var express         = require("express"),
    app             = express(),
    bodyParser      = require("body-parser"),
    methodOverride  = require("method-override"),
    mongoose        = require('mongoose');


var morgan      = require('morgan');
var jwt    = require('jsonwebtoken'); // used to create, sign, and verify tokens
var config = require('./config'); // get our config file

mongoose.Promise = global.Promise;
// Connection to DB
mongoose.connect(config.database, function(err, res) {
  if(err) throw err;
  console.log('Connected to Database');
});
app.set('superSecret', config.secret); // secret variable

// Middlewares
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(methodOverride());

// use morgan to log requests to the console
app.use(morgan('dev'));

// Import Models and controllers
var userMdl     = require('./models/userModel')(app, mongoose);
var userCtrl = require('./controllers/userController');

var travelMdl     = require('./models/travelModel')(app, mongoose);
var joinMdl     = require('./models/joinModel')(app, mongoose);
var commentMdl     = require('./models/commentModel')(app, mongoose);
var travelCtrl = require('./controllers/travelController');

/*// Example Route
var router = express.Router();
router.get('/', function(req, res) {
  res.send("Hello world!");
});
app.use(router);*/
app.use(express.static(__dirname + '/www'));


//CORS
app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, X-Access-Token");
  next();
});

// API routes ------------------------------------------------------
var apiRoutes = express.Router();

apiRoutes.route('/users')
  .get(userCtrl.findAllUsers)
  .post(userCtrl.addUser);
apiRoutes.route('/users/:id')
    .get(userCtrl.findById);
apiRoutes.route('/users/byusername/:username')
    .get(userCtrl.findUserByUsername);
apiRoutes.route('/travels/user/:username')
    .get(travelCtrl.findAllTravelsFromUsername);

apiRoutes.route('/auth')
    .post(userCtrl.login);

apiRoutes.route('/travels')
  .get(travelCtrl.findAllTravels);

apiRoutes.route('/travels/:id')
    .get(travelCtrl.findById);
apiRoutes.route('/travels/join/:travelId')
    .get(travelCtrl.getJoinsByTravelId);
apiRoutes.route('/travels/comment/:travelId')
    .get(travelCtrl.getCommentsByTravelId);

// OJU AQUÏ TREC la verificació de token temporalment, per fer les proves des de l'app
// route middleware to verify a token
apiRoutes.use(function(req, res, next) {

  // check header or url parameters or post parameters for token
  var token = req.body.token || req.query.token || req.headers['x-access-token'];

  // decode token
  if (token) {
    // verifies secret and checks exp
    jwt.verify(token, app.get('superSecret'), function(err, decoded) {
      if (err) {
        return res.json({ success: false, message: 'Failed to authenticate token.' });
      } else {
        // if everything is good, save to request for use in other routes
        req.decoded = decoded;
        //console.log("decoded " + decoded);
        next();
      }
    });

  } else {

    // if there is no token
    // return an error
    return res.status(201).send({
        success: false,
        message: 'No token provided.'
    });

  }
}); //fi verificació de token


apiRoutes.route('/users/:id')
  .put(userCtrl.updateUser)
  .delete(userCtrl.deleteUser);

apiRoutes.route('/travels')
  .post(travelCtrl.addTravel);

apiRoutes.route('/travels/:id')
  .put(travelCtrl.updateTravel)
  .delete(travelCtrl.deleteTravel);

apiRoutes.route('/travels/join/:travelId')
    .post(travelCtrl.addJoin);
apiRoutes.route('/travels/unjoin/:travelId')
    .post(travelCtrl.doUnjoin);

apiRoutes.route('/travels/comment/:travelId')
    .post(travelCtrl.addComment);

app.use('/api', apiRoutes);
// end of API routes -------------------------------------

// Start server
app.listen(config.port, function() {
  console.log("Node server running on http://localhost:3000");
});