#include "common/Crypto.h"

#include <drogon/utils/Utilities.h>
#include <iomanip>
#include <random>
#include <sstream>
#include <string>

namespace visione::crypto
{
namespace
{
std::string toHex(const unsigned char *data, size_t size)
{
    std::ostringstream stream;
    stream << std::hex << std::uppercase << std::setfill('0');
    for (size_t i = 0; i < size; ++i)
    {
        stream << std::setw(2) << static_cast<int>(data[i]);
    }
    return stream.str();
}
}  // namespace

std::string sha256(const std::string &value)
{
    return drogon::utils::getSha256(value);
}

std::string randomNumericCode(int digits)
{
    std::random_device device;
    std::mt19937 generator(device());
    std::uniform_int_distribution<int> distribution(0, 9);

    std::string code;
    code.reserve(static_cast<size_t>(digits));
    for (int i = 0; i < digits; ++i)
    {
        code.push_back(static_cast<char>('0' + distribution(generator)));
    }
    return code;
}

std::string randomToken()
{
    return drogon::utils::getUuid() + drogon::utils::getUuid();
}

std::string hashSecret(const std::string &secret)
{
    return sha256("visione:" + secret);
}
}  // namespace visione::crypto