var UserSchema = new Schema({
    email: String,
    username: String,
    provider: String,
    hashed_password: String,
    salt: String,
});

function generateToken() {
    var buf = new Buffer(16);
    for (var i = 0; i < buf.length; i++) {
        buf[i] = Math.floor(Math.random() * 256);
    }
    var id = buf.toString('base64');
    return id;
}

var express = require('express');
var path = require('path');
var favicon = require('static-favicon');
var flash = require('connect-flash');
var morgan = require('morgan');
var cookieParser = require('cookie-parser');
var cookieSession = require('cookie-session');
var bodyParser = require('body-parser');
var http = require('http');
var https = require('https');
var fs = require('fs');
var path = require('path');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;

var app = express();
app.set('port', 3000);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

var cookies = cookieSession({
    name: 'abc123',
    secret: 'mysecret',
    maxage: 10 * 60 * 1000
});
app.use(cookies);
app.use(favicon());
app.use(flash());
app.use(morgan());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser());
app.use(passport.initialize());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public')));

module.exports = app;

passport.use(new LocalStrategy(function (username, password, done) {
    return users.validateUser(username, password, done);
}));

//KEEP ENTIRE USER OBJECT IN THE SESSION
passport.serializeUser(function (user, done) {
    done(null, user);
});
passport.deserializeUser(function (user, done) {
    done(null, user);
});

//Error handling after everything else
app.use(logErrors); //log all errors
app.use(clientErrorHandler); //special handler for xhr
app.use(errorHandler); //basic handler

http.createServer(app).listen(app.get('port'), function () {
    console.log('Express server listening on HTTP port ' + app.get('port'));
});

app.get('/forgot', function (req, res) {
    if (req.isAuthenticated()) {
        //user is alreay logged in
        return res.redirect('/');
    }

    //UI with one input for email
    res.render('forgot');
});

app.post('/forgot', function (req, res) {
    if (req.isAuthenticated()) {
        //user is alreay logged in
        return res.redirect('/');
    }
    users.forgot(req, res, function (err) {
        if (err) {
            req.flash('error', err);
        }
        else {
            req.flash('success', 'Please check your email for further instructions.');
        }
        res.redirect('/');
    });
});

app.get('/reset/:token', function (req, res) {
    if (req.isAuthenticated()) {
        //user is alreay logged in
        return res.redirect('/');
    }
    var token = req.params.token;
    users.checkReset(token, req, res, function (err, data) {
        if (err)
            req.flash('error', err);

        //show the UI with new password entry
        res.render('reset');
    });
});

app.post('/reset', function (req, res) {
    if (req.isAuthenticated()) {
        //user is alreay logged in
        return res.redirect('/');
    }
    users.reset(req, res, function (err) {
        if (err) {
            req.flash('error', err);
            return res.redirect('/reset');
        }
        else {
            req.flash('success', 'Password successfully reset.  Please login using new password.');
            return res.redirect('/login');
        }
    });
});