var gateway = require('gateway');
gateway.give(function(method, params, next){
	// Give the Id
	db.payment.find(params.id, function(err, doc){
		next(err, doc.uuid);
	});
});

gateway.request(function(method, payment, next){
	// The payment just made
	console.log(method, payment);
	db.payment.findAndUpdate(payment.id, payment, function(err){
		next(err);
	});
});

// OPTIONAL
gateway.serialize( function(req, methods, next){
	// What are the methods of payment for the user
	next(methods);
});

// Methods with use
gateway.use(PayPal({
	api : 'My API',
	secret : 'My secret',
	url : {
		success : 'http://mydomain.com/:method/:id',
		cancel : 'http://mydomain.com/pay',	
	},
	showMethod : true
}));

gateway.use(CoinBase({
	api : 'My API',
	secret : 'My secret',
	url : {
		success : 'http://mydomain.com/bitcoin/:id'	
	}
}));


app.use(gateway.methods());
app.post('/paypal', gateway.payment('paypal'), otherFunction );
app.get('/pay', function(req, res, next){
	gateway.create('paypal', {
		title : 'Give the donate',
		description : 'A donation',
		amount : 10,
		currency : 'USD',
		tax : 0.1,
		id : '--My Id --'
	}, function(err, obj){
		if(err) return next(err);
		res.redirect(obj.link);
	});
});