spread.js

const express = require('express');
const app = express();
const port = 3000;

const https = require('https');
const options = {
    hostname: 'ink.twetch.com',
    port: 443,
    path: '/twonks/market/sold',
    method: 'GET'
}

app.get('/:thing', (req, res) => {
    const twetchReq = https.request(options, twetchRes => {
        console.log(`statusCode: ${twetchRes.statusCode}`);
        var twetchData = '';
        twetchRes.on('data', chunk => {
            twetchData += chunk;
        })

        twetchRes.on('end', () => {
            var source = JSON.parse(twetchData);
            var groups = {};
            source.forEach((tx) => {
                var meta = JSON.parse(JSON.parse(tx.meta));
                groups[meta.title] = groups[meta.title] || {}
                
                var created = tx.created.split(' ')[0];
                groups[meta.title][created] = groups[meta.title][created] || []
                groups[meta.title][created].push(tx);
            });

            var result = {};
            Object.keys(groups).forEach(group => {
                Object.keys(groups[group]).forEach(date => {
                    var max = 0;
                    var min = 9999999999999999999999;
                    var sum = 0;
                    groups[group][date].forEach(tx => {
                        var price = tx.price;
                        if (price > max) {
                            max = price;
                        }
    
                        if (min > price) {
                            min = price;
                        }
    
                        sum += price;
                    })
                    result[group] = result[group] || []
                    result[group].push({
                        Date: date,
                        Open: groups[group][date][0].price,
                        High: max,
                        Low: min,
                        Volume: sum,
                        Close: groups[group][date][groups[group][date].length - 1].price
                    })
                })
            });

            res.send(result[req.params.thing]);
        })
    })

    twetchReq.on('error', error => {
        console.error(error)
    });

    twetchReq.end()
})

app.listen(port, () => {
    console.log(`Listening at http://localhost:${port}`);
})