Implement logger functionality and signal handling: add Logger structure with mutex, logging functions, and handle SIGINT in utils.

src/logger.c

@@ -0,0 +1,80 @@
+#include "logger.h"
+
+Logger *initLogger(const char *_filename)
+{
+    Logger *logger_struct = malloc(sizeof(Logger));
+    if (logger_struct == NULL)
+    {
+        return NULL;
+    }
+
+    logger_struct->f_log = fopen(_filename, "w");
+    if (logger_struct->f_log == NULL)
+    {
+        free(logger_struct);
+        return NULL;
+    }
+    pthread_mutex_init(&logger_struct->lock, NULL);
+}
+
+int logErrorEvent(Logger *_logger, const char *_message)
+{
+    if (_logger == NULL)
+    {
+        return 0;
+    }
+
+    char current_time_str[32];
+    printDateAndTimeInString(time(NULL), current_time_str);
+
+    fprintf(_logger->f_log, "%s [ERROR] %s", current_time_str, _message);
+    return 1;
+}
+
+int logWarningEvent(Logger *_logger, const char *_message)
+{
+    if (_logger == NULL)
+    {
+        return 0;
+    }
+
+    char current_time_str[32];
+    printDateAndTimeInString(time(NULL), current_time_str);
+
+    fprintf(_logger->f_log, "%s [WARNING] %s", current_time_str, _message);
+    return 1;
+}
+
+int logHardwareEvent(Logger *_logger, const char *_event_origin, const char *_message)
+{
+    if (_logger == NULL)
+    {
+        return 0;
+    }
+
+    char current_time_str[32];
+    printDateAndTimeInString(time(NULL), current_time_str);
+
+    fprintf(_logger->f_log, "%s [%s] %s", current_time_str, _event_origin, _message);
+    return 1;
+}
+int logInfoEvent(Logger *_logger, const char *_message)
+{
+    if (_logger == NULL)
+    {
+        return 0;
+    }
+
+    char current_time_str[32];
+    printDateAndTimeInString(time(NULL), current_time_str);
+
+    fprintf(_logger->f_log, "%s [INFO] %s", current_time_str, _message);
+    return 1;
+}
+int endLogger(Logger *_logger)
+{
+    fclose(_logger->f_log);
+    free(_logger);
+    _logger = NULL;
+    return 0;
+}

src/main.c

@@ -1,16 +1,12 @@
 #include "main.h"
+
+#include "utils.h"
+#include "logger.h"
 #include "users.h"
 #include "tui.h"
 #include "rfid_handler.h"
 #include "file_handler.h"
 
-void handle_sigint(int sig)
-{
-    endwin();
-    clear();
-    exit(0);
-}
-
 int main(int argc, char const **argv)
 {
     signal(SIGINT, handle_sigint);

src/utils.c

@@ -26,3 +26,10 @@ void printDateAndTimeInString(time_t _input, char *_output)
 
     return;
 }
+
+void handle_sigint(int sig)
+{
+    endwin();
+    clear();
+    exit(0);
+}