A slackbot which retrieves Star Wars articles given a search term.

bot.js

/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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          \ \_____\  \ \_____\    \ \_\  \ \_\ \_\  \ \_\    \ \_\
           \/_____/   \/_____/     \/_/   \/_/\/_/   \/_/     \/_/


This is a simple Slack bot built with Botkit. The bot is called 'holocron' and will go get a Star Wars article (from Wookiepedia) 
if you mention or direct mention the bot with a search term.

Read all about Botkit here:

    -> http://howdy.ai/botkit

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

var http = require('http')
var S = require('string');
var Botkit = require('./lib/Botkit.js')
var os = require('os');

var controller = Botkit.slackbot({
  debug: false,
});

var bot = controller.spawn(
  {
    token:<<Add your token here>>
  }
).startRTM();

controller.hears(['hello','hi'],'direct_message,direct_mention,mention',function(bot,message) {

  bot.api.reactions.add({
    timestamp: message.ts,
    channel: message.channel,
    name: 'robot_face',
  },function(err,res) {
    if (err) {
      bot.botkit.log("Failed to add emoji reaction :(",err);
    }
  });

  controller.storage.users.get(message.user,function(err,user) {
    if (user && user.name) {
      bot.reply(message,"Hello " + user.name+"!!");
    } else {
      bot.reply(message,"Hello.");
    }
  });
})

controller.hears(['shutdown'],'direct_message,direct_mention,mention',function(bot,message) {

  bot.startConversation(message,function(err,convo) {
    convo.ask("Are you sure you want me to shutdown?",[
      {
        pattern: bot.utterances.yes,
        callback: function(response,convo) {
          convo.say("Bye!");
          convo.next();
          setTimeout(function() {
            process.exit();
          },3000);
        }
      },
      {
        pattern: bot.utterances.no,
        default:true,
        callback: function(response,convo) {
          convo.say("*Phew!*");
          convo.next();
        }
      }
    ])
  })
})

controller.hears(['uptime','identify yourself','who are you','what is your name'],'direct_message,direct_mention,mention',function(bot,message) {

  var hostname = os.hostname();
  var uptime = formatUptime(process.uptime());

  bot.reply(message,':robot_face: I am a bot named <@' + bot.identity.name +'>. I have been running for ' + uptime + ' on ' + hostname + ".");
})

function formatUptime(uptime) {
  var unit = 'second';
  if (uptime > 60) {
    uptime = uptime / 60;
    unit = 'minute';
  }
  if (uptime > 60) {
    uptime = uptime / 60;
    unit = 'hour';
  }
  if (uptime != 1) {
    unit = unit +'s';
  }

  uptime = uptime + ' ' + unit;
  return uptime;
}

///////////////////////////////////////////////////

controller.hears([''],'direct_message,direct_mention',function(bot,message) {

    var searchTerm = message.text;
    http.get('http://starwars.wikia.com/api/v1/Search/List?query='+ searchTerm +'&limit=1&minArticleQuality=10&batch=1&namespaces=0%2C14', function(res) {
        if (res.statusCode !== 200) {
            bot.reply(message, "Sorry, couldn't find anything about that. :confused:");
        } else {
            var body = "";
            res.on('data', function(chunk) {
                body += chunk;
            });
            res.on('end',function() {
                var firstResult = JSON.parse(body).items[0];
                if (firstResult !== null) {
                    if (firstResult.quality > 75) {
                        bot.reply(message, "Got it! :grin:\r\n" + firstResult.url);
                    }
                    else {
                        bot.reply(message, "Is this what you're after? " + firstResult.url + ' :thinking_face:');
                    }
                }
                else {
                    bot.reply(message, "Sorry, couldn't find anything about " + searchTerm + ' :confused:');
                }
           });
       }
   }).on('error', function(e) {
       console.log("error: ", e);
   });
});