Download multiple files from Ftp issue - c++

Question

I want to download some files from my ftp server. The problem is, that only the last one has data, others 0 sized or it crashes when close QFile as a pointer.
My code:
QFtp *ftp = new QFtp(this);
ftp->connectToHost(FTP_HOST, FTP_PORT);
ftp->login(FTP_USERNAME, FTP_PASSWORD);
QFile *reportFile = nullptr;
connect(ftp, &QFtp::listInfo, [this](const QUrlInfo &ftpUrlInfo) {
if (ftpUrlInfo.isFile()) {
reportFile = new QFile("some local path" + ftpUrlInfo.name());
reportFile->open(QIODevice::WriteOnly);
ftp->get("some ftp path" + ftpUrlInfo.name(), reportFile, QFtp::Binary);
}
});
connect(ftp, &QFtp::done, [this]() {
qDebug() << "DONE!";
ftp->close();
ftp->deleteLater();
});
connect(ftp, &QFtp::commandFinished, [this]() {
qDebug() << "COMMAND FINISHED!";
if (reportFile != nullptr) {
reportFile.close();
reportFile->deleteLater();
}
});
ftp->list("ftp path to dir");
So, it should download the file, close it and deleteLater for all files in the ftp directory. Any ideas how to do it? Thanks.

Answer 1

I have finally fixed it!
My code:
QQueue<QFile*> reportQueue; //initialize the queue
connect(ftp, &QFtp::listInfo, [this](const QUrlInfo &ftpUrlInfo) {
if (ftpUrlInfo.isFile()) {
reportQueue.append(new QFile("local path" + "\\" + ftpUrlInfo.name()));
}
});
connect(ftp, &QFtp::done, [this]() {
emit reportsDataFinished();
});
connect(ftp, &QFtp::commandFinished, [this]() {
if (ftp->currentCommand() == QFtp::List) {
proceedDownload();
} else if (ftp->currentCommand() == QFtp::Get) {
reportFile->close();
reportFile->deleteLater();
proceedDownload();
}
});
if (ftp->error() == QFtp::NotConnected) {
emit ftpReportError(ftp->error());
} else {
ftp->list("ftp path to the dir");
}
void Test::proceedDownload()
{
if (!reportQueue.isEmpty()) {
reportFile = reportQueue.dequeue();
reportFile->open(QIODevice::WriteOnly);
QFileInfo ftpFileInfo(reportFile->fileName());
ftp->get("ftp path to file" + "/" + ftpFileInfo.fileName(), reportFile, QFtp::Binary);
}
}
I added the files to the QQueue, when ftp list command has been finished, I use function proceedDownload(). In the function, I dequeue() the queue to the reportFile and proceed with ftp get() function. When get ftp command finishes, I close and delete the file from memory, and again call the proceedDownload(). So the the whole process goes again until the queue is empty. I use emit reportsDataFinished(); signal in the connection to the slot closeFtp() where ftp closes and deleteLater() frees the resources. All files downloads well. Thank you.