Added application boilerplate.

Mostly taken from old data-logger application.

.gitignore

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+node_modules
+.env
+data

.vscode/launch.json

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+{
+	// Use IntelliSense to learn about possible attributes.
+	// Hover to view descriptions of existing attributes.
+	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"type": "node",
+			"request": "launch",
+			"name": "Launch Program",
+			"skipFiles": [
+				"<node_internals>/**"
+			],
+			"program": "${workspaceFolder}/index.js"
+		}
+	]
+}

Dockerfile

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+FROM node:lts-alpine
+
+WORKDIR /opt/app
+
+COPY package.json ./
+COPY package-lock.json ./
+
+RUN npm ci
+
+COPY . .
+
+CMD [ "node", "index.js" ]

db.js

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+const pg = require("pg")
+const client = new pg.Pool();
+client.connect();
+module.exports = client

docker-compose.yml

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+version: '3'
+
+services:
+
+  app:
+    restart: always
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - 8080:8080
+    environment:
+      MQTT: "mqtt://192.168.24.215"
+      DB: "mqtt://192.168.24.215"
+      PGHOST: "database"
+      PGPASSWORD: "6561284a-b277-4668-af57-3226c8ff454c"
+      PGUSER: "postgres"
+    depends_on:
+      - database
+
+  database:
+    image: postgres:alpine
+    restart: always
+    environment:
+      POSTGRES_PASSWORD: 6561284a-b277-4668-af57-3226c8ff454c
+    volumes:
+      - postgres:/var/lib/postgresql/data
+
+volumes:
+  postgres:

index.js

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+require("dotenv").config();
+const mqtt = require("mqtt");
+const express = require("express");
+
+// const db = require("./db");
+
+const app = express();
+
+app.use(require("./routes"))
+
+app.use(express.static("public"));
+
+app.listen(process.env.PORT || 8080, () => {
+	console.log(`Listening on port ${process.env.PORT || 8080}`);
+});
+
+const mqttClient = mqtt.connect(process.env.MQTT);
+
+mqttClient.on("connect", (a) => {
+	console.log(`Connected to ${process.env.MQTT}`);
+});
+
+mqttClient.subscribe("motion");
+mqttClient.subscribe("sound");
+mqttClient.subscribe("temperature");
+mqttClient.subscribe("light");
+
+mqttClient.on("message", (topic, message) => {
+	console.log(topic, message.toString());
+});

package.json

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+{
+  "dependencies": {
+    "dotenv": "^16.3.1",
+    "express": "^4.18.2",
+    "mqtt": "^5.0.2",
+    "pg": "^8.11.2"
+  },
+  "name": "alarm-controller",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": ""
+}

routes/index.js

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+const express = require("express");
+const Router = express.Router();
+
+module.exports = Router;