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index.js
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index.js
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const express = require('express');
const handlebars = require('express-handlebars');
const fs = require('fs');
const csv = require('csv-parser');
const app = express();
const port = 12345;
let flightData = {};
let offset = 0;
app.engine('handlebars', handlebars());
app.set('view engine', 'handlebars');
app.use(express.static('static'));
fs.readdir('./data', (err, items) => {
if (err) throw err;
app.get('/', (request, response) => {
response.render('index', {
accessToken: fs.readFileSync('.cesium_access_token', 'UTF-8').trim(),
dataSources: items,
});
});
items.forEach((item) => {
flightData[item] = [];
fs.createReadStream(`./data/${item}`)
.pipe(csv())
.on('data', (row) => {
if (row.isflying != "true") return;
row.timestamp = new Date(row.timestamp).toISOString();
flightData[item].push(row.timestamp, parseFloat(row.longitude), parseFloat(row.latitude), parseFloat(row.altitude)+1642);
})
.on('end', () => {
app.get(`/data/${item}.json`, (request, response) => {
response.setHeader('Content-Type', 'application/json');
response.render('czml', {
layout: false,
flightData: JSON.stringify(flightData[item]),
intervalStart: flightData[item][0],
intervalEnd: flightData[item][flightData[item].length-4],
});
});
});
});
});
app.listen(port, () => {
console.log(`listening on ${port}.`);
});