Move fileInfo search into C++ code

Author: gsurkov

application/screens/homescreen.qml

@@ -96,7 +96,6 @@ Item {
         delegate: FlipperListDelegate {
             onUpdateRequested: {
                 const channelName = "release";
-                const firmwareType = "full_dfu";
                 const latestVersion = firmwareUpdates.channel(channelName).latestVersion;
 
                 const messageObj = {
@@ -105,7 +104,7 @@ Item {
                 };
 
                 confirmationDialog.openWithMessage(function() {
-                    downloader.downloadRemoteFile(device, latestVersion.fileInfo(firmwareType, device.target));
+                    downloader.downloadRemoteFile(device, latestVersion);
                 }, messageObj);
             }
 

application/screens/versionscreen.qml

@@ -60,10 +60,7 @@ Item {
             delegate: VersionListDelegate {
                 onInstallRequested: {
                     screen.homeRequested();
-
-                    const firmwareType = "full_dfu";
-                    const fileInfo = versionInfo.fileInfo(firmwareType, device.target);
-                    downloader.downloadRemoteFile(screen.device, fileInfo);
+                    downloader.downloadRemoteFile(screen.device, versionInfo);
                 }
 
                 onChangelogRequested: {

backend/firmwaredownloader.cpp

@@ -28,16 +28,17 @@ void FirmwareDownloader::downloadLocalFile(FlipperZero *device, const QString &f
     enqueueOperation(new Flipper::Zero::FirmwareDownloadOperation(device, file));
 }
 
-void FirmwareDownloader::downloadRemoteFile(FlipperZero *device, const Updates::FileInfo &fileInfo)
+void FirmwareDownloader::downloadRemoteFile(FlipperZero *device, const Flipper::Updates::VersionInfo &versionInfo)
 {
     // TODO: Local cache on hard disk?
+    const auto fileInfo = versionInfo.fileInfo(QStringLiteral("full_dfu"), device->target());
+
     auto *fetcher = new RemoteFileFetcher(this);
+    auto *buf = new QBuffer(this);
 
-    connect(fetcher, &RemoteFileFetcher::finished, this, [=](const QByteArray &data) {
-        auto *buf = new QBuffer(this);
+    check_return_void(buf->open(QIODevice::ReadWrite), "Failed to create intermediate buffer.");
 
-        buf->open(QIODevice::ReadWrite);
-        buf->write(data);
+    connect(fetcher, &RemoteFileFetcher::finished, this, [=]() {
         buf->seek(0);
         buf->close();
 
@@ -47,7 +48,7 @@ void FirmwareDownloader::downloadRemoteFile(FlipperZero *device, const Updates::
     });
 
     device->setStatusMessage(tr("Fetching the update file..."));
-    fetcher->fetch(fileInfo);
+    fetcher->fetch(fileInfo, buf);
 }
 
 void FirmwareDownloader::downloadLocalFUS(FlipperZero *device, const QString &filePath)

backend/firmwaredownloader.h

@@ -26,7 +26,7 @@ class FirmwareDownloader : public QObject
 
 public slots:
     void downloadLocalFile(Flipper::FlipperZero *device, const QString &filePath);
-    void downloadRemoteFile(Flipper::FlipperZero *device, const Flipper::Updates::FileInfo &fileInfo);
+    void downloadRemoteFile(Flipper::FlipperZero *device, const Flipper::Updates::VersionInfo &versionInfo);
 
     void downloadLocalFUS(Flipper::FlipperZero *device, const QString &filePath);
     void downloadLocalWirelessStack(Flipper::FlipperZero *device, const QString &filePath);