GH-849 Fix failure signals not getting delivered from NetJob properly

logic/net/NetJob.cpp

@@ -85,13 +85,13 @@ void NetJob::startMoreParts()
 		{
 			if(!m_failed.size())
 			{
-				qDebug() << m_job_name.toLocal8Bit() << "succeeded.";
+				qDebug() << m_job_name << "succeeded.";
 				emit succeeded();
 			}
 			else
 			{
-				qCritical() << m_job_name.toLocal8Bit() << "failed.";
-				emit failed();
+				qCritical() << m_job_name << "failed.";
+				emit failed(tr("%1 failed").arg(m_job_name));
 			}
 		}
 		return;

logic/net/NetJob.h

@@ -86,12 +86,6 @@ public:
 private slots:
 	void startMoreParts();
 
-signals:
-	void started();
-	void progress(qint64 current, qint64 total);
-	void succeeded();
-	void failed();
-
 public slots:
 	virtual void start();
 	// FIXME: implement

logic/screenshots/ImgurUpload.cpp

@@ -20,6 +20,7 @@ ImgurUpload::ImgurUpload(ScreenshotPtr shot) : NetAction(), m_shot(shot)
 
 void ImgurUpload::start()
 {
+	finished = false;
 	m_status = Job_InProgress;
 	QNetworkRequest request(m_url);
 	request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Uncached)");
@@ -59,44 +60,52 @@ void ImgurUpload::start()
 }
 void ImgurUpload::downloadError(QNetworkReply::NetworkError error)
 {
-	qDebug() << m_reply->errorString();
+	qCritical() << "ImgurUpload failed with error" << m_reply->errorString() << "Server reply:\n" << m_reply->readAll();
+	if(finished)
+	{
+		qCritical() << "Double finished ImgurUpload!";
+		return;
+	}
 	m_status = Job_Failed;
+	finished = true;
+	m_reply.reset();
+	emit failed(m_index_within_job);
 }
 void ImgurUpload::downloadFinished()
 {
-	if (m_status != Job_Failed)
+	if(finished)
 	{
+		qCritical() << "Double finished ImgurUpload!";
+		return;
+	}
 	QByteArray data = m_reply->readAll();
 	m_reply.reset();
 	QJsonParseError jsonError;
 	QJsonDocument doc = QJsonDocument::fromJson(data, &jsonError);
 	if (jsonError.error != QJsonParseError::NoError)
 	{
-			qDebug() << jsonError.errorString();
+		qDebug() << "imgur server did not reply with JSON" << jsonError.errorString();
+		finished = true;
+		m_reply.reset();
 		emit failed(m_index_within_job);
 		return;
 	}
 	auto object = doc.object();
 	if (!object.value("success").toBool())
 	{
-			qDebug() << doc.toJson();
+		qDebug() << "Screenshot upload not successful:" << doc.toJson();
+		finished = true;
+		m_reply.reset();
 		emit failed(m_index_within_job);
 		return;
 	}
 	m_shot->m_imgurId = object.value("data").toObject().value("id").toString();
 	m_shot->m_url = object.value("data").toObject().value("link").toString();
 	m_status = Job_Finished;
+	finished = true;
 	emit succeeded(m_index_within_job);
 	return;
 }
-	else
-	{
-		qDebug() << m_reply->readAll();
-		m_reply.reset();
-		emit failed(m_index_within_job);
-		return;
-	}
-}
 void ImgurUpload::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
 {
 	m_total_progress = bytesTotal;

logic/screenshots/ImgurUpload.h

@@ -27,4 +27,5 @@ slots:
 
 private:
 	ScreenshotPtr m_shot;
+	bool finished = true;
 };