Webtask

const express    = require('express');
const Webtask    = require('webtask-tools');
const bodyParser = require('body-parser');
const request = require('request');
const jwt = require('express-jwt');
const jwks = require('jwks-rsa');
const shuffle = require('lodash.shuffle');

const app = express();

const jwtCheck = jwt({
    secret: jwks.expressJwtSecret({
        cache: true,
        rateLimit: true,
        jwksRequestsPerMinute: 5,
        jwksUri: "https://adobot.auth0.com/.well-known/jwks.json"
    }),
    audience: 'gifbattle',
    issuer: "https://adobot.auth0.com/",
    algorithms: ['RS256']
});

app.use(bodyParser.json());

app.get('/random', (req, res) => {
  request('http://api.giphy.com/v1/gifs/random?api_key=uF5RTlWnH7glmKFQcG1EQpOKRAeZredD', (error, response, body) => {
    
    body = JSON.parse(body);
    
    const gif = {
      id: body.data.id,
      url: body.data.image_original_url
    };
    
    res.json(gif);
  });
});

app.post('/', (req, res) => {
  var gif = req.body;
  
  db(req, (data) => {
    
    data = data || [];
    
    data.push(gif);
    
    req.webtaskContext.storage.set(data, (err)=>{
      
      res.json({message:"Success!"})
      
    })
  })
});

app.post('/vote', (req, res)=>{
  let gif = req.body;
  
  db(req, (data) => {
    const index = data.findIndex(item => item.id === gif.id);
    data[index].votes += 1;
    
    req.webtaskContext.storage.set(data, (err) =>{
      res.json({message:"Success!"})
    })
  })
})

app.get('/versus', (req, res)=>{
  let response = {};
  db(req, (data) => {
    data = shuffle(data);
    response = {
      gif_one: data[0],
      gif_two: data[1]
    }
    res.json(response);
  })
})

app.get('/leaderboard', (req, res)=>{
  db(req, (data) => {
    data.sort((a,b)=>{return b.votes - a.votes});
    res.json(data);
  });
})

function db(req, cb){ 
  req.webtaskContext.storage.get((err, data)=>{
    cb(data);
  });
}

module.exports = Webtask.fromExpress(app);