//
// Created by nicol on 2018-03-18.
//

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

const esc_uuid_t* esc_uuid_create() {
    esc_uuid_t* result = malloc(sizeof(esc_uuid_t));
    srand(time(NULL));
    for(int i=0;i<16;i++)
        result->data[i] = (uint8_t)(rand() & 0xff);
    return result;
}

const esc_uuid_t* esc_uuid_from(uint8_t* src, size_t size) {
    if (size != 16) {
        return 0;
    }
    esc_uuid_t* uuid = malloc(sizeof(esc_uuid_t));
    for (size_t i=0; i<size; i++)
        uuid->data[i] = src[i];
    return uuid;
}

const char* esc_uuid_format(const esc_uuid_t* uuid, char* buffer, size_t buf_size) {
    snprintf(buffer, buf_size, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
             uuid->data[0],
             uuid->data[1],
             uuid->data[2],
             uuid->data[3],
             uuid->data[4],
             uuid->data[5],
             uuid->data[6],
             uuid->data[7],
             uuid->data[8],
             uuid->data[9],
             uuid->data[10],
             uuid->data[11],
             uuid->data[12],
             uuid->data[13],
             uuid->data[14],
             uuid->data[15]);
    return buffer;
}