#include <string.h>
#include <assert.h>

#include "utils.h"
#include "log.h"

void fixed_num_array_init(struct fixed_num_array *array)
{
    memset(array, 0, sizeof(fixed_num_array));
    array->num = 0;
    array->size = sizeof(array->elems) / sizeof(array->elems[0]);
}

void fixed_num_array_add_elem(struct fixed_num_array *array, int elem)
{
    if (array->num < array->size)
    {
        array->elems[array->num] = elem;
        array->num++;
    }
    else
    {
        LOG_ERROR("%s: fixed num array add elem too much !!!", LOG_TAG_UTILS);
    }
}

void fixed_num_array_del_elem(struct fixed_num_array *array, int elem)
{
    for (int i = 0; i < array->num; i++)
    {
        if (array->elems[i] == elem)
        {
            if (i + 1 != array->size)
            {
                memmove(&(array->elems[i]), &(array->elems[i + 1]), sizeof(array->elems[0]) * (array->num - i - 1));
            }
            i--;
            array->num--;
        }
    }
}

int fixed_num_array_count_elem(struct fixed_num_array *array)
{
    if (array)
    {
        return array->num;
    }
    else
    {
        return 0;
    }
}

int fixed_num_array_index_elem(struct fixed_num_array *array, int index)
{
    if (index >= array->num)
    {
        assert(0);
    }

    return array->elems[index];
}