fix(axparameter): Enforce fully-qualified parameter names for consistency

Replace all unqualified parameter names with fully-qualified names using
the "root.axparameter.*" format throughout the codebase. This ensures
consistent API usage and improves clarity in parameter scope handling.

Described in the comment all the possible alternative formats of parameter
name to be used.

Closes #440

Author: lucky-rydar

axparameter/app/axparameter.c

@@ -92,7 +92,7 @@ static void restore_custom_value_from_backup(AXParameter* handle) {
     gchar* value;
 
     if (!ax_parameter_get(handle, "BackupValue", &value, &error) ||
-        !ax_parameter_add(handle, "CustomValue", value, NULL, &error))
+        !ax_parameter_add(handle, "root." APP_NAME ".CustomValue", value, NULL, &error))
         panic("%s", error->message);
 
     syslog(LOG_INFO,
@@ -107,9 +107,9 @@ static void back_up_and_remove_custom_value(AXParameter* handle) {
     GError* error = NULL;
     gchar* value;
 
-    if (!ax_parameter_get(handle, "CustomValue", &value, &error) ||
+    if (!ax_parameter_get(handle, "root." APP_NAME ".CustomValue", &value, &error) ||
         !ax_parameter_set(handle, "BackupValue", value, TRUE, &error) ||
-        !ax_parameter_remove(handle, "CustomValue", &error))
+        !ax_parameter_remove(handle, "root." APP_NAME ".CustomValue", &error))
         panic("%s", error->message);
 
     syslog(LOG_INFO,
@@ -128,14 +128,14 @@ static gboolean monitor_parameters(void* msg_void_ptr) {
 
     syslog(LOG_INFO, "%s was changed to '%s' one second ago", msg->name, msg->value);
 
-    bool has_custom_value_param = has_parameter(handle, "CustomValue");
+    bool has_custom_value_param = has_parameter(handle, "root." APP_NAME ".CustomValue");
 
-    if (is_parameter_yes(handle, "IsCustomized")) {
+    if (is_parameter_yes(handle, "root." APP_NAME ".IsCustomized")) {
         if (!has_custom_value_param)
             restore_custom_value_from_backup(handle);
 
         gchar* custom_value;
-        if (!ax_parameter_get(handle, "CustomValue", &custom_value, &error))
+        if (!ax_parameter_get(handle, "root." APP_NAME ".CustomValue", &custom_value, &error))
             panic("%s", error->message);
         syslog(LOG_INFO, "Custom value: '%s'", custom_value);
         g_free(custom_value);
@@ -190,12 +190,25 @@ int main(void) {
     syslog(LOG_INFO, "SerialNumber: '%s'", serial_number);
     g_free(serial_number);
 
-    // Act on changes to IsCustomized as soon as they happen.
-    if (!ax_parameter_register_callback(handle, "IsCustomized", parameter_changed, handle, &error))
+    // It is possible to subscribe for several formats of the parameter name:
+    // - "IsCustomized"
+    // - "root.axparameter.IsCustomized"
+
+    // Act on changes to root.axparameter.IsCustomized as soon as they happen.
+    if (!ax_parameter_register_callback(handle,
+                                        "root." APP_NAME ".IsCustomized",
+                                        parameter_changed,
+                                        handle,
+                                        &error))
         panic("%s", error->message);
 
-    // Register the same callback for CustomValue, even though that parameter does not exist yet!
-    if (!ax_parameter_register_callback(handle, "CustomValue", parameter_changed, handle, &error))
+    // Register the same callback for root.axparameter.CustomValue, even though that parameter does
+    // not exist yet!
+    if (!ax_parameter_register_callback(handle,
+                                        "root." APP_NAME ".CustomValue",
+                                        parameter_changed,
+                                        handle,
+                                        &error))
         panic("%s", error->message);
 
     // Start listening to callbacks by launching a GLib main loop.