#include "browserhistory.h"
#include <iostream>
#include <string>



BrowserHistory::BrowserHistory(string default_url)
{
	head = new Node;
	head->url = default_url;
	head->next = nullptr;
	head->prev = nullptr;
	tail, current = head;
}
string BrowserHistory::current_url()
{
	return current->url;
}
void BrowserHistory::go_to_url(string url)
{
	Node* temp = new Node;
	temp->prev = current;
	temp->next = nullptr;
	temp->url = url;
	current->next = temp;
	tail, current = temp;
}
void BrowserHistory::back()
{
	if(current->prev != nullptr)
		current = current->prev;
}
bool BrowserHistory::can_go_back()
{
	if (current->prev != nullptr)
		return true;
	else
		return false;
}
int BrowserHistory::past_url_count()
{
	Node* temp;
	temp = current;
	int count = 0;
	while (temp->prev != nullptr)
	{
		count += 1;
		temp = temp->prev;
	}
	return count;
}
void BrowserHistory::forward()
{
	if (current->next != nullptr)
		current = current->next;
}
bool BrowserHistory::can_go_forward()
{
	if (current->next != nullptr)
		return true;
	else
		return false;
}
int BrowserHistory::future_url_count()
{
	Node* temp;
	temp = current;
	int count = 0;
	while (temp->next != nullptr)
	{
		count += 1;
		temp = temp->next;
	}
	return count;
}