app.js

var express = require('express');
var path = require('path');
var passport = require('passport');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var MongoClient = require('mongodb').MongoClient;

var Strategy = require("./lib").Strategy;
var uploadReport = require('./routes/uploadReport');
var queryReports = require('./routes/queryReports');
var getTestName = require('./routes/getTestName');
var githubLogin = require('./routes/githubLogin');

var deployPath = process.env.deployPath || "";
passport.use(new Strategy({
        clientID: "4d3e985fc1a04fdf2674",
        clientSecret: "022ba1b17ff29735a2afe03e1f8530a50affbeb0",
        callbackURL: 'https://nodereport.herokuapp.com/login/github/return'
    },
    function(accessToken, refreshToken, profile, cb) {
        profile.accessToken = accessToken;
        return cb(null, profile);
    }));
passport.serializeUser(function(user, cb) {
    cb(null, user);
});
passport.deserializeUser(function(obj, cb) {
    cb(null, obj);
});

var app = express();

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

// uncomment after placing your favicon in /public
app.use(deployPath, favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json({
    limit: '50mb'
}));
app.use(bodyParser.urlencoded({
    limit: '50mb',
    extended: false
}));
app.use(cookieParser());
app.use(require('express-session')({ // manage github log in session
    secret: 'my precious',
    resave: true,
    saveUninitialized: true
}));

//initialize passport
app.use(passport.initialize());
app.use(passport.session());

//define static public path
app.use(deployPath, express.static(path.join(__dirname, 'public')));

//use middlewares
app.use(deployPath, uploadReport);
app.use(deployPath, queryReports);
app.use(deployPath, getTestName);
app.use(deployPath, githubLogin);

app.get(deployPath, function(req, res) {    
    res.sendFile(path.join(__dirname, 'public', 'home.html'));
});
app.get(deployPath + "/ReadReport", function(req, res) {
    res.sendFile(path.join(__dirname, 'public', 'ReadReport.html'));
});
app.get(deployPath + "/UploadReport", function(req, res) {
    res.sendFile(path.join(__dirname, 'public', 'UploadReport.html'));
});

// authenticate github
app.get(deployPath + '/login/github', passport.authenticate('github'));
app.get(deployPath + '/login/github/return', passport.authenticate('github', {
        failureRedirect: deployPath + '/'
    }),
    function(req, res) {
        res.redirect(deployPath + '/');
    });

// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Page 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 : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;