Upload files to "/"

Dockerfile

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+# Dockerfile
+FROM node:18-alpine
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install dependencies
+COPY package*.json ./
+RUN npm install --production
+
+# Bundle app source
+COPY . .
+
+# Expose port and run
+EXPOSE 3000
+CMD ["node", "server.js"]

docker-compose.yaml

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+version: '3.8'
+
+services:
+  fuego-app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    env_file:
+      - .env
+    ports:
+      - "3000:3000"
+    restart: unless-stopped

package.json

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+{
+  "name": "Amazon-Fuego",
+  "version": "1.0.0",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "@aws-sdk/client-s3": "^3.300.0",
+    "axios": "^1.4.0",
+    "body-parser": "^1.20.2",
+    "csv-stringify": "^6.0.8",
+    "dotenv": "^16.3.1",
+    "express": "^4.18.2",
+    "mysql2": "^3.3.3",
+    "sqlite3": "^5.1.6"
+  }
+}

s3.js

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+// s3.js
+require('dotenv').config();
+const { S3Client, PutObjectCommand } = require('@aws-sdk/client-s3');
+const { stringify } = require('csv-stringify/sync');
+
+const s3 = new S3Client({
+    region: process.env.AWS_REGION
+});
+
+/**
+ * Uploads a CSV to s3://<bucket>/trends/<key>.csv with public-read ACL.
+ * @param {string} key     Date key like '20250423'
+ * @param {Array<Object>} rows  Array of DB rows to stringify into CSV
+ * @returns {string} Public URL of the uploaded CSV
+ */
+async function uploadTrendsCsv(key, rows) {
+    // Convert rows to CSV string (includes header)
+    const csv = stringify(rows, { header: true });
+    const cmd = new PutObjectCommand({
+        Bucket: process.env.S3_BUCKET_NAME,
+        Key: `trends/${key}.csv`,
+        Body: csv,
+        ContentType: 'text/csv',
+        ACL: 'public-read'
+    });
+    await s3.send(cmd);
+    return `${process.env.S3_BASE_URL}/${key}.csv`;
+}
+
+module.exports = { uploadTrendsCsv };

server.js

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+// server.js
+require('dotenv').config();
+const express    = require('express');
+const mysql      = require('mysql2/promise');
+const bodyParser = require('body-parser');
+const path       = require('path');
+const axios      = require('axios');
+const { uploadTrendsCsv } = require('./s3');
+
+const app  = express();
+const PORT = process.env.PORT || 3000;
+
+// In-memory shift counters
+const shiftCounters = {};
+
+// Helper: format a Date in EST as SQL DATETIME string
+function formatDateEST(date) {
+  const pad = n => n.toString().padStart(2, '0');
+  return `${date.getFullYear()}-${pad(date.getMonth()+1)}-${pad(date.getDate())} ` +
+      `${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(date.getSeconds())}`;
+}
+
+// Helper: format a Date in EST as ISO-like string (no “Z”)
+function isoStringEST(date) {
+  const pad = n => n.toString().padStart(2, '0');
+  return `${date.getFullYear()}-${pad(date.getMonth()+1)}-${pad(date.getDate())}` +
+      `T${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(date.getSeconds())}`;
+}
+
+// Compute heat index (NOAA formula)
+function computeHeatIndex(T, R) {
+  const [c1,c2,c3,c4,c5,c6,c7,c8,c9] =
+      [-42.379,2.04901523,10.14333127,-0.22475541,-0.00683783,
+        -0.05481717,0.00122874,0.00085282,-0.00000199];
+  const HI = c1 + c2*T + c3*R + c4*T*R
+      + c5*T*T + c6*R*R + c7*T*T*R
+      + c8*T*R*R + c9*T*T*R*R;
+  return Math.round(HI * 100) / 100;
+}
+
+// Determine shift info in EST
+function getShiftInfo(now) {
+  const estNow = new Date(now.toLocaleString('en-US', { timeZone: 'America/New_York' }));
+  const [h,m] = [estNow.getHours(), estNow.getMinutes()];
+  let shift, shiftStart = new Date(estNow);
+
+  if (h > 7 || (h === 7 && m >= 0)) {
+    if (h < 17 || (h === 17 && m < 30)) {
+      shift = 'Day';
+      shiftStart.setHours(7,0,0,0);
+    } else {
+      shift = 'Night';
+      shiftStart.setHours(17,30,0,0);
+    }
+  } else {
+    shift = 'Night';
+    shiftStart.setDate(shiftStart.getDate() - 1);
+    shiftStart.setHours(17,30,0,0);
+  }
+
+  const key = `${shift}-${shiftStart.toISOString().slice(0,10)}-` +
+      `${shiftStart.getHours()}${shiftStart.getMinutes()}`;
+  return { shift, shiftStart, key, estNow };
+}
+
+// MariaDB connection pool
+const pool = mysql.createPool({
+  host:               process.env.DB_HOST,
+  port:               parseInt(process.env.DB_PORT, 10) || 3306,
+  user:               process.env.DB_USER,
+  password:           process.env.DB_PASSWORD,
+  database:           process.env.DB_NAME,
+  waitForConnections: true,
+  connectionLimit:    10,
+  queueLimit:         0,
+  connectTimeout:     10000,
+  enableKeepAlive:    true,
+  keepAliveInitialDelay: 10000,
+});
+
+// Ensure readings table exists
+(async () => {
+  const createSQL = `
+    CREATE TABLE IF NOT EXISTS readings (
+      id INT AUTO_INCREMENT PRIMARY KEY,
+      dockDoor INT NOT NULL,
+      direction VARCHAR(10) NOT NULL,
+      timestamp DATETIME NOT NULL,
+      temperature DOUBLE,
+      humidity DOUBLE,
+      heatIndex DOUBLE
+    );
+  `;
+  await pool.execute(createSQL);
+})();
+
+// SSE setup
+let clients = [];
+app.get('/api/stream', (req, res) => {
+  res.set({
+    'Content-Type':  'text/event-stream',
+    'Cache-Control': 'no-cache',
+    Connection:      'keep-alive'
+  });
+  res.flushHeaders();
+  clients.push(res);
+  req.on('close', () => { clients = clients.filter(c => c !== res); });
+});
+function broadcast(event, data) {
+  const msg = `event: ${event}\ndata: ${JSON.stringify(data)}\n\n`;
+  clients.forEach(c => c.write(msg));
+}
+
+// Middleware & static files
+app.use(bodyParser.json());
+app.use(express.static(path.join(__dirname, 'public')));
+
+// Dual-reading POST endpoint
+app.post('/api/readings', async (req, res) => {
+  try {
+    console.log('🔔 POST /api/readings body:', req.body);
+    const { inbound = {}, outbound = {} } = req.body;
+    const { dockDoor: inDoor, temperature: inTemp, humidity: inHum } = inbound;
+    const { dockDoor: outDoor, temperature: outTemp, humidity: outHum } = outbound;
+
+    // Validate inputs
+    if ([inDoor, inTemp, inHum, outDoor, outTemp, outHum].some(v => v === undefined)) {
+      return res.status(400).json({ error: 'Missing one of inbound/outbound fields' });
+    }
+
+    // Compute heat indices
+    const hiIn  = computeHeatIndex(inTemp, inHum);
+    const hiOut = computeHeatIndex(outTemp, outHum);
+
+    // Shift & period logic
+    const { shift, shiftStart, key, estNow } = getShiftInfo(new Date());
+    shiftCounters[key] = (shiftCounters[key] || 0) + 1;
+    const period = shiftCounters[key];
+
+    // Prepare EST timestamps
+    const sqlTimestamp       = formatDateEST(estNow);
+    const broadcastTimestamp = isoStringEST(estNow);
+
+    // Insert readings into DB
+    const insertSQL = `
+      INSERT INTO readings
+        (dockDoor, direction, timestamp, temperature, humidity, heatIndex)
+      VALUES (?, ?, ?, ?, ?, ?)
+    `;
+    await pool.execute(insertSQL, [inDoor, 'inbound',  sqlTimestamp, inTemp, inHum, hiIn]);
+    await pool.execute(insertSQL, [outDoor, 'outbound', sqlTimestamp, outTemp, outHum, hiOut]);
+
+    // Broadcast via SSE (EST)
+    broadcast('new-reading', {
+      dockDoor:    inDoor,
+      direction:   'inbound',
+      timestamp:   broadcastTimestamp,
+      temperature: inTemp,
+      humidity:    inHum,
+      heatIndex:   hiIn
+    });
+    broadcast('new-reading', {
+      dockDoor:    outDoor,
+      direction:   'outbound',
+      timestamp:   broadcastTimestamp,
+      temperature: outTemp,
+      humidity:    outHum,
+      heatIndex:   hiOut
+    });
+
+    // Generate and upload today's CSV, get URL
+    const dateKey = `${estNow.getFullYear()}${String(estNow.getMonth()+1).padStart(2,'0')}${String(estNow.getDate()).padStart(2,'0')}`;
+    const [rows] = await pool.execute(
+        `SELECT * FROM readings
+         WHERE DATE(timestamp) = CURDATE()
+         ORDER BY timestamp ASC`
+    );
+    let csvUrl = null;
+    try {
+      csvUrl = await uploadTrendsCsv(dateKey, rows);
+    } catch (uploadErr) {
+      console.error('Failed to upload CSV to S3:', uploadErr);
+    }
+
+    // Flat JSON Slack payload with CSV URL
+    const slackPayload = {
+      text:                'New temperature readings recorded',
+      inbound_dockDoor:    inDoor,
+      inbound_temperature: inTemp,
+      inbound_humidity:    inHum,
+      hiIn,
+      outbound_dockDoor:    outDoor,
+      outbound_temperature: outTemp,
+      outbound_humidity:    outHum,
+      hiOut,
+      shift,
+      period,
+      timestamp:           broadcastTimestamp,
+      csvUrl               // include the CSV download URL
+    };
+    console.log('🛠️  Slack payload:', slackPayload);
+    await axios.post(process.env.SLACK_WEBHOOK_URL, slackPayload);
+
+    res.json({ success: true, shift, period, csvUrl });
+  } catch (err) {
+    console.error('❌ POST /api/readings error:', err);
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Return all readings
+app.get('/api/readings', async (req, res) => {
+  try {
+    const [rows] = await pool.execute(`SELECT * FROM readings ORDER BY timestamp ASC`);
+    res.json(rows);
+  } catch (err) {
+    console.error('❌ GET /api/readings error:', err);
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// Export CSV of all readings
+app.get('/api/export', async (req, res) => {
+  try {
+    const [rows] = await pool.execute(`SELECT * FROM readings ORDER BY timestamp ASC`);
+    res.setHeader('Content-disposition', 'attachment; filename=readings.csv');
+    res.set('Content-Type', 'text/csv');
+    res.write('id,dockDoor,direction,timestamp,temperature,humidity,heatIndex\n');
+    rows.forEach(r => {
+      const ts = (r.timestamp instanceof Date) ? formatDateEST(r.timestamp) : r.timestamp;
+      res.write(`${r.id},${r.dockDoor},${r.direction},${ts},${r.temperature},${r.humidity},${r.heatIndex}\n`);
+    });
+    res.end();
+  } catch (err) {
+    console.error('❌ GET /api/export error:', err);
+    res.status(500).send(err.message);
+  }
+});
+
+// Start server
+app.listen(PORT, () => {
+  console.log(`Server running on http://localhost:${PORT}`);
+});