314 lines
12 KiB
JavaScript
314 lines
12 KiB
JavaScript
// 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 = {};
|
||
|
||
// ─── Helpers ──────────────────────────────────────────────────────────────────
|
||
// pad to two digits
|
||
function pad2(n) {
|
||
return n.toString().padStart(2, '0');
|
||
}
|
||
|
||
// Format epoch_ms → "M/D/YY @HH:mm" (24-hour) in America/New_York
|
||
function formatForSlack(epoch) {
|
||
return new Date(epoch).toLocaleString('en-US', {
|
||
timeZone: 'America/New_York',
|
||
month: 'numeric',
|
||
day: 'numeric',
|
||
year: '2-digit',
|
||
hour12: false,
|
||
hour: '2-digit',
|
||
minute: '2-digit'
|
||
}).replace(',', ' @');
|
||
}
|
||
|
||
// NOAA heat-index 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 Day/Night shift & period key from epoch_ms
|
||
function getShiftInfo(epoch) {
|
||
// Convert to EST by string-round-trip
|
||
const estString = new Date(epoch)
|
||
.toLocaleString('en-US', { timeZone: 'America/New_York' });
|
||
const est = new Date(estString);
|
||
const h = est.getHours(), m = est.getMinutes();
|
||
let shift, start = new Date(est);
|
||
|
||
if (h > 7 || (h === 7 && m >= 0)) {
|
||
if (h < 17 || (h === 17 && m < 30)) {
|
||
shift = 'Day'; start.setHours(7, 0, 0, 0);
|
||
} else {
|
||
shift = 'Night'; start.setHours(17, 30, 0, 0);
|
||
}
|
||
} else {
|
||
shift = 'Night';
|
||
start.setDate(start.getDate() - 1);
|
||
start.setHours(17, 30, 0, 0);
|
||
}
|
||
|
||
const key = `${shift}-${start.toISOString().slice(0,10)}-${start.getHours()}${start.getMinutes()}`;
|
||
return { shift, key, estNow: est };
|
||
}
|
||
|
||
// Fetch current Baltimore weather
|
||
async function fetchCurrentWeather() {
|
||
const key = process.env.WEATHER_API_KEY, zip = process.env.ZIP_CODE;
|
||
if (!key || !zip) return 'Unavailable';
|
||
try {
|
||
const { data } = await axios.get(
|
||
'https://api.openweathermap.org/data/2.5/weather',
|
||
{ params: { zip:`${zip},us`, appid:key, units:'imperial' } }
|
||
);
|
||
const desc = data.weather[0].description.replace(/^\w/,c=>c.toUpperCase());
|
||
const hi = Math.round(data.main.temp_max);
|
||
const hum = data.main.humidity;
|
||
return `${desc}. Hi of ${hi}, Humidity ${hum}%`;
|
||
} catch (e) {
|
||
console.error('Weather API error:', e.message);
|
||
return 'Unavailable';
|
||
}
|
||
}
|
||
|
||
// ─── MariaDB Pool & Table Setup ───────────────────────────────────────────────
|
||
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
|
||
});
|
||
|
||
(async () => {
|
||
// Create table with epoch_ms only
|
||
await pool.execute(`
|
||
CREATE TABLE IF NOT EXISTS readings (
|
||
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
|
||
location VARCHAR(20) NOT NULL,
|
||
stationDockDoor VARCHAR(10) NOT NULL,
|
||
epoch_ms BIGINT NOT NULL,
|
||
temperature DOUBLE,
|
||
humidity DOUBLE,
|
||
heatIndex DOUBLE,
|
||
INDEX idx_time (epoch_ms),
|
||
INDEX idx_loc (location)
|
||
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
|
||
`);
|
||
})();
|
||
|
||
// ─── Middleware & Static ─────────────────────────────────────────────────────
|
||
app.use(bodyParser.json());
|
||
app.use(express.static(path.join(__dirname,'public'), { index:'heatmap.html' }));
|
||
|
||
// ─── 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: ${JSON.stringify(data)}\n\n`;
|
||
clients.forEach(c=>c.write(msg));
|
||
}
|
||
|
||
// ─── Dual Dock-Door Endpoint ───────────────────────────────────────────────────
|
||
app.post('/api/readings', async (req,res) => {
|
||
try {
|
||
const { inbound={}, outbound={} } = req.body;
|
||
const { dockDoor: inD, temperature: inT, humidity: inH } = inbound;
|
||
const { dockDoor: outD, temperature: outT, humidity: outH } = outbound;
|
||
if ([inD,inT,inH,outD,outT,outH].some(v=>v==null)) {
|
||
return res.status(400).json({ error: 'Missing fields' });
|
||
}
|
||
|
||
const epoch = Date.now();
|
||
const hiIn = computeHeatIndex(inT, inH);
|
||
const hiOut = computeHeatIndex(outT, outH);
|
||
const { shift, key, estNow } = getShiftInfo(epoch);
|
||
shiftCounters[key] = (shiftCounters[key]||0) + 1;
|
||
const period = shiftCounters[key];
|
||
const slackTs = formatForSlack(epoch);
|
||
|
||
// Insert inbound + outbound
|
||
const sql = `
|
||
INSERT INTO readings(location,stationDockDoor,epoch_ms,temperature,humidity,heatIndex)
|
||
VALUES(?,?,?,?,?,?)
|
||
`;
|
||
await pool.execute(sql, ['Inbound', String(inD), epoch, inT, inH, hiIn]);
|
||
await pool.execute(sql, ['Outbound', String(outD), epoch, outT, outH, hiOut]);
|
||
|
||
// SSE broadcast
|
||
broadcast('new-reading', {
|
||
location: 'Inbound',
|
||
stationDockDoor: String(inD),
|
||
timestamp: slackTs,
|
||
temperature: inT,
|
||
humidity: inH,
|
||
heatIndex: hiIn
|
||
});
|
||
broadcast('new-reading', {
|
||
location: 'Outbound',
|
||
stationDockDoor: String(outD),
|
||
timestamp: slackTs,
|
||
temperature: outT,
|
||
humidity: outH,
|
||
heatIndex: hiOut
|
||
});
|
||
|
||
// CSV upload
|
||
const y=estNow.getFullYear(), m=pad2(estNow.getMonth()+1), d=pad2(estNow.getDate());
|
||
const dateKey=`${y}${m}${d}`;
|
||
const [rows] = await pool.execute(`
|
||
SELECT * FROM readings
|
||
WHERE DATE(FROM_UNIXTIME(epoch_ms/1000))=CURDATE()
|
||
ORDER BY epoch_ms
|
||
`);
|
||
let csvUrl=null;
|
||
try { csvUrl = await uploadTrendsCsv(dateKey, rows); }
|
||
catch(e){ console.error('CSV upload error:', e); }
|
||
|
||
// Slack message
|
||
const weather = await fetchCurrentWeather();
|
||
const text =
|
||
`*_${shift} shift Period ${period} dock/trailer temperature checks for ${slackTs}_*\n`+
|
||
`*_Current Weather Forecast for Baltimore: ${weather}_*\n\n`+
|
||
`*_⬇️ Inbound Dock Door 🚛 :_* ${inD}\n`+
|
||
`*_Temp:_* ${inT} °F 🌡️\n`+
|
||
`*_Humidity:_* ${inH} % 💦\n`+
|
||
`*_Heat Index:_* ${hiIn} °F 🥵\n\n`+
|
||
`*_⬆️ Outbound Dock Door 🚛 :_* ${outD}\n`+
|
||
`*_Temp:_* ${outT} °F 🌡️\n`+
|
||
`*_Humidity:_* ${outH} % 💦\n`+
|
||
`*_Heat Index:_* ${hiOut} °F 🥵`;
|
||
|
||
await axios.post(process.env.SLACK_WEBHOOK_URL, { text }, {
|
||
headers:{ 'Content-Type':'application/json' }
|
||
});
|
||
|
||
res.json({ success:true, shift, period, csvUrl });
|
||
} catch (err) {
|
||
console.error('POST /api/readings error:', err);
|
||
res.status(500).json({ error: err.message });
|
||
}
|
||
});
|
||
|
||
// ─── Area/Mod Endpoint ───────────────────────────────────────────────────────
|
||
app.post('/api/area-readings', async (req,res) => {
|
||
try {
|
||
const { area, stationCode, temperature:T, humidity:H } = req.body;
|
||
if (!area||!stationCode||T==null||H==null) {
|
||
return res.status(400).json({ error:'Missing fields' });
|
||
}
|
||
|
||
const epoch = Date.now();
|
||
const hi = computeHeatIndex(T, H);
|
||
const { shift, key, estNow } = getShiftInfo(epoch);
|
||
const slackTs = formatForSlack(epoch);
|
||
|
||
await pool.execute(`
|
||
INSERT INTO readings(location,stationDockDoor,epoch_ms,temperature,humidity,heatIndex)
|
||
VALUES(?,?,?,?,?,?)
|
||
`, [area, stationCode, epoch, T, H, hi]);
|
||
|
||
broadcast('new-area-reading', {
|
||
location: area,
|
||
stationDockDoor: stationCode,
|
||
timestamp: slackTs,
|
||
temperature: T,
|
||
humidity: H,
|
||
heatIndex: hi
|
||
});
|
||
|
||
const y=estNow.getFullYear(), m=pad2(estNow.getMonth()+1), d=pad2(estNow.getDate());
|
||
const dateKey=`${y}${m}${d}`;
|
||
const [rows] = await pool.execute(`
|
||
SELECT * FROM readings
|
||
WHERE DATE(FROM_UNIXTIME(epoch_ms/1000))=CURDATE()
|
||
ORDER BY epoch_ms
|
||
`);
|
||
let csvUrl=null;
|
||
try { csvUrl = await uploadTrendsCsv(dateKey, rows); }
|
||
catch(e){ console.error('CSV upload error:', e); }
|
||
|
||
const weather = await fetchCurrentWeather();
|
||
const text =
|
||
`*_${shift} shift ${area} temp check for ${slackTs}_*\n`+
|
||
`*_Current Weather Forecast for Baltimore: ${weather}_*\n\n`+
|
||
`*_${area.toUpperCase()} station:_* ${stationCode}\n`+
|
||
`*_Temp:_* ${T} °F 🌡️\n`+
|
||
`*_Humidity:_* ${H} % 💦\n`+
|
||
`*_Heat Index:_* ${hi} °F 🥵`;
|
||
|
||
await axios.post(process.env.SLACK_WEBHOOK_URL, { text }, {
|
||
headers:{ 'Content-Type':'application/json' }
|
||
});
|
||
|
||
res.json({ success:true, csvUrl });
|
||
} catch (err) {
|
||
console.error('POST /api/area-readings error:', err);
|
||
res.status(500).json({ error: err.message });
|
||
}
|
||
});
|
||
|
||
// ─── Fetch & Export ─────────────────────────────────────────────────────────
|
||
app.get('/api/readings', async (req,res) => {
|
||
try {
|
||
const [rows] = await pool.execute(`SELECT * FROM readings ORDER BY epoch_ms`);
|
||
res.json(rows);
|
||
} catch (err) {
|
||
console.error('GET /api/readings error:', err);
|
||
res.status(500).json({ error: err.message });
|
||
}
|
||
});
|
||
app.get('/api/export', async (req,res) => {
|
||
try {
|
||
const [rows] = await pool.execute(`SELECT * FROM readings ORDER BY epoch_ms`);
|
||
res.setHeader('Content-disposition','attachment; filename=readings.csv');
|
||
res.set('Content-Type','text/csv');
|
||
res.write('id,location,stationDockDoor,epoch_ms,temperature,humidity,heatIndex\n');
|
||
rows.forEach(r => {
|
||
res.write(
|
||
`${r.id},${r.location},${r.stationDockDoor},${r.epoch_ms},` +
|
||
`${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}`);
|
||
});
|