import import_ipynb

from item import *

def insert_item(start, value, method_container):
    print("Creating item: {}".format(value))
    item = Item(value, method_container)
    current = start
    previous = None

    while (current != None and not item.insert_before(current)):
        previous = current
        current = current._next

    if previous == None:
        start = item
    else:
        previous._next = item

    item._next = current

    return start

def remove_item(start, value):
    current = start
    previous = None

    while current != None and not current.value_equals(value):
        previous = current
        current = current._next

    if current == None:
        print("Item {} does not exist!".format(value))
    else:
        if previous == None:
            start = current._next
        else:
            previous._next = current._next

        print("Removed item: {}".format(value))

    return start

def remove_all(start):
    return None

def print_list(start):
    while start != None:
        start = start.print_get_next()

def print_iterator(start):
    if start == None:
        return
    for item in start:
        item.print_get_next()

def print_array(start):
    if start == None:
        return
    for i in range(len(start)):
        start[i].print_get_next()