '\n');
		cout << "Code: " << bookcode << endl;
		cout << "\nBook Code Key:"<<endl;
		bookcodekey();
		infile.close();
		cout << "\nView another book? (1 = yes, 2 = no / quit) ";
		cin >> contquest;
		cin.ignore(20, '\n');
		if (contquest == 1)
			viewbook();
	}
	else
	{
		cout << "Path 2.\n";	//Debugger
		main();
	}
}
void browse()
{
	cout << "Browse the library. "<<endl;
}

void removebook()
{
	cout << "Remove a book. "<<endl;
}

void bookcodekey()
{
	cout << "\tA. Fiction"<<endl<<"\tB. Nonfiction"<<endl<<endl<<"\t1. Best Seller"<<endl<<
		"\t2. Business"<<endl<<"\t3. Education"<<endl<<"\t4. Fantasy"<<endl<<
		"\t5. Humor"<<endl<<"\t6. Mystery"<<endl<<"\t7. Philosophy"<<endl;
}