logic: Allow changing the log file path in preferences (issue #156) (#900)

src/lib/app/Application.cpp

@@ -30,6 +30,7 @@
 #include "tracing.h"
 #include "utilityString.h"
 #include "utilityUuid.h"
+#include "FileLogger.h"
 
 std::shared_ptr<Application> Application::s_instance;
 std::string Application::s_uuid;
@@ -112,6 +113,13 @@ void Application::loadSettings()
 	settings->load(UserPaths::getAppSettingsPath());
 
 	LogManager::getInstance()->setLoggingEnabled(settings->getLoggingEnabled());
+	Logger* logger = LogManager::getInstance()->getLoggerByType("FileLogger");
+	if (logger)
+	{
+		const auto fileLogger = dynamic_cast<FileLogger*>(logger);
+		fileLogger->setLogDirectory(settings->getLogDirectoryPath());
+		fileLogger->setFileName(FileLogger::generateDatedFileName(L"log"));
+	}
 
 	loadStyle(settings->getColorSchemePath());
 }

src/lib/settings/ApplicationSettings.cpp

@@ -337,6 +337,17 @@ void ApplicationSettings::setVerboseIndexerLoggingEnabled(bool value)
 	setValue<bool>("application/verbose_indexer_logging_enabled", value);
 }
 
+FilePath ApplicationSettings::getLogDirectoryPath() const
+{
+	return FilePath(getValue<std::wstring>(
+						"application/log_directory_path", UserPaths::getLogPath().getAbsolute().wstr()));
+}
+
+void ApplicationSettings::setLogDirectoryPath(const FilePath &path)
+{
+	setValue<std::wstring>("application/log_directory_path", path.wstr());
+}
+
 void ApplicationSettings::setLogFilter(int mask)
 {
 	setValue<int>("application/log_filter", mask);

src/lib/settings/ApplicationSettings.h

@@ -82,6 +82,9 @@ public:
 	bool getVerboseIndexerLoggingEnabled() const;
 	void setVerboseIndexerLoggingEnabled(bool loggingEnabled);
 
+	FilePath getLogDirectoryPath() const;
+	void setLogDirectoryPath(const FilePath& path);
+
 	int getLogFilter() const;
 	void setLogFilter(int mask);