app.js

var express = require('express');

var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var partials = require('express-partials');
var methodOverride = require('method-override');
var session = require('express-session');
var routes = require('./routes/index');
var models = require('./models/models');
var visitas = 0;
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(partials());

// uncomment after placing your favicon in /public
app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser('DOE'));
app.use(session());
app.use(methodOverride('_method'));
app.use(express.static(path.join(__dirname, 'public')));

app.use(function(req,res,next){
    console.log('sesion:  ' +req.session);
     req.session.count = req.session.count || 0;
    var contadorController = require('./controllers/visitas_controller');
        if(visitas ===0) visitas = models.visitasprincipio;

        if(req.session.count=== 0) { visitas++;
     contadorController.nuevavisita(req,res,next,JSON.stringify(req.session));}
     req.session.count++;
     
     console.log("visitas: "+ visitas);


    
     req.session.visitas=visitas;

        

    next();
});


//Helpers dinámicos:
app.use(function(req,res,next){
    //si no existe lo inicializa
    if(!req.session.redir){
        req.session.redir = '/';
    }
    //guardar path en session.redir para despues de login

    req.session.redir = req.path;

    //hacer visible req.session en las vistas
    res.locals.session = req.session;

    if (!req.session.medios) { 
        req.session.medios = [{grosor:50, mur:1, er:1},{grosor:12.5, mur:1, er:4},{grosor:50, mur:1, er:1}];
        req.session.freq = 3;

    }

    next();

});

app.use('/', routes);


// 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 handlers

// development error handler
// will print stacktrace
//if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            visitas: visitas,
            message: err.message,
            error: err
        });
    });
//}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;