255 lines
11 KiB
JavaScript
255 lines
11 KiB
JavaScript
var express = require("express");
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var hbs = require('express-hbs');
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require('handlebars-form-helpers').register(hbs.handlebars);
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var nodemailer = require('nodemailer');
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var courtsopenUtils = require('./courtsopenUtils.js');
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var bodyParser = require("body-parser");
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var app = express();
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var winston = require('winston');
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winston.add(winston.transports.File, { filename: './logs/courtsopen.log', maxsize: 5000000 }); // 5MB
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// Setup email
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var transporter = nodemailer.createTransport({
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service: 'Gmail',
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auth: {
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user: 'alertmonitorfl@gmail.com',
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pass: 'ZPW!KdxkdTSmyH99'
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}
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});
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var mailOptions = {
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from: 'Alert Monitor <alertmonitorfl@gmail.com>',
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//to: 'jody@kaplon.us,don@gettner.com',
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to: 'jody@kaplon.us',
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subject: 'Device did not wish me a GoodMorning or GoodEvening',
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};
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var pg = require("pg");
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var conString = "postgres://courtsopen:courtsopen@db/courtsopen";
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app.use(bodyParser.json()); // Needed for JSON POST requests from Particle Cores.
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app.use(bodyParser.urlencoded({ extended: false })); // Needed for web POST requests from edit form.
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// Use `.hbs` for extensions and find partials in `views/partials`.
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app.engine('hbs', hbs.express4({
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partialsDir: __dirname + '/views/partials'
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}));
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app.set('view engine', 'hbs');
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app.set('views', __dirname + '/views');
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var favicon = require('serve-favicon');
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app.use(favicon(__dirname + '/assets/favicon.ico')); // Try this before setting static dir.
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app.use(express.static('assets'));
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/*******************************************************************************************************
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With this express setup, ordering of routes matters!!! It's 1st-come-1st-served.
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If a more specific route is placed after a more general route, the general route will be chosen.
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Not like nginx where the most specific match always wins.
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Using express.Router() in express-4 might fix this, as would converting to hapi...
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But, for now, order routes like this:
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- static routes, ordered more specific to less specific
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- dynamic routes, ordered more specific to less specific
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********************************************************************************************************/
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// temp testing for static home page.
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app.get('/home', function(req, res) {
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winston.info('GET /home');
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res.render('home', {}, function(err, html) {
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if(err !== null) {
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winston.error(err);
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} else {
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res.send(html);
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}
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});
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});
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app.get('/', function(req, res){
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winston.info("GET /");
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pg.connect(conString, function(err, client, done) {
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if(err) {
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return winston.error('error fetching client from pool', err);
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}
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var devIndexQry =
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"select status, published_at " +
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"from alerts " +
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"where status in ('Open', 'Closed') " +
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"order by published_at desc " +
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"limit 2"
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client.query(devIndexQry, function(err, result) {
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//call `done()` to release the client back to the pool
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done();
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if(err) {
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return winston.error('error running query', err);
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}
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// Loop over elements in rows array, convert ugly UTC times to pretty local times.
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result.rows.forEach(function(row){
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row.pubdate = courtsopenUtils.getLocDateFromUTC(row.published_at);
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row.pubtime = courtsopenUtils.getLocTimeFromUTC(row.published_at);
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if(row.status.toLowerCase().indexOf('closed') > -1){
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row.statusclass = 'closed';
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} else { row.statusclass = 'open'; }
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});
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res.render('index', {values: result.rows}, function(err, html) {
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if(err !== null) {
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winston.error(err);
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} else {
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res.send(html);
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}
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});
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});
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});
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});
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app.post('/', function(req, res){
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var postEvent = req.body.postEvent;
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var source = req.body.source;
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winston.info(req.body);
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// If it's stripped down JSON sent by cell modem, there won't be a req.body.data key w/full-nested JSON as value!!!
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// ???how to fix???
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// If post body includes coreid and published_at, assume it's from a particle devcie and parse accordingly.
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if (req.body.coreid !== undefined && req.body.published_at !== undefined) {
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var innerDataJSON = JSON.parse(req.body.data);
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var status = JSON.stringify(innerDataJSON.status, null, 4).slice(1,-1);
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var coreid = JSON.stringify(req.body.coreid, null, 4).slice(1,-1);
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var pubAt = JSON.stringify(req.body.published_at, null, 4).slice(1,-1);
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pg.connect(conString, function(err, client, done) {
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if(err) { return winston.error('error fetching client from pool', err); }
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client.query(
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"INSERT INTO alerts (origjson, coreid, published_at, status) VALUES ($1, $2, $3, $4);",
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[JSON.stringify(req.body, null, 4), coreid, pubAt, status]
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);
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done();
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});
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} else { // parse for minimal data from cell modem.
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var deviceid = JSON.stringify(req.body.data, null, 4).slice(1,4);
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var statusCode = JSON.stringify(req.body.data, null, 4).slice(5,7);
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var statusFromCode;
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switch (statusCode) {
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case "01": statusFromCode = "Open"; break;
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case "02": statusFromCode = "Closed"; break;
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case "03": statusFromCode = "GoodMorning"; break;
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case "04": statusFromCode = "GoodEvening"; break;
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default: statusFromCode = "UnknownStatus"
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};
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var received_at = new Date(Date.now());
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received_at = received_at.toISOString();
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winston.info(statusFromCode + ' ' + received_at);
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pg.connect(conString, function(err, client, done) {
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if(err) { return winston.error('error fetching client from pool', err); }
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client.query(
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"INSERT INTO alerts (origjson, coreid, published_at, status) VALUES ($1, $2, $3, $4);",
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[JSON.stringify(req.body, null, 4), deviceid, received_at, statusFromCode]
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);
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done();
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});
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}
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res.status(204).send('POST received');
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});
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app.get('/:loc', function(req, res) {
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var loc = req.params.loc;
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if (loc !== 'tt') {
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res.status(404).send('Not found');
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} else {
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// This is repeated code from app.get('/') handler.
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// TODO, refactor as exported function in courtsopenUtils.js.
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winston.info("GET /tt");
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pg.connect(conString, function(err, client, done) {
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if(err) {
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return winston.error('error fetching client from pool', err);
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}
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var devIndexQry =
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"select status, published_at " +
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"from alerts " +
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"where status in ('Open', 'Closed') " +
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"and coreid = '300029000347343339373536' " +
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"order by published_at desc " +
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"limit 2"
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client.query(devIndexQry, function(err, result) {
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//call `done()` to release the client back to the pool
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done();
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if(err) {
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return winston.error('error running query', err);
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}
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// Loop over elements in rows array, convert ugly UTC times to pretty local times.
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result.rows.forEach(function(row){
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row.pubdate = courtsopenUtils.getLocDateFromUTC(row.published_at);
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row.pubtime = courtsopenUtils.getLocTimeFromUTC(row.published_at);
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if(row.status.toLowerCase().indexOf('closed') > -1){
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row.statusclass = 'closed';
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} else { row.statusclass = 'open'; }
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});
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res.render('index', {values: result.rows}, function(err, html) {
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if(err !== null) {
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winston.error(err);
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} else {
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res.send(html);
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}
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});
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});
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});
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}
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});
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app.get('/:loc/status', function(req, res) {
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var loc = req.params.loc;
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if (loc !== 'tt') {
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res.status(404).send('Not found');
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} else {
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winston.info('GET ' + loc + '/status');
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// Lookup most recent status from DB and return as JSON.
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pg.connect(conString, function(err, client, done) {
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if(err) {
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return winston.error('error fetching client from pool', err);
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}
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var mostRecentStatusQry =
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"select origjson " +
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"from alerts " +
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"where status in ('Open', 'Closed') " +
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"and coreid = '300029000347343339373536' " +
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"order by published_at desc " +
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"limit 1"
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client.query(mostRecentStatusQry, function(err, result) {
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//call `done()` to release the client back to the pool
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done();
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if(err) {
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return winston.error('error running query', err);
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}
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res.setHeader('Content-Type', 'application/json');
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res.send(JSON.stringify(result.rows[0].origjson));
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});
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});
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}
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});
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setInterval(function() {
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// Check every hour to see if GoodMorning or GoodEvening has gone missing.
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pg.connect(conString, function(err, client, done) {
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if(err) {
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return winston.error('error fetching client from pool', err);
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}
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var deadManQry = "select published_at from alerts where to_timestamp(published_at, 'YYYY-MM-DD HH24:MI:SS') > (now() - interval '14.5 hours') limit 1";
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client.query(deadManQry, function(err, result) {
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//call `done()` to release the client back to the pool
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done();
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if(err) {
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return winston.error('error running query', err);
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} else if (result.rowCount == 0) {
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mailOptions.text = "It's been too long since the last data transmission from device. \n\n";
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winston.info(mailOptions.text);
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// Don't include any other details for now, will need to change DB query to get details on last message received.
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//mailOptions.text = mailOptions.text + 'Status message, ' + status + '\n';
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//mailOptions.text = mailOptions.text + 'Published at, ' + courtsopenUtils.getLocDateFromUTC(pubAt) + ' ' + courtsopenUtils.getLocTimeFromUTC(pubAt) + '\n';
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transporter.sendMail(mailOptions, function(error, info){
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if(error){
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winston.error(error);
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}else{
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winston.info('Message sent: ' + info.response);
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}
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});
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}
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});
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});
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}, 60 * 60 * 1000);
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app.listen(3000, function() {
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winston.info("Started on PORT 3000");
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});
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