burnham: Add domeneshop-dyndns, make it a module

hosts/defiant/services/dyndns.nix

@@ -1,26 +1,11 @@
 { config, pkgs, lib, ... }:
 
-let
-  dnsname = "site3.feal.no";
-in {
-  # Defines DDNS_TOKEN and DDNS_SECRET from https://domene.shop/admin?view=api
-  sops.secrets."domeneshop/env" = { };
+{
+  sops.secrets."domeneshop/netrc" = { };
 
-  systemd.services.domeneshop-dyndns = {
-    serviceConfig.EnvironmentFile = config.sops.secrets."domeneshop/env".path;
-    startAt = "*/10 * * * *";
-
-    script = ''
-      DNSNAME="${dnsname}"
-      NEW_IP="$(${lib.getExe pkgs.curl} --silent https://ipinfo.io/ip)"
-      OLD_IP="$(${lib.getExe pkgs.getent} hosts "$DNSNAME" | ${lib.getExe pkgs.gawk} '{ print $1 }')"
-
-      if [[ "$NEW_IP" != "$OLD_IP" ]]; then
-        echo "Old IP ($OLD_IP) does not match new IP ($NEW_IP), updating..."
-        ${lib.getExe pkgs.curl} --silent "https://$DDNS_TOKEN:$DDNS_SECRET@api.domeneshop.no/v0/dyndns/update?hostname=$DNSNAME&myip=$NEW_IP"
-      else
-        echo "Old IP ($OLD_IP) matches new IP ($NEW_IP), exiting..."
-      fi
-    '';
+  services.domeneshop-dyndns = {
+    enable = true;
+    domain = "site3.feal.no";
+    netrcFile = config.sops.secrets."domeneshop/netrc".path;
   };
 }