Function writeBytes

app/src/AI/FileSandbox.cpp:565–604

* @brief Atomically writes (or appends) UTF-8 content to a file under the 'AI/' write root. */

 * @brief Atomically writes (or appends) UTF-8 content to a file under the 'AI/' write root.
 */
static QJsonObject writeBytes(const QString& path,
                              const QByteArray& payload,
                              bool appendMode,
                              const QString& root)
{
  const QFileInfo info(path);
  if (info.isSymLink())
    return failure(QStringLiteral("outside_sandbox"),
                   QStringLiteral("Refusing to write through a symlinked target."));

  if (!QDir().mkpath(info.absolutePath()))
    return failure(QStringLiteral("mkdir_failed"), info.absolutePath());

  if (appendMode) {
    QFile file(path);
    if (!file.open(QIODevice::Append))
      return failure(QStringLiteral("open_failed"), file.errorString());

    if (file.write(payload) != payload.size())
      return failure(QStringLiteral("write_failed"), file.errorString());

    file.close();
  } else {
    QSaveFile file(path);
    if (!file.open(QIODevice::WriteOnly))
      return failure(QStringLiteral("open_failed"), file.errorString());

    if (file.write(payload) != payload.size())
      return failure(QStringLiteral("write_failed"), file.errorString());

    if (!file.commit())
      return failure(QStringLiteral("commit_failed"), file.errorString());
  }

  QJsonObject out;
  out[QStringLiteral("ok")]           = true;
  out[QStringLiteral("path")]         = displayPath(path, root);
  out[QStringLiteral("bytesWritten")] = static_cast<double>(payload.size());
  return out;
}

/**
 * @brief Writes content to an 'AI/' file, replacing it atomically.