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 mongoose = require('mongoose');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;

var indexRouter = require('./app/routes/indexRouter');
var achievementsRouter = require('./app/routes/achievementsRouter');
var usersRouter = require('./app/routes/usersRouter');
var sessionsRouter = require('./app/routes/sessionsRouter');

var app = express();

app.set('views', path.join(__dirname, 'app/views'));
app.set('view engine', 'jade');

app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, '/public')));
app.use(require('express-session')({
   secret: 'keyboard cat',
   resave: false,
   saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());

// routing config
app.use('/', indexRouter);
app.use('/achievements', achievementsRouter);
app.use('/users', usersRouter);
app.use('/sessions', sessionsRouter);

// passport config
var User = require('./app/models/user');
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// 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', {
      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;