feat: Add auto deployment service

lib/default.nix

@@ -37,9 +37,11 @@ rec {
     fromHive {
       builder = (
         node: module: {
-          monitors = let
+          monitors =
+            let
               hostname = mkHost node module.config;
-          in {
+            in
+            {
               ${prefix + hostname} = {
                 type = "ping";
                 inherit tags hostname;

nixos/module.nix

@@ -14,10 +14,18 @@ in
       json = lib.mkOption { type = lib.types.package; };
       script = lib.mkOption { type = lib.types.package; };
     };
+    enableService = lib.mkEnableOption "the auto-deployment systemd unit";
     host = lib.mkOption {
       default = null;
       type = with lib.types; nullOr str;
     };
+    username = lib.mkOption {
+      default = null;
+      type = with lib.types; nullOr str;
+    };
+    passwordFile = lib.mkOption {
+      type = with lib.types; nullOr path;
+    };
     extraFlags = lib.mkOption {
       default = [ ];
       example = [ "--scrape-http-keywords" ];
@@ -46,9 +54,12 @@ in
       };
     };
   };
-  config.statelessUptimeKuma = {
+  config = {
+    statelessUptimeKuma = {
       lib = import ../lib { inherit lib; };
-    extraFlags = lib.optional (cfg.host != null) "--host ${cfg.host}";
+      extraFlags =
+        lib.optional (cfg.host != null) "--host ${cfg.host}"
+        ++ lib.optional (cfg.username != null) "--username ${cfg.username}";
       build = {
         json = probesFormat.generate "probes.json" cfg.probesConfig;
         script = pkgs.writeShellApplication {
@@ -61,4 +72,22 @@ in
         };
       };
     };
+    systemd.services.stateless-uptime-kuma = lib.mkIf cfg.enableService {
+      description = "Uptime-kuma probes deployment";
+
+      wants = [ "uptime-kuma.service" ];
+      after = [ "uptime-kuma.service" ];
+
+      wantedBy = [ "multi-user.target" ];
+
+      script = ''
+        UPTIME_KUMA_PASSWORD=$(cat $CREDENTIALS_DIRECTORY/password) ${lib.getExe config.statelessUptimeKuma.build.script}
+      '';
+
+      serviceConfig = {
+        LoadCredential = "password:${cfg.passwordFile}";
+        Type = "oneshot";
+      };
+    };
+  };
 }