logic: Fixed issues when indexing via CLI (issue #718)

* show proper error message in console when project configuration has issues
* quit when project configuration is wrong
* show indexing progress as self-updating percentage

src/lib_gui/qt/QtCoreApplication.cpp

@@ -7,18 +7,27 @@ QtCoreApplication::QtCoreApplication(int argc, char **argv )
 {
 }
 
-QtCoreApplication::~QtCoreApplication()
-{
-}
-
 void QtCoreApplication::handleMessage(MessageQuitApplication* message)
 {
-	std::cout << "quit" << std::endl;
+	std::cout << "Quitting" << std::endl;
 	emit quit();
 }
 
+void QtCoreApplication::handleMessage(MessageIndexingStatus* message)
+{
+	if (message->showProgress)
+	{
+		std::cout << message->progressPercent << "% " << '\r' << std::flush;
+	}
+}
+
 void QtCoreApplication::handleMessage(MessageStatus* message)
 {
+	if (message->isError)
+	{
+		std::wcout << L"ERROR: ";
+	}
+
 	for (const std::wstring& status : message->stati())
 	{
 		std::wcout << status << std::endl;

src/lib_gui/qt/QtCoreApplication.h

@@ -3,6 +3,7 @@
 
 #include <QCoreApplication>
 
+#include "MessageIndexingStatus.h"
 #include "MessageListener.h"
 #include "MessageQuitApplication.h"
 #include "MessageStatus.h"
@@ -10,16 +11,18 @@
 class QtCoreApplication
 	: public QCoreApplication
 	, public MessageListener<MessageQuitApplication>
+	, public MessageListener<MessageIndexingStatus>
 	, public MessageListener<MessageStatus>
 {
 	Q_OBJECT
 
 public:
 	QtCoreApplication(int argc, char **argv);
-	virtual ~QtCoreApplication();
+	virtual ~QtCoreApplication() = default;
 
 private:
 	virtual void handleMessage(MessageQuitApplication* message);
+	virtual void handleMessage(MessageIndexingStatus* message);
 	virtual void handleMessage(MessageStatus* message);
 };