#include "a_train.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct car* add_car(struct car* first,const char* target) {
    struct car* last = first;
    struct car* newcar* = calloc(1, sizeof(struct car));
    strcpy(newcar->value, target);
    if (last != NULL){
        struct car* current = last;
        while(current->next != NULL){
            current = current->next
        }
        current->next = newcar;
    } else{
        last = newcar;
        return last;
    }
    return first;
}

void print_train(struct car* first) {
    // if(first != NULL){
    //     struct car* current = first;
    //     while(current->next != NULL){
    //         printf("%s\n", current->value);
    //         current = current->next;
    //     }
    // }
}

void cancel_train(struct car* first) {
    // struct car* current = first;
    // while(first != NULL){
    //     current = current->next;
    //     free(first);
    //     first = current;
    // }
}


struct car* clear_train(struct car* first, const char* target) {
    // if (first = NULL){
    //     return NULL;
    // }
    // struct car* current = first, new_first = first;
    // if (first != NULL){
    //     if(strcmp(first->destination, target) == 0){
    //         new_first = new_first->next;
    //         free(first);
    //         first = new_first;
    //     }
    // }

    // while (first->next != NULL) {
    //     current = first->next;
    //     if (strcmp(current->destination, target) == 0) {
    //         first->next = current->next;
    //         free(current);
    //     } else {
    //         first = current;
    //     }
    // }
    // return new_first;
}