Reverb nation check upcoming shows

reverbnation-shows.js

// made this because I got tired of trying to scroll on a website that used this widget.
// only tested on node 10.1.0
'use strict';
var TINROOF_WIDGET_URL = 'https://www.reverbnation.com/widget_code/html_widget/venue_1008205?widget_id=52';
var https = require('https');

// allow optional `--json` arg to just display the json;
var handler = displayData;
if (process.argv[2] === '--json') {
    handler = saveJson;
}
getData(handler);

function getData(onDataLoaded) {
    // make an HTTP request to get the widget HTML
    https
        .request(TINROOF_WIDGET_URL, function(res) {
            res.setEncoding('utf8');
            var response = '';
            res.on('data', function(chunk) {
                response += chunk;
            });
            res.on('end', function() {
                onDataLoaded(parseHTML(response));
            });
        })
        .on('error', function(err) {
            console.error(`something blew up: ${err.message}`);
        })
        .end();
}

function saveJson(data) {
    // gotta show those performers
    console.dir(data, {depth: 3});
}

function parseHTML(txt) {
    // parse the widget html for the json payload; parse the json too
    txt = txt
        .split('<script type="application/ld+json">')
        .pop()
        .split('</script>')
        .shift()
        .trim();
    return JSON.parse(txt);
}

function displayData(data) {
    data.forEach(function(event) {
        console.log(`
Name: ${event.name}
Performer: ${event.performer.map(formatPerformer).join()}
Date: ${event.startDate}
Link: ${event.url}`);
    });
}

function formatPerformer(performer) {
    return performer.name;
}