#include "LLDeluxe.h"

LLDeluxe::LLDeluxe()
{
    first = new Node('\0');
    first -> set_next(new Node('~'));
    count = 0;
    before = first;
    current = first -> get_next();
}

void LLDeluxe::add_before(char x)
{
    current = new Node(x);
    current -> set_next(before -> get_next());
    before -> set_next(current);
    count++;
}

bool LLDeluxe::at_first()
{
    return first == before;
}

bool LLDeluxe::at_last()
{
    return current -> get_item() == '~';
}

void LLDeluxe::display_all()
{
    if (count > 0)
        for(move_first(); !at_last(); move_next())
            current -> display();
    cout << endl;
}

char LLDeluxe::get_current_item()
{
    if (count > 0)
        return current -> get_item();
    else
        return '\0';
}

void LLDeluxe::find_insert_spot(char x)
{
    for(move_first(); !at_last(); move_next())
        if (current -> get_item() > x)
            break;
}

void LLDeluxe::find_item(char x)
{
    for(move_first(); !at_last(); move_next())
        if (current -> get_item() == x)
            break;
}

void LLDeluxe::move_first()
{
    if (count > 0)
    {
        before = first;
        current = first -> get_next();
    }
}

void LLDeluxe::move_last()
{
    while (!at_last())
    {
        before = current;
        current = current -> get_next();
    }
}

void LLDeluxe::move_next()
{
    if (!at_last())
    {
        before = current;
        current = current -> get_next();
    }
}

void LLDeluxe::remove()
{
    Node *temp;
    temp = current;
    if (count > 0)
    {
        before -> set_next(temp -> get_next());
        delete temp;
        count--;
    }
}