Introduce proper HandlerFactory and reduce dependencies of RequestWorker

handlers/handlerfactory.h

@@ -3,7 +3,25 @@
 #include <memory>
 #include "handler.h"
 #include "../template.h"
+class HandlerFactory
+{
+	HandlerConfig &handlerConfig;
+	Template &templ;
+	Database &db;
+	UrlProvider &urlProvider;
+	ICache &cache;
+
+	template <class T> inline std::unique_ptr<T> produce(Session &userSession)
+	{
+		return std::make_unique<T>(handlerConfig, templ, db, userSession, urlProvider, cache);
+	}
+
+  public:
+	HandlerFactory(HandlerConfig &handlerConfig, Template &templ, Database &db, UrlProvider &urlprovider, ICache &cache)
+		: handlerConfig(handlerConfig), templ(templ), db(db), urlProvider(urlprovider), cache(cache)
+	{
+	}
+	std::unique_ptr<Handler> createHandler(const std::string &action, Session &userSession);
+};
 
-std::unique_ptr<Handler> createHandler(const std::string &action, HandlerConfig &handlerConfig, Template &templ,
-									   Database &db, Session &usersession, UrlProvider &urlprovider, ICache &cache);
 #endif // HANDLERFACTORY_H