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server.js
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server.js
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const express = require('express');
var request = require('request');
const pool = require('./db');
global.clientIP = '1';
var monitor;
const app = express(),
bodyParser = require("body-parser");
port = process.env.PORT || 3000;
const users = [];
app.use(bodyParser.json());
app.use(express.static(process.cwd() + "/my-app/dist/angular-nodejs-example/"));
app.get('/api/users', (req, res) => {
console.log("/api/user get invoked");
res.json(users);
});
app.post('/api/add_data', (req, res) => {
var message = req.body.monitor;
const addData = {
name: 'addWeather',
text: 'INSERT INTO test.search(history) VALUES($1) RETURNING *',
values: [message]
};
pool.connect((err, client, release) => {
if (err) {
console.log(err);
}
client.query(addData, (err, res) => {
release();
if (err) {
console.error("error in addData " + err.stack);
}
})
})
});
app.get('/api/query', (req, res) => {
var search = [];
const getData = {
name: 'get10',
text: 'SELECT * FROM test.search ORDER BY id DESC LIMIT 10'
};
pool.connect((err, client, release) => {
release();
if (err) {
console.log(err);
res.send("error");
}
client.query(getData, async (err, result) => {
if (err) {
return console.log(err);
}
for (let row in result.rows) {
var history = result.rows[row];
search.push(history);
}
console.log(search);
return res.send({"data": search});
})
})
});
app.post('/api/user', (req, res) => {
console.log("/api/user post got hit");
monitor = req.body;
var message = monitor.monitor;
console.log(message);
request.post({
url: 'http://' + clientIP + ':8080/lcd_print',
json: {
message: message
},
timeout: 5000
}, function (err, response) {
res.header('Access-Control-Allow-Origin', '*');
res.header("Content-Type", "application/json");
if (err) {
console.log(err);
if (err.code === 'EHOSTUNREACH') {
return res.send({"message": "LCD may not be online"});
} else {
return res.send({"message": "LCD may not be online"});
}
} else {
if (response.statusCode == 200) {
console.log("status code=" + response.statusCode);
console.log("status code=" + response.statusMessage);
return res.send({"message": "LCD is updated"});
} else if (response.statusCode !== 200) {
console.log("non 200 status code=" + response.statusCode);
}
}
})
});
app.get('/', (req, res) => {
res.sendFile(process.cwd() + "/my-app/dist/angular-nodejs-example/index.html")
});
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`)
});
app.get('/api/led_control/client_ip/:ip', (req, res) => {
var ip = req.params.ip;
clientIP = ip;
res.send(200);
console.log("Received IP is: " + clientIP);
});