Update project files and headers: ensure consistency and maintainability across the codebase.

include/logger.h

@@ -1,21 +1,25 @@
 #ifndef __LOGGER_H__
 #define __LOGGER_H__
 
-#include "main.h"
 #include "rfid_handler.h"
 #include "utils.h"
 
-typedef struct
+#include <stdarg.h>
+
+
+typedef struct Logger
 {
     pthread_mutex_t lock;
     FILE *f_log;
 } Logger;
 
+extern Logger *logger_global;
+
 Logger *initLogger(const char *_filename);
-int logErrorEvent(Logger *_logger, const char *_message);
-int logWarningEvent(Logger *_logger, const char *_message);
-int logHardwareEvent(Logger *_logger, const char *_event_origin, const char *_message);
-int logInfoEvent(Logger *_logger, const char *_message);
+int logErrorEvent(Logger *_logger, const char *_fmt, ...);
+int logWarningEvent(Logger *_logger, const char *_fmt, ...);
+int logHardwareEvent(Logger *_logger, const char *_event_origin, const char *_fmt, ...);
+int logInfoEvent(Logger *_logger, const char *_fmt, ...);
 int endLogger(Logger *_logger);
 
 #endif