AMAbot.js

var http = require('http');

// Create the configuration
var config = {
    channels: ["##bottest", "#futurology", "#mybots"],
    server: "irc.snoonet.org",
    botName: "AMAbot"
};
var released = true;
start = "askreddit"
mode = "priority"
var subredditList = ["askreddit+AskHistorians+askscience+explainlikeimfive", "askmen+askwomen+askculinary", "futurology+philosophy+psychonaut+MachineLearning+learnprogramming", "all"];

// Get the lib
var irc = require("irc");

// Create the bot name
var bot = new irc.Client(config.server, config.botName, {
    channels: config.channels
});

// Listen for joins
bot.addListener("join", function(channel, who) {
    // Welcome them in!
    //bot.say(channel, who + "...dude...welcome back!");
});

// Listen for any message, PM said user when he posts
bot.addListener("message", function(from, to, text, message) {
    if (to == config.botName && from != config.botName){
        console.log(from, text)
        callback1 = function(output){
            bot.say(from, output);
        }
        setTimeout(function(){getSearch(text, false, subredditList, callback1);}, (released ? 0 : 4000));
    } else {
        if (text.toLowerCase().indexOf("!ask ") == 0){
            callback1 = function(output){
                bot.say(to, output);
            }
            setTimeout(function(){getSearch(text, true, subredditList, callback1);}, (released ? 0 : 4000));
        }
    }
});

// Listen for any message, say to him/her in the room
bot.addListener("message", function(from, to, text, message) {

});

function getSearch(question, slice, subreddits, callback1){
    if (slice){
        question2 = question.slice(5, question.length)
    }
    question2 = encodeURIComponent(question2)
    console.log(question)
    var options = {
      host: 'www.reddit.com',
      path: '/r/'+subreddits[0]+'/search.json?q=' + question2 + '&restrict_sr=on&sort=relevance&t=all',
      headers: {'user-agent': '/u/Noncomment IRC bot \'AMAbot\'; #futurology, #bottest'}
    };

    callback = function(response) {
      var str = '';

      //another chunk of data has been recieved, so append it to `str`
      response.on('data', function (chunk) {
        str += chunk;
      });

      //the whole response has been recieved, so we just print it out here
      response.on('end', function () {
        var search = JSON.parse(str);
        if (search.data.children.length < 1){
            if (subreddits.length>1){
                subreddits = subreddits.slice(1, subreddits.length);
                setTimeout(function(){getSearch(question, true, subreddits, callback1);}, 2000);
            } else {
                callback1("Sorry I don't know.");
            }
        } else {
            setTimeout(function(){getComment(search.data.children[0].data.permalink, callback1);}, 2000);
        }
      });
    }

    http.request(options, callback).end();
}

function getComment(permalink, callback1){
    console.log(permalink)
    var options = {
      host: 'www.reddit.com',
      path: permalink + ".json",
      headers: {'user-agent': '/u/Noncomment IRC bot \'AMAbot\'; #futurology, #bottest'}
    };

    callback = function(response) {
      var str = '';

      //another chunk of data has been recieved, so append it to `str`
      response.on('data', function (chunk) {
        str += chunk;
      });

      //the whole response has been recieved, so we just print it out here
      response.on('end', function () {
        var search = JSON.parse(str);
        var i = 0;
        var comments = search[1].data.children;
        while (i<comments.length){
            var comment = comments[i].data.body;
            console.log(comment);
            if (!(comment == "[deleted]") && comment.length < 500){
                callback1(comment);
                i = 0;
                break;
            }
            i++
        }
        if (i >= comments.length-1){
            callback1("Sorry this knowledge is forbidden.")
        }
      });
    }

    http.request(options, callback).end();
}