var express = require('express'),
	fortune = require('./lib/fortune.js'),
	formidable = require('formidable');

var app = express();

// set up handlebars view engine
var handlebars = require('express3-handlebars').create({
    defaultLayout:'main',
    helpers: {
        section: function(name, options){
            if(!this._sections) this._sections = {};
            this._sections[name] = options.fn(this);
            return null;
        }
    }
});
app.engine('handlebars', handlebars.engine);
app.set('view engine', 'handlebars');

app.set('port', process.env.PORT || 3000);

app.use(express.static(__dirname + '/public'));
app.use(require('body-parser')());

// set 'showTests' context property if the querystring contains test=1
app.use(function(req, res, next){
	res.locals.showTests = app.get('env') !== 'production' && 
		req.query.test === '1';
	next();
});

// mocked weather data
function getWeatherData(){
    return {
        locations: [
            {
                name: 'Portland',
                forecastUrl: 'http://www.wunderground.com/US/OR/Portland.html',
                iconUrl: 'http://icons-ak.wxug.com/i/c/k/cloudy.gif',
                weather: 'Overcast',
                temp: '54.1 F (12.3 C)',
            },
            {
                name: 'Bend',
                forecastUrl: 'http://www.wunderground.com/US/OR/Bend.html',
                iconUrl: 'http://icons-ak.wxug.com/i/c/k/partlycloudy.gif',
                weather: 'Partly Cloudy',
                temp: '55.0 F (12.8 C)',
            },
            {
                name: 'Manzanita',
                forecastUrl: 'http://www.wunderground.com/US/OR/Manzanita.html',
                iconUrl: 'http://icons-ak.wxug.com/i/c/k/rain.gif',
                weather: 'Light Rain',
                temp: '55.0 F (12.8 C)',
            },
        ],
    };
}

// middleware to add weather data to context
app.use(function(req, res, next){
	if(!res.locals.partials) res.locals.partials = {};
 	res.locals.partials.weatherContext = getWeatherData();
 	next();
});

app.get('/', function(req, res) {
	res.render('home');
});
app.get('/about', function(req,res){
	res.render('about', { 
		fortune: fortune.getFortune(),
		pageTestScript: '/qa/tests-about.js' 
	} );
});
app.get('/tours/hood-river', function(req, res){
	res.render('tours/hood-river');
});
app.get('/tours/oregon-coast', function(req, res){
	res.render('tours/oregon-coast');
});
app.get('/tours/request-group-rate', function(req, res){
	res.render('tours/request-group-rate');
});
app.get('/jquery-test', function(req, res){
	res.render('jquery-test');
});
app.get('/nursery-rhyme', function(req, res){
	res.render('nursery-rhyme');
});
app.get('/data/nursery-rhyme', function(req, res){
	res.json({
		animal: 'squirrel',
		bodyPart: 'tail',
		adjective: 'bushy',
		noun: 'heck',
	});
});
app.get('/thank-you', function(req, res){
	res.render('thank-you');
});
app.get('/newsletter', function(req, res){
    // we will learn about CSRF later...for now, we just
    // provide a dummy value
    res.render('newsletter', { csrf: 'CSRF token goes here' });
});
app.post('/process', function(req, res){
    if(req.xhr || req.accepts('json,html')==='json'){
        // if there were an error, we would send { error: 'error description' }
        res.send({ success: true });
    } else {
        // if there were an error, we would redirect to an error page
        res.redirect(303, '/thank-you');
    }
});
app.get('/contest/vacation-photo', function(req, res){
    var now = new Date();
    res.render('contest/vacation-photo', { year: now.getFullYear(), month: now.getMonth() });
});
app.post('/contest/vacation-photo/:year/:month', function(req, res){
    var form = new formidable.IncomingForm();
    form.parse(req, function(err, fields, files){
        if(err) return res.redirect(303, '/error');
        console.log('received fields:');
        console.log(fields);
        console.log('received files:');
        console.log(files);
        res.redirect(303, '/thank-you');
    });
});

// 404 catch-all handler (middleware)
app.use(function(req, res, next){
	res.status(404);
	res.render('404');
});

// 500 error handler (middleware)
app.use(function(err, req, res, next){
	console.error(err.stack);
	res.status(500);
	res.render('500');
});

app.listen(app.get('port'), function(){
  console.log( 'Express started on http://localhost:' + 
    app.get('port') + '; press Ctrl-C to terminate.' );
});