#include "structs.h"

using namespace std; 


// this function initialize the array of authors
// edit: instead of hard coded values, we took input from the file stream
void authors_init(string *a, int size_au, ifstream& fin){
	for (int i = 0; i < size_au; ++i)
	{
		fin >> a[i];
	}
}

// this funciton initialize ONE book within the book array, at index idx
// edit: instead of hard coded values, we took input from the file stream
void book_init_one_book(Book* book_arr, int idx, ifstream& fin){
	fin >> book_arr[idx].title;
	fin >> book_arr[idx].pages;
	fin >> book_arr[idx].num_authors;
	book_arr[idx].authors = new string [book_arr[idx].num_authors];
	authors_init(book_arr[idx].authors, book_arr[idx].num_authors, fin);
}

//this function initialize the ENTIRE array of books
// edit: instead of hard coded values, we took input from the file stream
void book_init (Book* book_arr, int size, ifstream& fin) {
	for (int i = 0; i < size; ++i)
	{
		//initialize book_arr[i]
		fin >> book_arr[i].title;
		fin >> book_arr[i].pages;
		fin >> book_arr[i].num_authors;
		book_arr[i].authors = new string [book_arr[i].num_authors];

		//initailize the authors of book_arr[i]
		authors_init(book_arr[i].authors, book_arr[i].num_authors, fin); 
		
	}
}

//print a single book object
void print_book (Book &b){
	cout << "----------------" << endl;
	cout << "Pages: " << b.pages << endl;
	cout << "Title: " << b.title << endl;
	for (int i = 0; i < b.num_authors; ++i)
	{
		cout << "Author " << i+1 << ": ";
		cout << b.authors[i] << endl;
	}
	cout << "----------------" << endl;
}

//print a single book object
void print_book_to_file (Book &b, ofstream& fout){
	fout << "----------------" << endl;
	fout << "Pages: " << b.pages << endl;
	fout << "Title: " << b.title << endl;
	for (int i = 0; i < b.num_authors; ++i)
	{
		fout << "Author " << i+1 << ": ";
		fout << b.authors[i] << endl;
	}
	fout << "----------------" << endl;
}

//free the dynamic memory
void delete_books(Book* &arr, int size){
	for (int i = 0; i < size; ++i)
	{
		delete [] arr[i].authors;
		arr[i].authors = nullptr;
	}

	delete [] arr;
	arr = nullptr;
	cout << "inside delete: " << arr << endl;
	
}