Blaseball terminal stream (NodeJS)

blaseball-terminal-readme.md

Prerequisites

• NodeJS 12+
• Chalk for nice terminal colors

Running it

node blaseball-terminal.js
# run and keep the feed alive indefinitely
node blaseball-termina.js --follow
# >
# 5 - 1 | San Francisco Lovers🦇 @ Charleston Shoe Thieves: Strike, swinging. 0-1
# 8 - 2 | Miami Dale🦇 @ Chicago Firefighters: Beck Whitney batting for the Dale.
# 3 - 4 | Hawai'i Fridays @ Canada Moist Talkers: Game over.

blaseball-terminal.js

const https = require('https');
// easier terminal colors
const chalk = require('chalk');

const baseUrl = 'https://www.blaseball.com';
const streamData = `${baseUrl}/events/streamData`;
const args = [process.argv[2], process.argv[3]];
let follow = args.includes('--follow');
let clear = args.includes('--clear');

run();

function run() {
    const req = https.get(streamData, res => {
        // track the current incoming message
        let currentMessage = '';

        // something blew up
        res.on('error', err => {
            console.error('F');
            console.error(err);
        });

        // attempt to parse incoming JSON chunk
        res.on('data', chunk => {
            // deal with `data: ` prefix in blaseball data stream
            const msg = chunk.toString && chunk.toString('utf-8');
            if (msg.startsWith('data: {')) {
                // drop the prefix
                clear && console.clear();
                console.log(`Latest update: ${new Date().toJSON()}`);
                currentMessage = msg.split('data: ').pop();
            } else if (currentMessage) {
                // append the rest of the chunked message
                currentMessage += msg;
            }

            try {
                // try to parse the current message
                let data = JSON.parse(currentMessage);

                // read the games in the data list
                let gamesSchedule = data.value.games.schedule;
                for (let game of gamesSchedule) {
                    // form up teamnames with fancy hex colors
                    let awayTeam = chalk.hex(game.awayTeamColor)(game.awayTeamName);
                    // add a bat emoji to show who's doing the batting
                    let inning = '';
                    if (!game.gameComplete && game.awayBatterName) {
                        awayTeam += '🦇';
                        inning = ' | ˆ' + (game.inning + 1);
                    }
                    let homeTeam = chalk.hex(game.homeTeamColor)(game.homeTeamName);
                    if (!game.gameComplete && game.homeBatterName) {
                        homeTeam += '🦇';
                        inning = ' | ˬ' + (game.inning + 1);
                    }
                    // print the message

                    let txt = `${game.awayScore} - ${game.homeScore}${inning} | ${awayTeam} @ ${homeTeam}: ${game.lastUpdate}`;
                    console.log(txt);
                }
                // clear the parsed message
                currentMessage = '';
            } catch (e) {
                // console.log('waiting on full response...');
            }
        });

        res.on('end', () => {
            if (follow) {
                run();
            }
        });
    });

    // send the request
    req.end();
}