chatbort

chatbort.js

// yarn init
// yarn add -D schmavery/facebook-chat-api pos dotenv
// node chatbort.js

const fs = require('fs');
const login = require('facebook-chat-api');
const pos = require('pos');
const env = require('dotenv').config()

const firebaseConfig = {
    apiKey: env.apiKey,
    authDomain: env.authDomain,
    databaseURL: env.databaseURL,
    projectId: env.projectId,
    messagingSenderId: env.messagingSenderId
};

const facebookCredentials = {
    email: env.facebookEmail,
    password: env.facebookPassword
};

// Simple echo bot. Pushes chat messages to Firebase
login(facebookCredentials, (err, api) => {
    if(err) return console.error(err);

    api.setOptions({listenEvents: true});

    const tagger = new pos.Tagger();
    const tagsToIgnore = ['CC', 'DT', 'EX', 'IN', 'MD', 'PDT', 'PP$', 'PRP', 'SYM', 'TO', 'WDT', 'WP', 'WP$', 'WRB', ',', '.', ':', '$', '#', '"', '(', ')'];

    let words = [];
    let taggedWords = [];
    let frequency = {};
    var listener = api.listen((err, event) => {
        if(err) return console.error(err);

        api.markAsRead(event.threadID, (err) => {
            if(err) console.error(err);
        });

        switch(event.type) {
            case 'message':
                if(event.body === '/showcounts') {
                    api.sendMessage(JSON.stringify(frequency), event.threadID);
                    break;
                }

                words = new pos.Lexer().lex(event.body);
                taggedWords = tagger.tag(words);

                let text;
                frequency = taggedWords.reduce(function(curr, word) {
                    text = word[0].toLowerCase();
                    if (word.length && !tagsToIgnore.includes(word[1])) {
                        curr[text] = (curr[text] || 0) + 1;
                    }

                    return curr;
                }, frequency);

                break;
            default:
                console.log(event);
                break;
        }
    });
});