app.js

var express = require('express');
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var expressValidator = require('express-validator');
var db = require('./db/db');
var register = require('./routes/register');
var login = require('./routes/login');
var tweets = require('./routes/tweets');
var interaction = require('./routes/interaction');

var app = express();

app.use(expressValidator({
    errorFormatter: function(param, msg, value) {
        var namespace = param.split('.')
            , root    = namespace.shift()
            , formParam = root;

        while(namespace.length) {
            formParam += '[' + namespace.shift() + ']';
        }
        return {
            param : formParam,
            msg   : msg,
            value : value
        };
    }
}));

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

app.use('/api/register', register);
app.use('/api/login', login);
app.use('/api/tweets', tweets);
app.use('/api/interaction', interaction);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};
    console.log(req);
    // render the error page
  res.status(err.status || 500);
  res.json({status:'error'});
});

module.exports = app;