[fix] Rewrite scriptlet conditions

netoik-api.spec

@@ -26,18 +26,27 @@ Netoik rest API server
 %make_install
 
 %pre
+# Create user only if not already exisiting.
 id %{name} || useradd --no-create-home --shell=%{_sbindir}/nologin --user-group %{name}
 
 %post
+# Reload systemctl daemon and (re)start service.
 systemctl daemon-reload
 systemctl restart %{name}-server.service
 systemctl enable %{name}-server.service
 
 %preun
-[ $1 -eq 0 ] && systemctl stop %{name}-server.service
+# Stop service only if uninstalling.
+if [ $1 -eq 0 ]; then 
+	systemctl disable --now %{name}-server.service
+fi
 
 %postun
-[ $1 -eq 0 ] && systemctl daemon-reload && userdel %{name}
+# Reload systemctl daemon and remove netoik-api user only if uninstalling.
+if [ $1 -eq 0 ]; then
+	systemctl daemon-reload
+	userdel %{name}
+fi
 
 %files
 %attr(755, root, root) %dir %{_var}/%{name}