Simple, and ineffective, bot for slack that tries to talk with you and find a github repo with provided query. Written using NodeJS and Botkit. Botkit is a required dependency.

gdg_zagreb_github_bot.js

var controller = require('botkit').slackbot();
var https = require("https");

var bot = controller.spawn({
  debug: true,
  token: "bot_token_goes_here"
});

bot.startRTM(function(err,bot,payload) {
  if (err) {
    throw new Error('Could not connect to Slack');
  } else {
    console.log("success");
  }
});

controller.hears('wifi', ['ambient'], function(bot, message) {
  console.log(message);

  if (message.text.indexOf("sexy") > -1) {
    bot.reply(message,
      "https://assets.infinum.co/assets/people/selfies/125-ae0e3f14011f78dadf0461367b617175.jpg");
  }

  bot.reply(message, "SSID: NeMozeNamNikoNista\n Password: uberpassword");
});

controller.hears(['github repo', 'github', 'repo'], ['ambient'],
  function(bot, message) {
    bot.startConversation(message, askRepo);
  });

var askRepo = function(response, convo) {
  convo.ask("What repo would you like me to find?", function(response, convo) {
    var text = response.text;
    convo.say("I'm looking for `" + text + "`");

    searchGithub(text, function(top_three) {
      convo['top_three'] = top_three;

      var count = top_three.length;
      var question = "";
      if (count == 0) {
        question = "Unfortunatelly, I found nothing :confounded:";
        convo.say(question);
      } else {
        question = "This is what I found. Which one would you like?";
        console.log(top_three);
        top_three.forEach(function(elem, index) {
          question += "\n" + (index + 1) + ". " + elem.full_name;
        });
        convo.ask(question, exitStrategy);
      }
      convo.next();
    });
  });
}

var repoSelection = function(response, convo) {
  var index = parseInt(response.text) - 1;
  var top_three = convo['top_three'];
  if (index >= 0 && index <= top_three.length) {
    var selection = top_three[index];
    convo.say("Okay, displaying `" + selection.full_name + "`");
    convo.say("" + selection.html_url);
  } else {
    convo.ask("I can only understand numbers that I've displayed."
      + ":confounded: Could you repeat your entry?", exitStrategy);
  }
  convo.next();
}

var exitConvo = function(response, convo) {
  convo.say("Okay, goodbye!");
  convo.next();
}

var exitStrategy = [
  {
    pattern: "exit|done",
    callback: exitConvo
  },
  {
    default: true,
    callback: repoSelection
  }
]

function searchGithub(query, callback) {
  const GITHUB_API = 'api.github.com';
	const GITHUB_REPO_SEARCH = '/search/repositories?q=';

	var headers = {
		'User-Agent' : 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1'
	}
	var call = {
		host : GITHUB_API,
		path : GITHUB_REPO_SEARCH + escape(query),
		method: 'GET',
		headers : headers
	}

	var top_three = [];
	var request = https.get(call, function(response) {
		console.log(`STATUS: ${response.statusCode}`);
		console.log(`HEADERS: ${JSON.stringify(response.headers)}`);
		var bodyChunks = [];
		response.on('data', function(chunk) {
			bodyChunks.push(chunk);
		}).on('end', function() {
			var body = Buffer.concat(bodyChunks);
			var response = JSON.parse(body);
			if (response.total_count >= 3) {
				for(var i =0; i<3;i++) {
					top_three.push(response.items[i]);
				}
			}
			callback(top_three);
		})
	});
	request.on('error', function(e) {
		console.log('HTTP error --> ' + e.message);
	});
}