#include <QFile>
#include <QCryptographicHash>
#include "Crypto.h"

using namespace craftlab::fakeraid;

Crypto::Crypto()
{
}

void Crypto::Compute(const std::string& dir, FileAndSum& file)
{
    if (file.isDir)
        return;
    const std::string path = dir + "/" + file.fileName;
    QFile f(path.c_str());
    if (!f.open(QFile::ReadOnly))
        throw std::runtime_error("Cannot open file for reading: " + path);
    QCryptographicHash hash(QCryptographicHash::Algorithm::Sha256);
    if (!hash.addData(&f))
        throw std::runtime_error("Cannot read file: " + path);
    file.checksum = hash.result().toHex();
}