WIP: Fix deps and nix-module

flake.nix

@@ -14,7 +14,7 @@
       package-json = lib.importJSON ./package.json;
     in {
 
-      default = pkgs.buildNpmPackage {
+      default = pkgs.stdenv.mkDerivation {
         pname = package-json.name;
         version = package-json.version;
         meta.homepage = package-json.repository.url;
@@ -23,19 +23,34 @@
         src = lib.fileset.toSource {
           root = ./.;
           fileset = lib.fileset.difference ./. (lib.fileset.unions [
-            ./flake.nix
+            ./module.nix
             ./flake.lock
+            ./flake.nix
           ]);
         };
-        npmDepsHash = "sha256-UNc902yMkoWfpun1RrLYlEtOXcFd7uxlwKFWoM0/nTE=";
 
-        postInstall = ''
-          ln -vs /run/secrets/pvv-doorbell-config.json $out/lib/node_modules/$pname/config.json
-        '';
+        nativeBuildInputs = with pkgs; [
+          importNpmLock.hooks.npmConfigHook
+          nodejs
+          # nodejs.passthru.python # for node-gyp
+          npmHooks.npmBuildHook
+          npmHooks.npmInstallHook
+        ];
+
         dontNpmBuild = true;
+
+        npmDeps = pkgs.importNpmLock {
+          npmRoot = ./.;
+        };
       };
-
     });
-  };
 
+    overlays = forAllSystems (system: {
+      default = prevPackages: finalPackages: {
+        pvv-doorbell-bot = self.packages.${system}.default;
+      };
+    });
+
+    nixosModules.default = import ./module.nix;
+  };
 }

index.mjs

@@ -7,7 +7,9 @@ import {
 
 import axios from "axios";
 
-import config from "./config.json" assert {type: "json"};
+import { env } from 'node:process';
+
+const config = await import (env.DOORBELL_CONFIG_FILE || "./config.json"); // assert {type: "json"};
 
 const homeserverUrl = config.homeserver;
 const token = config.token;
@@ -130,4 +132,4 @@ async function handleCommand(roomId, event) {
     };
 
     client.sendMessage(roomId, event);
-}
+}

module.nix

@@ -0,0 +1,61 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.services.pvv-doorbell-bot;
+  inherit (lib) mkDefault mkEnableOption mkPackageOption mkIf mkOption types mdDoc;
+in
+{
+  options.services.pvv-doorbell-bot = {
+    enable = mkEnableOption (lib.mdDoc "Enable the doorbell service that alerts on matrix/discord pings");
+
+    package = mkPackageOption pkgs "pvv-doorbell-bot" { };
+    nodePackage = mkPackageOption pkgs "nodejs_20" { };
+
+    user = mkOption {
+      type = types.str;
+      default = "pvv-doorbell-bot";
+    };
+
+    group = mkOption {
+      type = types.str;
+      default = "pvv-doorbell-bot";
+    };
+
+    settings = {
+      configFile = mkOption {
+        type = types.path;
+        description = mdDoc "Path to secret config.json file that sets the options defined in `config.json.template`";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users = mkIf (cfg.user == "pvv-doorbell-bot") {
+      pvv-doorbell-bot = {
+        description = "PVV Doorbell Matrix Bot User";
+        isSystemUser = true;
+        group = cfg.group;
+      };
+    };
+
+    users.groups = mkIf (cfg.group == "pvv-doorbell-bot") {
+      pvv-doorbell-bot = { };
+    };
+
+    systemd.services."pvv-doorbell-bot" = {
+      serviceConfig = let 
+        appDir = "${cfg.package}/lib/node_modules/doorbell-matrix-bot";
+      in {
+        ExecStart = "${lib.getExe cfg.nodePackage} ${appDir}/index.mjs";
+        WorkingDirectory = appDir;
+        RuntimeDirectory = "pvv-doorbell-bot";
+        User = cfg.user;
+        Group = cfg.group;
+      };
+
+      environment = {
+        DOORBELL_CONFIG_FILE = cfg.settings.configFile;
+      };
+    };
+  };
+}
+

package.json

@@ -13,6 +13,7 @@
   "author": "henrkgr",
   "license": "ISC",
   "dependencies": {
-    "axios": "^1.7.4"
+    "axios": "^1.7.4",
+    "matrix-bot-sdk": "^0.7.1"
   }
 }

result

@@ -0,0 +1 @@
+/nix/store/4688vk323al998nig45cs94mxj5rjf9k-doorbell-matrix-bot-1.0.0