'use strict';

const mw = require('../middleware.js'),
	router = require('express').Router(),
	slug = require('slug'),
	xss = require('xss'),
  User = require('../models.js').user;

module.exports = router
	
	// Index
	.get('/', (req,res,next)=>{
		res.render('index');
	})

	// Help
	.get('/help', (req,res)=>{
		res.render('help');
	})
	
	// Terms of Service and Privacy Policy
	.get('/terms', (req,res)=>{
		res.render('terms');
	})
	.get('/privacy', (req,res)=>{
		res.render('privacy');
	})
	
	// robots.txt
	.get('/robots.txt', (req,res)=>{ 
		res.type('text/plain');
		res.send("User-agent: *\n"+
			"Disallow: /map/*\n"
		);
	})
	
	// favicon.ico
	.get('/favicon.ico', (req,res)=>{
		res.redirect('/static/img/icon/by/16-32-48.ico');
	})
	
	// Endpoint to validate forms
	.get('/validate', (req,res,next)=>{
		
		// Validate unique slug
		if (req.query.slug) {
			User.findOne({ slug: slug(req.query.slug) })
			.then( (existingUser)=>{
				if (existingUser && existingUser.id!==req.user.id) {
					res.sendStatus(400);
				}
				else { res.sendStatus(200); }
			})
			.catch( (err)=>{
				console.error(err);
				res.sendStatus(500);
			});
		}
		
		// Validate unique email
		else if (req.query.email) {
			User.findOne({ email: req.query.email })
			.then( (existingUser)=>{
				if (existingUser && existingUser.id!==req.user.id) {
					res.sendStatus(400);
				}
				else { res.sendStatus(200); }
			})
			.catch( (err)=>{
				console.error(err);
				res.sendStatus(500);
			});
		}
		
		// Create slug
		else if (req.query.slugify) {
			res.send(slug(xss(req.query.slugify)));
		}
		
		// Sanitize for XSS
		else if (req.query.xss) {
			res.send(xss(req.query.xss));
		}
		
		// 404
		else { next(); }
		
	})
	
	// Link to androidapp in play store
	.get('/android', (req,res)=>{
		res.redirect('https://play.google.com/store/apps/details?id=us.keithirwin.tracman');
	})
	
	// Link to iphone app in the apple store
	// ... maybe someday
	.get('/ios', (req,res)=>{
		res.redirect('/help#why-is-there-no-ios-app');
	})

;