#include "part_3.h"
#include <stdlib.h>
#include <stdio.h>
#include <time.h>

Liste * create_list() {
    Liste * list = malloc(sizeof(Liste));
    list->nb_elements_ = 0;
    return list;
}

int list_length(Liste list) {
    return list.nb_elements_;
}

void append(Liste * list, int val) {
    Element * el = malloc(sizeof(Element));
    el->val_ = val;
    el->prev_ = list->tail_;
    
    if (list->tail_ != NULL) {
        list->tail_->next_ = el;
    }
    list->tail_ = el;
    list->nb_elements_ += 1;
    if (list->nb_elements_==1) {
        list->head_ = el;
    }
}

void append_head(Liste * list, int val) {
    Element * el = malloc(sizeof(Element));
    
    list->head_->prev_ = el;
    list->head_ = el;
    list->nb_elements_ += 1;
}

int first_value(Liste * list) {
    return list->head_->val_;
} 

int last_value(Liste * list) {
    return list->tail_->val_;
}

void print_list(Liste * list) {
    if (list->head_ == NULL) {
        printf("[]\n");
        return;
    }
    Element* current_el = list->head_;
    printf("[");
    printf("%lu", (unsigned long)current_el);
    while (current_el != NULL) {
        printf("%d, ", current_el->val_);
        current_el = current_el->next_;
    }
    printf("]\n");
}

int main(int argc, char *argv[])
{
    Liste * list = create_list();

    append(list, 69);

    print_list(list);
    return 0;
}