Tweet Tac Toe

tweettactoe.js

'use strict';
const Twitter = require('twitter');
const TicTacToe = require('tictactoe-agent');

const USERNAME = 'USERNAME';

const client = new Twitter({
    consumer_key: 'TWITTER CONSUMER KEY',
    consumer_secret: 'TWITTER CONSUMER SECRET',
    access_token_key: 'TWITTER ACCESS TOKEN',
    access_token_secret: 'TWITTER ACCESS SECRET',
});

const games = {};

function doMove(game, player, index) {
    let model;
    if (typeof index !== 'number') {
        model = new TicTacToe.Model(game, player);
        index = model.getRecommendation().index;
    }
    console.log('[DoMove]: ' + player + ' wants to move ' + index + ' with game: ' + game);
    game = game.slice(0, index) + player + game.slice(index + 1);
    console.log('[DoMove]: With Result: ' + game);
    model = new TicTacToe.Model(game, player);
    const winner = model.winnerInfo(model.lines());
    if (winner) return {
        game, winner: winner.winner
    };
    return {
        game, winner: false
    };
}

function handleWin(playerWon, tweet) {
    if (playerWon) {
        client.post('statuses/update', {
            status: '@' + tweet.user.screen_name + ': You Win!!!',
            in_reply_to_status_id: tweet.id,
        }, tweetCallback);
    } else {
        client.post('statuses/update', {
            status: '@' + tweet.user.screen_name + ': You Lost :(',
            in_reply_to_status_id: tweet.id,
        }, tweetCallback);
    }
}

function gameboardToString(game) {
    const spots = game.split('');
    return [
        spots.slice(0, 3),
        spots.slice(3, 6),
        spots.slice(6, 9),
    ].map(spots2 => spots2.join('|')).join('\n_____\n');
}

function tweetCallback(error, tweet, response) {
	if (!error) {
		console.log('Tweeted: ' + tweet.text);
	}
}

client.stream('statuses/filter', {
    track: '@test4ari'
}, stream => {
    stream.on('error', err => {
        throw err;
    });
    stream.on('data', tweet => {
        console.log(tweet.text);
        const parts = tweet.text.toLowerCase().split(' ');
        if (parts[0].slice(0, 10) !== '@' + USERNAME) return;
        switch (parts[1]) {
            case 'start':
                games[tweet.user.id_str] = '---------';
                client.post('statuses/update', {
                    status: '@' + tweet.user.screen_name + ': respond with `@' + USERNAME + ': move X`. X is your move, as a num 1-9, from top left to bottom right. You move first.',
                    in_reply_to_status_id: tweet.id,
                }, tweetCallback);
                break;
            case 'move':
                if (!games[tweet.user.id_str]) return;
                const index = parseInt(parts[2]) - 1; // Make it from 1-9 vs. 0-8
                let ret = doMove(games[tweet.user.id_str], 'X', index);
                if (ret.winner) {
                    delete games[tweet.used.id_str];
                    return handleWin(ret.winner === 'X', tweet);
                }
                ret = doMove(ret.game, 'O');
                if (ret.winner) {
                    delete games[tweet.user.id_str];
                    return handleWin(ret.winner == 'X', tweet);
                }
		if (ret.game.indexOf('-') === -1) { // Stalemate!
			client.post('statuses/update', {
				status: '@' + tweet.user.screen_name + ': Stalemate!!!',
				in_reply_to_status_id: tweet.id,
			}, tweetCallback);
			delete games[tweet.user.id];
			return;
		}
		games[tweet.user.id_str] = ret.game;
                client.post('statuses/update', {
                    status: '@' + tweet.user.screen_name + ': Your move. Gameboard:\n' + gameboardToString(ret.game),
                    in_reply_to_status_id: tweet.id,
                }, tweetCallback);
                break;
        }
    });
});