#include "network-downloader.h"
void downloadFromUrl(const QString &url, const QString &installPath, std::function<void(QString)> logCallback = nullptr) {
    if (QFile::exists(installPath)) {
        if (logCallback) logCallback("File already exists: " + installPath);
        return;
    }

    if (logCallback) logCallback("Downloading from url...");
    QNetworkAccessManager manager;
    QNetworkRequest request((QUrl(url)));
    QEventLoop loop;
    QNetworkReply *reply = manager.get(request);

    QObject::connect(reply, &QNetworkReply::downloadProgress, [&](qint64 received, qint64 total){
        if (logCallback) logCallback(QString("Download progress: %1/%2 bytes").arg(received).arg(total));
    });

    QObject::connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
    loop.exec();

    QVariant statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);

    if (!statusCode.isValid()) {
        if (logCallback) logCallback("Download failed: Invalid Status code");
        reply->deleteLater();
        return;
    }

    if (reply->error() != QNetworkReply::NoError) {
        if (logCallback) logCallback("Download failed: " + reply->errorString());
        reply->deleteLater();
        return;
    }

    if (statusCode.toInt() == 302 || statusCode.toInt() == 301) {
        QVariant redir = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
        if (!redir.isValid()) {
            if (logCallback) logCallback("Download failed: Invalid redirect");
            reply->deleteLater();
            return;
        }
        QUrl newUrl = redir.toUrl();
        downloadFromUrl(newUrl.toString(), installPath, logCallback);
        return;
    }

    QFile file(installPath);
    if (file.open(QIODevice::WriteOnly)) {
        file.write(reply->readAll());
        file.close();
        if (logCallback) logCallback("Download complete: " + installPath);
    } else {
        if (logCallback) logCallback("Cannot write file: " + installPath);
    }
    reply->deleteLater();
}