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/*
* cdownloadmanager_moc.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "cdownloadmanager_moc.h"
#include "../vcmiqt/launcherdirs.h"
#include "../../lib/CConfigHandler.h"
CDownloadManager::CDownloadManager()
{
connect(&manager, SIGNAL(finished(QNetworkReply *)),
SLOT(downloadFinished(QNetworkReply *)));
connect(&manager, &QNetworkAccessManager::sslErrors, [](QNetworkReply * reply, const QList<QSslError> & errors) {
if(settings["launcher"]["ignoreSslErrors"].Bool())
reply->ignoreSslErrors();
});
}
void CDownloadManager::downloadFile(const QUrl & url, const QString & file, qint64 bytesTotal)
{
QNetworkRequest request(url);
FileEntry entry;
entry.file.reset(new QFile(QString{QLatin1String{"%1/%2"}}.arg(CLauncherDirs::downloadsPath(), file)));
entry.bytesReceived = 0;
entry.totalSize = bytesTotal;
entry.filename = file;
if(entry.file->open(QIODevice::WriteOnly | QIODevice::Truncate))
{
entry.status = FileEntry::IN_PROGRESS;
entry.reply = manager.get(request);
connect(entry.reply, SIGNAL(downloadProgress(qint64,qint64)),
SLOT(downloadProgressChanged(qint64,qint64)));
}
else
{
entry.status = FileEntry::FAILED;
entry.reply = nullptr;
encounteredErrors += entry.file->errorString();
}
// even if failed - add it into list to report it in finished() call
currentDownloads.push_back(entry);
}
CDownloadManager::FileEntry & CDownloadManager::getEntry(QNetworkReply * reply)
{
assert(reply);
for(auto & entry : currentDownloads)
{
if(entry.reply == reply)
return entry;
}
throw std::runtime_error("Failed to find download entry");
}
void CDownloadManager::downloadFinished(QNetworkReply * reply)
{
FileEntry & file = getEntry(reply);
QVariant possibleRedirectUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
QUrl qurl = possibleRedirectUrl.toUrl();
if(possibleRedirectUrl.isValid())
{
QString filename;
for(int i = 0; i< currentDownloads.size(); ++i)
{
if(currentDownloads[i].file == file.file)
{
filename = currentDownloads[i].filename;
currentDownloads.removeAt(i);
break;
}
}
downloadFile(qurl, filename, file.totalSize);
return;
}
if(file.reply->error())
{
encounteredErrors += file.reply->errorString();
file.file->remove();
file.status = FileEntry::FAILED;
}
else
{
file.file->write(file.reply->readAll());
file.file->close();
file.status = FileEntry::FINISHED;
}
bool downloadComplete = true;
for(auto & entry : currentDownloads)
{
if(entry.status == FileEntry::IN_PROGRESS)
{
downloadComplete = false;
break;
}
}
QStringList successful;
QStringList failed;
for(auto & entry : currentDownloads)
{
if(entry.status == FileEntry::FINISHED)
successful += entry.file->fileName();
else
failed += entry.file->fileName();
}
if(downloadComplete)
finished(successful, failed, encounteredErrors);
file.reply->deleteLater();
file.reply = nullptr;
}
void CDownloadManager::downloadProgressChanged(qint64 bytesReceived, qint64 bytesTotal)
{
auto reply = dynamic_cast<QNetworkReply *>(sender());
FileEntry & entry = getEntry(reply);
entry.file->write(entry.reply->readAll());
entry.bytesReceived = bytesReceived;
if(bytesTotal > entry.totalSize)
entry.totalSize = bytesTotal;
quint64 total = 0;
for(auto & entry : currentDownloads)
total += entry.totalSize > 0 ? entry.totalSize : entry.bytesReceived;
quint64 received = 0;
for(auto & entry : currentDownloads)
received += entry.bytesReceived > 0 ? entry.bytesReceived : 0;
if(received > total)
total = received;
downloadProgress(received, total);
}
bool CDownloadManager::downloadInProgress(const QUrl & url) const
{
for(auto & entry : currentDownloads)
{
if(entry.reply->url() == url)
return true;
}
return false;
}
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