case structure

modules/services/step-ca/mtls.nix

@@ -1,5 +1,6 @@
 { inputs, lib, ... }:
 let
+  # Options that will be in common between
   opts = {
     enable = lib.mkEnableOption "Enable mTLS";
     caURL = lib.mkOption {
@@ -110,18 +111,20 @@ let
         echo "Renewing mTLS certificate"
       else
         rc=$?
-        if [ "$rc" -eq 1 ]; then
+        case "$rc" in
+          1)
             echo "mTLS certificate does not need renewal"
             exit 0
-        fi
-
-        if [ "$rc" -eq 2 ]; then
+            ;;
+          2)
             echo "mTLS certificate missing: ${tlsCert}" >&2
             exit 1
-        fi
-
+            ;;
+          *)
             echo "step certificate needs-renewal failed with rc=$rc" >&2
             exit "$rc"
+            ;;
+        esac
       fi
 
       ${lib.getExe pkgs.step-cli} ca renew --force "${tlsCert}" "${tlsKey}"